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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-25 15:35:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-25 15:35:03 -0700
commitad363e0916423b2e6cdfcdc30ae707ec709f0a65 (patch)
treec47cc9062f7adc0ceb27f634b63b8548b733f01c /drivers
parented0795aa12129df9f3d2cc81ee579a9e54e12885 (diff)
parent1032fbfd792f2b384ac16a63993b8fae5eea9083 (diff)
Merge branch 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson
* 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson: mach-ux500: voltage domain regulators for DB8500 cpufreq: make DB8500 cpufreq driver compile cpufreq: update DB8500 cpufreq driver mach-ux500: move CPUfreq driver to cpufreq subsystem mfd: add DB5500 PRCMU driver mfd: update DB8500 PRCMU driver mach-ux500: move the DB8500 PRCMU driver to MFD mach-ux500: make PRCMU base address dynamic mach-ux500: rename PRCMU driver per SoC mach-ux500: update ASIC version detection mach-ux500: update SoC and board IRQ handling mach-ux500: update the DB5500 register file mach-ux500: update the DB8500 register file
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cpufreq/Makefile2
-rw-r--r--drivers/cpufreq/db8500-cpufreq.c169
-rw-r--r--drivers/mfd/Kconfig22
-rw-r--r--drivers/mfd/Makefile5
-rw-r--r--drivers/mfd/ab8500-i2c.c3
-rw-r--r--drivers/mfd/db5500-prcmu-regs.h115
-rw-r--r--drivers/mfd/db5500-prcmu.c448
-rw-r--r--drivers/mfd/db8500-prcmu-regs.h166
-rw-r--r--drivers/mfd/db8500-prcmu.c2069
-rw-r--r--drivers/regulator/Kconfig7
-rw-r--r--drivers/regulator/Makefile1
-rw-r--r--drivers/regulator/db8500-prcmu.c558
12 files changed, 3561 insertions, 4 deletions
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index c7f1a6f16b6e..e2fc2d21fa61 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -39,3 +39,5 @@ obj-$(CONFIG_X86_CPUFREQ_NFORCE2) += cpufreq-nforce2.o
##################################################################################d
+# ARM SoC drivers
+obj-$(CONFIG_UX500_SOC_DB8500) += db8500-cpufreq.o
diff --git a/drivers/cpufreq/db8500-cpufreq.c b/drivers/cpufreq/db8500-cpufreq.c
new file mode 100644
index 000000000000..d90456a809f9
--- /dev/null
+++ b/drivers/cpufreq/db8500-cpufreq.c
@@ -0,0 +1,169 @@
+/*
+ * Copyright (C) STMicroelectronics 2009
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Sundar Iyer <sundar.iyer@stericsson.com>
+ * Author: Martin Persson <martin.persson@stericsson.com>
+ * Author: Jonas Aaberg <jonas.aberg@stericsson.com>
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/cpufreq.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/mfd/db8500-prcmu.h>
+#include <mach/id.h>
+
+static struct cpufreq_frequency_table freq_table[] = {
+ [0] = {
+ .index = 0,
+ .frequency = 300000,
+ },
+ [1] = {
+ .index = 1,
+ .frequency = 600000,
+ },
+ [2] = {
+ /* Used for MAX_OPP, if available */
+ .index = 2,
+ .frequency = CPUFREQ_TABLE_END,
+ },
+ [3] = {
+ .index = 3,
+ .frequency = CPUFREQ_TABLE_END,
+ },
+};
+
+static enum arm_opp idx2opp[] = {
+ ARM_50_OPP,
+ ARM_100_OPP,
+ ARM_MAX_OPP
+};
+
+static struct freq_attr *db8500_cpufreq_attr[] = {
+ &cpufreq_freq_attr_scaling_available_freqs,
+ NULL,
+};
+
+static int db8500_cpufreq_verify_speed(struct cpufreq_policy *policy)
+{
+ return cpufreq_frequency_table_verify(policy, freq_table);
+}
+
+static int db8500_cpufreq_target(struct cpufreq_policy *policy,
+ unsigned int target_freq,
+ unsigned int relation)
+{
+ struct cpufreq_freqs freqs;
+ unsigned int idx;
+
+ /* scale the target frequency to one of the extremes supported */
+ if (target_freq < policy->cpuinfo.min_freq)
+ target_freq = policy->cpuinfo.min_freq;
+ if (target_freq > policy->cpuinfo.max_freq)
+ target_freq = policy->cpuinfo.max_freq;
+
+ /* Lookup the next frequency */
+ if (cpufreq_frequency_table_target
+ (policy, freq_table, target_freq, relation, &idx)) {
+ return -EINVAL;
+ }
+
+ freqs.old = policy->cur;
+ freqs.new = freq_table[idx].frequency;
+ freqs.cpu = policy->cpu;
+
+ if (freqs.old == freqs.new)
+ return 0;
+
+ /* pre-change notification */
+ cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+
+ /* request the PRCM unit for opp change */
+ if (prcmu_set_arm_opp(idx2opp[idx])) {
+ pr_err("db8500-cpufreq: Failed to set OPP level\n");
+ return -EINVAL;
+ }
+
+ /* post change notification */
+ cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+
+ return 0;
+}
+
+static unsigned int db8500_cpufreq_getspeed(unsigned int cpu)
+{
+ int i;
+ /* request the prcm to get the current ARM opp */
+ for (i = 0; prcmu_get_arm_opp() != idx2opp[i]; i++)
+ ;
+ return freq_table[i].frequency;
+}
+
+static int __cpuinit db8500_cpufreq_init(struct cpufreq_policy *policy)
+{
+ int res;
+ int i;
+
+ BUILD_BUG_ON(ARRAY_SIZE(idx2opp) + 1 != ARRAY_SIZE(freq_table));
+
+ if (cpu_is_u8500v2() && !prcmu_is_u8400()) {
+ freq_table[0].frequency = 400000;
+ freq_table[1].frequency = 800000;
+ if (prcmu_has_arm_maxopp())
+ freq_table[2].frequency = 1000000;
+ }
+
+ /* get policy fields based on the table */
+ res = cpufreq_frequency_table_cpuinfo(policy, freq_table);
+ if (!res)
+ cpufreq_frequency_table_get_attr(freq_table, policy->cpu);
+ else {
+ pr_err("db8500-cpufreq : Failed to read policy table\n");
+ return res;
+ }
+
+ policy->min = policy->cpuinfo.min_freq;
+ policy->max = policy->cpuinfo.max_freq;
+ policy->cur = db8500_cpufreq_getspeed(policy->cpu);
+
+ for (i = 0; freq_table[i].frequency != policy->cur; i++)
+ ;
+
+ policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
+
+ /*
+ * FIXME : Need to take time measurement across the target()
+ * function with no/some/all drivers in the notification
+ * list.
+ */
+ policy->cpuinfo.transition_latency = 20 * 1000; /* in ns */
+
+ /* policy sharing between dual CPUs */
+ cpumask_copy(policy->cpus, &cpu_present_map);
+
+ policy->shared_type = CPUFREQ_SHARED_TYPE_ALL;
+
+ return 0;
+}
+
+static struct cpufreq_driver db8500_cpufreq_driver = {
+ .flags = CPUFREQ_STICKY,
+ .verify = db8500_cpufreq_verify_speed,
+ .target = db8500_cpufreq_target,
+ .get = db8500_cpufreq_getspeed,
+ .init = db8500_cpufreq_init,
+ .name = "DB8500",
+ .attr = db8500_cpufreq_attr,
+};
+
+static int __init db8500_cpufreq_register(void)
+{
+ if (!cpu_is_u8500v20_or_later())
+ return -ENODEV;
+
+ pr_info("cpufreq for DB8500 started\n");
+ return cpufreq_register_driver(&db8500_cpufreq_driver);
+}
+device_initcall(db8500_cpufreq_register);
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 3ed3ff06be5d..481770ab2716 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -538,7 +538,7 @@ config AB8500_CORE
config AB8500_I2C_CORE
bool "AB8500 register access via PRCMU I2C"
- depends on AB8500_CORE && UX500_SOC_DB8500
+ depends on AB8500_CORE && MFD_DB8500_PRCMU
default y
help
This enables register access to the AB8500 chip via PRCMU I2C.
@@ -575,6 +575,26 @@ config AB3550_CORE
LEDs, vibrator, system power and temperature, power management
and ALSA sound.
+config MFD_DB8500_PRCMU
+ bool "ST-Ericsson DB8500 Power Reset Control Management Unit"
+ depends on UX500_SOC_DB8500
+ select MFD_CORE
+ help
+ Select this option to enable support for the DB8500 Power Reset
+ and Control Management Unit. This is basically an autonomous
+ system controller running an XP70 microprocessor, which is accessed
+ through a register map.
+
+config MFD_DB5500_PRCMU
+ bool "ST-Ericsson DB5500 Power Reset Control Management Unit"
+ depends on UX500_SOC_DB5500
+ select MFD_CORE
+ help
+ Select this option to enable support for the DB5500 Power Reset
+ and Control Management Unit. This is basically an autonomous
+ system controller running an XP70 microprocessor, which is accessed
+ through a register map.
+
config MFD_CS5535
tristate "Support for CS5535 and CS5536 southbridge core functions"
select MFD_CORE
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 419caa9d7dcf..24aa44448daf 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -74,9 +74,12 @@ obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
obj-$(CONFIG_AB3550_CORE) += ab3550-core.o
obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
-obj-$(CONFIG_AB8500_I2C_CORE) += ab8500-i2c.o
obj-$(CONFIG_AB8500_DEBUG) += ab8500-debugfs.o
obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
+obj-$(CONFIG_MFD_DB8500_PRCMU) += db8500-prcmu.o
+# ab8500-i2c need to come after db8500-prcmu (which provides the channel)
+obj-$(CONFIG_AB8500_I2C_CORE) += ab8500-i2c.o
+obj-$(CONFIG_MFD_DB5500_PRCMU) += db5500-prcmu.o
obj-$(CONFIG_MFD_TIMBERDALE) += timberdale.o
obj-$(CONFIG_PMIC_ADP5520) += adp5520.o
obj-$(CONFIG_LPC_SCH) += lpc_sch.o
diff --git a/drivers/mfd/ab8500-i2c.c b/drivers/mfd/ab8500-i2c.c
index 821e6b86afd2..9be541c6b004 100644
--- a/drivers/mfd/ab8500-i2c.c
+++ b/drivers/mfd/ab8500-i2c.c
@@ -11,8 +11,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mfd/ab8500.h>
-
-#include <mach/prcmu.h>
+#include <linux/mfd/db8500-prcmu.h>
static int ab8500_i2c_write(struct ab8500 *ab8500, u16 addr, u8 data)
{
diff --git a/drivers/mfd/db5500-prcmu-regs.h b/drivers/mfd/db5500-prcmu-regs.h
new file mode 100644
index 000000000000..9a8e9e4ddd33
--- /dev/null
+++ b/drivers/mfd/db5500-prcmu-regs.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) STMicroelectronics 2009
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ * Author: Sundar Iyer <sundar.iyer@stericsson.com>
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * PRCM Unit registers
+ */
+
+#ifndef __MACH_PRCMU_REGS_H
+#define __MACH_PRCMU_REGS_H
+
+#include <mach/hardware.h>
+
+#define PRCM_ARM_PLLDIVPS (_PRCMU_BASE + 0x118)
+#define PRCM_ARM_PLLDIVPS_ARM_BRM_RATE 0x3f
+#define PRCM_ARM_PLLDIVPS_MAX_MASK 0xf
+
+#define PRCM_PLLARM_LOCKP (_PRCMU_BASE + 0x0a8)
+#define PRCM_PLLARM_LOCKP_PRCM_PLLARM_LOCKP3 0x2
+
+#define PRCM_ARM_CHGCLKREQ (_PRCMU_BASE + 0x114)
+#define PRCM_ARM_CHGCLKREQ_PRCM_ARM_CHGCLKREQ 0x1
+
+#define PRCM_PLLARM_ENABLE (_PRCMU_BASE + 0x98)
+#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_ENABLE 0x1
+#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_COUNTON 0x100
+
+#define PRCM_ARMCLKFIX_MGT (_PRCMU_BASE + 0x0)
+#define PRCM_A9_RESETN_CLR (_PRCMU_BASE + 0x1f4)
+#define PRCM_A9_RESETN_SET (_PRCMU_BASE + 0x1f0)
+#define PRCM_ARM_LS_CLAMP (_PRCMU_BASE + 0x30c)
+#define PRCM_SRAM_A9 (_PRCMU_BASE + 0x308)
+
+/* ARM WFI Standby signal register */
+#define PRCM_ARM_WFI_STANDBY (_PRCMU_BASE + 0x130)
+#define PRCM_IOCR (_PRCMU_BASE + 0x310)
+#define PRCM_IOCR_IOFORCE 0x1
+
+/* CPU mailbox registers */
+#define PRCM_MBOX_CPU_VAL (_PRCMU_BASE + 0x0fc)
+#define PRCM_MBOX_CPU_SET (_PRCMU_BASE + 0x100)
+#define PRCM_MBOX_CPU_CLR (_PRCMU_BASE + 0x104)
+
+/* Dual A9 core interrupt management unit registers */
+#define PRCM_A9_MASK_REQ (_PRCMU_BASE + 0x328)
+#define PRCM_A9_MASK_REQ_PRCM_A9_MASK_REQ 0x1
+
+#define PRCM_A9_MASK_ACK (_PRCMU_BASE + 0x32c)
+#define PRCM_ARMITMSK31TO0 (_PRCMU_BASE + 0x11c)
+#define PRCM_ARMITMSK63TO32 (_PRCMU_BASE + 0x120)
+#define PRCM_ARMITMSK95TO64 (_PRCMU_BASE + 0x124)
+#define PRCM_ARMITMSK127TO96 (_PRCMU_BASE + 0x128)
+#define PRCM_POWER_STATE_VAL (_PRCMU_BASE + 0x25C)
+#define PRCM_ARMITVAL31TO0 (_PRCMU_BASE + 0x260)
+#define PRCM_ARMITVAL63TO32 (_PRCMU_BASE + 0x264)
+#define PRCM_ARMITVAL95TO64 (_PRCMU_BASE + 0x268)
+#define PRCM_ARMITVAL127TO96 (_PRCMU_BASE + 0x26C)
+
+#define PRCM_HOSTACCESS_REQ (_PRCMU_BASE + 0x334)
+#define ARM_WAKEUP_MODEM 0x1
+
+#define PRCM_ARM_IT1_CLEAR (_PRCMU_BASE + 0x48C)
+#define PRCM_ARM_IT1_VAL (_PRCMU_BASE + 0x494)
+#define PRCM_HOLD_EVT (_PRCMU_BASE + 0x174)
+
+#define PRCM_ITSTATUS0 (_PRCMU_BASE + 0x148)
+#define PRCM_ITSTATUS1 (_PRCMU_BASE + 0x150)
+#define PRCM_ITSTATUS2 (_PRCMU_BASE + 0x158)
+#define PRCM_ITSTATUS3 (_PRCMU_BASE + 0x160)
+#define PRCM_ITSTATUS4 (_PRCMU_BASE + 0x168)
