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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2013-02-12 17:15:31 +0000
committerSimon Horman <horms+renesas@verge.net.au>2013-06-07 14:26:31 +0900
commit28307e0a7c3841f2d54876639235c07ebe3d2999 (patch)
treeab8b7a1d5b3da82da279c2790070ccf71ba64e86 /arch/arm
parentdf53721a60022263017c5d72e17a7780d0e5dc4c (diff)
ARM: shmobile: kzm9g: add AS3711 PMIC platform data
KZM9G uses an AS3711 PMIC to supply power to the CPU and the LCD backlight. The PMIC on the board is pre-programmed to supply correct voltages to the CPU, power supply to the backlight has to be turned on at run-time. The latter is currently performed by a hard-coded I2C command sequence in the board file. This patch removes the backlight hack and instead adds an I2C device to instantiate the AS3711 MFD driver, which will add a regulator device to dynamically adjust CPU voltages and a backlight device. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-shmobile/board-kzm9g.c193
1 files changed, 140 insertions, 53 deletions
diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
index 1fdf05cb6da..165483c9bee 100644
--- a/arch/arm/mach-shmobile/board-kzm9g.c
+++ b/arch/arm/mach-shmobile/board-kzm9g.c
@@ -29,6 +29,7 @@
#include <linux/mmc/host.h>
#include <linux/mmc/sh_mmcif.h>
#include <linux/mmc/sh_mobile_sdhi.h>
+#include <linux/mfd/as3711.h>
#include <linux/mfd/tmio.h>
#include <linux/pinctrl/machine.h>
#include <linux/pinctrl/pinconf-generic.h>
@@ -606,6 +607,140 @@ static struct platform_device fsi_ak4648_device = {
};
/* I2C */
+
+/* StepDown1 is used to supply 1.315V to the CPU */
+static struct regulator_init_data as3711_sd1 = {
+ .constraints = {
+ .name = "1.315V CPU",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 1315000,
+ .max_uV = 1335000,
+ },
+};
+
+/* StepDown2 is used to supply 1.8V to the CPU and to the board */
+static struct regulator_init_data as3711_sd2 = {
+ .constraints = {
+ .name = "1.8V",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ },
+};
+
+/*
+ * StepDown3 is switched in parallel with StepDown2, seems to be off,
+ * according to read-back pre-set register values
+ */
+
+/* StepDown4 is used to supply 1.215V to the CPU and to the board */
+static struct regulator_init_data as3711_sd4 = {
+ .constraints = {
+ .name = "1.215V",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 1215000,
+ .max_uV = 1235000,
+ },
+};
+
+/* LDO1 is unused and unconnected */
+
+/* LDO2 is used to supply 2.8V to the CPU */
+static struct regulator_init_data as3711_ldo2 = {
+ .constraints = {
+ .name = "2.8V CPU",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 2800000,
+ .max_uV = 2800000,
+ },
+};
+
+/* LDO3 is used to supply 3.0V to the CPU */
+static struct regulator_init_data as3711_ldo3 = {
+ .constraints = {
+ .name = "3.0V CPU",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 3000000,
+ .max_uV = 3000000,
+ },
+};
+
+/* LDO4 is used to supply 2.8V to the board */
+static struct regulator_init_data as3711_ldo4 = {
+ .constraints = {
