efikamx: add mc13892 support / implement power off

This patch declares regulators for the efikamx. Use it also to power off the
efikamx.
Unfortunately, on the efikamx to2 boards, this doesn't work but they allow to
power off by setting GPIO 4 13 to high level instead of powering off through
the mc13892.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 407 insertions, 0 deletions

diff --git a/arch/arm/mach-mx5/board-mx51_efikamx.c b/arch/arm/mach-mx5/board-mx51_efikamx.c
index 8f17336..acab191 100644
--- a/arch/arm/mach-mx5/board-mx51_efikamx.c
+++ b/arch/arm/mach-mx5/board-mx51_efikamx.c
@@ -25,6 +25,9 @@
 #include <linux/fsl_devices.h>
 #include <linux/spi/flash.h>
 #include <linux/spi/spi.h>
+#include <linux/mfd/mc13892.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/consumer.h>
 
 #include <mach/common.h>
 #include <mach/hardware.h>
@@ -56,6 +59,10 @@
 #define EFIKAMX_RESET1_1	IMX_GPIO_NR(3, 2)
 #define EFIKAMX_RESET		IMX_GPIO_NR(1, 4)
 
+#define EFIKAMX_POWEROFF	IMX_GPIO_NR(4, 13)
+
+#define EFIKAMX_PMIC		IMX_GPIO_NR(1, 6)
+
 /* the pci ids pin have pull up. they're driven low according to board id */
 #define MX51_PAD_PCBID0	IOMUX_PAD(0x518, 0x130, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)
 #define MX51_PAD_PCBID1	IOMUX_PAD(0x51C, 0x134, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)
@@ -79,6 +86,9 @@ static iomux_v3_cfg_t mx51efikamx_pads[] = {
 	/* reset */
 	MX51_PAD_DI1_PIN13__GPIO3_2,
 	MX51_PAD_GPIO1_4__GPIO1_4,
+
+	/* power off */
+	MX51_PAD_CSI2_VSYNC__GPIO4_13,
 };
 
 /*   PCBID2  PCBID1 PCBID0  STATE
@@ -187,6 +197,46 @@ void mx51_efikamx_reset(void)
 		gpio_direction_output(EFIKAMX_RESET, 0);
 }
 
+static struct regulator *pwgt1, *pwgt2, *coincell;
+
+static void mx51_efikamx_power_off(void)
+{
+	if (!IS_ERR(coincell))
+		regulator_disable(coincell);
+
+	if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
+		regulator_disable(pwgt2);
+		regulator_disable(pwgt1);
+	}
+	gpio_direction_output(EFIKAMX_POWEROFF, 1);
+}
+
+static int __init mx51_efikamx_power_init(void)
+{
+	if (machine_is_mx51_efikamx()) {
+		pwgt1 = regulator_get(NULL, "pwgt1");
+		pwgt2 = regulator_get(NULL, "pwgt2");
+		if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
+			regulator_enable(pwgt1);
+			regulator_enable(pwgt2);
+		}
+		gpio_request(EFIKAMX_POWEROFF, "poweroff");
+		pm_power_off = mx51_efikamx_power_off;
+
+		/* enable coincell charger. maybe need a small power driver ? */
+		coincell = regulator_get(NULL, "coincell");
+		if (!IS_ERR(coincell)) {
+			regulator_set_voltage(coincell, 3000000, 3000000);
+			regulator_enable(coincell);
+		}
+
+		regulator_has_full_constraints();
+	}
+
+	return 0;
+}
+late_initcall(mx51_efikamx_power_init);
+
 static void __init mx51_efikamx_init(void)
 {
 	mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
diff --git a/arch/arm/mach-mx5/mx51_efika.c b/arch/arm/mach-mx5/mx51_efika.c
index c08ec63..b4d5ae9 100644
--- a/arch/arm/mach-mx5/mx51_efika.c
+++ b/arch/arm/mach-mx5/mx51_efika.c
@@ -23,6 +23,9 @@
 #include <linux/fsl_devices.h>
 #include <linux/spi/flash.h>
 #include <linux/spi/spi.h>
+#include <linux/mfd/mc13892.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/consumer.h>
 
 #include <mach/common.h>
 #include <mach/hardware.h>
@@ -39,6 +42,7 @@
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
+#include <asm/mach-types.h>
 
