arch/arm/mach-msm/board-8064-gpiomux.c

/* Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/bootmem.h>
#include <asm/mach-types.h>
#include <asm/mach/mmc.h>
#include <mach/msm_bus_board.h>
#include <mach/board.h>
#include <mach/gpio.h>
#include <mach/gpiomux.h>
#include "devices.h"
#include "board-8064.h"

#if defined(CONFIG_KS8851) || defined(CONFIG_KS8851_MODULE)
static struct gpiomux_setting gpio_eth_config = {
	.pull = GPIOMUX_PULL_NONE,
	.drv = GPIOMUX_DRV_8MA,
	.func = GPIOMUX_FUNC_GPIO,
};

/* The SPI configurations apply to GSBI 5*/
static struct gpiomux_setting gpio_spi_config = {
	.func = GPIOMUX_FUNC_2,
	.drv = GPIOMUX_DRV_12MA,
	.pull = GPIOMUX_PULL_NONE,
};

/* The SPI configurations apply to GSBI 5 chip select 2*/
static struct gpiomux_setting gpio_spi_cs2_config = {
	.func = GPIOMUX_FUNC_3,
	.drv = GPIOMUX_DRV_12MA,
	.pull = GPIOMUX_PULL_NONE,
};

/* Chip selects for SPI clients */
static struct gpiomux_setting gpio_spi_cs_config = {
	.func = GPIOMUX_FUNC_GPIO,
	.drv = GPIOMUX_DRV_12MA,
	.pull = GPIOMUX_PULL_UP,
};

struct msm_gpiomux_config apq8064_ethernet_configs[] = {
	{
		.gpio = 43,
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_eth_config,
			[GPIOMUX_ACTIVE] = &gpio_eth_config,
		}
	},
};
#endif

static struct gpiomux_setting cdc_mclk = {
	.func = GPIOMUX_FUNC_1,
	.drv = GPIOMUX_DRV_8MA,
	.pull = GPIOMUX_PULL_NONE,
};

static struct gpiomux_setting audio_auxpcm[] = {
	/* Suspended state */
	{
		.func = GPIOMUX_FUNC_GPIO,
		.drv = GPIOMUX_DRV_2MA,
		.pull = GPIOMUX_PULL_NONE,
	},
	/* Active state */
	{
		.func = GPIOMUX_FUNC_1,
		.drv = GPIOMUX_DRV_2MA,
		.pull = GPIOMUX_PULL_NONE,
	},
};

static struct gpiomux_setting slimbus = {
	.func = GPIOMUX_FUNC_1,
	.drv = GPIOMUX_DRV_8MA,
	.pull = GPIOMUX_PULL_KEEPER,
};

static struct gpiomux_setting gsbi1_uart_config = {
	.func = GPIOMUX_FUNC_1,
	.drv = GPIOMUX_DRV_16MA,
	.pull = GPIOMUX_PULL_NONE,
};

static struct gpiomux_setting ext_regulator_config = {
	.func = GPIOMUX_FUNC_GPIO,
	.drv = GPIOMUX_DRV_8MA,
	.pull = GPIOMUX_PULL_NONE,
	.dir = GPIOMUX_OUT_LOW,
};

static struct msm_gpiomux_config apq8064_gsbi_configs[] __initdata = {
	{
		.gpio      = 18,		/* GSBI1 UART TX */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gsbi1_uart_config,
		},
	},
	{
		.gpio      = 19,		/* GSBI1 UART RX */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gsbi1_uart_config,
		},
	},
#if defined(CONFIG_KS8851) || defined(CONFIG_KS8851_MODULE)
	{
		.gpio      = 51,		/* GSBI5 QUP SPI_DATA_MOSI */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_spi_config,
		},
	},
	{
		.gpio      = 52,		/* GSBI5 QUP SPI_DATA_MISO */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_spi_config,
		},
	},
	{
		.gpio      = 53,		/* Funny CS0 */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_spi_config,
		},
	},
	{
		.gpio      = 31,		/* GSBI5 QUP SPI_CS2_N */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_spi_cs2_config,
		},
	},
	{
		.gpio      = 54,		/* GSBI5 QUP SPI_CLK */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_spi_config,
		},
	},
#endif
	{
		.gpio      = 30,		/* FP CS */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_spi_cs_config,
		},
	},
	{
		.gpio      = 32,		/* EPM CS */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_spi_cs_config,
		},
	},
	{
		.gpio      = 53,		/* NOR CS */
		.settings = {
			[GPIOMUX_SUSPENDED] = &gpio_spi_cs_config,
		},
	},
};

static struct msm_gpiomux_config apq8064_slimbus_config[] __initdata = {
	{
		.gpio   = 40,           /* slimbus clk */
		.settings = {
			[GPIOMUX_SUSPENDED] = &slimbus,
		},
	},
	{
		.gpio   = 41,           /* slimbus data */
		.settings = {
			[GPIOMUX_SUSPENDED] = &slimbus,
		},
	},
};

static struct msm_gpiomux_config apq8064_audio_codec_configs[] __initdata = {
	{
		.gpio = 39,
		.settings = {
			[GPIOMUX_SUSPENDED] = &cdc_mclk,
		},
	},
};

static struct msm_gpiomux_config apq8064_audio_auxpcm_configs[] __initdata = {
	{
		.gpio = 43,
		.settings = {
			[GPIOMUX_SUSPENDED] = &audio_auxpcm[0],
			[GPIOMUX_ACTIVE] = &audio_auxpcm[1],
		},
	},
	{
		.gpio = 44,
		.settings = {
			[GPIOMUX_SUSPENDED] = &audio_auxpcm[0],
			[GPIOMUX_ACTIVE] = &audio_auxpcm[1],
		},
	},
	{
		.gpio = 45,
		.settings = {
			[GPIOMUX_SUSPENDED] = &audio_auxpcm[0],
			[GPIOMUX_ACTIVE] = &audio_auxpcm[1],
		},
	},
	{
		.gpio = 46,
		.settings = {
			[GPIOMUX_SUSPENDED] = &audio_auxpcm[0],
			[GPIOMUX_ACTIVE] = &audio_auxpcm[1],
		},
	},
};

/* External 3.3 V regulator enable */
static struct msm_gpiomux_config apq8064_ext_regulator_configs[] __initdata = {
	{
		.gpio = APQ8064_EXT_3P3V_REG_EN_GPIO,
		.settings = {
			[GPIOMUX_SUSPENDED] = &ext_regulator_config,
		},
	},
};

void __init apq8064_init_gpiomux(void)
{
	int rc;

	rc = msm_gpiomux_init(NR_GPIO_IRQS);
	if (rc) {
		pr_err(KERN_ERR "msm_gpiomux_init failed %d\n", rc);
		return;
	}

#if defined(CONFIG_KS8851) || defined(CONFIG_KS8851_MODULE)
	msm_gpiomux_install(apq8064_ethernet_configs,
			ARRAY_SIZE(apq8064_ethernet_configs));
#endif

	msm_gpiomux_install(apq8064_gsbi_configs,
			ARRAY_SIZE(apq8064_gsbi_configs));

	msm_gpiomux_install(apq8064_slimbus_config,
			ARRAY_SIZE(apq8064_slimbus_config));

	msm_gpiomux_install(apq8064_audio_codec_configs,
			ARRAY_SIZE(apq8064_audio_codec_configs));

	msm_gpiomux_install(apq8064_audio_auxpcm_configs,
			ARRAY_SIZE(apq8064_audio_auxpcm_configs));

	msm_gpiomux_install(apq8064_ext_regulator_configs,
			ARRAY_SIZE(apq8064_ext_regulator_configs));
}