[mirror_ubuntu-artful-kernel.git] / arch / arm / mach-ep93xx / vision_ep9307.c

/*
 * arch/arm/mach-ep93xx/vision_ep9307.c
 * Vision Engraving Systems EP9307 SoM support.
 *
 * Copyright (C) 2008-2011 Vision Engraving Systems
 * H Hartley Sweeten <hsweeten@visionengravers.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/fb.h>
#include <linux/io.h>
#include <linux/mtd/partitions.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/platform_data/pca953x.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/spi/mmc_spi.h>
#include <linux/mmc/host.h>

#include <sound/cs4271.h>

#include <mach/hardware.h>
#include <linux/platform_data/video-ep93xx.h>
#include <linux/platform_data/spi-ep93xx.h>
#include <mach/gpio-ep93xx.h>

#include <asm/mach-types.h>
#include <asm/mach/map.h>
#include <asm/mach/arch.h>

#include "soc.h"

/*************************************************************************
 * Static I/O mappings for the FPGA
 *************************************************************************/
#define VISION_PHYS_BASE	EP93XX_CS7_PHYS_BASE
#define VISION_VIRT_BASE	0xfebff000

static struct map_desc vision_io_desc[] __initdata = {
	{
		.virtual	= VISION_VIRT_BASE,
		.pfn		= __phys_to_pfn(VISION_PHYS_BASE),
		.length		= SZ_4K,
		.type		= MT_DEVICE,
	},
};

static void __init vision_map_io(void)
{
	ep93xx_map_io();

	iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc));
}

/*************************************************************************
 * Ethernet
 *************************************************************************/
static struct ep93xx_eth_data vision_eth_data __initdata = {
	.phy_id		= 1,
};

/*************************************************************************
 * Framebuffer
 *************************************************************************/
#define VISION_LCD_ENABLE	EP93XX_GPIO_LINE_EGPIO1

static int vision_lcd_setup(struct platform_device *pdev)
{
	int err;

	err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH,
				dev_name(&pdev->dev));
	if (err)
		return err;

	ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS |
				 EP93XX_SYSCON_DEVCFG_RASONP3 |
				 EP93XX_SYSCON_DEVCFG_EXVC);

	return 0;
}

static void vision_lcd_teardown(struct platform_device *pdev)
{
	gpio_free(VISION_LCD_ENABLE);
}

static void vision_lcd_blank(int blank_mode, struct fb_info *info)
{
	if (blank_mode)
		gpio_set_value(VISION_LCD_ENABLE, 0);
	else
		gpio_set_value(VISION_LCD_ENABLE, 1);
}

static struct ep93xxfb_mach_info ep93xxfb_info __initdata = {
	.flags		= EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
	.setup		= vision_lcd_setup,
	.teardown	= vision_lcd_teardown,
	.blank		= vision_lcd_blank,
};


/*************************************************************************
 * GPIO Expanders
 *************************************************************************/
#define PCA9539_74_GPIO_BASE	(EP93XX_GPIO_LINE_MAX + 1)
#define PCA9539_75_GPIO_BASE	(PCA9539_74_GPIO_BASE + 16)
#define PCA9539_76_GPIO_BASE	(PCA9539_75_GPIO_BASE + 16)
#define PCA9539_77_GPIO_BASE	(PCA9539_76_GPIO_BASE + 16)

static struct pca953x_platform_data pca953x_74_gpio_data = {
	.gpio_base	= PCA9539_74_GPIO_BASE,
	.irq_base	= EP93XX_BOARD_IRQ(0),
};

static struct pca953x_platform_data pca953x_75_gpio_data = {
	.gpio_base	= PCA9539_75_GPIO_BASE,
	.irq_base	= -1,
};

static struct pca953x_platform_data pca953x_76_gpio_data = {
	.gpio_base	= PCA9539_76_GPIO_BASE,
	.irq_base	= -1,
};

static struct pca953x_platform_data pca953x_77_gpio_data = {
	.gpio_base	= PCA9539_77_GPIO_BASE,
	.irq_base	= -1,
};

