mach-mx31_3ds: Add support for the MMC slot of the personality board (0ce88b34) · Commits · e / devices / android_kernel_oneplus_sm8150

arch/arm/mach-mx3/mach-mx31_3ds.c

+99 −0

Original line number	Original line	Diff line number	Diff line
	@@ -35,6 +35,7 @@
	#include <mach/iomux-mx3.h>		#include <mach/iomux-mx3.h>
	#include <mach/3ds_debugboard.h>		#include <mach/3ds_debugboard.h>
	#include <mach/ulpi.h>		#include <mach/ulpi.h>
			#include <mach/mmc.h>

	#include "devices-imx31.h"		#include "devices-imx31.h"
	#include "devices.h"		#include "devices.h"
	@@ -99,6 +100,85 @@ static int mx31_3ds_pins[] = {
	/* I2C1 */		/* I2C1 */
	MX31_PIN_I2C_CLK__I2C1_SCL,		MX31_PIN_I2C_CLK__I2C1_SCL,
	MX31_PIN_I2C_DAT__I2C1_SDA,		MX31_PIN_I2C_DAT__I2C1_SDA,
			/* SDHC1 */
			MX31_PIN_SD1_DATA3__SD1_DATA3,
			MX31_PIN_SD1_DATA2__SD1_DATA2,
			MX31_PIN_SD1_DATA1__SD1_DATA1,
			MX31_PIN_SD1_DATA0__SD1_DATA0,
			MX31_PIN_SD1_CLK__SD1_CLK,
			MX31_PIN_SD1_CMD__SD1_CMD,
			MX31_PIN_GPIO3_1__GPIO3_1, /* Card detect */
			MX31_PIN_GPIO3_0__GPIO3_0, /* OE */
			};

			/*
			* Support for SD card slot in personality board
			*/
			#define MX31_3DS_GPIO_SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
			#define MX31_3DS_GPIO_SDHC1_BE IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)

			static struct gpio mx31_3ds_sdhc1_gpios[] = {
			{ MX31_3DS_GPIO_SDHC1_CD, GPIOF_IN, "sdhc1-card-detect" },
			{ MX31_3DS_GPIO_SDHC1_BE, GPIOF_OUT_INIT_LOW, "sdhc1-bus-en" },
			};

			static int mx31_3ds_sdhc1_init(struct device *dev,
			irq_handler_t detect_irq,
			void *data)
			{
			int ret;

			ret = gpio_request_array(mx31_3ds_sdhc1_gpios,
			ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
			if (ret) {
			pr_warning("Unable to request the SD/MMC GPIOs.\n");
			return ret;
			}

			ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO3_1),
			detect_irq, IRQF_DISABLED \|
			IRQF_TRIGGER_FALLING \| IRQF_TRIGGER_RISING,
			"sdhc1-detect", data);
			if (ret) {
			pr_warning("Unable to request the SD/MMC card-detect IRQ.\n");
			goto gpio_free;
			}

			return 0;

			gpio_free:
			gpio_free_array(mx31_3ds_sdhc1_gpios,
			ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
			return ret;
			}

			static void mx31_3ds_sdhc1_exit(struct device dev, void data)
			{
			free_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO3_1), data);
			gpio_free_array(mx31_3ds_sdhc1_gpios,
			ARRAY_SIZE(mx31_3ds_sdhc1_gpios));
			}

			static void mx31_3ds_sdhc1_setpower(struct device *dev, unsigned int vdd)
			{
			/*
			* While the voltage stuff is done by the driver, activate the
			* Buffer Enable Pin only if there is a card in slot to fix the card
			* voltage issue caused by bi-directional chip TXB0108 on 3Stack.
			* Done here because at this stage we have for sure a debounced value
			* of the presence of the card, showed by the value of vdd.
			* 7 == ilog2(MMC_VDD_165_195)
			*/
			if (vdd > 7)
			gpio_set_value(MX31_3DS_GPIO_SDHC1_BE, 1);
			else
			gpio_set_value(MX31_3DS_GPIO_SDHC1_BE, 0);
			}

			static struct imxmmc_platform_data sdhc1_pdata = {
			.init = mx31_3ds_sdhc1_init,
			.exit = mx31_3ds_sdhc1_exit,
			.setpower = mx31_3ds_sdhc1_setpower,
	};		};

	/*		/*
	@@ -137,6 +217,21 @@ static struct regulator_init_data gpo_init = {
	}		}
	};		};

			static struct regulator_consumer_supply vmmc2_consumers[] = {
			REGULATOR_SUPPLY("vmmc", "mxc-mmc.0"),
			};

			static struct regulator_init_data vmmc2_init = {
			.constraints = {
			.min_uV = 3000000,
			.max_uV = 3000000,
			.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \|
			REGULATOR_CHANGE_STATUS,
			},
			.num_consumer_supplies = ARRAY_SIZE(vmmc2_consumers),
			.consumer_supplies = vmmc2_consumers,
			};

	static struct mc13xxx_regulator_init_data mx31_3ds_regulators[] = {		static struct mc13xxx_regulator_init_data mx31_3ds_regulators[] = {
	{		{
	.id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */		.id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */
	@@ -151,6 +246,9 @@ static struct mc13xxx_regulator_init_data mx31_3ds_regulators[] = {
	}, {		}, {
	.id = MC13783_REG_GPO3, /* Turn on 3.3V */		.id = MC13783_REG_GPO3, /* Turn on 3.3V */
	.init_data = &gpo_init,		.init_data = &gpo_init,
			}, {
			.id = MC13783_REG_VMMC2, /* Power MMC/SD, WiFi/Bluetooth. */
			.init_data = &vmmc2_init,
	},		},
	};		};

	@@ -362,6 +460,7 @@ static void __init mx31_3ds_init(void)
	"devices on the debug board are unusable.\n");		"devices on the debug board are unusable.\n");
	imx31_add_imx2_wdt(NULL);		imx31_add_imx2_wdt(NULL);
	imx31_add_imx_i2c0(&mx31_3ds_i2c0_data);		imx31_add_imx_i2c0(&mx31_3ds_i2c0_data);
			imx31_add_mxc_mmc(0, &sdhc1_pdata);
	}		}

	static void __init mx31_3ds_timer_init(void)		static void __init mx31_3ds_timer_init(void)