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-rw-r--r--arch/arm/mach-omap1/Kconfig2
-rw-r--r--arch/arm/mach-omap1/board-ams-delta.c116
-rw-r--r--arch/arm/plat-omap/include/plat/board-ams-delta.h1
3 files changed, 98 insertions, 21 deletions
diff --git a/arch/arm/mach-omap1/Kconfig b/arch/arm/mach-omap1/Kconfig
index 5b1edbae6893..4b6a774606cb 100644
--- a/arch/arm/mach-omap1/Kconfig
+++ b/arch/arm/mach-omap1/Kconfig
@@ -157,6 +157,8 @@ config MACH_AMS_DELTA
select FIQ
select GPIO_GENERIC_PLATFORM
select LEDS_GPIO_REGISTER
+ select REGULATOR
+ select REGULATOR_FIXED_VOLTAGE
help
Support for the Amstrad E3 (codename Delta) videophone. Say Y here
if you have such a device.
diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
index 87b13039f936..cb6afe670468 100644
--- a/arch/arm/mach-omap1/board-ams-delta.c
+++ b/arch/arm/mach-omap1/board-ams-delta.c
@@ -19,6 +19,9 @@
#include <linux/interrupt.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/regulator/fixed.h>
+#include <linux/regulator/machine.h>
#include <linux/serial_8250.h>
#include <linux/export.h>
@@ -150,11 +153,11 @@ static struct map_desc ams_delta_io_desc[] __initdata = {
}
};
-static struct omap_lcd_config ams_delta_lcd_config = {
+static struct omap_lcd_config ams_delta_lcd_config __initdata = {
.ctrl_name = "internal",
};
-static struct omap_usb_config ams_delta_usb_config __initdata = {
+static struct omap_usb_config ams_delta_usb_config = {
.register_host = 1,
.hmc_mode = 16,
.pins[0] = 2,
@@ -167,7 +170,7 @@ static struct omap_board_config_kernel ams_delta_config[] __initdata = {
#define LATCH1_GPIO_BASE 232
#define LATCH1_NGPIO 8
-static struct resource latch1_resources[] __initconst = {
+static struct resource latch1_resources[] = {
[0] = {
.name = "dat",
.start = LATCH1_PHYS,
@@ -176,7 +179,7 @@ static struct resource latch1_resources[] __initconst = {
},
};
-static struct bgpio_pdata latch1_pdata __initconst = {
+static struct bgpio_pdata latch1_pdata = {
.base = LATCH1_GPIO_BASE,
.ngpio = LATCH1_NGPIO,
};
@@ -191,7 +194,7 @@ static struct platform_device latch1_gpio_device = {
},
};
-static struct resource latch2_resources[] __initconst = {
+static struct resource latch2_resources[] = {
[0] = {
.name = "dat",
.start = LATCH2_PHYS,
@@ -200,7 +203,7 @@ static struct resource latch2_resources[] __initconst = {
},
};
-static struct bgpio_pdata latch2_pdata __initconst = {
+static struct bgpio_pdata latch2_pdata = {
.base = AMS_DELTA_LATCH2_GPIO_BASE,
.ngpio = AMS_DELTA_LATCH2_NGPIO,
};
@@ -215,7 +218,7 @@ static struct platform_device latch2_gpio_device = {
},
};
-static struct gpio latch_gpios[] __initconst = {
+static const struct gpio latch_gpios[] __initconst = {
{
.gpio = LATCH1_GPIO_BASE + 6,
.flags = GPIOF_OUT_INIT_LOW,
@@ -237,11 +240,6 @@ static struct gpio latch_gpios[] __initconst = {
.label = "scard_cmdvcc",
},
{
- .gpio = AMS_DELTA_GPIO_PIN_MODEM_NRESET,
- .flags = GPIOF_OUT_INIT_LOW,
- .label = "modem_nreset",
- },
- {
.gpio = AMS_DELTA_GPIO_PIN_MODEM_CODEC,
.flags = GPIOF_OUT_INIT_LOW,
.label = "modem_codec",
@@ -258,6 +256,44 @@ static struct gpio latch_gpios[] __initconst = {
},
};
+static struct regulator_consumer_supply modem_nreset_consumers[] = {
+ REGULATOR_SUPPLY("RESET#", "serial8250.1"),
+ REGULATOR_SUPPLY("POR", "cx20442-codec"),
+};
+
+static struct regulator_init_data modem_nreset_data = {
+ .constraints = {
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ .boot_on = 1,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(modem_nreset_consumers),
+ .consumer_supplies = modem_nreset_consumers,
+};
+
+static struct fixed_voltage_config modem_nreset_config = {
+ .supply_name = "modem_nreset",
+ .microvolts = 3300000,
+ .gpio = AMS_DELTA_GPIO_PIN_MODEM_NRESET,
+ .startup_delay = 25000,
+ .enable_high = 1,
+ .enabled_at_boot = 1,
+ .init_data = &modem_nreset_data,
+};
+
+static struct platform_device modem_nreset_device = {
+ .name = "reg-fixed-voltage",
+ .id = -1,
+ .dev = {
+ .platform_data = &modem_nreset_config,
+ },
+};
+
+struct modem_private_data {
+ struct regulator *regulator;
+};
+
+static struct modem_private_data modem_priv;
+
void ams_delta_latch_write(int base, int ngpio, u16 mask, u16 value)