+#define PRCM_ITSTATUS5 (_PRCMU_BASE + 0x484)
+#define PRCM_ITCLEAR5 (_PRCMU_BASE + 0x488)
+#define PRCM_ARMIT_MASKXP70_IT (_PRCMU_BASE + 0x1018)
+
+/* System reset register */
+#define PRCM_APE_SOFTRST (_PRCMU_BASE + 0x228)
+
+/* Level shifter and clamp control registers */
+#define PRCM_MMIP_LS_CLAMP_SET (_PRCMU_BASE + 0x420)
+#define PRCM_MMIP_LS_CLAMP_CLR (_PRCMU_BASE + 0x424)
+
+/* PRCMU clock/PLL/reset registers */
+#define PRCM_PLLDSI_FREQ (_PRCMU_BASE + 0x500)
+#define PRCM_PLLDSI_ENABLE (_PRCMU_BASE + 0x504)
+#define PRCM_PLLDSI_LOCKP (_PRCMU_BASE + 0x508)
+#define PRCM_LCDCLK_MGT (_PRCMU_BASE + 0x044)
+#define PRCM_MCDECLK_MGT (_PRCMU_BASE + 0x064)
+#define PRCM_HDMICLK_MGT (_PRCMU_BASE + 0x058)
+#define PRCM_TVCLK_MGT (_PRCMU_BASE + 0x07c)
+#define PRCM_DSI_PLLOUT_SEL (_PRCMU_BASE + 0x530)
+#define PRCM_DSITVCLK_DIV (_PRCMU_BASE + 0x52C)
+#define PRCM_PLLDSI_LOCKP (_PRCMU_BASE + 0x508)
+#define PRCM_APE_RESETN_SET (_PRCMU_BASE + 0x1E4)
+#define PRCM_APE_RESETN_CLR (_PRCMU_BASE + 0x1E8)
+#define PRCM_CLKOCR (_PRCMU_BASE + 0x1CC)
+
+/* ePOD and memory power signal control registers */
+#define PRCM_EPOD_C_SET (_PRCMU_BASE + 0x410)
+#define PRCM_SRAM_LS_SLEEP (_PRCMU_BASE + 0x304)
+
+/* Debug power control unit registers */
+#define PRCM_POWER_STATE_SET (_PRCMU_BASE + 0x254)
+
+/* Miscellaneous unit registers */
+#define PRCM_DSI_SW_RESET (_PRCMU_BASE + 0x324)
+#define PRCM_GPIOCR (_PRCMU_BASE + 0x138)
+#define PRCM_GPIOCR_DBG_STM_MOD_CMD1 0x800
+#define PRCM_GPIOCR_DBG_UARTMOD_CMD0 0x1
+
+
+#endif /* __MACH_PRCMU__REGS_H */
diff --git a/drivers/mfd/db5500-prcmu.c b/drivers/mfd/db5500-prcmu.c
new file mode 100644
index 000000000000..9dbb3cab4a6f
--- /dev/null
+++ b/drivers/mfd/db5500-prcmu.c
@@ -0,0 +1,448 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
+ *
+ * U5500 PRCM Unit interface driver
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/completion.h>
+#include <linux/irq.h>
+#include <linux/jiffies.h>
+#include <linux/bitops.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/db5500-prcmu.h>
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <mach/db5500-regs.h>
+#include "db5500-prcmu-regs.h"
+
+#define _PRCM_MB_HEADER (tcdm_base + 0xFE8)
+#define PRCM_REQ_MB0_HEADER (_PRCM_MB_HEADER + 0x0)
+#define PRCM_REQ_MB1_HEADER (_PRCM_MB_HEADER + 0x1)
+#define PRCM_REQ_MB2_HEADER (_PRCM_MB_HEADER + 0x2)
+#define PRCM_REQ_MB3_HEADER (_PRCM_MB_HEADER + 0x3)
+#define PRCM_REQ_MB4_HEADER (_PRCM_MB_HEADER + 0x4)
+#define PRCM_REQ_MB5_HEADER (_PRCM_MB_HEADER + 0x5)
+#define PRCM_REQ_MB6_HEADER (_PRCM_MB_HEADER + 0x6)
+#define PRCM_REQ_MB7_HEADER (_PRCM_MB_HEADER + 0x7)
+#define PRCM_ACK_MB0_HEADER (_PRCM_MB_HEADER + 0x8)
+#define PRCM_ACK_MB1_HEADER (_PRCM_MB_HEADER + 0x9)
+#define PRCM_ACK_MB2_HEADER (_PRCM_MB_HEADER + 0xa)
+#define PRCM_ACK_MB3_HEADER (_PRCM_MB_HEADER + 0xb)
+#define PRCM_ACK_MB4_HEADER (_PRCM_MB_HEADER + 0xc)
+#define PRCM_ACK_MB5_HEADER (_PRCM_MB_HEADER + 0xd)
+#define PRCM_ACK_MB6_HEADER (_PRCM_MB_HEADER + 0xe)
+#define PRCM_ACK_MB7_HEADER (_PRCM_MB_HEADER + 0xf)
+
+/* Req Mailboxes */
+#define PRCM_REQ_MB0 (tcdm_base + 0xFD8)
+#define PRCM_REQ_MB1 (tcdm_base + 0xFCC)
+#define PRCM_REQ_MB2 (tcdm_base + 0xFC4)
+#define PRCM_REQ_MB3 (tcdm_base + 0xFC0)
+#define PRCM_REQ_MB4 (tcdm_base + 0xF98)
+#define PRCM_REQ_MB5 (tcdm_base + 0xF90)
+#define PRCM_REQ_MB6 (tcdm_base + 0xF8C)
+#define PRCM_REQ_MB7 (tcdm_base + 0xF84)
+
+/* Ack Mailboxes */
+#define PRCM_ACK_MB0 (tcdm_base + 0xF38)
+#define PRCM_ACK_MB1 (tcdm_base + 0xF30)
+#define PRCM_ACK_MB2 (tcdm_base + 0xF24)
+#define PRCM_ACK_MB3 (tcdm_base + 0xF20)
+#define PRCM_ACK_MB4 (tcdm_base + 0xF1C)
+#define PRCM_ACK_MB5 (tcdm_base + 0xF14)
+#define PRCM_ACK_MB6 (tcdm_base + 0xF0C)
+#define PRCM_ACK_MB7 (tcdm_base + 0xF08)
+
+enum mb_return_code {
+ RC_SUCCESS,
+ RC_FAIL,
+};
+
+/* Mailbox 0 headers. */
+enum mb0_header {
+ /* request */
+ RMB0H_PWR_STATE_TRANS = 1,
+ RMB0H_WAKE_UP_CFG,
+ RMB0H_RD_WAKE_UP_ACK,
+ /* acknowledge */
+ AMB0H_WAKE_UP = 1,
+};
+
+/* Mailbox 5 headers. */
+enum mb5_header {
+ MB5H_I2C_WRITE = 1,
+ MB5H_I2C_READ,
+};
+
+/* Request mailbox 5 fields. */
+#define PRCM_REQ_MB5_I2C_SLAVE (PRCM_REQ_MB5 + 0)
+#define PRCM_REQ_MB5_I2C_REG (PRCM_REQ_MB5 + 1)
+#define PRCM_REQ_MB5_I2C_SIZE (PRCM_REQ_MB5 + 2)
+#define PRCM_REQ_MB5_I2C_DATA (PRCM_REQ_MB5 + 4)
+
+/* Acknowledge mailbox 5 fields. */
+#define PRCM_ACK_MB5_RETURN_CODE (PRCM_ACK_MB5 + 0)
+#define PRCM_ACK_MB5_I2C_DATA (PRCM_ACK_MB5 + 4)
+
+#define NUM_MB 8
+#define MBOX_BIT BIT
+#define ALL_MBOX_BITS (MBOX_BIT(NUM_MB) - 1)
+
+/*
+* Used by MCDE to setup all necessary PRCMU registers
+*/
+#define PRCMU_RESET_DSIPLL 0x00004000
+#define PRCMU_UNCLAMP_DSIPLL 0x00400800
+
+/* HDMI CLK MGT PLLSW=001 (PLLSOC0), PLLDIV=0x8, = 50 Mhz*/
+#define PRCMU_DSI_CLOCK_SETTING 0x00000128
+/* TVCLK_MGT PLLSW=001 (PLLSOC0) PLLDIV=0x13, = 19.05 MHZ */
+#define PRCMU_DSI_LP_CLOCK_SETTING 0x00000135
+#define PRCMU_PLLDSI_FREQ_SETTING 0x0004013C
+#define PRCMU_DSI_PLLOUT_SEL_SETTING 0x00000002
+#define PRCMU_ENABLE_ESCAPE_CLOCK_DIV 0x03000101
+#define PRCMU_DISABLE_ESCAPE_CLOCK_DIV 0x00000101
+
+#define PRCMU_ENABLE_PLLDSI 0x00000001
+#define PRCMU_DISABLE_PLLDSI 0x00000000
+
+#define PRCMU_DSI_RESET_SW 0x00000003
+
+#define PRCMU_PLLDSI_LOCKP_LOCKED 0x3
+
+/*
+ * mb0_transfer - state needed for mailbox 0 communication.
+ * @lock: The transaction lock.
+ */
+static struct {
+ spinlock_t lock;
+} mb0_transfer;
+
+/*
+ * mb5_transfer - state needed for mailbox 5 communication.
+ * @lock: The transaction lock.
+ * @work: The transaction completion structure.
+ * @ack: Reply ("acknowledge") data.
+ */
+static struct {
+ struct mutex lock;
+ struct completion work;
+ struct {
+ u8 header;
+ u8 status;
+ u8 value[4];
+ } ack;
+} mb5_transfer;
+
+/* PRCMU TCDM base IO address. */
+static __iomem void *tcdm_base;
+
+/**
+ * db5500_prcmu_abb_read() - Read register value(s) from the ABB.
+ * @slave: The I2C slave address.
+ * @reg: The (start) register address.
+ * @value: The read out value(s).
+ * @size: The number of registers to read.
+ *
+ * Reads register value(s) from the ABB.
+ * @size has to be <= 4.
+ */
+int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size)
+{
+ int r;
+
+ if ((size < 1) || (4 < size))
+ return -EINVAL;
+
+ mutex_lock(&mb5_transfer.lock);
+
+ while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(5))
+ cpu_relax();
+ writeb(slave, PRCM_REQ_MB5_I2C_SLAVE);
+ writeb(reg, PRCM_REQ_MB5_I2C_REG);
+ writeb(size, PRCM_REQ_MB5_I2C_SIZE);
+ writeb(MB5H_I2C_READ, PRCM_REQ_MB5_HEADER);
+
+ writel(MBOX_BIT(5), PRCM_MBOX_CPU_SET);
+ wait_for_completion(&mb5_transfer.work);
+
+ r = 0;
+ if ((mb5_transfer.ack.header == MB5H_I2C_READ) &&
+ (mb5_transfer.ack.status == RC_SUCCESS))
+ memcpy(value, mb5_transfer.ack.value, (size_t)size);
+ else
+ r = -EIO;
+
+ mutex_unlock(&mb5_transfer.lock);
+
+ return r;
+}
+
+/**
+ * db5500_prcmu_abb_write() - Write register value(s) to the ABB.
+ * @slave: The I2C slave address.
+ * @reg: The (start) register address.
+ * @value: The value(s) to write.
+ * @size: The number of registers to write.
+ *
+ * Writes register value(s) to the ABB.
+ * @size has to be <= 4.
+ */
+int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size)
+{
+ int r;
+
+ if ((size < 1) || (4 < size))
+ return -EINVAL;
+
+ mutex_lock(&mb5_transfer.lock);
+
+ while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(5))
+ cpu_relax();
+ writeb(slave, PRCM_REQ_MB5_I2C_SLAVE);
+ writeb(reg, PRCM_REQ_MB5_I2C_REG);
+ writeb(size, PRCM_REQ_MB5_I2C_SIZE);
+ memcpy_toio(PRCM_REQ_MB5_I2C_DATA, value, size);
+ writeb(MB5H_I2C_WRITE, PRCM_REQ_MB5_HEADER);
+
+ writel(MBOX_BIT(5), PRCM_MBOX_CPU_SET);
+ wait_for_completion(&mb5_transfer.work);
+
+ if ((mb5_transfer.ack.header == MB5H_I2C_WRITE) &&
+ (mb5_transfer.ack.status == RC_SUCCESS))
+ r = 0;
+ else
+ r = -EIO;
+
+ mutex_unlock(&mb5_transfer.lock);
+
+ return r;
+}
+
+int db5500_prcmu_enable_dsipll(void)
+{
+ int i;
+
+ /* Enable DSIPLL_RESETN resets */
+ writel(PRCMU_RESET_DSIPLL, PRCM_APE_RESETN_CLR);
+ /* Unclamp DSIPLL in/out */
+ writel(PRCMU_UNCLAMP_DSIPLL, PRCM_MMIP_LS_CLAMP_CLR);
+ /* Set DSI PLL FREQ */
+ writel(PRCMU_PLLDSI_FREQ_SETTING, PRCM_PLLDSI_FREQ);
+ writel(PRCMU_DSI_PLLOUT_SEL_SETTING,
+ PRCM_DSI_PLLOUT_SEL);
+ /* Enable Escape clocks */
+ writel(PRCMU_ENABLE_ESCAPE_CLOCK_DIV, PRCM_DSITVCLK_DIV);
+
+ /* Start DSI PLL */
+ writel(PRCMU_ENABLE_PLLDSI, PRCM_PLLDSI_ENABLE);
+ /* Reset DSI PLL */
+ writel(PRCMU_DSI_RESET_SW, PRCM_DSI_SW_RESET);
+ for (i = 0; i < 10; i++) {
+ if ((readl(PRCM_PLLDSI_LOCKP) &
+ PRCMU_PLLDSI_LOCKP_LOCKED) == PRCMU_PLLDSI_LOCKP_LOCKED)
+ break;
+ udelay(100);
+ }
+ /* Release DSIPLL_RESETN */
+ writel(PRCMU_RESET_DSIPLL, PRCM_APE_RESETN_SET);
+ return 0;
+}
+
+int db5500_prcmu_disable_dsipll(void)
+{
+ /* Disable dsi pll */
+ writel(PRCMU_DISABLE_PLLDSI, PRCM_PLLDSI_ENABLE);
+ /* Disable escapeclock */
+ writel(PRCMU_DISABLE_ESCAPE_CLOCK_DIV, PRCM_DSITVCLK_DIV);
+ return 0;
+}
+
+int db5500_prcmu_set_display_clocks(void)
+{
+ /* HDMI and TVCLK Should be handled somewhere else */
+ /* PLLDIV=8, PLLSW=2, CLKEN=1 */
+ writel(PRCMU_DSI_CLOCK_SETTING, PRCM_HDMICLK_MGT);
+ /* PLLDIV=14, PLLSW=2, CLKEN=1 */
+ writel(PRCMU_DSI_LP_CLOCK_SETTING, PRCM_TVCLK_MGT);
+ return 0;
+}
+
+static void ack_dbb_wakeup(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mb0_transfer.lock, flags);
+
+ while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(0))
+ cpu_relax();
+
+ writeb(RMB0H_RD_WAKE_UP_ACK, PRCM_REQ_MB0_HEADER);
+ writel(MBOX_BIT(0), PRCM_MBOX_CPU_SET);
+
+ spin_unlock_irqrestore(&mb0_transfer.lock, flags);
+}
+
+static inline void print_unknown_header_warning(u8 n, u8 header)
+{
+ pr_warning("prcmu: Unknown message header (%d) in mailbox %d.\n",
+ header, n);
+}
+
+static bool read_mailbox_0(void)
+{
+ bool r;
+ u8 header;
+
+ header = readb(PRCM_ACK_MB0_HEADER);
+ switch (header) {
+ case AMB0H_WAKE_UP:
+ r = true;
+ break;
+ default:
+ print_unknown_header_warning(0, header);
+ r = false;
+ break;
+ }
+ writel(MBOX_BIT(0), PRCM_ARM_IT1_CLEAR);
+ return r;
+}
+
+static bool read_mailbox_1(void)
+{
+ writel(MBOX_BIT(1), PRCM_ARM_IT1_CLEAR);
+ return false;
+}
+
+static bool read_mailbox_2(void)
+{
+ writel(MBOX_BIT(2), PRCM_ARM_IT1_CLEAR);
+ return false;
+}
+
+static bool read_mailbox_3(void)
+{
+ writel(MBOX_BIT(3), PRCM_ARM_IT1_CLEAR);
+ return false;
+}
+
+static bool read_mailbox_4(void)
+{
+ writel(MBOX_BIT(4), PRCM_ARM_IT1_CLEAR);
+ return false;
+}
+
+static bool read_mailbox_5(void)
+{
+ u8 header;
+
+ header = readb(PRCM_ACK_MB5_HEADER);
+ switch (header) {
+ case MB5H_I2C_READ:
+ memcpy_fromio(mb5_transfer.ack.value, PRCM_ACK_MB5_I2C_DATA, 4);
+ case MB5H_I2C_WRITE:
+ mb5_transfer.ack.header = header;
+ mb5_transfer.ack.status = readb(PRCM_ACK_MB5_RETURN_CODE);
+ complete(&mb5_transfer.work);
+ break;
+ default:
+ print_unknown_header_warning(5, header);
+ break;
+ }
+ writel(MBOX_BIT(5), PRCM_ARM_IT1_CLEAR);
+ return false;
+}
+
+static bool read_mailbox_6(void)
+{
+ writel(MBOX_BIT(6), PRCM_ARM_IT1_CLEAR);
+ return false;
+}
+
+static bool read_mailbox_7(void)
+{
+ writel(MBOX_BIT(7), PRCM_ARM_IT1_CLEAR);
+ return false;
+}
+
+static bool (* const read_mailbox[NUM_MB])(void) = {
+ read_mailbox_0,
+ read_mailbox_1,
+ read_mailbox_2,
+ read_mailbox_3,
+ read_mailbox_4,
+ read_mailbox_5,
+ read_mailbox_6,
+ read_mailbox_7
+};
+
+static irqreturn_t prcmu_irq_handler(int irq, void *data)
+{
+ u32 bits;
+ u8 n;
+ irqreturn_t r;
+
+ bits = (readl(PRCM_ARM_IT1_VAL) & ALL_MBOX_BITS);
+ if (unlikely(!bits))
+ return IRQ_NONE;
+
+ r = IRQ_HANDLED;
+ for (n = 0; bits; n++) {
+ if (bits & MBOX_BIT(n)) {
+ bits -= MBOX_BIT(n);
+ if (read_mailbox[n]())
