Commit 28307e0a authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Simon Horman

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: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
parent df53721a
......@@ -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,
......
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