+ .name = "2.8V",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 2800000,
+ .max_uV = 2800000,
+ },
+};
+
+/* LDO5 is switched parallel to LDO4, also set to 2.8V */
+static struct regulator_init_data as3711_ldo5 = {
+ .constraints = {
+ .name = "2.8V #2",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 2800000,
+ .max_uV = 2800000,
+ },
+};
+
+/* LDO6 is unused and unconnected */
+
+/* LDO7 is used to supply 1.15V to the CPU */
+static struct regulator_init_data as3711_ldo7 = {
+ .constraints = {
+ .name = "1.15V CPU",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 1150000,
+ .max_uV = 1150000,
+ },
+};
+
+/* LDO8 is switched parallel to LDO7, also set to 1.15V */
+static struct regulator_init_data as3711_ldo8 = {
+ .constraints = {
+ .name = "1.15V CPU #2",
+ .boot_on = 1,
+ .always_on = 1,
+ .min_uV = 1150000,
+ .max_uV = 1150000,
+ },
+};
+
+static struct as3711_platform_data as3711_pdata = {
+ .regulator = {
+ .init_data = {
+ [AS3711_REGULATOR_SD_1] = &as3711_sd1,
+ [AS3711_REGULATOR_SD_2] = &as3711_sd2,
+ [AS3711_REGULATOR_SD_4] = &as3711_sd4,
+ [AS3711_REGULATOR_LDO_2] = &as3711_ldo2,
+ [AS3711_REGULATOR_LDO_3] = &as3711_ldo3,
+ [AS3711_REGULATOR_LDO_4] = &as3711_ldo4,
+ [AS3711_REGULATOR_LDO_5] = &as3711_ldo5,
+ [AS3711_REGULATOR_LDO_7] = &as3711_ldo7,
+ [AS3711_REGULATOR_LDO_8] = &as3711_ldo8,
+ },
+ },
+ .backlight = {
+ .su2_fb = "sh_mobile_lcdc_fb.0",
+ .su2_max_uA = 36000,
+ .su2_feedback = AS3711_SU2_CURR_AUTO,
+ .su2_fbprot = AS3711_SU2_GPIO4,
+ .su2_auto_curr1 = true,
+ .su2_auto_curr2 = true,
+ .su2_auto_curr3 = true,
+ },
+};
+
static struct pcf857x_platform_data pcf8575_pdata = {
.gpio_base = GPIO_PCF8575_BASE,
};
@@ -625,6 +760,11 @@ static struct i2c_board_info i2c0_devices[] = {
I2C_BOARD_INFO("adxl34x", 0x1d),
.irq = irq_pin(26), /* IRQ26 */
},
+ {
+ I2C_BOARD_INFO("as3711", 0x40),
+ .irq = intcs_evt2irq(0x3300), /* IRQ24 */
+ .platform_data = &as3711_pdata,
+ },
};
static struct i2c_board_info i2c1_devices[] = {
@@ -715,59 +855,6 @@ static const struct pinctrl_map kzm_pinctrl_map[] = {
"usb_vbus", "usb"),
};
-/*
- * FIXME
- *
- * This is quick hack for enabling LCDC backlight
- */
-static int __init as3711_enable_lcdc_backlight(void)
-{
- struct i2c_adapter *a = i2c_get_adapter(0);
- struct i2c_msg msg;
- int i, ret;
- __u8 magic[] = {
- 0x40, 0x2a,
- 0x43, 0x3c,
- 0x44, 0x3c,
- 0x45, 0x3c,
- 0x54, 0x03,
- 0x51, 0x00,
- 0x51, 0x01,
- 0xff, 0x00, /* wait */
- 0x43, 0xf0,
- 0x44, 0xf0,
- 0x45, 0xf0,
- };
-
- if (!of_machine_is_compatible("renesas,kzm9g"))
- return 0;
-
- if (!a)
- return 0;
-
- msg.addr = 0x40;
- msg.len = 2;
- msg.flags = 0;
-
- for (i = 0; i < ARRAY_SIZE(magic); i += 2) {
- msg.buf = magic + i;
-
- if (0xff == msg.buf[0]) {
- udelay(500);
- continue;
- }
-
- ret = i2c_transfer(a, &msg, 1);
- if (ret < 0) {
- pr_err("i2c transfer fail\n");
- break;
- }
- }
-
- return 0;
-}
-device_initcall(as3711_enable_lcdc_backlight);
-
static void __init kzm_init(void)
{
regulator_register_always_on(2, "fixed-1.8V", fixed1v8_power_consumers,