+ r = IRQ_WAKE_THREAD;
+ }
+ }
+ return r;
+}
+
+static irqreturn_t prcmu_irq_thread_fn(int irq, void *data)
+{
+ ack_dbb_wakeup();
+ return IRQ_HANDLED;
+}
+
+void __init db5500_prcmu_early_init(void)
+{
+ tcdm_base = __io_address(U5500_PRCMU_TCDM_BASE);
+ spin_lock_init(&mb0_transfer.lock);
+ mutex_init(&mb5_transfer.lock);
+ init_completion(&mb5_transfer.work);
+}
+
+/**
+ * prcmu_fw_init - arch init call for the Linux PRCMU fw init logic
+ *
+ */
+int __init db5500_prcmu_init(void)
+{
+ int r = 0;
+
+ if (ux500_is_svp() || !cpu_is_u5500())
+ return -ENODEV;
+
+ /* Clean up the mailbox interrupts after pre-kernel code. */
+ writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLEAR);
+
+ r = request_threaded_irq(IRQ_DB5500_PRCMU1, prcmu_irq_handler,
+ prcmu_irq_thread_fn, 0, "prcmu", NULL);
+ if (r < 0) {
+ pr_err("prcmu: Failed to allocate IRQ_DB5500_PRCMU1.\n");
+ return -EBUSY;
+ }
+ return 0;
+}
+
+arch_initcall(db5500_prcmu_init);
diff --git a/drivers/mfd/db8500-prcmu-regs.h b/drivers/mfd/db8500-prcmu-regs.h
new file mode 100644
index 000000000000..3bbf04d58043
--- /dev/null
+++ b/drivers/mfd/db8500-prcmu-regs.h
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) STMicroelectronics 2009
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ * Author: Sundar Iyer <sundar.iyer@stericsson.com>
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * PRCM Unit registers
+ */
+#ifndef __DB8500_PRCMU_REGS_H
+#define __DB8500_PRCMU_REGS_H
+
+#include <linux/bitops.h>
+#include <mach/hardware.h>
+
+#define BITS(_start, _end) ((BIT(_end) - BIT(_start)) + BIT(_end))
+
+#define PRCM_ARM_PLLDIVPS 0x118
+#define PRCM_ARM_PLLDIVPS_ARM_BRM_RATE BITS(0, 5)
+#define PRCM_ARM_PLLDIVPS_MAX_MASK 0xF
+
+#define PRCM_PLLARM_LOCKP 0x0A8
+#define PRCM_PLLARM_LOCKP_PRCM_PLLARM_LOCKP3 BIT(1)
+
+#define PRCM_ARM_CHGCLKREQ 0x114
+#define PRCM_ARM_CHGCLKREQ_PRCM_ARM_CHGCLKREQ BIT(0)
+
+#define PRCM_PLLARM_ENABLE 0x98
+#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_ENABLE BIT(0)
+#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_COUNTON BIT(8)
+
+#define PRCM_ARMCLKFIX_MGT 0x0
+#define PRCM_A9_RESETN_CLR 0x1f4
+#define PRCM_A9_RESETN_SET 0x1f0
+#define PRCM_ARM_LS_CLAMP 0x30C
+#define PRCM_SRAM_A9 0x308
+
+/* ARM WFI Standby signal register */
+#define PRCM_ARM_WFI_STANDBY 0x130
+#define PRCM_IOCR 0x310
+#define PRCM_IOCR_IOFORCE BIT(0)
+
+/* CPU mailbox registers */
+#define PRCM_MBOX_CPU_VAL 0x0FC
+#define PRCM_MBOX_CPU_SET 0x100
+
+/* Dual A9 core interrupt management unit registers */
+#define PRCM_A9_MASK_REQ 0x328
+#define PRCM_A9_MASK_REQ_PRCM_A9_MASK_REQ BIT(0)
+
+#define PRCM_A9_MASK_ACK 0x32C
+#define PRCM_ARMITMSK31TO0 0x11C
+#define PRCM_ARMITMSK63TO32 0x120
+#define PRCM_ARMITMSK95TO64 0x124
+#define PRCM_ARMITMSK127TO96 0x128
+#define PRCM_POWER_STATE_VAL 0x25C
+#define PRCM_ARMITVAL31TO0 0x260
+#define PRCM_ARMITVAL63TO32 0x264
+#define PRCM_ARMITVAL95TO64 0x268
+#define PRCM_ARMITVAL127TO96 0x26C
+
+#define PRCM_HOSTACCESS_REQ 0x334
+#define PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ BIT(0)
+
+#define PRCM_ARM_IT1_CLR 0x48C
+#define PRCM_ARM_IT1_VAL 0x494
+
+#define PRCM_ITSTATUS0 0x148
+#define PRCM_ITSTATUS1 0x150
+#define PRCM_ITSTATUS2 0x158
+#define PRCM_ITSTATUS3 0x160
+#define PRCM_ITSTATUS4 0x168
+#define PRCM_ITSTATUS5 0x484
+#define PRCM_ITCLEAR5 0x488
+#define PRCM_ARMIT_MASKXP70_IT 0x1018
+
+/* System reset register */
+#define PRCM_APE_SOFTRST 0x228
+
+/* Level shifter and clamp control registers */
+#define PRCM_MMIP_LS_CLAMP_SET 0x420
+#define PRCM_MMIP_LS_CLAMP_CLR 0x424
+
+/* PRCMU HW semaphore */
+#define PRCM_SEM 0x400
+#define PRCM_SEM_PRCM_SEM BIT(0)
+
+/* PRCMU clock/PLL/reset registers */
+#define PRCM_PLLDSI_FREQ 0x500
+#define PRCM_PLLDSI_ENABLE 0x504
+#define PRCM_PLLDSI_LOCKP 0x508
+#define PRCM_DSI_PLLOUT_SEL 0x530
+#define PRCM_DSITVCLK_DIV 0x52C
+#define PRCM_APE_RESETN_SET 0x1E4
+#define PRCM_APE_RESETN_CLR 0x1E8
+
+#define PRCM_TCR 0x1C8
+#define PRCM_TCR_TENSEL_MASK BITS(0, 7)
+#define PRCM_TCR_STOP_TIMERS BIT(16)
+#define PRCM_TCR_DOZE_MODE BIT(17)
+
+#define PRCM_CLKOCR 0x1CC
+#define PRCM_CLKOCR_CLKODIV0_SHIFT 0
+#define PRCM_CLKOCR_CLKODIV0_MASK BITS(0, 5)
+#define PRCM_CLKOCR_CLKOSEL0_SHIFT 6
+#define PRCM_CLKOCR_CLKOSEL0_MASK BITS(6, 8)
+#define PRCM_CLKOCR_CLKODIV1_SHIFT 16
+#define PRCM_CLKOCR_CLKODIV1_MASK BITS(16, 21)
+#define PRCM_CLKOCR_CLKOSEL1_SHIFT 22
+#define PRCM_CLKOCR_CLKOSEL1_MASK BITS(22, 24)
+#define PRCM_CLKOCR_CLK1TYPE BIT(28)
+
+#define PRCM_SGACLK_MGT 0x014
+#define PRCM_UARTCLK_MGT 0x018
+#define PRCM_MSP02CLK_MGT 0x01C
+#define PRCM_MSP1CLK_MGT 0x288
+#define PRCM_I2CCLK_MGT 0x020
+#define PRCM_SDMMCCLK_MGT 0x024
+#define PRCM_SLIMCLK_MGT 0x028
+#define PRCM_PER1CLK_MGT 0x02C
+#define PRCM_PER2CLK_MGT 0x030
+#define PRCM_PER3CLK_MGT 0x034
+#define PRCM_PER5CLK_MGT 0x038
+#define PRCM_PER6CLK_MGT 0x03C
+#define PRCM_PER7CLK_MGT 0x040
+#define PRCM_LCDCLK_MGT 0x044
+#define PRCM_BMLCLK_MGT 0x04C
+#define PRCM_HSITXCLK_MGT 0x050
+#define PRCM_HSIRXCLK_MGT 0x054
+#define PRCM_HDMICLK_MGT 0x058
+#define PRCM_APEATCLK_MGT 0x05C
+#define PRCM_APETRACECLK_MGT 0x060
+#define PRCM_MCDECLK_MGT 0x064
+#define PRCM_IPI2CCLK_MGT 0x068
+#define PRCM_DSIALTCLK_MGT 0x06C
+#define PRCM_DMACLK_MGT 0x074
+#define PRCM_B2R2CLK_MGT 0x078
+#define PRCM_TVCLK_MGT 0x07C
+#define PRCM_UNIPROCLK_MGT 0x278
+#define PRCM_SSPCLK_MGT 0x280
+#define PRCM_RNGCLK_MGT 0x284
+#define PRCM_UICCCLK_MGT 0x27C
+
+#define PRCM_CLK_MGT_CLKPLLDIV_MASK BITS(0, 4)
+#define PRCM_CLK_MGT_CLKPLLSW_MASK BITS(5, 7)
+#define PRCM_CLK_MGT_CLKEN BIT(8)
+
+/* ePOD and memory power signal control registers */
+#define PRCM_EPOD_C_SET 0x410
+#define PRCM_SRAM_LS_SLEEP 0x304
+
+/* Debug power control unit registers */
+#define PRCM_POWER_STATE_SET 0x254
+
+/* Miscellaneous unit registers */
+#define PRCM_DSI_SW_RESET 0x324
+#define PRCM_GPIOCR 0x138
+
+/* GPIOCR register */
+#define PRCM_GPIOCR_SPI2_SELECT BIT(23)
+
+#define PRCM_DDR_SUBSYS_APE_MINBW 0x438
+
+#endif /* __DB8500_PRCMU_REGS_H */
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
new file mode 100644
index 000000000000..e63782107e2f
--- /dev/null
+++ b/drivers/mfd/db8500-prcmu.c
@@ -0,0 +1,2069 @@
+/*
+ * Copyright (C) STMicroelectronics 2009
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ * Author: Sundar Iyer <sundar.iyer@stericsson.com>
+ * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
+ *
+ * U8500 PRCM Unit interface driver
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/completion.h>
+#include <linux/irq.h>
+#include <linux/jiffies.h>
+#include <linux/bitops.h>
+#include <linux/fs.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/db8500-prcmu.h>
+#include <linux/regulator/db8500-prcmu.h>
+#include <linux/regulator/machine.h>
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <mach/db8500-regs.h>
+#include <mach/id.h>
+#include "db8500-prcmu-regs.h"
+
+/* Offset for the firmware version within the TCPM */
+#define PRCMU_FW_VERSION_OFFSET 0xA4
+
+/* PRCMU project numbers, defined by PRCMU FW */
+#define PRCMU_PROJECT_ID_8500V1_0 1
+#define PRCMU_PROJECT_ID_8500V2_0 2
+#define PRCMU_PROJECT_ID_8400V2_0 3
+
+/* Index of different voltages to be used when accessing AVSData */
+#define PRCM_AVS_BASE 0x2FC
+#define PRCM_AVS_VBB_RET (PRCM_AVS_BASE + 0x0)
+#define PRCM_AVS_VBB_MAX_OPP (PRCM_AVS_BASE + 0x1)
+#define PRCM_AVS_VBB_100_OPP (PRCM_AVS_BASE + 0x2)
+#define PRCM_AVS_VBB_50_OPP (PRCM_AVS_BASE + 0x3)
+#define PRCM_AVS_VARM_MAX_OPP (PRCM_AVS_BASE + 0x4)
+#define PRCM_AVS_VARM_100_OPP (PRCM_AVS_BASE + 0x5)
+#define PRCM_AVS_VARM_50_OPP (PRCM_AVS_BASE + 0x6)
+#define PRCM_AVS_VARM_RET (PRCM_AVS_BASE + 0x7)
+#define PRCM_AVS_VAPE_100_OPP (PRCM_AVS_BASE + 0x8)
+#define PRCM_AVS_VAPE_50_OPP (PRCM_AVS_BASE + 0x9)
+#define PRCM_AVS_VMOD_100_OPP (PRCM_AVS_BASE + 0xA)
+#define PRCM_AVS_VMOD_50_OPP (PRCM_AVS_BASE + 0xB)
+#define PRCM_AVS_VSAFE (PRCM_AVS_BASE + 0xC)
+
+#define PRCM_AVS_VOLTAGE 0
+#define PRCM_AVS_VOLTAGE_MASK 0x3f
+#define PRCM_AVS_ISSLOWSTARTUP 6
+#define PRCM_AVS_ISSLOWSTARTUP_MASK (1 << PRCM_AVS_ISSLOWSTARTUP)
+#define PRCM_AVS_ISMODEENABLE 7
+#define PRCM_AVS_ISMODEENABLE_MASK (1 << PRCM_AVS_ISMODEENABLE)
+
+#define PRCM_BOOT_STATUS 0xFFF
+#define PRCM_ROMCODE_A2P 0xFFE
+#define PRCM_ROMCODE_P2A 0xFFD
+#define PRCM_XP70_CUR_PWR_STATE 0xFFC /* 4 BYTES */
+
+#define PRCM_SW_RST_REASON 0xFF8 /* 2 bytes */
+
+#define _PRCM_MBOX_HEADER 0xFE8 /* 16 bytes */
+#define PRCM_MBOX_HEADER_REQ_MB0 (_PRCM_MBOX_HEADER + 0x0)
+#define PRCM_MBOX_HEADER_REQ_MB1 (_PRCM_MBOX_HEADER + 0x1)
+#define PRCM_MBOX_HEADER_REQ_MB2 (_PRCM_MBOX_HEADER + 0x2)
+#define PRCM_MBOX_HEADER_REQ_MB3 (_PRCM_MBOX_HEADER + 0x3)
+#define PRCM_MBOX_HEADER_REQ_MB4 (_PRCM_MBOX_HEADER + 0x4)
+#define PRCM_MBOX_HEADER_REQ_MB5 (_PRCM_MBOX_HEADER + 0x5)
+#define PRCM_MBOX_HEADER_ACK_MB0 (_PRCM_MBOX_HEADER + 0x8)
+
+/* Req Mailboxes */
+#define PRCM_REQ_MB0 0xFDC /* 12 bytes */
+#define PRCM_REQ_MB1 0xFD0 /* 12 bytes */
+#define PRCM_REQ_MB2 0xFC0 /* 16 bytes */
+#define PRCM_REQ_MB3 0xE4C /* 372 bytes */
+#define PRCM_REQ_MB4 0xE48 /* 4 bytes */
+#define PRCM_REQ_MB5 0xE44 /* 4 bytes */
+
+/* Ack Mailboxes */
+#define PRCM_ACK_MB0 0xE08 /* 52 bytes */
+#define PRCM_ACK_MB1 0xE04 /* 4 bytes */
+#define PRCM_ACK_MB2 0xE00 /* 4 bytes */
+#define PRCM_ACK_MB3 0xDFC /* 4 bytes */
+#define PRCM_ACK_MB4 0xDF8 /* 4 bytes */
+#define PRCM_ACK_MB5 0xDF4 /* 4 bytes */
+
+/* Mailbox 0 headers */
+#define MB0H_POWER_STATE_TRANS 0
+#define MB0H_CONFIG_WAKEUPS_EXE 1
+#define MB0H_READ_WAKEUP_ACK 3
+#define MB0H_CONFIG_WAKEUPS_SLEEP 4
+
+#define MB0H_WAKEUP_EXE 2
+#define MB0H_WAKEUP_SLEEP 5
+
+/* Mailbox 0 REQs */
+#define PRCM_REQ_MB0_AP_POWER_STATE (PRCM_REQ_MB0 + 0x0)
+#define PRCM_REQ_MB0_AP_PLL_STATE (PRCM_REQ_MB0 + 0x1)
+#define PRCM_REQ_MB0_ULP_CLOCK_STATE (PRCM_REQ_MB0 + 0x2)
+#define PRCM_REQ_MB0_DO_NOT_WFI (PRCM_REQ_MB0 + 0x3)
+#define PRCM_REQ_MB0_WAKEUP_8500 (PRCM_REQ_MB0 + 0x4)
+#define PRCM_REQ_MB0_WAKEUP_4500 (PRCM_REQ_MB0 + 0x8)
+
+/* Mailbox 0 ACKs */
+#define PRCM_ACK_MB0_AP_PWRSTTR_STATUS (PRCM_ACK_MB0 + 0x0)
+#define PRCM_ACK_MB0_READ_POINTER (PRCM_ACK_MB0 + 0x1)
+#define PRCM_ACK_MB0_WAKEUP_0_8500 (PRCM_ACK_MB0 + 0x4)
+#define PRCM_ACK_MB0_WAKEUP_0_4500 (PRCM_ACK_MB0 + 0x8)
+#define PRCM_ACK_MB0_WAKEUP_1_8500 (PRCM_ACK_MB0 + 0x1C)
+#define PRCM_ACK_MB0_WAKEUP_1_4500 (PRCM_ACK_MB0 + 0x20)
+#define PRCM_ACK_MB0_EVENT_4500_NUMBERS 20
+
+/* Mailbox 1 headers */
+#define MB1H_ARM_APE_OPP 0x0
+#define MB1H_RESET_MODEM 0x2
+#define MB1H_REQUEST_APE_OPP_100_VOLT 0x3
+#define MB1H_RELEASE_APE_OPP_100_VOLT 0x4
+#define MB1H_RELEASE_USB_WAKEUP 0x5
+
+/* Mailbox 1 Requests */
+#define PRCM_REQ_MB1_ARM_OPP (PRCM_REQ_MB1 + 0x0)
+#define PRCM_REQ_MB1_APE_OPP (PRCM_REQ_MB1 + 0x1)
+#define PRCM_REQ_MB1_APE_OPP_100_RESTORE (PRCM_REQ_MB1 + 0x4)
+#define PRCM_REQ_MB1_ARM_OPP_100_RESTORE (PRCM_REQ_MB1 + 0x8)
+
+/* Mailbox 1 ACKs */
+#define PRCM_ACK_MB1_CURRENT_ARM_OPP (PRCM_ACK_MB1 + 0x0)
+#define PRCM_ACK_MB1_CURRENT_APE_OPP (PRCM_ACK_MB1 + 0x1)
+#define PRCM_ACK_MB1_APE_VOLTAGE_STATUS (PRCM_ACK_MB1 + 0x2)
+#define PRCM_ACK_MB1_DVFS_STATUS (PRCM_ACK_MB1 + 0x3)
+
+/* Mailbox 2 headers */
+#define MB2H_DPS 0x0
+#define MB2H_AUTO_PWR 0x1
+
+/* Mailbox 2 REQs */
+#define PRCM_REQ_MB2_SVA_MMDSP (PRCM_REQ_MB2 + 0x0)
+#define PRCM_REQ_MB2_SVA_PIPE (PRCM_REQ_MB2 + 0x1)
+#define PRCM_REQ_MB2_SIA_MMDSP (PRCM_REQ_MB2 + 0x2)
+#define PRCM_REQ_MB2_SIA_PIPE (PRCM_REQ_MB2 + 0x3)
+#define PRCM_REQ_MB2_SGA (PRCM_REQ_MB2 + 0x4)
+#define PRCM_REQ_MB2_B2R2_MCDE (PRCM_REQ_MB2 + 0x5)
+#define PRCM_REQ_MB2_ESRAM12 (PRCM_REQ_MB2 + 0x6)
+#define PRCM_REQ_MB2_ESRAM34 (PRCM_REQ_MB2 + 0x7)
+#define PRCM_REQ_MB2_AUTO_PM_SLEEP (PRCM_REQ_MB2 + 0x8)
