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authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 18:45:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 18:45:38 -0800
commit9b6d351a75dae25430383b29a3764ae7921f6c47 (patch)
tree605b1ec9f90138553cb7efedf9dbb3df93bef3a8 /drivers/pinctrl/pinctrl-nomadik.c
parentdfd10e7ae60c6c1b24b5d601744b4fd1ecab2f31 (diff)
parent310c85476d5047f5ace4d1c527e1bbbc0c7ad672 (diff)
Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC DT updates from Olof Johansson: "DT and DT-conversion-related changes for various ARM platforms. Most of these are to enable various devices on various boards, etc, and not necessarily worth enumerating. New boards and systems continue to come in as new devicetree files that don't require corresponding C changes any more, which is indicating that the system is starting to work fairly well. A few things worth pointing out: * ST Ericsson ux500 platforms have made the major push to move over to fully support the platform with DT * Renesas platforms continue their conversion over from legacy platform devices to DT-based for hardware description" * tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (327 commits) ARM: dts: SiRF: add pin group for USP0 with only RX or TX frame sync ARM: dts: SiRF: add lost usp1_uart_nostreamctrl pin group for atlas6 ARM: dts: sirf: add lost minigpsrtc device node ARM: dts: sirf: add clock, frequence-voltage table for CPU0 ARM: dts: sirf: add lost bus_width, clock and status for sdhci ARM: dts: sirf: add lost clocks for cphifbg ARM: dts: socfpga: add pl330 clock ARM: dts: socfpga: update L2 tag and data latency arm: sun7i: cubietruck: Enable the i2c controllers ARM: dts: add support for EXYNOS4412 based TINY4412 board ARM: dts: Add initial support for Arndale Octa board ARM: bcm2835: add USB controller to device tree ARM: dts: MSM8974: Add MMIO architected timer node ARM: dts: MSM8974: Add restart node ARM: dts: sun7i: external clock outputs ARM: dts: sun7i: Change 32768 Hz oscillator node name to clk@N style ARM: dts: sun7i: Add pin muxing options for clock outputs ARM: dts: sun7i: Add rtp controller node ARM: dts: sun5i: Add rtp controller node ARM: dts: sun4i: Add rtp controller node ...
Diffstat (limited to 'drivers/pinctrl/pinctrl-nomadik.c')
-rw-r--r--drivers/pinctrl/pinctrl-nomadik.c296
1 files changed, 237 insertions, 59 deletions
diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c
index cd2b1a1c9275..53a11114927f 100644
--- a/drivers/pinctrl/pinctrl-nomadik.c
+++ b/drivers/pinctrl/pinctrl-nomadik.c
@@ -4,7 +4,7 @@
* Copyright (C) 2008,2009 STMicroelectronics
* Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it>
* Rewritten based on work by Prafulla WADASKAR <prafulla.wadaskar@st.com>
- * Copyright (C) 2011 Linus Walleij <linus.walleij@linaro.org>
+ * Copyright (C) 2011-2013 Linus Walleij <linus.walleij@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -33,7 +33,6 @@
#include <linux/pinctrl/pinconf.h>
/* Since we request GPIOs from ourself */
#include <linux/pinctrl/consumer.h>
-#include <linux/platform_data/pinctrl-nomadik.h>
#include "pinctrl-nomadik.h"
#include "core.h"
@@ -45,6 +44,221 @@
* Symbols in this file are called "nmk_gpio" for "nomadik gpio"
*/
+/*
+ * pin configurations are represented by 32-bit integers:
+ *
+ * bit 0.. 8 - Pin Number (512 Pins Maximum)
+ * bit 9..10 - Alternate Function Selection
+ * bit 11..12 - Pull up/down state
+ * bit 13 - Sleep mode behaviour
+ * bit 14 - Direction
+ * bit 15 - Value (if output)
+ * bit 16..18 - SLPM pull up/down state
+ * bit 19..20 - SLPM direction
+ * bit 21..22 - SLPM Value (if output)
+ * bit 23..25 - PDIS value (if input)
+ * bit 26 - Gpio mode
+ * bit 27 - Sleep mode
+ *
+ * to facilitate the definition, the following macros are provided
+ *
+ * PIN_CFG_DEFAULT - default config (0):