{
int bit = 0;
@@ -266,7 +302,8 @@ void ams_delta_latch_write(int base, int ngpio, u16 mask, u16 value)
for (; bit < ngpio; bit++, bitpos = bitpos << 1) {
if (!(mask & bitpos))
continue;
- gpio_set_value(base + bit, (value & bitpos) != 0);
+ else
+ gpio_set_value(base + bit, (value & bitpos) != 0);
}
}
EXPORT_SYMBOL(ams_delta_latch_write);
@@ -300,7 +337,7 @@ static const struct matrix_keymap_data ams_delta_keymap_data = {
.keymap_size = ARRAY_SIZE(ams_delta_keymap),
};
-static struct omap_kp_platform_data ams_delta_kp_data __initdata = {
+static struct omap_kp_platform_data ams_delta_kp_data = {
.rows = 8,
.cols = 8,
.keymap_data = &ams_delta_keymap_data,
@@ -322,7 +359,7 @@ static struct platform_device ams_delta_lcd_device = {
.id = -1,
};
-static struct gpio_led gpio_leds[] __initconst = {
+static const struct gpio_led gpio_leds[] __initconst = {
{
.name = "camera",
.gpio = LATCH1_GPIO_BASE + 0,
@@ -358,7 +395,7 @@ static struct gpio_led gpio_leds[] __initconst = {
},
};
-static struct gpio_led_platform_data leds_pdata __initconst = {
+static const struct gpio_led_platform_data leds_pdata __initconst = {
.leds = gpio_leds,
.num_leds = ARRAY_SIZE(gpio_leds),
};
@@ -415,7 +452,7 @@ static struct platform_device *ams_delta_devices[] __initdata = {
&ams_delta_camera_device,
};
-static struct platform_device *late_devices[] __initconst = {
+static struct platform_device *late_devices[] __initdata = {
&ams_delta_nand_device,
&ams_delta_lcd_device,
};
@@ -459,6 +496,22 @@ static void __init ams_delta_init(void)
omap_writew(omap_readw(ARM_RSTCT1) | 0x0004, ARM_RSTCT1);
}
+static void modem_pm(struct uart_port *port, unsigned int state, unsigned old)
+{
+ struct modem_private_data *priv = port->private_data;
+
+ if (IS_ERR(priv->regulator))
+ return;
+
+ if (state == old)
+ return;
+
+ if (state == 0)
+ regulator_enable(priv->regulator);
+ else if (old == 0)
+ regulator_disable(priv->regulator);
+}
+
static struct plat_serial8250_port ams_delta_modem_ports[] = {
{
.membase = IOMEM(MODEM_VIRT),
@@ -469,6 +522,8 @@ static struct plat_serial8250_port ams_delta_modem_ports[] = {
.iotype = UPIO_MEM,
.regshift = 1,
.uartclk = BASE_BAUD * 16,
+ .pm = modem_pm,
+ .private_data = &modem_priv,
},
{ },
};
@@ -496,6 +551,12 @@ static int __init late_init(void)
platform_add_devices(late_devices, ARRAY_SIZE(late_devices));
+ err = platform_device_register(&modem_nreset_device);
+ if (err) {
+ pr_err("Couldn't register the modem regulator device\n");
+ return err;
+ }
+
omap_cfg_reg(M14_1510_GPIO2);
ams_delta_modem_ports[0].irq =
gpio_to_irq(AMS_DELTA_GPIO_PIN_MODEM_IRQ);
@@ -507,15 +568,30 @@ static int __init late_init(void)
}
gpio_direction_input(AMS_DELTA_GPIO_PIN_MODEM_IRQ);
- ams_delta_latch2_write(
- AMS_DELTA_LATCH2_MODEM_NRESET | AMS_DELTA_LATCH2_MODEM_CODEC,
- AMS_DELTA_LATCH2_MODEM_NRESET | AMS_DELTA_LATCH2_MODEM_CODEC);
+ /* Initialize the modem_nreset regulator consumer before use */
+ modem_priv.regulator = ERR_PTR(-ENODEV);
+
+ ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
+ AMS_DELTA_LATCH2_MODEM_CODEC);
err = platform_device_register(&ams_delta_modem_device);
if (err)
goto gpio_free;
+
+ /*
+ * Once the modem device is registered, the modem_nreset
+ * regulator can be requested on behalf of that device.
+ */
+ modem_priv.regulator = regulator_get(&ams_delta_modem_device.dev,
+ "RESET#");
+ if (IS_ERR(modem_priv.regulator)) {
+ err = PTR_ERR(modem_priv.regulator);
+ goto unregister;
+ }
return 0;
+unregister:
+ platform_device_unregister(&ams_delta_modem_device);
gpio_free:
gpio_free(AMS_DELTA_GPIO_PIN_MODEM_IRQ);
return err;
diff --git a/arch/arm/plat-omap/include/plat/board-ams-delta.h b/arch/arm/plat-omap/include/plat/board-ams-delta.h
index 027e79eead5e..ad6f865d1f16 100644
--- a/arch/arm/plat-omap/include/plat/board-ams-delta.h
+++ b/arch/arm/plat-omap/include/plat/board-ams-delta.h
@@ -30,7 +30,6 @@
#define AMD_DELTA_LATCH2_SCARD_RSTIN 0x0400
#define AMD_DELTA_LATCH2_SCARD_CMDVCC 0x0800
-#define AMS_DELTA_LATCH2_MODEM_NRESET 0x1000
#define AMS_DELTA_LATCH2_MODEM_CODEC 0x2000
#define AMS_DELTA_GPIO_PIN_KEYBRD_DATA 0
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-27 15:30:49 +0000