+#define PRCM_REQ_MB2_AUTO_PM_IDLE (PRCM_REQ_MB2 + 0xC)
+
+/* Mailbox 2 ACKs */
+#define PRCM_ACK_MB2_DPS_STATUS (PRCM_ACK_MB2 + 0x0)
+#define HWACC_PWR_ST_OK 0xFE
+
+/* Mailbox 3 headers */
+#define MB3H_ANC 0x0
+#define MB3H_SIDETONE 0x1
+#define MB3H_SYSCLK 0xE
+
+/* Mailbox 3 Requests */
+#define PRCM_REQ_MB3_ANC_FIR_COEFF (PRCM_REQ_MB3 + 0x0)
+#define PRCM_REQ_MB3_ANC_IIR_COEFF (PRCM_REQ_MB3 + 0x20)
+#define PRCM_REQ_MB3_ANC_SHIFTER (PRCM_REQ_MB3 + 0x60)
+#define PRCM_REQ_MB3_ANC_WARP (PRCM_REQ_MB3 + 0x64)
+#define PRCM_REQ_MB3_SIDETONE_FIR_GAIN (PRCM_REQ_MB3 + 0x68)
+#define PRCM_REQ_MB3_SIDETONE_FIR_COEFF (PRCM_REQ_MB3 + 0x6C)
+#define PRCM_REQ_MB3_SYSCLK_MGT (PRCM_REQ_MB3 + 0x16C)
+
+/* Mailbox 4 headers */
+#define MB4H_DDR_INIT 0x0
+#define MB4H_MEM_ST 0x1
+#define MB4H_HOTDOG 0x12
+#define MB4H_HOTMON 0x13
+#define MB4H_HOT_PERIOD 0x14
+
+/* Mailbox 4 Requests */
+#define PRCM_REQ_MB4_DDR_ST_AP_SLEEP_IDLE (PRCM_REQ_MB4 + 0x0)
+#define PRCM_REQ_MB4_DDR_ST_AP_DEEP_IDLE (PRCM_REQ_MB4 + 0x1)
+#define PRCM_REQ_MB4_ESRAM0_ST (PRCM_REQ_MB4 + 0x3)
+#define PRCM_REQ_MB4_HOTDOG_THRESHOLD (PRCM_REQ_MB4 + 0x0)
+#define PRCM_REQ_MB4_HOTMON_LOW (PRCM_REQ_MB4 + 0x0)
+#define PRCM_REQ_MB4_HOTMON_HIGH (PRCM_REQ_MB4 + 0x1)
+#define PRCM_REQ_MB4_HOTMON_CONFIG (PRCM_REQ_MB4 + 0x2)
+#define PRCM_REQ_MB4_HOT_PERIOD (PRCM_REQ_MB4 + 0x0)
+#define HOTMON_CONFIG_LOW BIT(0)
+#define HOTMON_CONFIG_HIGH BIT(1)
+
+/* Mailbox 5 Requests */
+#define PRCM_REQ_MB5_I2C_SLAVE_OP (PRCM_REQ_MB5 + 0x0)
+#define PRCM_REQ_MB5_I2C_HW_BITS (PRCM_REQ_MB5 + 0x1)
+#define PRCM_REQ_MB5_I2C_REG (PRCM_REQ_MB5 + 0x2)
+#define PRCM_REQ_MB5_I2C_VAL (PRCM_REQ_MB5 + 0x3)
+#define PRCMU_I2C_WRITE(slave) \
+ (((slave) << 1) | (cpu_is_u8500v2() ? BIT(6) : 0))
+#define PRCMU_I2C_READ(slave) \
+ (((slave) << 1) | BIT(0) | (cpu_is_u8500v2() ? BIT(6) : 0))
+#define PRCMU_I2C_STOP_EN BIT(3)
+
+/* Mailbox 5 ACKs */
+#define PRCM_ACK_MB5_I2C_STATUS (PRCM_ACK_MB5 + 0x1)
+#define PRCM_ACK_MB5_I2C_VAL (PRCM_ACK_MB5 + 0x3)
+#define I2C_WR_OK 0x1
+#define I2C_RD_OK 0x2
+
+#define NUM_MB 8
+#define MBOX_BIT BIT
+#define ALL_MBOX_BITS (MBOX_BIT(NUM_MB) - 1)
+
+/*
+ * Wakeups/IRQs
+ */
+
+#define WAKEUP_BIT_RTC BIT(0)
+#define WAKEUP_BIT_RTT0 BIT(1)
+#define WAKEUP_BIT_RTT1 BIT(2)
+#define WAKEUP_BIT_HSI0 BIT(3)
+#define WAKEUP_BIT_HSI1 BIT(4)
+#define WAKEUP_BIT_CA_WAKE BIT(5)
+#define WAKEUP_BIT_USB BIT(6)
+#define WAKEUP_BIT_ABB BIT(7)
+#define WAKEUP_BIT_ABB_FIFO BIT(8)
+#define WAKEUP_BIT_SYSCLK_OK BIT(9)
+#define WAKEUP_BIT_CA_SLEEP BIT(10)
+#define WAKEUP_BIT_AC_WAKE_ACK BIT(11)
+#define WAKEUP_BIT_SIDE_TONE_OK BIT(12)
+#define WAKEUP_BIT_ANC_OK BIT(13)
+#define WAKEUP_BIT_SW_ERROR BIT(14)
+#define WAKEUP_BIT_AC_SLEEP_ACK BIT(15)
+#define WAKEUP_BIT_ARM BIT(17)
+#define WAKEUP_BIT_HOTMON_LOW BIT(18)
+#define WAKEUP_BIT_HOTMON_HIGH BIT(19)
+#define WAKEUP_BIT_MODEM_SW_RESET_REQ BIT(20)
+#define WAKEUP_BIT_GPIO0 BIT(23)
+#define WAKEUP_BIT_GPIO1 BIT(24)
+#define WAKEUP_BIT_GPIO2 BIT(25)
+#define WAKEUP_BIT_GPIO3 BIT(26)
+#define WAKEUP_BIT_GPIO4 BIT(27)
+#define WAKEUP_BIT_GPIO5 BIT(28)
+#define WAKEUP_BIT_GPIO6 BIT(29)
+#define WAKEUP_BIT_GPIO7 BIT(30)
+#define WAKEUP_BIT_GPIO8 BIT(31)
+
+/*
+ * This vector maps irq numbers to the bits in the bit field used in
+ * communication with the PRCMU firmware.
+ *
+ * The reason for having this is to keep the irq numbers contiguous even though
+ * the bits in the bit field are not. (The bits also have a tendency to move
+ * around, to further complicate matters.)
+ */
+#define IRQ_INDEX(_name) ((IRQ_PRCMU_##_name) - IRQ_PRCMU_BASE)
+#define IRQ_ENTRY(_name)[IRQ_INDEX(_name)] = (WAKEUP_BIT_##_name)
+static u32 prcmu_irq_bit[NUM_PRCMU_WAKEUPS] = {
+ IRQ_ENTRY(RTC),
+ IRQ_ENTRY(RTT0),
+ IRQ_ENTRY(RTT1),
+ IRQ_ENTRY(HSI0),
+ IRQ_ENTRY(HSI1),
+ IRQ_ENTRY(CA_WAKE),
+ IRQ_ENTRY(USB),
+ IRQ_ENTRY(ABB),
+ IRQ_ENTRY(ABB_FIFO),
+ IRQ_ENTRY(CA_SLEEP),
+ IRQ_ENTRY(ARM),
+ IRQ_ENTRY(HOTMON_LOW),
+ IRQ_ENTRY(HOTMON_HIGH),
+ IRQ_ENTRY(MODEM_SW_RESET_REQ),
+ IRQ_ENTRY(GPIO0),
+ IRQ_ENTRY(GPIO1),
+ IRQ_ENTRY(GPIO2),
+ IRQ_ENTRY(GPIO3),
+ IRQ_ENTRY(GPIO4),
+ IRQ_ENTRY(GPIO5),
+ IRQ_ENTRY(GPIO6),
+ IRQ_ENTRY(GPIO7),
+ IRQ_ENTRY(GPIO8)
+};
+
+#define VALID_WAKEUPS (BIT(NUM_PRCMU_WAKEUP_INDICES) - 1)
+#define WAKEUP_ENTRY(_name)[PRCMU_WAKEUP_INDEX_##_name] = (WAKEUP_BIT_##_name)
+static u32 prcmu_wakeup_bit[NUM_PRCMU_WAKEUP_INDICES] = {
+ WAKEUP_ENTRY(RTC),
+ WAKEUP_ENTRY(RTT0),
+ WAKEUP_ENTRY(RTT1),
+ WAKEUP_ENTRY(HSI0),
+ WAKEUP_ENTRY(HSI1),
+ WAKEUP_ENTRY(USB),
+ WAKEUP_ENTRY(ABB),
+ WAKEUP_ENTRY(ABB_FIFO),
+ WAKEUP_ENTRY(ARM)
+};
+
+/*
+ * mb0_transfer - state needed for mailbox 0 communication.
+ * @lock: The transaction lock.
+ * @dbb_events_lock: A lock used to handle concurrent access to (parts of)
+ * the request data.
+ * @mask_work: Work structure used for (un)masking wakeup interrupts.
+ * @req: Request data that need to persist between requests.
+ */
+static struct {
+ spinlock_t lock;
+ spinlock_t dbb_irqs_lock;
+ struct work_struct mask_work;
+ struct mutex ac_wake_lock;
+ struct completion ac_wake_work;
+ struct {
+ u32 dbb_irqs;
+ u32 dbb_wakeups;
+ u32 abb_events;
+ } req;
+} mb0_transfer;
+
+/*
+ * mb1_transfer - state needed for mailbox 1 communication.
+ * @lock: The transaction lock.
+ * @work: The transaction completion structure.
+ * @ack: Reply ("acknowledge") data.
+ */
+static struct {
+ struct mutex lock;
+ struct completion work;
+ struct {
+ u8 header;
+ u8 arm_opp;
+ u8 ape_opp;
+ u8 ape_voltage_status;
+ } ack;
+} mb1_transfer;
+
+/*
+ * mb2_transfer - state needed for mailbox 2 communication.
+ * @lock: The transaction lock.
+ * @work: The transaction completion structure.
+ * @auto_pm_lock: The autonomous power management configuration lock.
+ * @auto_pm_enabled: A flag indicating whether autonomous PM is enabled.
+ * @req: Request data that need to persist between requests.
+ * @ack: Reply ("acknowledge") data.
+ */
+static struct {
+ struct mutex lock;
+ struct completion work;
+ spinlock_t auto_pm_lock;
+ bool auto_pm_enabled;
+ struct {
+ u8 status;
+ } ack;
+} mb2_transfer;
+
+/*
+ * mb3_transfer - state needed for mailbox 3 communication.
+ * @lock: The request lock.
+ * @sysclk_lock: A lock used to handle concurrent sysclk requests.
+ * @sysclk_work: Work structure used for sysclk requests.
+ */
+static struct {
+ spinlock_t lock;
+ struct mutex sysclk_lock;
+ struct completion sysclk_work;
+} mb3_transfer;
+
+/*
+ * mb4_transfer - state needed for mailbox 4 communication.
+ * @lock: The transaction lock.
+ * @work: The transaction completion structure.
+ */
+static struct {
+ struct mutex lock;
+ struct completion work;
+} mb4_transfer;
+
+/*
+ * mb5_transfer - state needed for mailbox 5 communication.
+ * @lock: The transaction lock.
+ * @work: The transaction completion structure.
+ * @ack: Reply ("acknowledge") data.
+ */
+static struct {
+ struct mutex lock;
+ struct completion work;
+ struct {
+ u8 status;
+ u8 value;
+ } ack;
+} mb5_transfer;
+
+static atomic_t ac_wake_req_state = ATOMIC_INIT(0);
+
+/* Spinlocks */
+static DEFINE_SPINLOCK(clkout_lock);
+static DEFINE_SPINLOCK(gpiocr_lock);
+
+/* Global var to runtime determine TCDM base for v2 or v1 */
+static __iomem void *tcdm_base;
+
+struct clk_mgt {
+ unsigned int offset;
+ u32 pllsw;
+};
+
+static DEFINE_SPINLOCK(clk_mgt_lock);
+
+#define CLK_MGT_ENTRY(_name)[PRCMU_##_name] = { (PRCM_##_name##_MGT), 0 }
+struct clk_mgt clk_mgt[PRCMU_NUM_REG_CLOCKS] = {
+ CLK_MGT_ENTRY(SGACLK),
+ CLK_MGT_ENTRY(UARTCLK),
+ CLK_MGT_ENTRY(MSP02CLK),
+ CLK_MGT_ENTRY(MSP1CLK),
+ CLK_MGT_ENTRY(I2CCLK),
+ CLK_MGT_ENTRY(SDMMCCLK),
+ CLK_MGT_ENTRY(SLIMCLK),
+ CLK_MGT_ENTRY(PER1CLK),
+ CLK_MGT_ENTRY(PER2CLK),
+ CLK_MGT_ENTRY(PER3CLK),
+ CLK_MGT_ENTRY(PER5CLK),
+ CLK_MGT_ENTRY(PER6CLK),
+ CLK_MGT_ENTRY(PER7CLK),
+ CLK_MGT_ENTRY(LCDCLK),
+ CLK_MGT_ENTRY(BMLCLK),
+ CLK_MGT_ENTRY(HSITXCLK),
+ CLK_MGT_ENTRY(HSIRXCLK),
+ CLK_MGT_ENTRY(HDMICLK),
+ CLK_MGT_ENTRY(APEATCLK),
+ CLK_MGT_ENTRY(APETRACECLK),
+ CLK_MGT_ENTRY(MCDECLK),
+ CLK_MGT_ENTRY(IPI2CCLK),
+ CLK_MGT_ENTRY(DSIALTCLK),
+ CLK_MGT_ENTRY(DMACLK),
+ CLK_MGT_ENTRY(B2R2CLK),
+ CLK_MGT_ENTRY(TVCLK),
+ CLK_MGT_ENTRY(SSPCLK),
+ CLK_MGT_ENTRY(RNGCLK),
+ CLK_MGT_ENTRY(UICCCLK),
+};
+
+/*
+* Used by MCDE to setup all necessary PRCMU registers
+*/
+#define PRCMU_RESET_DSIPLL 0x00004000
+#define PRCMU_UNCLAMP_DSIPLL 0x00400800
+
+#define PRCMU_CLK_PLL_DIV_SHIFT 0
+#define PRCMU_CLK_PLL_SW_SHIFT 5
+#define PRCMU_CLK_38 (1 << 9)
+#define PRCMU_CLK_38_SRC (1 << 10)
+#define PRCMU_CLK_38_DIV (1 << 11)
+
+/* PLLDIV=12, PLLSW=4 (PLLDDR) */
+#define PRCMU_DSI_CLOCK_SETTING 0x0000008C
+
+/* PLLDIV=8, PLLSW=4 (PLLDDR) */
+#define PRCMU_DSI_CLOCK_SETTING_U8400 0x00000088
+
+/* DPI 50000000 Hz */
+#define PRCMU_DPI_CLOCK_SETTING ((1 << PRCMU_CLK_PLL_SW_SHIFT) | \
+ (16 << PRCMU_CLK_PLL_DIV_SHIFT))
+#define PRCMU_DSI_LP_CLOCK_SETTING 0x00000E00
+
+/* D=101, N=1, R=4, SELDIV2=0 */
+#define PRCMU_PLLDSI_FREQ_SETTING 0x00040165
+
+/* D=70, N=1, R=3, SELDIV2=0 */
+#define PRCMU_PLLDSI_FREQ_SETTING_U8400 0x00030146
+
+#define PRCMU_ENABLE_PLLDSI 0x00000001
+#define PRCMU_DISABLE_PLLDSI 0x00000000
+#define PRCMU_RELEASE_RESET_DSS 0x0000400C
+#define PRCMU_DSI_PLLOUT_SEL_SETTING 0x00000202
+/* ESC clk, div0=1, div1=1, div2=3 */
+#define PRCMU_ENABLE_ESCAPE_CLOCK_DIV 0x07030101
+#define PRCMU_DISABLE_ESCAPE_CLOCK_DIV 0x00030101
+#define PRCMU_DSI_RESET_SW 0x00000007
+
+#define PRCMU_PLLDSI_LOCKP_LOCKED 0x3
+
+static struct {
+ u8 project_number;
+ u8 api_version;
+ u8 func_version;
+ u8 errata;
+} prcmu_version;
+
+
+int prcmu_enable_dsipll(void)
+{
+ int i;
+ unsigned int plldsifreq;
+
+ /* Clear DSIPLL_RESETN */
+ writel(PRCMU_RESET_DSIPLL, (_PRCMU_BASE + PRCM_APE_RESETN_CLR));
+ /* Unclamp DSIPLL in/out */
+ writel(PRCMU_UNCLAMP_DSIPLL, (_PRCMU_BASE + PRCM_MMIP_LS_CLAMP_CLR));
+
+ if (prcmu_is_u8400())
+ plldsifreq = PRCMU_PLLDSI_FREQ_SETTING_U8400;
+ else
+ plldsifreq = PRCMU_PLLDSI_FREQ_SETTING;
+ /* Set DSI PLL FREQ */
+ writel(plldsifreq, (_PRCMU_BASE + PRCM_PLLDSI_FREQ));
+ writel(PRCMU_DSI_PLLOUT_SEL_SETTING,
+ (_PRCMU_BASE + PRCM_DSI_PLLOUT_SEL));
+ /* Enable Escape clocks */
+ writel(PRCMU_ENABLE_ESCAPE_CLOCK_DIV,
+ (_PRCMU_BASE + PRCM_DSITVCLK_DIV));
+
+ /* Start DSI PLL */
+ writel(PRCMU_ENABLE_PLLDSI, (_PRCMU_BASE + PRCM_PLLDSI_ENABLE));
+ /* Reset DSI PLL */
+ writel(PRCMU_DSI_RESET_SW, (_PRCMU_BASE + PRCM_DSI_SW_RESET));
+ for (i = 0; i < 10; i++) {
+ if ((readl(_PRCMU_BASE + PRCM_PLLDSI_LOCKP) &
+ PRCMU_PLLDSI_LOCKP_LOCKED)
+ == PRCMU_PLLDSI_LOCKP_LOCKED)
+ break;
+ udelay(100);
+ }
+ /* Set DSIPLL_RESETN */
+ writel(PRCMU_RESET_DSIPLL, (_PRCMU_BASE + PRCM_APE_RESETN_SET));
+ return 0;
+}
+
+int prcmu_disable_dsipll(void)
+{
+ /* Disable dsi pll */
+ writel(PRCMU_DISABLE_PLLDSI, (_PRCMU_BASE + PRCM_PLLDSI_ENABLE));
+ /* Disable escapeclock */
+ writel(PRCMU_DISABLE_ESCAPE_CLOCK_DIV,
+ (_PRCMU_BASE + PRCM_DSITVCLK_DIV));
+ return 0;
+}
+
+int prcmu_set_display_clocks(void)
+{
+ unsigned long flags;
+ unsigned int dsiclk;
+
+ if (prcmu_is_u8400())
+ dsiclk = PRCMU_DSI_CLOCK_SETTING_U8400;
+ else
+ dsiclk = PRCMU_DSI_CLOCK_SETTING;
+
+ spin_lock_irqsave(&clk_mgt_lock, flags);
+
+ /* Grab the HW semaphore. */
+ while ((readl(_PRCMU_BASE + PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0)
+ cpu_relax();
+
+ writel(dsiclk, (_PRCMU_BASE + PRCM_HDMICLK_MGT));
+ writel(PRCMU_DSI_LP_CLOCK_SETTING, (_PRCMU_BASE + PRCM_TVCLK_MGT));
+ writel(PRCMU_DPI_CLOCK_SETTING, (_PRCMU_BASE + PRCM_LCDCLK_MGT));
+
+ /* Release the HW semaphore. */
+ writel(0, (_PRCMU_BASE + PRCM_SEM));
+
+ spin_unlock_irqrestore(&clk_mgt_lock, flags);
+
+ return 0;
+}
+
+/**
+ * prcmu_enable_spi2 - Enables pin muxing for SPI2 on OtherAlternateC1.