 #include "devices-imx51.h"
 #include "devices.h"
@@ -54,6 +58,8 @@
 #define EFIKAMX_SPI_CS0		IMX_GPIO_NR(4, 24)
 #define EFIKAMX_SPI_CS1		IMX_GPIO_NR(4, 25)
 
+#define EFIKAMX_PMIC		IMX_GPIO_NR(1, 6)
+
 static iomux_v3_cfg_t mx51efika_pads[] = {
 	/* UART1 */
 	MX51_PAD_UART1_RXD__UART1_RXD,
@@ -90,6 +96,7 @@ static iomux_v3_cfg_t mx51efika_pads[] = {
 	MX51_PAD_CSPI1_SS1__GPIO4_25,
 	MX51_PAD_CSPI1_RDY__ECSPI1_RDY,
 	MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK,
+	MX51_PAD_GPIO1_6__GPIO1_6,
 
 	/* USB HOST1 */
 	MX51_PAD_USBH1_CLK__USBH1_CLK,
@@ -238,6 +245,336 @@ static struct flash_platform_data mx51_efika_spi_flash_data = {
 	.type		= "sst25vf032b",
 };
 
+static struct regulator_consumer_supply sw1_consumers[] = {
+	{
+		.supply = "cpu_vcc",
+	}
+};
+
+static struct regulator_consumer_supply vdig_consumers[] = {
+	/* sgtl5000 */
+	REGULATOR_SUPPLY("VDDA", "1-000a"),
+	REGULATOR_SUPPLY("VDDD", "1-000a"),
+};
+
+static struct regulator_consumer_supply vvideo_consumers[] = {
+	/* sgtl5000 */
+	REGULATOR_SUPPLY("VDDIO", "1-000a"),
+};
+
+static struct regulator_consumer_supply vsd_consumers[] = {
+	REGULATOR_SUPPLY("vmmc", "sdhci-esdhc-imx.0"),
+	REGULATOR_SUPPLY("vmmc", "sdhci-esdhc-imx.1"),
+};
+
+static struct regulator_consumer_supply pwgt1_consumer[] = {
+	{
+		.supply = "pwgt1",
+	}
+};
+
+static struct regulator_consumer_supply pwgt2_consumer[] = {
+	{
+		.supply = "pwgt2",
+	}
+};
+
+static struct regulator_consumer_supply coincell_consumer[] = {
+	{
+		.supply = "coincell",
+	}
+};
+
+static struct regulator_init_data sw1_init = {
+	.constraints = {
+		.name = "SW1",
+		.min_uV = 600000,
+		.max_uV = 1375000,
+		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+		.valid_modes_mask = 0,
+		.always_on = 1,
+		.boot_on = 1,
+		.state_mem = {
+			.uV = 850000,
+			.mode = REGULATOR_MODE_NORMAL,
+			.enabled = 1,
+		},
+	},
+	.num_consumer_supplies = ARRAY_SIZE(sw1_consumers),
+	.consumer_supplies = sw1_consumers,
+};
+
+static struct regulator_init_data sw2_init = {
+	.constraints = {
+		.name = "SW2",
+		.min_uV = 900000,
+		.max_uV = 1850000,
+		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+		.always_on = 1,
+		.boot_on = 1,
+		.state_mem = {
+			.uV = 950000,
+			.mode = REGULATOR_MODE_NORMAL,
+			.enabled = 1,
+		},
+	}
+};
+
+static struct regulator_init_data sw3_init = {
+	.constraints = {
+		.name = "SW3",
+		.min_uV = 1100000,
+		.max_uV = 1850000,
+		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+		.always_on = 1,
+		.boot_on = 1,
+	}
+};
+
+static struct regulator_init_data sw4_init = {
+	.constraints = {
+		.name = "SW4",
+		.min_uV = 1100000,
+		.max_uV = 1850000,
+		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+		.always_on = 1,
+		.boot_on = 1,
+	}
+};
+
+static struct regulator_init_data viohi_init = {
+	.constraints = {
+		.name = "VIOHI",
+		.boot_on = 1,
+		.always_on = 1,
+	}
+};
+
+static struct regulator_init_data vusb_init = {
+	.constraints = {
+		.name = "VUSB",
+		.boot_on = 1,
+		.always_on = 1,
+	}
+};
+
+static struct regulator_init_data swbst_init = {
+	.constraints = {
+		.name = "SWBST",
+	}
+};
+
+static struct regulator_init_data vdig_init = {
+	.constraints = {
+		.name = "VDIG",
+		.min_uV = 1050000,
