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>
This commit is contained in:
Guennadi Liakhovetski
Simon Horman
parent
df53721a60
commit
28307e0a7c
@ -29,6 +29,7 @@
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#include <linux/mmc/host.h>
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#include <linux/mmc/sh_mmcif.h>
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#include <linux/mmc/sh_mobile_sdhi.h>
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#include <linux/mfd/as3711.h>
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#include <linux/mfd/tmio.h>
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#include <linux/pinctrl/machine.h>
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#include <linux/pinctrl/pinconf-generic.h>
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@ -606,6 +607,140 @@ static struct platform_device fsi_ak4648_device = {
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};
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/* I2C */
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/* StepDown1 is used to supply 1.315V to the CPU */
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static struct regulator_init_data as3711_sd1 = {
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.constraints = {
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.name = "1.315V CPU",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 1315000,
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.max_uV = 1335000,
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},
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};
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/* StepDown2 is used to supply 1.8V to the CPU and to the board */
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static struct regulator_init_data as3711_sd2 = {
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.constraints = {
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.name = "1.8V",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 1800000,
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.max_uV = 1800000,
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},
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};
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/*
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* StepDown3 is switched in parallel with StepDown2, seems to be off,
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* according to read-back pre-set register values
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*/
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/* StepDown4 is used to supply 1.215V to the CPU and to the board */
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static struct regulator_init_data as3711_sd4 = {
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.constraints = {
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.name = "1.215V",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 1215000,
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.max_uV = 1235000,
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},
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};
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/* LDO1 is unused and unconnected */
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/* LDO2 is used to supply 2.8V to the CPU */
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static struct regulator_init_data as3711_ldo2 = {
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.constraints = {
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.name = "2.8V CPU",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 2800000,
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.max_uV = 2800000,
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},
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};
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/* LDO3 is used to supply 3.0V to the CPU */
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static struct regulator_init_data as3711_ldo3 = {
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.constraints = {
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.name = "3.0V CPU",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 3000000,
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.max_uV = 3000000,
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},
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};
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/* LDO4 is used to supply 2.8V to the board */
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static struct regulator_init_data as3711_ldo4 = {
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.constraints = {
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.name = "2.8V",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 2800000,
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.max_uV = 2800000,
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},
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};
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/* LDO5 is switched parallel to LDO4, also set to 2.8V */
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static struct regulator_init_data as3711_ldo5 = {
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.constraints = {
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.name = "2.8V #2",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 2800000,
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.max_uV = 2800000,
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},
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};
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/* LDO6 is unused and unconnected */
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/* LDO7 is used to supply 1.15V to the CPU */
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static struct regulator_init_data as3711_ldo7 = {
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.constraints = {
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.name = "1.15V CPU",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 1150000,
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.max_uV = 1150000,
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},
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};
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/* LDO8 is switched parallel to LDO7, also set to 1.15V */
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static struct regulator_init_data as3711_ldo8 = {
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.constraints = {
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.name = "1.15V CPU #2",
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.boot_on = 1,
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.always_on = 1,
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.min_uV = 1150000,
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.max_uV = 1150000,
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},
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};
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static struct as3711_platform_data as3711_pdata = {
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.regulator = {
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.init_data = {
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[AS3711_REGULATOR_SD_1] = &as3711_sd1,
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[AS3711_REGULATOR_SD_2] = &as3711_sd2,
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[AS3711_REGULATOR_SD_4] = &as3711_sd4,
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[AS3711_REGULATOR_LDO_2] = &as3711_ldo2,
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[AS3711_REGULATOR_LDO_3] = &as3711_ldo3,
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[AS3711_REGULATOR_LDO_4] = &as3711_ldo4,
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[AS3711_REGULATOR_LDO_5] = &as3711_ldo5,
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[AS3711_REGULATOR_LDO_7] = &as3711_ldo7,
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[AS3711_REGULATOR_LDO_8] = &as3711_ldo8,
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},
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},
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.backlight = {
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.su2_fb = "sh_mobile_lcdc_fb.0",
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.su2_max_uA = 36000,
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.su2_feedback = AS3711_SU2_CURR_AUTO,
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.su2_fbprot = AS3711_SU2_GPIO4,
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.su2_auto_curr1 = true,
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.su2_auto_curr2 = true,
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.su2_auto_curr3 = true,
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},
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};
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static struct pcf857x_platform_data pcf8575_pdata = {
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.gpio_base = GPIO_PCF8575_BASE,
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};
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@ -625,6 +760,11 @@ static struct i2c_board_info i2c0_devices[] = {
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I2C_BOARD_INFO("adxl34x", 0x1d),
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.irq = irq_pin(26), /* IRQ26 */
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},
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{
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I2C_BOARD_INFO("as3711", 0x40),
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.irq = intcs_evt2irq(0x3300), /* IRQ24 */
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.platform_data = &as3711_pdata,
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},
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};
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static struct i2c_board_info i2c1_devices[] = {
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@ -715,59 +855,6 @@ static const struct pinctrl_map kzm_pinctrl_map[] = {
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"usb_vbus", "usb"),
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};
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/*
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* FIXME
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*
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* This is quick hack for enabling LCDC backlight
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*/
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static int __init as3711_enable_lcdc_backlight(void)
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{
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struct i2c_adapter *a = i2c_get_adapter(0);
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struct i2c_msg msg;
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int i, ret;
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__u8 magic[] = {
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0x40, 0x2a,
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0x43, 0x3c,
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0x44, 0x3c,
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0x45, 0x3c,
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0x54, 0x03,
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0x51, 0x00,
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0x51, 0x01,
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0xff, 0x00, /* wait */
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0x43, 0xf0,
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0x44, 0xf0,
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0x45, 0xf0,
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};
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if (!of_machine_is_compatible("renesas,kzm9g"))
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return 0;
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if (!a)
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return 0;
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msg.addr = 0x40;
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msg.len = 2;
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msg.flags = 0;
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for (i = 0; i < ARRAY_SIZE(magic); i += 2) {
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msg.buf = magic + i;
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if (0xff == msg.buf[0]) {
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udelay(500);
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continue;
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}
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ret = i2c_transfer(a, &msg, 1);
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if (ret < 0) {
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pr_err("i2c transfer fail\n");
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break;
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}
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}
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return 0;
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}
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device_initcall(as3711_enable_lcdc_backlight);
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static void __init kzm_init(void)
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{
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regulator_register_always_on(2, "fixed-1.8V", fixed1v8_power_consumers,
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