+ */
+void prcmu_enable_spi2(void)
+{
+ u32 reg;
+ unsigned long flags;
+
+ spin_lock_irqsave(&gpiocr_lock, flags);
+ reg = readl(_PRCMU_BASE + PRCM_GPIOCR);
+ writel(reg | PRCM_GPIOCR_SPI2_SELECT, _PRCMU_BASE + PRCM_GPIOCR);
+ spin_unlock_irqrestore(&gpiocr_lock, flags);
+}
+
+/**
+ * prcmu_disable_spi2 - Disables pin muxing for SPI2 on OtherAlternateC1.
+ */
+void prcmu_disable_spi2(void)
+{
+ u32 reg;
+ unsigned long flags;
+
+ spin_lock_irqsave(&gpiocr_lock, flags);
+ reg = readl(_PRCMU_BASE + PRCM_GPIOCR);
+ writel(reg & ~PRCM_GPIOCR_SPI2_SELECT, _PRCMU_BASE + PRCM_GPIOCR);
+ spin_unlock_irqrestore(&gpiocr_lock, flags);
+}
+
+bool prcmu_has_arm_maxopp(void)
+{
+ return (readb(tcdm_base + PRCM_AVS_VARM_MAX_OPP) &
+ PRCM_AVS_ISMODEENABLE_MASK) == PRCM_AVS_ISMODEENABLE_MASK;
+}
+
+bool prcmu_is_u8400(void)
+{
+ return prcmu_version.project_number == PRCMU_PROJECT_ID_8400V2_0;
+}
+
+/**
+ * prcmu_get_boot_status - PRCMU boot status checking
+ * Returns: the current PRCMU boot status
+ */
+int prcmu_get_boot_status(void)
+{
+ return readb(tcdm_base + PRCM_BOOT_STATUS);
+}
+
+/**
+ * prcmu_set_rc_a2p - This function is used to run few power state sequences
+ * @val: Value to be set, i.e. transition requested
+ * Returns: 0 on success, -EINVAL on invalid argument
+ *
+ * This function is used to run the following power state sequences -
+ * any state to ApReset, ApDeepSleep to ApExecute, ApExecute to ApDeepSleep
+ */
+int prcmu_set_rc_a2p(enum romcode_write val)
+{
+ if (val < RDY_2_DS || val > RDY_2_XP70_RST)
+ return -EINVAL;
+ writeb(val, (tcdm_base + PRCM_ROMCODE_A2P));
+ return 0;
+}
+
+/**
+ * prcmu_get_rc_p2a - This function is used to get power state sequences
+ * Returns: the power transition that has last happened
+ *
+ * This function can return the following transitions-
+ * any state to ApReset, ApDeepSleep to ApExecute, ApExecute to ApDeepSleep
+ */
+enum romcode_read prcmu_get_rc_p2a(void)
+{
+ return readb(tcdm_base + PRCM_ROMCODE_P2A);
+}
+
+/**
+ * prcmu_get_current_mode - Return the current XP70 power mode
+ * Returns: Returns the current AP(ARM) power mode: init,
+ * apBoot, apExecute, apDeepSleep, apSleep, apIdle, apReset
+ */
+enum ap_pwrst prcmu_get_xp70_current_state(void)
+{
+ return readb(tcdm_base + PRCM_XP70_CUR_PWR_STATE);
+}
+
+/**
+ * prcmu_config_clkout - Configure one of the programmable clock outputs.
+ * @clkout: The CLKOUT number (0 or 1).
+ * @source: The clock to be used (one of the PRCMU_CLKSRC_*).
+ * @div: The divider to be applied.
+ *
+ * Configures one of the programmable clock outputs (CLKOUTs).
+ * @div should be in the range [1,63] to request a configuration, or 0 to
+ * inform that the configuration is no longer requested.
+ */
+int prcmu_config_clkout(u8 clkout, u8 source, u8 div)
+{
+ static int requests[2];
+ int r = 0;
+ unsigned long flags;
+ u32 val;
+ u32 bits;
+ u32 mask;
+ u32 div_mask;
+
+ BUG_ON(clkout > 1);
+ BUG_ON(div > 63);
+ BUG_ON((clkout == 0) && (source > PRCMU_CLKSRC_CLK009));
+
+ if (!div && !requests[clkout])
+ return -EINVAL;
+
+ switch (clkout) {
+ case 0:
+ div_mask = PRCM_CLKOCR_CLKODIV0_MASK;
+ mask = (PRCM_CLKOCR_CLKODIV0_MASK | PRCM_CLKOCR_CLKOSEL0_MASK);
+ bits = ((source << PRCM_CLKOCR_CLKOSEL0_SHIFT) |
+ (div << PRCM_CLKOCR_CLKODIV0_SHIFT));
+ break;
+ case 1:
+ div_mask = PRCM_CLKOCR_CLKODIV1_MASK;
+ mask = (PRCM_CLKOCR_CLKODIV1_MASK | PRCM_CLKOCR_CLKOSEL1_MASK |
+ PRCM_CLKOCR_CLK1TYPE);
+ bits = ((source << PRCM_CLKOCR_CLKOSEL1_SHIFT) |
+ (div << PRCM_CLKOCR_CLKODIV1_SHIFT));
+ break;
+ }
+ bits &= mask;
+
+ spin_lock_irqsave(&clkout_lock, flags);
+
+ val = readl(_PRCMU_BASE + PRCM_CLKOCR);
+ if (val & div_mask) {
+ if (div) {
+ if ((val & mask) != bits) {
+ r = -EBUSY;
+ goto unlock_and_return;
+ }
+ } else {
+ if ((val & mask & ~div_mask) != bits) {
+ r = -EINVAL;
+ goto unlock_and_return;
+ }
+ }
+ }
+ writel((bits | (val & ~mask)), (_PRCMU_BASE + PRCM_CLKOCR));
+ requests[clkout] += (div ? 1 : -1);
+
+unlock_and_return:
+ spin_unlock_irqrestore(&clkout_lock, flags);
+
+ return r;
+}
+
+int prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll)
+{
+ unsigned long flags;
+
+ BUG_ON((state < PRCMU_AP_SLEEP) || (PRCMU_AP_DEEP_IDLE < state));
+
+ spin_lock_irqsave(&mb0_transfer.lock, flags);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(0))
+ cpu_relax();
+
+ writeb(MB0H_POWER_STATE_TRANS, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0));
+ writeb(state, (tcdm_base + PRCM_REQ_MB0_AP_POWER_STATE));
+ writeb((keep_ap_pll ? 1 : 0), (tcdm_base + PRCM_REQ_MB0_AP_PLL_STATE));
+ writeb((keep_ulp_clk ? 1 : 0),
+ (tcdm_base + PRCM_REQ_MB0_ULP_CLOCK_STATE));
+ writeb(0, (tcdm_base + PRCM_REQ_MB0_DO_NOT_WFI));
+ writel(MBOX_BIT(0), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+
+ spin_unlock_irqrestore(&mb0_transfer.lock, flags);
+
+ return 0;
+}
+
+/* This function should only be called while mb0_transfer.lock is held. */
+static void config_wakeups(void)
+{
+ const u8 header[2] = {
+ MB0H_CONFIG_WAKEUPS_EXE,
+ MB0H_CONFIG_WAKEUPS_SLEEP
+ };
+ static u32 last_dbb_events;
+ static u32 last_abb_events;
+ u32 dbb_events;
+ u32 abb_events;
+ unsigned int i;
+
+ dbb_events = mb0_transfer.req.dbb_irqs | mb0_transfer.req.dbb_wakeups;
+ dbb_events |= (WAKEUP_BIT_AC_WAKE_ACK | WAKEUP_BIT_AC_SLEEP_ACK);
+
+ abb_events = mb0_transfer.req.abb_events;
+
+ if ((dbb_events == last_dbb_events) && (abb_events == last_abb_events))
+ return;
+
+ for (i = 0; i < 2; i++) {
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(0))
+ cpu_relax();
+ writel(dbb_events, (tcdm_base + PRCM_REQ_MB0_WAKEUP_8500));
+ writel(abb_events, (tcdm_base + PRCM_REQ_MB0_WAKEUP_4500));
+ writeb(header[i], (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0));
+ writel(MBOX_BIT(0), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ }
+ last_dbb_events = dbb_events;
+ last_abb_events = abb_events;
+}
+
+void prcmu_enable_wakeups(u32 wakeups)
+{
+ unsigned long flags;
+ u32 bits;
+ int i;
+
+ BUG_ON(wakeups != (wakeups & VALID_WAKEUPS));
+
+ for (i = 0, bits = 0; i < NUM_PRCMU_WAKEUP_INDICES; i++) {
+ if (wakeups & BIT(i))
+ bits |= prcmu_wakeup_bit[i];
+ }
+
+ spin_lock_irqsave(&mb0_transfer.lock, flags);
+
+ mb0_transfer.req.dbb_wakeups = bits;
+ config_wakeups();
+
+ spin_unlock_irqrestore(&mb0_transfer.lock, flags);
+}
+
+void prcmu_config_abb_event_readout(u32 abb_events)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mb0_transfer.lock, flags);
+
+ mb0_transfer.req.abb_events = abb_events;
+ config_wakeups();
+
+ spin_unlock_irqrestore(&mb0_transfer.lock, flags);
+}
+
+void prcmu_get_abb_event_buffer(void __iomem **buf)
+{
+ if (readb(tcdm_base + PRCM_ACK_MB0_READ_POINTER) & 1)
+ *buf = (tcdm_base + PRCM_ACK_MB0_WAKEUP_1_4500);
+ else
+ *buf = (tcdm_base + PRCM_ACK_MB0_WAKEUP_0_4500);
+}
+
+/**
+ * prcmu_set_arm_opp - set the appropriate ARM OPP
+ * @opp: The new ARM operating point to which transition is to be made
+ * Returns: 0 on success, non-zero on failure
+ *
+ * This function sets the the operating point of the ARM.
+ */
+int prcmu_set_arm_opp(u8 opp)
+{
+ int r;
+
+ if (opp < ARM_NO_CHANGE || opp > ARM_EXTCLK)
+ return -EINVAL;
+
+ r = 0;
+
+ mutex_lock(&mb1_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1))
+ cpu_relax();
+
+ writeb(MB1H_ARM_APE_OPP, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1));
+ writeb(opp, (tcdm_base + PRCM_REQ_MB1_ARM_OPP));
+ writeb(APE_NO_CHANGE, (tcdm_base + PRCM_REQ_MB1_APE_OPP));
+
+ writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb1_transfer.work);
+
+ if ((mb1_transfer.ack.header != MB1H_ARM_APE_OPP) ||
+ (mb1_transfer.ack.arm_opp != opp))
+ r = -EIO;
+
+ mutex_unlock(&mb1_transfer.lock);
+
+ return r;
+}
+
+/**
+ * prcmu_get_arm_opp - get the current ARM OPP
+ *
+ * Returns: the current ARM OPP
+ */
+int prcmu_get_arm_opp(void)
+{
+ return readb(tcdm_base + PRCM_ACK_MB1_CURRENT_ARM_OPP);
+}
+
+/**
+ * prcmu_get_ddr_opp - get the current DDR OPP
+ *
+ * Returns: the current DDR OPP
+ */
+int prcmu_get_ddr_opp(void)
+{
+ return readb(_PRCMU_BASE + PRCM_DDR_SUBSYS_APE_MINBW);
+}
+
+/**
+ * set_ddr_opp - set the appropriate DDR OPP
+ * @opp: The new DDR operating point to which transition is to be made
+ * Returns: 0 on success, non-zero on failure
+ *
+ * This function sets the operating point of the DDR.
+ */
+int prcmu_set_ddr_opp(u8 opp)
+{
+ if (opp < DDR_100_OPP || opp > DDR_25_OPP)
+ return -EINVAL;
+ /* Changing the DDR OPP can hang the hardware pre-v21 */
+ if (cpu_is_u8500v20_or_later() && !cpu_is_u8500v20())
+ writeb(opp, (_PRCMU_BASE + PRCM_DDR_SUBSYS_APE_MINBW));
+
+ return 0;
+}
+/**
+ * set_ape_opp - set the appropriate APE OPP
+ * @opp: The new APE operating point to which transition is to be made
+ * Returns: 0 on success, non-zero on failure
+ *
+ * This function sets the operating point of the APE.
+ */
+int prcmu_set_ape_opp(u8 opp)
+{
+ int r = 0;
+
+ mutex_lock(&mb1_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1))
+ cpu_relax();
+
+ writeb(MB1H_ARM_APE_OPP, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1));
+ writeb(ARM_NO_CHANGE, (tcdm_base + PRCM_REQ_MB1_ARM_OPP));
+ writeb(opp, (tcdm_base + PRCM_REQ_MB1_APE_OPP));
+
+ writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb1_transfer.work);
+
+ if ((mb1_transfer.ack.header != MB1H_ARM_APE_OPP) ||
+ (mb1_transfer.ack.ape_opp != opp))
+ r = -EIO;
+
+ mutex_unlock(&mb1_transfer.lock);
+
+ return r;
+}
+
+/**
+ * prcmu_get_ape_opp - get the current APE OPP
+ *
+ * Returns: the current APE OPP
+ */
+int prcmu_get_ape_opp(void)
+{
+ return readb(tcdm_base + PRCM_ACK_MB1_CURRENT_APE_OPP);
+}
+
+/**
+ * prcmu_request_ape_opp_100_voltage - Request APE OPP 100% voltage
+ * @enable: true to request the higher voltage, false to drop a request.
+ *
+ * Calls to this function to enable and disable requests must be balanced.