+		.max_uV = 1800000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
+		.boot_on = 1,
+		.always_on = 1,
+	},
+	.num_consumer_supplies = ARRAY_SIZE(vdig_consumers),
+	.consumer_supplies = vdig_consumers,
+};
+
+static struct regulator_init_data vpll_init = {
+	.constraints = {
+		.name = "VPLL",
+		.min_uV = 1050000,
+		.max_uV = 1800000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
+		.boot_on = 1,
+		.always_on = 1,
+	}
+};
+
+static struct regulator_init_data vusb2_init = {
+	.constraints = {
+		.name = "VUSB2",
+		.min_uV = 2400000,
+		.max_uV = 2775000,
+		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+		.boot_on = 1,
+		.always_on = 1,
+	}
+};
+
+static struct regulator_init_data vvideo_init = {
+	.constraints = {
+		.name = "VVIDEO",
+		.min_uV = 2775000,
+		.max_uV = 2775000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
+		.boot_on = 1,
+		.apply_uV = 1,
+	},
+	.num_consumer_supplies = ARRAY_SIZE(vvideo_consumers),
+	.consumer_supplies = vvideo_consumers,
+};
+
+static struct regulator_init_data vaudio_init = {
+	.constraints = {
+		.name = "VAUDIO",
+		.min_uV = 2300000,
+		.max_uV = 3000000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
+		.boot_on = 1,
+	}
+};
+
+static struct regulator_init_data vsd_init = {
+	.constraints = {
+		.name = "VSD",
+		.min_uV = 1800000,
+		.max_uV = 3150000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE,
+		.boot_on = 1,
+	},
+	.num_consumer_supplies = ARRAY_SIZE(vsd_consumers),
+	.consumer_supplies = vsd_consumers,
+};
+
+static struct regulator_init_data vcam_init = {
+	.constraints = {
+		.name = "VCAM",
+		.min_uV = 2500000,
+		.max_uV = 3000000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE |
+			REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
+		.valid_modes_mask = REGULATOR_MODE_FAST | REGULATOR_MODE_NORMAL,
+		.boot_on = 1,
+	}
+};
+
+static struct regulator_init_data vgen1_init = {
+	.constraints = {
+		.name = "VGEN1",
+		.min_uV = 1200000,
+		.max_uV = 3150000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
+		.boot_on = 1,
+		.always_on = 1,
+	}
+};
+
+static struct regulator_init_data vgen2_init = {
+	.constraints = {
+		.name = "VGEN2",
+		.min_uV = 1200000,
+		.max_uV = 3150000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
+		.boot_on = 1,
+		.always_on = 1,
+	}
+};
+
+static struct regulator_init_data vgen3_init = {
+	.constraints = {
+		.name = "VGEN3",
+		.min_uV = 1800000,
+		.max_uV = 2900000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
+		.boot_on = 1,
+		.always_on = 1,
+	}
+};
+
+static struct regulator_init_data gpo1_init = {
+	.constraints = {
+		.name = "GPO1",
+	}
+};
+
+static struct regulator_init_data gpo2_init = {
+	.constraints = {
+		.name = "GPO2",
+	}
+};
+
+static struct regulator_init_data gpo3_init = {
+	.constraints = {
+		.name = "GPO3",
+	}
+};
+
+static struct regulator_init_data gpo4_init = {
+	.constraints = {
+		.name = "GPO4",
+	}
+};
+
+static struct regulator_init_data pwgt1_init = {
+	.constraints = {
+		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+		.boot_on        = 1,
+	},
+	.num_consumer_supplies = ARRAY_SIZE(pwgt1_consumer),
+	.consumer_supplies = pwgt1_consumer,
+};
+
+static struct regulator_init_data pwgt2_init = {
+	.constraints = {