/*************************************************************************
 * I2C Bus
 *************************************************************************/
static struct i2c_gpio_platform_data vision_i2c_gpio_data __initdata = {
	.sda_pin		= EP93XX_GPIO_LINE_EEDAT,
	.scl_pin		= EP93XX_GPIO_LINE_EECLK,
};

static struct i2c_board_info vision_i2c_info[] __initdata = {
	{
		I2C_BOARD_INFO("isl1208", 0x6f),
		.irq		= IRQ_EP93XX_EXT1,
	}, {
		I2C_BOARD_INFO("pca9539", 0x74),
		.platform_data	= &pca953x_74_gpio_data,
	}, {
		I2C_BOARD_INFO("pca9539", 0x75),
		.platform_data	= &pca953x_75_gpio_data,
	}, {
		I2C_BOARD_INFO("pca9539", 0x76),
		.platform_data	= &pca953x_76_gpio_data,
	}, {
		I2C_BOARD_INFO("pca9539", 0x77),
		.platform_data	= &pca953x_77_gpio_data,
	},
};

/*************************************************************************
 * SPI CS4271 Audio Codec
 *************************************************************************/
static struct cs4271_platform_data vision_cs4271_data = {
	.gpio_nreset	= EP93XX_GPIO_LINE_H(2),
};

/*************************************************************************
 * SPI Flash
 *************************************************************************/
static struct mtd_partition vision_spi_flash_partitions[] = {
	{
		.name	= "SPI bootstrap",
		.offset	= 0,
		.size	= SZ_4K,
	}, {
		.name	= "Bootstrap config",
		.offset	= MTDPART_OFS_APPEND,
		.size	= SZ_4K,
	}, {
		.name	= "System config",
		.offset	= MTDPART_OFS_APPEND,
		.size	= MTDPART_SIZ_FULL,
	},
};

static struct flash_platform_data vision_spi_flash_data = {
	.name		= "SPI Flash",
	.parts		= vision_spi_flash_partitions,
	.nr_parts	= ARRAY_SIZE(vision_spi_flash_partitions),
};

/*************************************************************************
 * SPI SD/MMC host
 *************************************************************************/
static struct mmc_spi_platform_data vision_spi_mmc_data = {
	.detect_delay	= 100,
	.powerup_msecs	= 100,
	.ocr_mask	= MMC_VDD_32_33 | MMC_VDD_33_34,
	.flags		= MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO,
	.cd_gpio	= EP93XX_GPIO_LINE_EGPIO15,
	.cd_debounce	= 1,
	.ro_gpio	= EP93XX_GPIO_LINE_F(0),
	.caps2		= MMC_CAP2_RO_ACTIVE_HIGH,
};

/*************************************************************************
 * SPI Bus
 *************************************************************************/
static struct spi_board_info vision_spi_board_info[] __initdata = {
	{
		.modalias		= "cs4271",
		.platform_data		= &vision_cs4271_data,
		.max_speed_hz		= 6000000,
		.bus_num		= 0,
		.chip_select		= 0,
		.mode			= SPI_MODE_3,
	}, {
		.modalias		= "sst25l",
		.platform_data		= &vision_spi_flash_data,
		.max_speed_hz		= 20000000,
		.bus_num		= 0,
		.chip_select		= 1,
		.mode			= SPI_MODE_3,
	}, {
		.modalias		= "mmc_spi",
		.platform_data		= &vision_spi_mmc_data,
		.max_speed_hz		= 20000000,
		.bus_num		= 0,
		.chip_select		= 2,
		.mode			= SPI_MODE_3,
	},
};

static int vision_spi_chipselects[] __initdata = {
	EP93XX_GPIO_LINE_EGPIO6,
	EP93XX_GPIO_LINE_EGPIO7,
	EP93XX_GPIO_LINE_G(2),
};

static struct ep93xx_spi_info vision_spi_master __initdata = {
	.chipselect	= vision_spi_chipselects,
	.num_chipselect	= ARRAY_SIZE(vision_spi_chipselects),
	.use_dma	= 1,
};