+ */
+int prcmu_request_ape_opp_100_voltage(bool enable)
+{
+ int r = 0;
+ u8 header;
+ static unsigned int requests;
+
+ mutex_lock(&mb1_transfer.lock);
+
+ if (enable) {
+ if (0 != requests++)
+ goto unlock_and_return;
+ header = MB1H_REQUEST_APE_OPP_100_VOLT;
+ } else {
+ if (requests == 0) {
+ r = -EIO;
+ goto unlock_and_return;
+ } else if (1 != requests--) {
+ goto unlock_and_return;
+ }
+ header = MB1H_RELEASE_APE_OPP_100_VOLT;
+ }
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1))
+ cpu_relax();
+
+ writeb(header, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1));
+
+ writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb1_transfer.work);
+
+ if ((mb1_transfer.ack.header != header) ||
+ ((mb1_transfer.ack.ape_voltage_status & BIT(0)) != 0))
+ r = -EIO;
+
+unlock_and_return:
+ mutex_unlock(&mb1_transfer.lock);
+
+ return r;
+}
+
+/**
+ * prcmu_release_usb_wakeup_state - release the state required by a USB wakeup
+ *
+ * This function releases the power state requirements of a USB wakeup.
+ */
+int prcmu_release_usb_wakeup_state(void)
+{
+ int r = 0;
+
+ mutex_lock(&mb1_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1))
+ cpu_relax();
+
+ writeb(MB1H_RELEASE_USB_WAKEUP,
+ (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1));
+
+ writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb1_transfer.work);
+
+ if ((mb1_transfer.ack.header != MB1H_RELEASE_USB_WAKEUP) ||
+ ((mb1_transfer.ack.ape_voltage_status & BIT(0)) != 0))
+ r = -EIO;
+
+ mutex_unlock(&mb1_transfer.lock);
+
+ return r;
+}
+
+/**
+ * prcmu_set_epod - set the state of a EPOD (power domain)
+ * @epod_id: The EPOD to set
+ * @epod_state: The new EPOD state
+ *
+ * This function sets the state of a EPOD (power domain). It may not be called
+ * from interrupt context.
+ */
+int prcmu_set_epod(u16 epod_id, u8 epod_state)
+{
+ int r = 0;
+ bool ram_retention = false;
+ int i;
+
+ /* check argument */
+ BUG_ON(epod_id >= NUM_EPOD_ID);
+
+ /* set flag if retention is possible */
+ switch (epod_id) {
+ case EPOD_ID_SVAMMDSP:
+ case EPOD_ID_SIAMMDSP:
+ case EPOD_ID_ESRAM12:
+ case EPOD_ID_ESRAM34:
+ ram_retention = true;
+ break;
+ }
+
+ /* check argument */
+ BUG_ON(epod_state > EPOD_STATE_ON);
+ BUG_ON(epod_state == EPOD_STATE_RAMRET && !ram_retention);
+
+ /* get lock */
+ mutex_lock(&mb2_transfer.lock);
+
+ /* wait for mailbox */
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(2))
+ cpu_relax();
+
+ /* fill in mailbox */
+ for (i = 0; i < NUM_EPOD_ID; i++)
+ writeb(EPOD_STATE_NO_CHANGE, (tcdm_base + PRCM_REQ_MB2 + i));
+ writeb(epod_state, (tcdm_base + PRCM_REQ_MB2 + epod_id));
+
+ writeb(MB2H_DPS, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB2));
+
+ writel(MBOX_BIT(2), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+
+ /*
+ * The current firmware version does not handle errors correctly,
+ * and we cannot recover if there is an error.
+ * This is expected to change when the firmware is updated.
+ */
+ if (!wait_for_completion_timeout(&mb2_transfer.work,
+ msecs_to_jiffies(20000))) {
+ pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n",
+ __func__);
+ r = -EIO;
+ goto unlock_and_return;
+ }
+
+ if (mb2_transfer.ack.status != HWACC_PWR_ST_OK)
+ r = -EIO;
+
+unlock_and_return:
+ mutex_unlock(&mb2_transfer.lock);
+ return r;
+}
+
+/**
+ * prcmu_configure_auto_pm - Configure autonomous power management.
+ * @sleep: Configuration for ApSleep.
+ * @idle: Configuration for ApIdle.
+ */
+void prcmu_configure_auto_pm(struct prcmu_auto_pm_config *sleep,
+ struct prcmu_auto_pm_config *idle)
+{
+ u32 sleep_cfg;
+ u32 idle_cfg;
+ unsigned long flags;
+
+ BUG_ON((sleep == NULL) || (idle == NULL));
+
+ sleep_cfg = (sleep->sva_auto_pm_enable & 0xF);
+ sleep_cfg = ((sleep_cfg << 4) | (sleep->sia_auto_pm_enable & 0xF));
+ sleep_cfg = ((sleep_cfg << 8) | (sleep->sva_power_on & 0xFF));
+ sleep_cfg = ((sleep_cfg << 8) | (sleep->sia_power_on & 0xFF));
+ sleep_cfg = ((sleep_cfg << 4) | (sleep->sva_policy & 0xF));
+ sleep_cfg = ((sleep_cfg << 4) | (sleep->sia_policy & 0xF));
+
+ idle_cfg = (idle->sva_auto_pm_enable & 0xF);
+ idle_cfg = ((idle_cfg << 4) | (idle->sia_auto_pm_enable & 0xF));
+ idle_cfg = ((idle_cfg << 8) | (idle->sva_power_on & 0xFF));
+ idle_cfg = ((idle_cfg << 8) | (idle->sia_power_on & 0xFF));
+ idle_cfg = ((idle_cfg << 4) | (idle->sva_policy & 0xF));
+ idle_cfg = ((idle_cfg << 4) | (idle->sia_policy & 0xF));
+
+ spin_lock_irqsave(&mb2_transfer.auto_pm_lock, flags);
+
+ /*
+ * The autonomous power management configuration is done through
+ * fields in mailbox 2, but these fields are only used as shared
+ * variables - i.e. there is no need to send a message.
+ */
+ writel(sleep_cfg, (tcdm_base + PRCM_REQ_MB2_AUTO_PM_SLEEP));
+ writel(idle_cfg, (tcdm_base + PRCM_REQ_MB2_AUTO_PM_IDLE));
+
+ mb2_transfer.auto_pm_enabled =
+ ((sleep->sva_auto_pm_enable == PRCMU_AUTO_PM_ON) ||
+ (sleep->sia_auto_pm_enable == PRCMU_AUTO_PM_ON) ||
+ (idle->sva_auto_pm_enable == PRCMU_AUTO_PM_ON) ||
+ (idle->sia_auto_pm_enable == PRCMU_AUTO_PM_ON));
+
+ spin_unlock_irqrestore(&mb2_transfer.auto_pm_lock, flags);
+}
+EXPORT_SYMBOL(prcmu_configure_auto_pm);
+
+bool prcmu_is_auto_pm_enabled(void)
+{
+ return mb2_transfer.auto_pm_enabled;
+}
+
+static int request_sysclk(bool enable)
+{
+ int r;
+ unsigned long flags;
+
+ r = 0;
+
+ mutex_lock(&mb3_transfer.sysclk_lock);
+
+ spin_lock_irqsave(&mb3_transfer.lock, flags);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(3))
+ cpu_relax();
+
+ writeb((enable ? ON : OFF), (tcdm_base + PRCM_REQ_MB3_SYSCLK_MGT));
+
+ writeb(MB3H_SYSCLK, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB3));
+ writel(MBOX_BIT(3), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+
+ spin_unlock_irqrestore(&mb3_transfer.lock, flags);
+
+ /*
+ * The firmware only sends an ACK if we want to enable the
+ * SysClk, and it succeeds.
+ */
+ if (enable && !wait_for_completion_timeout(&mb3_transfer.sysclk_work,
+ msecs_to_jiffies(20000))) {
+ pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n",
+ __func__);
+ r = -EIO;
+ }
+
+ mutex_unlock(&mb3_transfer.sysclk_lock);
+
+ return r;
+}
+
+static int request_timclk(bool enable)
+{
+ u32 val = (PRCM_TCR_DOZE_MODE | PRCM_TCR_TENSEL_MASK);
+
+ if (!enable)
+ val |= PRCM_TCR_STOP_TIMERS;
+ writel(val, (_PRCMU_BASE + PRCM_TCR));
+
+ return 0;
+}
+
+static int request_reg_clock(u8 clock, bool enable)
+{
+ u32 val;
+ unsigned long flags;
+
+ spin_lock_irqsave(&clk_mgt_lock, flags);
+
+ /* Grab the HW semaphore. */
+ while ((readl(_PRCMU_BASE + PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0)
+ cpu_relax();
+
+ val = readl(_PRCMU_BASE + clk_mgt[clock].offset);
+ if (enable) {
+ val |= (PRCM_CLK_MGT_CLKEN | clk_mgt[clock].pllsw);
+ } else {
+ clk_mgt[clock].pllsw = (val & PRCM_CLK_MGT_CLKPLLSW_MASK);
+ val &= ~(PRCM_CLK_MGT_CLKEN | PRCM_CLK_MGT_CLKPLLSW_MASK);
+ }
+ writel(val, (_PRCMU_BASE + clk_mgt[clock].offset));
+
+ /* Release the HW semaphore. */
+ writel(0, (_PRCMU_BASE + PRCM_SEM));
+
+ spin_unlock_irqrestore(&clk_mgt_lock, flags);
+
+ return 0;
+}
+
+/**
+ * prcmu_request_clock() - Request for a clock to be enabled or disabled.
+ * @clock: The clock for which the request is made.
+ * @enable: Whether the clock should be enabled (true) or disabled (false).
+ *
+ * This function should only be used by the clock implementation.
+ * Do not use it from any other place!
+ */
+int prcmu_request_clock(u8 clock, bool enable)
+{
+ if (clock < PRCMU_NUM_REG_CLOCKS)
+ return request_reg_clock(clock, enable);
+ else if (clock == PRCMU_TIMCLK)
+ return request_timclk(enable);
+ else if (clock == PRCMU_SYSCLK)
+ return request_sysclk(enable);
+ else
+ return -EINVAL;
+}
+
+int prcmu_config_esram0_deep_sleep(u8 state)
+{
+ if ((state > ESRAM0_DEEP_SLEEP_STATE_RET) ||
+ (state < ESRAM0_DEEP_SLEEP_STATE_OFF))
+ return -EINVAL;
+
+ mutex_lock(&mb4_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(4))
+ cpu_relax();
+
+ writeb(MB4H_MEM_ST, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4));
+ writeb(((DDR_PWR_STATE_OFFHIGHLAT << 4) | DDR_PWR_STATE_ON),
+ (tcdm_base + PRCM_REQ_MB4_DDR_ST_AP_SLEEP_IDLE));
+ writeb(DDR_PWR_STATE_ON,
+ (tcdm_base + PRCM_REQ_MB4_DDR_ST_AP_DEEP_IDLE));
+ writeb(state, (tcdm_base + PRCM_REQ_MB4_ESRAM0_ST));
+
+ writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb4_transfer.work);
+
+ mutex_unlock(&mb4_transfer.lock);
+
+ return 0;
+}
+
+int prcmu_config_hotdog(u8 threshold)
+{
+ mutex_lock(&mb4_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(4))
+ cpu_relax();
+
+ writeb(threshold, (tcdm_base + PRCM_REQ_MB4_HOTDOG_THRESHOLD));
+ writeb(MB4H_HOTDOG, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4));
+
+ writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb4_transfer.work);
+
+ mutex_unlock(&mb4_transfer.lock);
+
+ return 0;
+}
+
+int prcmu_config_hotmon(u8 low, u8 high)
+{
+ mutex_lock(&mb4_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(4))
+ cpu_relax();
+
+ writeb(low, (tcdm_base + PRCM_REQ_MB4_HOTMON_LOW));
+ writeb(high, (tcdm_base + PRCM_REQ_MB4_HOTMON_HIGH));
+ writeb((HOTMON_CONFIG_LOW | HOTMON_CONFIG_HIGH),
+ (tcdm_base + PRCM_REQ_MB4_HOTMON_CONFIG));
+ writeb(MB4H_HOTMON, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4));
+
+ writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb4_transfer.work);
+
+ mutex_unlock(&mb4_transfer.lock);
+
+ return 0;
+}
+
+static int config_hot_period(u16 val)
+{
+ mutex_lock(&mb4_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(4))
+ cpu_relax();
+
+ writew(val, (tcdm_base + PRCM_REQ_MB4_HOT_PERIOD));
+ writeb(MB4H_HOT_PERIOD, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4));
+
+ writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb4_transfer.work);
+
+ mutex_unlock(&mb4_transfer.lock);
+
+ return 0;
+}
+
+int prcmu_start_temp_sense(u16 cycles32k)
+{
+ if (cycles32k == 0xFFFF)
+ return -EINVAL;
+
+ return config_hot_period(cycles32k);
+}
+
+int prcmu_stop_temp_sense(void)
+{
+ return config_hot_period(0xFFFF);
+}
+
+/**
+ * prcmu_set_clock_divider() - Configure the clock divider.
+ * @clock: The clock for which the request is made.
+ * @divider: The clock divider. (< 32)
+ *
+ * This function should only be used by the clock implementation.
+ * Do not use it from any other place!
+ */
+int prcmu_set_clock_divider(u8 clock, u8 divider)
+{
+ u32 val;
+ unsigned long flags;
+
+ if ((clock >= PRCMU_NUM_REG_CLOCKS) || (divider < 1) || (31 < divider))
+ return -EINVAL;
+
+ spin_lock_irqsave(&clk_mgt_lock, flags);
+
+ /* Grab the HW semaphore. */
+ while ((readl(_PRCMU_BASE + PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0)
+ cpu_relax();
+
+ val = readl(_PRCMU_BASE + clk_mgt[clock].offset);
+ val &= ~(PRCM_CLK_MGT_CLKPLLDIV_MASK);
+ val |= (u32)divider;
+ writel(val, (_PRCMU_BASE + clk_mgt[clock].offset));
+
+ /* Release the HW semaphore. */
+ writel(0, (_PRCMU_BASE + PRCM_SEM));
+
+ spin_unlock_irqrestore(&clk_mgt_lock, flags);
+
+ return 0;
+}
+
+/**
+ * prcmu_abb_read() - Read register value(s) from the ABB.
+ * @slave: The I2C slave address.
+ * @reg: The (start) register address.
+ * @value: The read out value(s).
+ * @size: The number of registers to read.
+ *
+ * Reads register value(s) from the ABB.
+ * @size has to be 1 for the current firmware version.
+ */
+int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size)
+{
+ int r;
+
+ if (size != 1)
+ return -EINVAL;
+
+ mutex_lock(&mb5_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(5))
+ cpu_relax();
+
+ writeb(PRCMU_I2C_READ(slave), (tcdm_base + PRCM_REQ_MB5_I2C_SLAVE_OP));
+ writeb(PRCMU_I2C_STOP_EN, (tcdm_base + PRCM_REQ_MB5_I2C_HW_BITS));
+ writeb(reg, (tcdm_base + PRCM_REQ_MB5_I2C_REG));
+ writeb(0, (tcdm_base + PRCM_REQ_MB5_I2C_VAL));
+
+ writel(MBOX_BIT(5), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+
+ if (!wait_for_completion_timeout(&mb5_transfer.work,
+ msecs_to_jiffies(20000))) {
+ pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n",
+ __func__);
+ r = -EIO;
+ } else {
+ r = ((mb5_transfer.ack.status == I2C_RD_OK) ? 0 : -EIO);
+ }
+
+ if (!r)
+ *value = mb5_transfer.ack.value;
+
+ mutex_unlock(&mb5_transfer.lock);
+
+ return r;
+}
+
+/**
+ * prcmu_abb_write() - Write register value(s) to the ABB.
+ * @slave: The I2C slave address.
+ * @reg: The (start) register address.
+ * @value: The value(s) to write.
+ * @size: The number of registers to write.
+ *
+ * Reads register value(s) from the ABB.
+ * @size has to be 1 for the current firmware version.