+		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+		.boot_on        = 1,
+	},
+	.num_consumer_supplies = ARRAY_SIZE(pwgt2_consumer),
+	.consumer_supplies = pwgt2_consumer,
+};
+
+static struct regulator_init_data vcoincell_init = {
+	.constraints = {
+		.name = "COINCELL",
+		.min_uV = 3000000,
+		.max_uV = 3000000,
+		.valid_ops_mask =
+			REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies = ARRAY_SIZE(coincell_consumer),
+	.consumer_supplies = coincell_consumer,
+};
+
+static struct mc13xxx_regulator_init_data mx51_efika_regulators[] = {
+	{ .id = MC13892_SW1,		.init_data =  &sw1_init },
+	{ .id = MC13892_SW2,		.init_data =  &sw2_init },
+	{ .id = MC13892_SW3,		.init_data =  &sw3_init },
+	{ .id = MC13892_SW4,		.init_data =  &sw4_init },
+	{ .id = MC13892_SWBST,		.init_data =  &swbst_init },
+	{ .id = MC13892_VIOHI,		.init_data =  &viohi_init },
+	{ .id = MC13892_VPLL,		.init_data =  &vpll_init },
+	{ .id = MC13892_VDIG,		.init_data =  &vdig_init },
+	{ .id = MC13892_VSD,		.init_data =  &vsd_init },
+	{ .id = MC13892_VUSB2,		.init_data =  &vusb2_init },
+	{ .id = MC13892_VVIDEO,		.init_data =  &vvideo_init },
+	{ .id = MC13892_VAUDIO,		.init_data =  &vaudio_init },
+	{ .id = MC13892_VCAM,		.init_data =  &vcam_init },
+	{ .id = MC13892_VGEN1,		.init_data =  &vgen1_init },
+	{ .id = MC13892_VGEN2,		.init_data =  &vgen2_init },
+	{ .id = MC13892_VGEN3,		.init_data =  &vgen3_init },
+	{ .id = MC13892_VUSB,		.init_data =  &vusb_init },
+	{ .id = MC13892_GPO1,		.init_data =  &gpo1_init },
+	{ .id = MC13892_GPO2,		.init_data =  &gpo2_init },
+	{ .id = MC13892_GPO3,		.init_data =  &gpo3_init },
+	{ .id = MC13892_GPO4,		.init_data =  &gpo4_init },
+	{ .id = MC13892_PWGT1SPI,	.init_data = &pwgt1_init },
+	{ .id = MC13892_PWGT2SPI,	.init_data = &pwgt2_init },
+	{ .id = MC13892_VCOINCELL,	.init_data = &vcoincell_init },
+};
+
+static struct mc13xxx_platform_data mx51_efika_mc13892_data = {
+	.flags = MC13XXX_USE_RTC | MC13XXX_USE_REGULATOR,
+	.num_regulators = ARRAY_SIZE(mx51_efika_regulators),
+	.regulators = mx51_efika_regulators,
+};
+
 static struct spi_board_info mx51_efika_spi_board_info[] __initdata = {
 	{
 		.modalias = "m25p80",
@@ -247,6 +584,14 @@ static struct spi_board_info mx51_efika_spi_board_info[] __initdata = {
 		.platform_data = &mx51_efika_spi_flash_data,
 		.irq = -1,
 	},
+	{
+		.modalias = "mc13892",
+		.max_speed_hz = 1000000,
+		.bus_num = 0,
+		.chip_select = 0,
+		.platform_data = &mx51_efika_mc13892_data,
+		.irq = gpio_to_irq(EFIKAMX_PMIC),
+	},
 };
 
 static int mx51_efika_spi_cs[] = {
@@ -267,6 +612,18 @@ void __init efika_board_common_init(void)
 	mx51_efika_usb();
 	imx51_add_sdhci_esdhc_imx(0, NULL);
 
+	/* FIXME: comes from original code. check this. */
+	if (mx51_revision() < IMX_CHIP_REVISION_2_0)
+		sw2_init.constraints.state_mem.uV = 1100000;
+	else if (mx51_revision() == IMX_CHIP_REVISION_2_0) {
+		sw2_init.constraints.state_mem.uV = 1250000;
+		sw1_init.constraints.state_mem.uV = 1000000;
+	}
+	if (machine_is_mx51_efikasb())
+		vgen1_init.constraints.max_uV = 1200000;
+
+	gpio_request(EFIKAMX_PMIC, "pmic irq");
+	gpio_direction_input(EFIKAMX_PMIC);
 	spi_register_board_info(mx51_efika_spi_board_info,
 		ARRAY_SIZE(mx51_efika_spi_board_info));
 	imx51_add_ecspi(0, &mx51_efika_spi_pdata);