+ * pull up/down = disabled
+ * sleep mode = input/wakeup
+ * direction = input
+ * value = low
+ * SLPM direction = same as normal
+ * SLPM pull = same as normal
+ * SLPM value = same as normal
+ *
+ * PIN_CFG - default config with alternate function
+ */
+
+typedef unsigned long pin_cfg_t;
+
+#define PIN_NUM_MASK 0x1ff
+#define PIN_NUM(x) ((x) & PIN_NUM_MASK)
+
+#define PIN_ALT_SHIFT 9
+#define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT)
+#define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT)
+#define PIN_GPIO (NMK_GPIO_ALT_GPIO << PIN_ALT_SHIFT)
+#define PIN_ALT_A (NMK_GPIO_ALT_A << PIN_ALT_SHIFT)
+#define PIN_ALT_B (NMK_GPIO_ALT_B << PIN_ALT_SHIFT)
+#define PIN_ALT_C (NMK_GPIO_ALT_C << PIN_ALT_SHIFT)
+
+#define PIN_PULL_SHIFT 11
+#define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT)
+#define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT)
+#define PIN_PULL_NONE (NMK_GPIO_PULL_NONE << PIN_PULL_SHIFT)
+#define PIN_PULL_UP (NMK_GPIO_PULL_UP << PIN_PULL_SHIFT)
+#define PIN_PULL_DOWN (NMK_GPIO_PULL_DOWN << PIN_PULL_SHIFT)
+
+#define PIN_SLPM_SHIFT 13
+#define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT)
+#define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT)
+#define PIN_SLPM_MAKE_INPUT (NMK_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT)
+#define PIN_SLPM_NOCHANGE (NMK_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT)
+/* These two replace the above in DB8500v2+ */
+#define PIN_SLPM_WAKEUP_ENABLE (NMK_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT)
+#define PIN_SLPM_WAKEUP_DISABLE (NMK_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT)
+#define PIN_SLPM_USE_MUX_SETTINGS_IN_SLEEP PIN_SLPM_WAKEUP_DISABLE
+
+#define PIN_SLPM_GPIO PIN_SLPM_WAKEUP_ENABLE /* In SLPM, pin is a gpio */
+#define PIN_SLPM_ALTFUNC PIN_SLPM_WAKEUP_DISABLE /* In SLPM, pin is altfunc */
+
+#define PIN_DIR_SHIFT 14
+#define PIN_DIR_MASK (0x1 << PIN_DIR_SHIFT)
+#define PIN_DIR(x) (((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT)
+#define PIN_DIR_INPUT (0 << PIN_DIR_SHIFT)
+#define PIN_DIR_OUTPUT (1 << PIN_DIR_SHIFT)
+
+#define PIN_VAL_SHIFT 15
+#define PIN_VAL_MASK (0x1 << PIN_VAL_SHIFT)
+#define PIN_VAL(x) (((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT)
+#define PIN_VAL_LOW (0 << PIN_VAL_SHIFT)
+#define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT)
+
+#define PIN_SLPM_PULL_SHIFT 16
+#define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL(x) \
+ (((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_NONE \
+ ((1 + NMK_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_UP \
+ ((1 + NMK_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT)
+#define PIN_SLPM_PULL_DOWN \
+ ((1 + NMK_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT)
+
+#define PIN_SLPM_DIR_SHIFT 19
+#define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR(x) \
+ (((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT)
+#define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT)
+
+#define PIN_SLPM_VAL_SHIFT 21
+#define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL(x) \
+ (((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT)
+#define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT)
+
+#define PIN_SLPM_PDIS_SHIFT 23
+#define PIN_SLPM_PDIS_MASK (0x3 << PIN_SLPM_PDIS_SHIFT)
+#define PIN_SLPM_PDIS(x) \
+ (((x) & PIN_SLPM_PDIS_MASK) >> PIN_SLPM_PDIS_SHIFT)
+#define PIN_SLPM_PDIS_NO_CHANGE (0 << PIN_SLPM_PDIS_SHIFT)
+#define PIN_SLPM_PDIS_DISABLED (1 << PIN_SLPM_PDIS_SHIFT)
+#define PIN_SLPM_PDIS_ENABLED (2 << PIN_SLPM_PDIS_SHIFT)
+
+#define PIN_LOWEMI_SHIFT 25
+#define PIN_LOWEMI_MASK (0x1 << PIN_LOWEMI_SHIFT)
+#define PIN_LOWEMI(x) (((x) & PIN_LOWEMI_MASK) >> PIN_LOWEMI_SHIFT)
+#define PIN_LOWEMI_DISABLED (0 << PIN_LOWEMI_SHIFT)