+ */
+int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size)
+{
+ int r;
+
+ if (size != 1)
+ return -EINVAL;
+
+ mutex_lock(&mb5_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(5))
+ cpu_relax();
+
+ writeb(PRCMU_I2C_WRITE(slave), (tcdm_base + PRCM_REQ_MB5_I2C_SLAVE_OP));
+ writeb(PRCMU_I2C_STOP_EN, (tcdm_base + PRCM_REQ_MB5_I2C_HW_BITS));
+ writeb(reg, (tcdm_base + PRCM_REQ_MB5_I2C_REG));
+ writeb(*value, (tcdm_base + PRCM_REQ_MB5_I2C_VAL));
+
+ writel(MBOX_BIT(5), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+
+ if (!wait_for_completion_timeout(&mb5_transfer.work,
+ msecs_to_jiffies(20000))) {
+ pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n",
+ __func__);
+ r = -EIO;
+ } else {
+ r = ((mb5_transfer.ack.status == I2C_WR_OK) ? 0 : -EIO);
+ }
+
+ mutex_unlock(&mb5_transfer.lock);
+
+ return r;
+}
+
+/**
+ * prcmu_ac_wake_req - should be called whenever ARM wants to wakeup Modem
+ */
+void prcmu_ac_wake_req(void)
+{
+ u32 val;
+
+ mutex_lock(&mb0_transfer.ac_wake_lock);
+
+ val = readl(_PRCMU_BASE + PRCM_HOSTACCESS_REQ);
+ if (val & PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ)
+ goto unlock_and_return;
+
+ atomic_set(&ac_wake_req_state, 1);
+
+ writel((val | PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ),
+ (_PRCMU_BASE + PRCM_HOSTACCESS_REQ));
+
+ if (!wait_for_completion_timeout(&mb0_transfer.ac_wake_work,
+ msecs_to_jiffies(20000))) {
+ pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n",
+ __func__);
+ }
+
+unlock_and_return:
+ mutex_unlock(&mb0_transfer.ac_wake_lock);
+}
+
+/**
+ * prcmu_ac_sleep_req - called when ARM no longer needs to talk to modem
+ */
+void prcmu_ac_sleep_req()
+{
+ u32 val;
+
+ mutex_lock(&mb0_transfer.ac_wake_lock);
+
+ val = readl(_PRCMU_BASE + PRCM_HOSTACCESS_REQ);
+ if (!(val & PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ))
+ goto unlock_and_return;
+
+ writel((val & ~PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ),
+ (_PRCMU_BASE + PRCM_HOSTACCESS_REQ));
+
+ if (!wait_for_completion_timeout(&mb0_transfer.ac_wake_work,
+ msecs_to_jiffies(20000))) {
+ pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n",
+ __func__);
+ }
+
+ atomic_set(&ac_wake_req_state, 0);
+
+unlock_and_return:
+ mutex_unlock(&mb0_transfer.ac_wake_lock);
+}
+
+bool prcmu_is_ac_wake_requested(void)
+{
+ return (atomic_read(&ac_wake_req_state) != 0);
+}
+
+/**
+ * prcmu_system_reset - System reset
+ *
+ * Saves the reset reason code and then sets the APE_SOFRST register which
+ * fires interrupt to fw
+ */
+void prcmu_system_reset(u16 reset_code)
+{
+ writew(reset_code, (tcdm_base + PRCM_SW_RST_REASON));
+ writel(1, (_PRCMU_BASE + PRCM_APE_SOFTRST));
+}
+
+/**
+ * prcmu_reset_modem - ask the PRCMU to reset modem
+ */
+void prcmu_modem_reset(void)
+{
+ mutex_lock(&mb1_transfer.lock);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1))
+ cpu_relax();
+
+ writeb(MB1H_RESET_MODEM, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1));
+ writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+ wait_for_completion(&mb1_transfer.work);
+
+ /*
+ * No need to check return from PRCMU as modem should go in reset state
+ * This state is already managed by upper layer
+ */
+
+ mutex_unlock(&mb1_transfer.lock);
+}
+
+static void ack_dbb_wakeup(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mb0_transfer.lock, flags);
+
+ while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(0))
+ cpu_relax();
+
+ writeb(MB0H_READ_WAKEUP_ACK, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0));
+ writel(MBOX_BIT(0), (_PRCMU_BASE + PRCM_MBOX_CPU_SET));
+
+ spin_unlock_irqrestore(&mb0_transfer.lock, flags);
+}
+
+static inline void print_unknown_header_warning(u8 n, u8 header)
+{
+ pr_warning("prcmu: Unknown message header (%d) in mailbox %d.\n",
+ header, n);
+}
+
+static bool read_mailbox_0(void)
+{
+ bool r;
+ u32 ev;
+ unsigned int n;
+ u8 header;
+
+ header = readb(tcdm_base + PRCM_MBOX_HEADER_ACK_MB0);
+ switch (header) {
+ case MB0H_WAKEUP_EXE:
+ case MB0H_WAKEUP_SLEEP:
+ if (readb(tcdm_base + PRCM_ACK_MB0_READ_POINTER) & 1)
+ ev = readl(tcdm_base + PRCM_ACK_MB0_WAKEUP_1_8500);
+ else
+ ev = readl(tcdm_base + PRCM_ACK_MB0_WAKEUP_0_8500);
+
+ if (ev & (WAKEUP_BIT_AC_WAKE_ACK | WAKEUP_BIT_AC_SLEEP_ACK))
+ complete(&mb0_transfer.ac_wake_work);
+ if (ev & WAKEUP_BIT_SYSCLK_OK)
+ complete(&mb3_transfer.sysclk_work);
+
+ ev &= mb0_transfer.req.dbb_irqs;
+
+ for (n = 0; n < NUM_PRCMU_WAKEUPS; n++) {
+ if (ev & prcmu_irq_bit[n])
+ generic_handle_irq(IRQ_PRCMU_BASE + n);
+ }
+ r = true;
+ break;
+ default:
+ print_unknown_header_warning(0, header);
+ r = false;
+ break;
+ }
+ writel(MBOX_BIT(0), (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+ return r;
+}
+
+static bool read_mailbox_1(void)
+{
+ mb1_transfer.ack.header = readb(tcdm_base + PRCM_MBOX_HEADER_REQ_MB1);
+ mb1_transfer.ack.arm_opp = readb(tcdm_base +
+ PRCM_ACK_MB1_CURRENT_ARM_OPP);
+ mb1_transfer.ack.ape_opp = readb(tcdm_base +
+ PRCM_ACK_MB1_CURRENT_APE_OPP);
+ mb1_transfer.ack.ape_voltage_status = readb(tcdm_base +
+ PRCM_ACK_MB1_APE_VOLTAGE_STATUS);
+ writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+ complete(&mb1_transfer.work);
+ return false;
+}
+
+static bool read_mailbox_2(void)
+{
+ mb2_transfer.ack.status = readb(tcdm_base + PRCM_ACK_MB2_DPS_STATUS);
+ writel(MBOX_BIT(2), (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+ complete(&mb2_transfer.work);
+ return false;
+}
+
+static bool read_mailbox_3(void)
+{
+ writel(MBOX_BIT(3), (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+ return false;
+}
+
+static bool read_mailbox_4(void)
+{
+ u8 header;
+ bool do_complete = true;
+
+ header = readb(tcdm_base + PRCM_MBOX_HEADER_REQ_MB4);
+ switch (header) {
+ case MB4H_MEM_ST:
+ case MB4H_HOTDOG:
+ case MB4H_HOTMON:
+ case MB4H_HOT_PERIOD:
+ break;
+ default:
+ print_unknown_header_warning(4, header);
+ do_complete = false;
+ break;
+ }
+
+ writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+
+ if (do_complete)
+ complete(&mb4_transfer.work);
+
+ return false;
+}
+
+static bool read_mailbox_5(void)
+{
+ mb5_transfer.ack.status = readb(tcdm_base + PRCM_ACK_MB5_I2C_STATUS);
+ mb5_transfer.ack.value = readb(tcdm_base + PRCM_ACK_MB5_I2C_VAL);
+ writel(MBOX_BIT(5), (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+ complete(&mb5_transfer.work);
+ return false;
+}
+
+static bool read_mailbox_6(void)
+{
+ writel(MBOX_BIT(6), (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+ return false;
+}
+
+static bool read_mailbox_7(void)
+{
+ writel(MBOX_BIT(7), (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+ return false;
+}
+
+static bool (* const read_mailbox[NUM_MB])(void) = {
+ read_mailbox_0,
+ read_mailbox_1,
+ read_mailbox_2,
+ read_mailbox_3,
+ read_mailbox_4,
+ read_mailbox_5,
+ read_mailbox_6,
+ read_mailbox_7
+};
+
+static irqreturn_t prcmu_irq_handler(int irq, void *data)
+{
+ u32 bits;
+ u8 n;
+ irqreturn_t r;
+
+ bits = (readl(_PRCMU_BASE + PRCM_ARM_IT1_VAL) & ALL_MBOX_BITS);
+ if (unlikely(!bits))
+ return IRQ_NONE;
+
+ r = IRQ_HANDLED;
+ for (n = 0; bits; n++) {
+ if (bits & MBOX_BIT(n)) {
+ bits -= MBOX_BIT(n);
+ if (read_mailbox[n]())
+ r = IRQ_WAKE_THREAD;
+ }
+ }
+ return r;
+}
+
+static irqreturn_t prcmu_irq_thread_fn(int irq, void *data)
+{
+ ack_dbb_wakeup();
+ return IRQ_HANDLED;
+}
+
+static void prcmu_mask_work(struct work_struct *work)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mb0_transfer.lock, flags);
+
+ config_wakeups();
+
+ spin_unlock_irqrestore(&mb0_transfer.lock, flags);
+}
+
+static void prcmu_irq_mask(struct irq_data *d)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mb0_transfer.dbb_irqs_lock, flags);
+
+ mb0_transfer.req.dbb_irqs &= ~prcmu_irq_bit[d->irq - IRQ_PRCMU_BASE];
+
+ spin_unlock_irqrestore(&mb0_transfer.dbb_irqs_lock, flags);
+
+ if (d->irq != IRQ_PRCMU_CA_SLEEP)
+ schedule_work(&mb0_transfer.mask_work);
+}
+
+static void prcmu_irq_unmask(struct irq_data *d)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mb0_transfer.dbb_irqs_lock, flags);
+
+ mb0_transfer.req.dbb_irqs |= prcmu_irq_bit[d->irq - IRQ_PRCMU_BASE];
+
+ spin_unlock_irqrestore(&mb0_transfer.dbb_irqs_lock, flags);
+
+ if (d->irq != IRQ_PRCMU_CA_SLEEP)
+ schedule_work(&mb0_transfer.mask_work);
+}
+
+static void noop(struct irq_data *d)
+{
+}
+
+static struct irq_chip prcmu_irq_chip = {
+ .name = "prcmu",
+ .irq_disable = prcmu_irq_mask,
+ .irq_ack = noop,
+ .irq_mask = prcmu_irq_mask,
+ .irq_unmask = prcmu_irq_unmask,
+};
+
+void __init prcmu_early_init(void)
+{
+ unsigned int i;
+
+ if (cpu_is_u8500v1()) {
+ tcdm_base = __io_address(U8500_PRCMU_TCDM_BASE_V1);
+ } else if (cpu_is_u8500v2()) {
+ void *tcpm_base = ioremap_nocache(U8500_PRCMU_TCPM_BASE, SZ_4K);
+
+ if (tcpm_base != NULL) {
+ int version;
+ version = readl(tcpm_base + PRCMU_FW_VERSION_OFFSET);
+ prcmu_version.project_number = version & 0xFF;
+ prcmu_version.api_version = (version >> 8) & 0xFF;
+ prcmu_version.func_version = (version >> 16) & 0xFF;
+ prcmu_version.errata = (version >> 24) & 0xFF;
+ pr_info("PRCMU firmware version %d.%d.%d\n",
+ (version >> 8) & 0xFF, (version >> 16) & 0xFF,
+ (version >> 24) & 0xFF);
+ iounmap(tcpm_base);
+ }
+
+ tcdm_base = __io_address(U8500_PRCMU_TCDM_BASE);
+ } else {
+ pr_err("prcmu: Unsupported chip version\n");
+ BUG();
+ }
+
+ spin_lock_init(&mb0_transfer.lock);
+ spin_lock_init(&mb0_transfer.dbb_irqs_lock);
+ mutex_init(&mb0_transfer.ac_wake_lock);
+ init_completion(&mb0_transfer.ac_wake_work);
+ mutex_init(&mb1_transfer.lock);
+ init_completion(&mb1_transfer.work);
+ mutex_init(&mb2_transfer.lock);
+ init_completion(&mb2_transfer.work);
+ spin_lock_init(&mb2_transfer.auto_pm_lock);
+ spin_lock_init(&mb3_transfer.lock);
+ mutex_init(&mb3_transfer.sysclk_lock);
+ init_completion(&mb3_transfer.sysclk_work);
+ mutex_init(&mb4_transfer.lock);
+ init_completion(&mb4_transfer.work);
+ mutex_init(&mb5_transfer.lock);
+ init_completion(&mb5_transfer.work);
+
+ INIT_WORK(&mb0_transfer.mask_work, prcmu_mask_work);
+
+ /* Initalize irqs. */
+ for (i = 0; i < NUM_PRCMU_WAKEUPS; i++) {
+ unsigned int irq;
+
+ irq = IRQ_PRCMU_BASE + i;
+ irq_set_chip_and_handler(irq, &prcmu_irq_chip,
+ handle_simple_irq);
+ set_irq_flags(irq, IRQF_VALID);
+ }
+}
+
+/*
+ * Power domain switches (ePODs) modeled as regulators for the DB8500 SoC
+ */
+static struct regulator_consumer_supply db8500_vape_consumers[] = {
+ REGULATOR_SUPPLY("v-ape", NULL),
+ REGULATOR_SUPPLY("v-i2c", "nmk-i2c.0"),
+ REGULATOR_SUPPLY("v-i2c", "nmk-i2c.1"),
+ REGULATOR_SUPPLY("v-i2c", "nmk-i2c.2"),
+ REGULATOR_SUPPLY("v-i2c", "nmk-i2c.3"),
+ /* "v-mmc" changed to "vcore" in the mainline kernel */
+ REGULATOR_SUPPLY("vcore", "sdi0"),
+ REGULATOR_SUPPLY("vcore", "sdi1"),
+ REGULATOR_SUPPLY("vcore", "sdi2"),
+ REGULATOR_SUPPLY("vcore", "sdi3"),
+ REGULATOR_SUPPLY("vcore", "sdi4"),
+ REGULATOR_SUPPLY("v-dma", "dma40.0"),
+ REGULATOR_SUPPLY("v-ape", "ab8500-usb.0"),
+ /* "v-uart" changed to "vcore" in the mainline kernel */
+ REGULATOR_SUPPLY("vcore", "uart0"),
+ REGULATOR_SUPPLY("vcore", "uart1"),
+ REGULATOR_SUPPLY("vcore", "uart2"),
+ REGULATOR_SUPPLY("v-ape", "nmk-ske-keypad.0"),
+};
+
+static struct regulator_consumer_supply db8500_vsmps2_consumers[] = {
+ /* CG2900 and CW1200 power to off-chip peripherals */
+ REGULATOR_SUPPLY("gbf_1v8", "cg2900-uart.0"),
+ REGULATOR_SUPPLY("wlan_1v8", "cw1200.0"),
+ REGULATOR_SUPPLY("musb_1v8", "ab8500-usb.0"),
+ /* AV8100 regulator */
+ REGULATOR_SUPPLY("hdmi_1v8", "0-0070"),
+};
+
+static struct regulator_consumer_supply db8500_b2r2_mcde_consumers[] = {
+ REGULATOR_SUPPLY("vsupply", "b2r2.0"),
+ REGULATOR_SUPPLY("vsupply", "mcde.0"),
+};
+
+static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = {
+ [DB8500_REGULATOR_VAPE] = {
+ .constraints = {
+ .name = "db8500-vape",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .consumer_supplies = db8500_vape_consumers,
+ .num_consumer_supplies = ARRAY_SIZE(db8500_vape_consumers),
+ },
+ [DB8500_REGULATOR_VARM] = {
+ .constraints = {
+ .name = "db8500-varm",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_VMODEM] = {
+ .constraints = {
+ .name = "db8500-vmodem",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_VPLL] = {
+ .constraints = {
+ .name = "db8500-vpll",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_VSMPS1] = {
+ .constraints = {
+ .name = "db8500-vsmps1",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_VSMPS2] = {
+ .constraints = {
+ .name = "db8500-vsmps2",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .consumer_supplies = db8500_vsmps2_consumers,
+ .num_consumer_supplies = ARRAY_SIZE(db8500_vsmps2_consumers),
+ },
+ [DB8500_REGULATOR_VSMPS3] = {
+ .constraints = {
+ .name = "db8500-vsmps3",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_VRF1] = {
+ .constraints = {
+ .name = "db8500-vrf1",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_SVAMMDSP] = {
+ .supply_regulator = "db8500-vape",
+ .constraints = {
+ .name = "db8500-sva-mmdsp",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_SVAMMDSPRET] = {
+ .constraints = {
+ /* "ret" means "retention" */
+ .name = "db8500-sva-mmdsp-ret",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_SVAPIPE] = {
+ .supply_regulator = "db8500-vape",
+ .constraints = {
+ .name = "db8500-sva-pipe",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_SIAMMDSP] = {
+ .supply_regulator = "db8500-vape",
+ .constraints = {
+ .name = "db8500-sia-mmdsp",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_SIAMMDSPRET] = {
+ .constraints = {
+ .name = "db8500-sia-mmdsp-ret",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_SIAPIPE] = {
+ .supply_regulator = "db8500-vape",
+ .constraints = {
+ .name = "db8500-sia-pipe",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_SGA] = {
+ .supply_regulator = "db8500-vape",
+ .constraints = {
+ .name = "db8500-sga",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_B2R2_MCDE] = {
+ .supply_regulator = "db8500-vape",
+ .constraints = {
+ .name = "db8500-b2r2-mcde",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .consumer_supplies = db8500_b2r2_mcde_consumers,
+ .num_consumer_supplies = ARRAY_SIZE(db8500_b2r2_mcde_consumers),
+ },
+ [DB8500_REGULATOR_SWITCH_ESRAM12] = {
+ .supply_regulator = "db8500-vape",
+ .constraints = {
+ .name = "db8500-esram12",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_ESRAM12RET] = {
+ .constraints = {
+ .name = "db8500-esram12-ret",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_ESRAM34] = {
+ .supply_regulator = "db8500-vape",
+ .constraints = {
+ .name = "db8500-esram34",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_ESRAM34RET] = {
+ .constraints = {
+ .name = "db8500-esram34-ret",
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ },
+};
+
+static struct mfd_cell db8500_prcmu_devs[] = {
+ {
+ .name = "db8500-prcmu-regulators",
+ .mfd_data = &db8500_regulators,
+ },
+ {
+ .name = "cpufreq-u8500",
+ },
+};
+
+/**
+ * prcmu_fw_init - arch init call for the Linux PRCMU fw init logic
+ *
+ */
+static int __init db8500_prcmu_probe(struct platform_device *pdev)
+{
+ int err = 0;
+
+ if (ux500_is_svp())
+ return -ENODEV;
+
+ /* Clean up the mailbox interrupts after pre-kernel code. */
+ writel(ALL_MBOX_BITS, (_PRCMU_BASE + PRCM_ARM_IT1_CLR));
+
+ err = request_threaded_irq(IRQ_DB8500_PRCMU1, prcmu_irq_handler,
+ prcmu_irq_thread_fn, IRQF_NO_SUSPEND, "prcmu", NULL);
+ if (err < 0) {
+ pr_err("prcmu: Failed to allocate IRQ_DB8500_PRCMU1.\n");
+ err = -EBUSY;
+ goto no_irq_return;
+ }
+
+ if (cpu_is_u8500v20_or_later())
+ prcmu_config_esram0_deep_sleep(ESRAM0_DEEP_SLEEP_STATE_RET);
+
+ err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs,
+ ARRAY_SIZE(db8500_prcmu_devs), NULL,
+ 0);
+
+ if (err)
+ pr_err("prcmu: Failed to add subdevices\n");
+ else
+ pr_info("DB8500 PRCMU initialized\n");
+
+no_irq_return:
+ return err;
+}
+
+static struct platform_driver db8500_prcmu_driver = {
+ .driver = {
+ .name = "db8500-prcmu",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init db8500_prcmu_init(void)
+{
+ return platform_driver_probe(&db8500_prcmu_driver, db8500_prcmu_probe);
+}
+
+arch_initcall(db8500_prcmu_init);
+
+MODULE_AUTHOR("Mattias Nilsson <mattias.i.nilsson@stericsson.com>");
+MODULE_DESCRIPTION("DB8500 PRCM Unit driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index b9f29e0d4295..f0b13a0d1851 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -274,6 +274,13 @@ config REGULATOR_AB8500
This driver supports the regulators found on the ST-Ericsson mixed
signal AB8500 PMIC
+config REGULATOR_DB8500_PRCMU
+ bool "ST-Ericsson DB8500 Voltage Domain Regulators"
+ depends on MFD_DB8500_PRCMU
+ help
+ This driver supports the voltage domain regulators controlled by the
+ DB8500 PRCMU
+
config REGULATOR_TPS6586X
tristate "TI TPS6586X Power regulators"
depends on MFD_TPS6586X
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index d72a42756778..165ff5371e9e 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -41,5 +41,6 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o
obj-$(CONFIG_REGULATOR_AB8500) += ab8500.o
+obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
diff --git a/drivers/regulator/db8500-prcmu.c b/drivers/regulator/db8500-prcmu.c
new file mode 100644
index 000000000000..1089a961616e
--- /dev/null
+++ b/drivers/regulator/db8500-prcmu.c
@@ -0,0 +1,558 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
+ * Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
+ *
+ * Power domain regulators on DB8500
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/db8500-prcmu.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/db8500-prcmu.h>
+
+/*
+ * power state reference count
+ */
+static int power_state_active_cnt; /* will initialize to zero */
+static DEFINE_SPINLOCK(power_state_active_lock);
+
+static void power_state_active_enable(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&power_state_active_lock, flags);
+ power_state_active_cnt++;
+ spin_unlock_irqrestore(&power_state_active_lock, flags);
+}
+
+static int power_state_active_disable(void)
+{
+ int ret = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&power_state_active_lock, flags);
+ if (power_state_active_cnt <= 0) {
+ pr_err("power state: unbalanced enable/disable calls\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ power_state_active_cnt--;
+out:
+ spin_unlock_irqrestore(&power_state_active_lock, flags);
+ return ret;
+}
+
+/*
+ * Exported interface for CPUIdle only. This function is called when interrupts
+ * are turned off. Hence, no locking.
+ */
+int power_state_active_is_enabled(void)
+{
+ return (power_state_active_cnt > 0);
+}
+
+/**
+ * struct db8500_regulator_info - db8500 regulator information
+ * @dev: device pointer
+ * @desc: regulator description
+ * @rdev: regulator device pointer
+ * @is_enabled: status of the regulator
+ * @epod_id: id for EPOD (power domain)
+ * @is_ramret: RAM retention switch for EPOD (power domain)
+ * @operating_point: operating point (only for vape, to be removed)
+ *
+ */
+struct db8500_regulator_info {
+ struct device *dev;
+ struct regulator_desc desc;
+ struct regulator_dev *rdev;
+ bool is_enabled;
+ u16 epod_id;
+ bool is_ramret;
+ bool exclude_from_power_state;
+ unsigned int operating_point;
+};
+
+static int db8500_regulator_enable(struct regulator_dev *rdev)
+{
+ struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+
+ if (info == NULL)
+ return -EINVAL;
+
+ dev_vdbg(rdev_get_dev(rdev), "regulator-%s-enable\n",
+ info->desc.name);
+
+ info->is_enabled = true;
+ if (!info->exclude_from_power_state)
+ power_state_active_enable();
+
+ return 0;
+}
+
+static int db8500_regulator_disable(struct regulator_dev *rdev)
+{
+ struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ int ret = 0;
+
+ if (info == NULL)
+ return -EINVAL;
+
+ dev_vdbg(rdev_get_dev(rdev), "regulator-%s-disable\n",
+ info->desc.name);
+
+ info->is_enabled = false;
+ if (!info->exclude_from_power_state)
+ ret = power_state_active_disable();
+
+ return ret;
+}
+
+static int db8500_regulator_is_enabled(struct regulator_dev *rdev)
+{
+ struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+
+ if (info == NULL)
+ return -EINVAL;
+
+ dev_vdbg(rdev_get_dev(rdev), "regulator-%s-is_enabled (is_enabled):"
+ " %i\n", info->desc.name, info->is_enabled);
+
+ return info->is_enabled;
+}
+
+/* db8500 regulator operations */
+static struct regulator_ops db8500_regulator_ops = {
+ .enable = db8500_regulator_enable,
+ .disable = db8500_regulator_disable,
+ .is_enabled = db8500_regulator_is_enabled,
+};
+
+/*
+ * EPOD control
+ */
+static bool epod_on[NUM_EPOD_ID];
+static bool epod_ramret[NUM_EPOD_ID];
+
+static int enable_epod(u16 epod_id, bool ramret)
+{
+ int ret;
+
+ if (ramret) {
+ if (!epod_on[epod_id]) {
+ ret = prcmu_set_epod(epod_id, EPOD_STATE_RAMRET);
+ if (ret < 0)
+ return ret;
+ }
+ epod_ramret[epod_id] = true;
+ } else {
+ ret = prcmu_set_epod(epod_id, EPOD_STATE_ON);
+ if (ret < 0)
+ return ret;
+ epod_on[epod_id] = true;
+ }
+
+ return 0;
+}
+
+static int disable_epod(u16 epod_id, bool ramret)
+{
+ int ret;
+
+ if (ramret) {
+ if (!epod_on[epod_id]) {
+ ret = prcmu_set_epod(epod_id, EPOD_STATE_OFF);
+ if (ret < 0)
+ return ret;
+ }
+ epod_ramret[epod_id] = false;
+ } else {
+ if (epod_ramret[epod_id]) {
+ ret = prcmu_set_epod(epod_id, EPOD_STATE_RAMRET);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = prcmu_set_epod(epod_id, EPOD_STATE_OFF);
+ if (ret < 0)
+ return ret;
+ }
+ epod_on[epod_id] = false;
+ }
+
+ return 0;
+}
+
+/*
+ * Regulator switch
+ */
+static int db8500_regulator_switch_enable(struct regulator_dev *rdev)
+{
+ struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ int ret;
+
+ if (info == NULL)
+ return -EINVAL;
+
+ dev_vdbg(rdev_get_dev(rdev), "regulator-switch-%s-enable\n",
+ info->desc.name);
+
+ ret = enable_epod(info->epod_id, info->is_ramret);
+ if (ret < 0) {
+ dev_err(rdev_get_dev(rdev),
+ "regulator-switch-%s-enable: prcmu call failed\n",
+ info->desc.name);
+ goto out;
+ }
+
+ info->is_enabled = true;
+out:
+ return ret;
+}
+
+static int db8500_regulator_switch_disable(struct regulator_dev *rdev)
+{
+ struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+ int ret;
+
+ if (info == NULL)
+ return -EINVAL;
+
+ dev_vdbg(rdev_get_dev(rdev), "regulator-switch-%s-disable\n",
+ info->desc.name);
+
+ ret = disable_epod(info->epod_id, info->is_ramret);
+ if (ret < 0) {
+ dev_err(rdev_get_dev(rdev),
+ "regulator_switch-%s-disable: prcmu call failed\n",
+ info->desc.name);
+ goto out;
+ }
+
+ info->is_enabled = 0;
+out:
+ return ret;
+}
+
+static int db8500_regulator_switch_is_enabled(struct regulator_dev *rdev)
+{
+ struct db8500_regulator_info *info = rdev_get_drvdata(rdev);
+
+ if (info == NULL)
+ return -EINVAL;
+
+ dev_vdbg(rdev_get_dev(rdev),
+ "regulator-switch-%s-is_enabled (is_enabled): %i\n",
+ info->desc.name, info->is_enabled);
+
+ return info->is_enabled;
+}
+
+static struct regulator_ops db8500_regulator_switch_ops = {
+ .enable = db8500_regulator_switch_enable,
+ .disable = db8500_regulator_switch_disable,
+ .is_enabled = db8500_regulator_switch_is_enabled,
+};
+
+/*
+ * Regulator information
+ */
+static struct db8500_regulator_info
+ db8500_regulator_info[DB8500_NUM_REGULATORS] = {
+ [DB8500_REGULATOR_VAPE] = {
+ .desc = {
+ .name = "db8500-vape",
+ .id = DB8500_REGULATOR_VAPE,
+ .ops = &db8500_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ },
+ [DB8500_REGULATOR_VARM] = {
+ .desc = {
+ .name = "db8500-varm",
+ .id = DB8500_REGULATOR_VARM,
+ .ops = &db8500_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ },
+ [DB8500_REGULATOR_VMODEM] = {
+ .desc = {
+ .name = "db8500-vmodem",
+ .id = DB8500_REGULATOR_VMODEM,
+ .ops = &db8500_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ },
+ [DB8500_REGULATOR_VPLL] = {
+ .desc = {
+ .name = "db8500-vpll",
+ .id = DB8500_REGULATOR_VPLL,
+ .ops = &db8500_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ },
+ [DB8500_REGULATOR_VSMPS1] = {
+ .desc = {
+ .name = "db8500-vsmps1",
+ .id = DB8500_REGULATOR_VSMPS1,
+ .ops = &db8500_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ },
+ [DB8500_REGULATOR_VSMPS2] = {
+ .desc = {
+ .name = "db8500-vsmps2",
+ .id = DB8500_REGULATOR_VSMPS2,
+ .ops = &db8500_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .exclude_from_power_state = true,
+ },
+ [DB8500_REGULATOR_VSMPS3] = {
+ .desc = {
+ .name = "db8500-vsmps3",
+ .id = DB8500_REGULATOR_VSMPS3,
+ .ops = &db8500_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ },
+ [DB8500_REGULATOR_VRF1] = {
+ .desc = {
+ .name = "db8500-vrf1",
+ .id = DB8500_REGULATOR_VRF1,
+ .ops = &db8500_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ },
+ [DB8500_REGULATOR_SWITCH_SVAMMDSP] = {
+ .desc = {
+ .name = "db8500-sva-mmdsp",
+ .id = DB8500_REGULATOR_SWITCH_SVAMMDSP,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_SVAMMDSP,
+ },
+ [DB8500_REGULATOR_SWITCH_SVAMMDSPRET] = {
+ .desc = {
+ .name = "db8500-sva-mmdsp-ret",
+ .id = DB8500_REGULATOR_SWITCH_SVAMMDSPRET,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_SVAMMDSP,
+ .is_ramret = true,
+ },
+ [DB8500_REGULATOR_SWITCH_SVAPIPE] = {
+ .desc = {
+ .name = "db8500-sva-pipe",
+ .id = DB8500_REGULATOR_SWITCH_SVAPIPE,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_SVAPIPE,
+ },
+ [DB8500_REGULATOR_SWITCH_SIAMMDSP] = {
+ .desc = {
+ .name = "db8500-sia-mmdsp",
+ .id = DB8500_REGULATOR_SWITCH_SIAMMDSP,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_SIAMMDSP,
+ },
+ [DB8500_REGULATOR_SWITCH_SIAMMDSPRET] = {
+ .desc = {
+ .name = "db8500-sia-mmdsp-ret",
+ .id = DB8500_REGULATOR_SWITCH_SIAMMDSPRET,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_SIAMMDSP,
+ .is_ramret = true,
+ },
+ [DB8500_REGULATOR_SWITCH_SIAPIPE] = {
+ .desc = {
+ .name = "db8500-sia-pipe",
+ .id = DB8500_REGULATOR_SWITCH_SIAPIPE,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_SIAPIPE,
+ },
+ [DB8500_REGULATOR_SWITCH_SGA] = {
+ .desc = {
+ .name = "db8500-sga",
+ .id = DB8500_REGULATOR_SWITCH_SGA,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_SGA,
+ },
+ [DB8500_REGULATOR_SWITCH_B2R2_MCDE] = {
+ .desc = {
+ .name = "db8500-b2r2-mcde",
+ .id = DB8500_REGULATOR_SWITCH_B2R2_MCDE,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_B2R2_MCDE,
+ },
+ [DB8500_REGULATOR_SWITCH_ESRAM12] = {
+ .desc = {
+ .name = "db8500-esram12",
+ .id = DB8500_REGULATOR_SWITCH_ESRAM12,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_ESRAM12,
+ .is_enabled = true,
+ },
+ [DB8500_REGULATOR_SWITCH_ESRAM12RET] = {
+ .desc = {
+ .name = "db8500-esram12-ret",
+ .id = DB8500_REGULATOR_SWITCH_ESRAM12RET,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_ESRAM12,
+ .is_ramret = true,
+ },
+ [DB8500_REGULATOR_SWITCH_ESRAM34] = {
+ .desc = {
+ .name = "db8500-esram34",
+ .id = DB8500_REGULATOR_SWITCH_ESRAM34,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_ESRAM34,
+ .is_enabled = true,
+ },
+ [DB8500_REGULATOR_SWITCH_ESRAM34RET] = {
+ .desc = {
+ .name = "db8500-esram34-ret",
+ .id = DB8500_REGULATOR_SWITCH_ESRAM34RET,
+ .ops = &db8500_regulator_switch_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .epod_id = EPOD_ID_ESRAM34,
+ .is_ramret = true,
+ },
+};
+
+static int __devinit db8500_regulator_probe(struct platform_device *pdev)
+{
+ struct regulator_init_data *db8500_init_data = mfd_get_data(pdev);
+ int i, err;
+
+ /* register all regulators */
+ for (i = 0; i < ARRAY_SIZE(db8500_regulator_info); i++) {
+ struct db8500_regulator_info *info;
+ struct regulator_init_data *init_data = &db8500_init_data[i];
+
+ /* assign per-regulator data */
+ info = &db8500_regulator_info[i];
+ info->dev = &pdev->dev;
+
+ /* register with the regulator framework */
+ info->rdev = regulator_register(&info->desc, &pdev->dev,
+ init_data, info);
+ if (IS_ERR(info->rdev)) {
+ err = PTR_ERR(info->rdev);
+ dev_err(&pdev->dev, "failed to register %s: err %i\n",
+ info->desc.name, err);
+
+ /* if failing, unregister all earlier regulators */
+ i--;
+ while (i >= 0) {
+ info = &db8500_regulator_info[i];
+ regulator_unregister(info->rdev);
+ i--;
+ }
+ return err;
+ }
+
+ dev_dbg(rdev_get_dev(info->rdev),
+ "regulator-%s-probed\n", info->desc.name);
+ }
+
+ return 0;
+}
+
+static int __exit db8500_regulator_remove(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(db8500_regulator_info); i++) {
+ struct db8500_regulator_info *info;
+ info = &db8500_regulator_info[i];
+
+ dev_vdbg(rdev_get_dev(info->rdev),
+ "regulator-%s-remove\n", info->desc.name);
+
+ regulator_unregister(info->rdev);
+ }
+
+ return 0;
+}
+
+static struct platform_driver db8500_regulator_driver = {
+ .driver = {
+ .name = "db8500-prcmu-regulators",
+ .owner = THIS_MODULE,
+ },
+ .probe = db8500_regulator_probe,
+ .remove = __exit_p(db8500_regulator_remove),
+};
+
+static int __init db8500_regulator_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&db8500_regulator_driver);
+ if (ret < 0)
+ return -ENODEV;
+
+ return 0;
+}
+
+static void __exit db8500_regulator_exit(void)
+{
+ platform_driver_unregister(&db8500_regulator_driver);
+}
+
+arch_initcall(db8500_regulator_init);
+module_exit(db8500_regulator_exit);
+
+MODULE_AUTHOR("STMicroelectronics/ST-Ericsson");
+MODULE_DESCRIPTION("DB8500 regulator driver");
+MODULE_LICENSE("GPL v2");