+#define PIN_LOWEMI_ENABLED (1 << PIN_LOWEMI_SHIFT)
+
+#define PIN_GPIOMODE_SHIFT 26
+#define PIN_GPIOMODE_MASK (0x1 << PIN_GPIOMODE_SHIFT)
+#define PIN_GPIOMODE(x) (((x) & PIN_GPIOMODE_MASK) >> PIN_GPIOMODE_SHIFT)
+#define PIN_GPIOMODE_DISABLED (0 << PIN_GPIOMODE_SHIFT)
+#define PIN_GPIOMODE_ENABLED (1 << PIN_GPIOMODE_SHIFT)
+
+#define PIN_SLEEPMODE_SHIFT 27
+#define PIN_SLEEPMODE_MASK (0x1 << PIN_SLEEPMODE_SHIFT)
+#define PIN_SLEEPMODE(x) (((x) & PIN_SLEEPMODE_MASK) >> PIN_SLEEPMODE_SHIFT)
+#define PIN_SLEEPMODE_DISABLED (0 << PIN_SLEEPMODE_SHIFT)
+#define PIN_SLEEPMODE_ENABLED (1 << PIN_SLEEPMODE_SHIFT)
+
+
+/* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */
+#define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN)
+#define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP)
+#define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE)
+#define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW)
+#define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH)
+
+#define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN)
+#define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP)
+#define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE)
+#define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW)
+#define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH)
+
+#define PIN_CFG_DEFAULT (0)
+
+#define PIN_CFG(num, alt) \
+ (PIN_CFG_DEFAULT |\
+ (PIN_NUM(num) | PIN_##alt))
+
+#define PIN_CFG_INPUT(num, alt, pull) \
+ (PIN_CFG_DEFAULT |\
+ (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull))
+
+#define PIN_CFG_OUTPUT(num, alt, val) \
+ (PIN_CFG_DEFAULT |\
+ (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val))
+
+/*
+ * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving
+ * the "gpio" namespace for generic and cross-machine functions
+ */
+
+#define GPIO_BLOCK_SHIFT 5
+#define NMK_GPIO_PER_CHIP (1 << GPIO_BLOCK_SHIFT)
+
+/* Register in the logic block */
+#define NMK_GPIO_DAT 0x00
+#define NMK_GPIO_DATS 0x04
+#define NMK_GPIO_DATC 0x08
+#define NMK_GPIO_PDIS 0x0c
+#define NMK_GPIO_DIR 0x10
+#define NMK_GPIO_DIRS 0x14
+#define NMK_GPIO_DIRC 0x18
+#define NMK_GPIO_SLPC 0x1c
+#define NMK_GPIO_AFSLA 0x20
+#define NMK_GPIO_AFSLB 0x24
+#define NMK_GPIO_LOWEMI 0x28
+
+#define NMK_GPIO_RIMSC 0x40
+#define NMK_GPIO_FIMSC 0x44
+#define NMK_GPIO_IS 0x48
+#define NMK_GPIO_IC 0x4c
+#define NMK_GPIO_RWIMSC 0x50
+#define NMK_GPIO_FWIMSC 0x54
+#define NMK_GPIO_WKS 0x58
+/* These appear in DB8540 and later ASICs */
+#define NMK_GPIO_EDGELEVEL 0x5C
+#define NMK_GPIO_LEVEL 0x60
+
+
+/* Pull up/down values */
+enum nmk_gpio_pull {
+ NMK_GPIO_PULL_NONE,
+ NMK_GPIO_PULL_UP,
+ NMK_GPIO_PULL_DOWN,
+};
+
+/* Sleep mode */
+enum nmk_gpio_slpm {
+ NMK_GPIO_SLPM_INPUT,
+ NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT,
+ NMK_GPIO_SLPM_NOCHANGE,
+ NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE,
+};
+
+/*
+ * Platform data to register a block: only the initial gpio/irq number.
+ */
+struct nmk_gpio_platform_data {
+ char *name;
+ int first_gpio;
+ int first_irq;
+ int num_gpio;
+ u32 (*get_secondary_status)(unsigned int bank);
+ void (*set_ioforce)(bool enable);
+ bool supports_sleepmode;
+};
+
struct nmk_gpio_chip {
struct gpio_chip chip;
struct irq_domain *domain;
@@ -1026,7 +1240,7 @@ static const struct irq_domain_ops nmk_gpio_irq_simple_ops = {
static int nmk_gpio_probe(struct platform_device *dev)
{
- struct nmk_gpio_platform_data *pdata = dev->dev.platform_data;
+ struct nmk_gpio_platform_data *pdata;
struct device_node *np = dev->dev.of_node;
struct nmk_gpio_chip *nmk_chip;
struct gpio_chip *chip;
@@ -1034,32 +1248,24 @@ static int nmk_gpio_probe(struct platform_device *dev)
struct clk *clk;
int secondary_irq;
void __iomem *base;
- int irq_start = 0;
int irq;
int ret;
- if (!pdata && !np) {
- dev_err(&dev->dev, "No platform data or device tree found\n");
- return -ENODEV;
- }
-
- if (np) {
- pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
-
- if (of_get_property(np, "st,supports-sleepmode", NULL))
- pdata->supports_sleepmode = true;
+ pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
- if (of_property_read_u32(np, "gpio-bank", &dev->id)) {
- dev_err(&dev->dev, "gpio-bank property not found\n");
- return -EINVAL;
- }
+ if (of_get_property(np, "st,supports-sleepmode", NULL))
+ pdata->supports_sleepmode = true;
- pdata->first_gpio = dev->id * NMK_GPIO_PER_CHIP;
- pdata->num_gpio = NMK_GPIO_PER_CHIP;
+ if (of_property_read_u32(np, "gpio-bank", &dev->id)) {
+ dev_err(&dev->dev, "gpio-bank property not found\n");
+ return -EINVAL;
}
+ pdata->first_gpio = dev->id * NMK_GPIO_PER_CHIP;
+ pdata->num_gpio = NMK_GPIO_PER_CHIP;
+
irq = platform_get_irq(dev, 0);
if (irq < 0)
return irq;
@@ -1107,10 +1313,7 @@ static int nmk_gpio_probe(struct platform_device *dev)
clk_enable(nmk_chip->clk);
nmk_chip->lowemi = readl_relaxed(nmk_chip->addr + NMK_GPIO_LOWEMI);
clk_disable(nmk_chip->clk);
-
-#ifdef CONFIG_OF_GPIO
chip->of_node = np;
-#endif
ret = gpiochip_add(&nmk_chip->chip);
if (ret)
@@ -1122,10 +1325,8 @@ static int nmk_gpio_probe(struct platform_device *dev)
platform_set_drvdata(dev, nmk_chip);
- if (!np)
- irq_start = pdata->first_irq;
nmk_chip->domain = irq_domain_add_simple(np,
- NMK_GPIO_PER_CHIP, irq_start,
+ NMK_GPIO_PER_CHIP, 0,
&nmk_gpio_irq_simple_ops, nmk_chip);
if (!nmk_chip->domain) {
dev_err(&dev->dev, "failed to create irqdomain\n");
@@ -1858,11 +2059,10 @@ static int nmk_pinctrl_resume(struct platform_device *pdev)
static int nmk_pinctrl_probe(struct platform_device *pdev)
{
- const struct platform_device_id *platid = platform_get_device_id(pdev);
+ const struct of_device_id *match;
struct device_node *np = pdev->dev.of_node;
struct device_node *prcm_np;
struct nmk_pinctrl *npct;
- struct resource *res;
unsigned int version = 0;
int i;
@@ -1870,16 +2070,10 @@ static int nmk_pinctrl_probe(struct platform_device *pdev)
if (!npct)
return -ENOMEM;
- if (platid)
- version = platid->driver_data;
- else if (np) {
- const struct of_device_id *match;
-
- match = of_match_device(nmk_pinctrl_match, &pdev->dev);
- if (!match)
- return -ENODEV;
- version = (unsigned int) match->data;
- }
+ match = of_match_device(nmk_pinctrl_match, &pdev->dev);
+ if (!match)
+ return -ENODEV;
+ version = (unsigned int) match->data;
/* Poke in other ASIC variants here */
if (version == PINCTRL_NMK_STN8815)
@@ -1889,17 +2083,9 @@ static int nmk_pinctrl_probe(struct platform_device *pdev)
if (version == PINCTRL_NMK_DB8540)
nmk_pinctrl_db8540_init(&npct->soc);
- if (np) {
- prcm_np = of_parse_phandle(np, "prcm", 0);
- if (prcm_np)
- npct->prcm_base = of_iomap(prcm_np, 0);
- }
-
- /* Allow platform passed information to over-write DT. */
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res)
- npct->prcm_base = devm_ioremap(&pdev->dev, res->start,
- resource_size(res));
+ prcm_np = of_parse_phandle(np, "prcm", 0);
+ if (prcm_np)
+ npct->prcm_base = of_iomap(prcm_np, 0);
if (!npct->prcm_base) {
if (version == PINCTRL_NMK_STN8815) {
dev_info(&pdev->dev,
@@ -1958,13 +2144,6 @@ static struct platform_driver nmk_gpio_driver = {
.probe = nmk_gpio_probe,
};
-static const struct platform_device_id nmk_pinctrl_id[] = {
- { "pinctrl-stn8815", PINCTRL_NMK_STN8815 },
- { "pinctrl-db8500", PINCTRL_NMK_DB8500 },
- { "pinctrl-db8540", PINCTRL_NMK_DB8540 },
- { }
-};
-
static struct platform_driver nmk_pinctrl_driver = {
.driver = {
.owner = THIS_MODULE,
@@ -1972,7 +2151,6 @@ static struct platform_driver nmk_pinctrl_driver = {
.of_match_table = nmk_pinctrl_match,
},
.probe = nmk_pinctrl_probe,
- .id_table = nmk_pinctrl_id,
#ifdef CONFIG_PM
.suspend = nmk_pinctrl_suspend,
.resume = nmk_pinctrl_resume,