/*************************************************************************
 * I2S Audio
 *************************************************************************/
static struct platform_device vision_audio_device = {
	.name		= "edb93xx-audio",
	.id		= -1,
};

static void __init vision_register_i2s(void)
{
	ep93xx_register_i2s();
	platform_device_register(&vision_audio_device);
}

/*************************************************************************
 * Machine Initialization
 *************************************************************************/
static void __init vision_init_machine(void)
{
	ep93xx_init_devices();
	ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M);
	ep93xx_register_eth(&vision_eth_data, 1);
	ep93xx_register_fb(&ep93xxfb_info);
	ep93xx_register_pwm(1, 0);

	/*
	 * Request the gpio expander's interrupt gpio line now to prevent
	 * the kernel from doing a WARN in gpiolib:gpio_ensure_requested().
	 */
	if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN,
				"pca9539:74"))
		pr_warn("cannot request interrupt gpio for pca9539:74\n");

	vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7));

	ep93xx_register_i2c(&vision_i2c_gpio_data, vision_i2c_info,
				ARRAY_SIZE(vision_i2c_info));
	ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
				ARRAY_SIZE(vision_spi_board_info));
	vision_register_i2s();
}

MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")
	/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
	.atag_offset	= 0x100,
	.map_io		= vision_map_io,
	.init_irq	= ep93xx_init_irq,
	.init_time	= ep93xx_timer_init,
	.init_machine	= vision_init_machine,
	.init_late	= ep93xx_init_late,
	.restart	= ep93xx_restart,
MACHINE_END
Commit	Line	Data
1cb17e2d HS	1	/*
	2	* arch/arm/mach-ep93xx/vision_ep9307.c
	3	* Vision Engraving Systems EP9307 SoM support.
	4	*
	5	* Copyright (C) 2008-2011 Vision Engraving Systems
	6	* H Hartley Sweeten <hsweeten@visionengravers.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or (at
	11	* your option) any later version.
	12	*/
	13
	14	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	15
	16	#include <linux/kernel.h>
	17	#include <linux/init.h>
	18	#include <linux/platform_device.h>
	19	#include <linux/irq.h>
	20	#include <linux/gpio.h>
	21	#include <linux/fb.h>
	22	#include <linux/io.h>
	23	#include <linux/mtd/partitions.h>
	24	#include <linux/i2c.h>
	25	#include <linux/i2c-gpio.h>
5877457a	26	#include <linux/platform_data/pca953x.h>
1cb17e2d HS	27	#include <linux/spi/spi.h>
	28	#include <linux/spi/flash.h>
	29	#include <linux/spi/mmc_spi.h>
	30	#include <linux/mmc/host.h>
	31
b07b4e29 HS	32	#include <sound/cs4271.h>
b07b4e29 HS	33
1cb17e2d	34	#include <mach/hardware.h>
a3b29245 AB	35	#include <linux/platform_data/video-ep93xx.h>
a3b29245 AB	36	#include <linux/platform_data/spi-ep93xx.h>
e9c6c5df	37	#include <mach/gpio-ep93xx.h>
1cb17e2d HS	38
	39	#include <asm/mach-types.h>
	40	#include <asm/mach/map.h>
	41	#include <asm/mach/arch.h>
	42
258249ec RM	43	#include "soc.h"
258249ec RM	44
1cb17e2d HS	45	/*************************************************************************
	46	* Static I/O mappings for the FPGA
	47	*************************************************************************/
	48	#define VISION_PHYS_BASE EP93XX_CS7_PHYS_BASE
	49	#define VISION_VIRT_BASE 0xfebff000
	50
	51	static struct map_desc vision_io_desc[] __initdata = {
	52	{
	53	.virtual = VISION_VIRT_BASE,
	54	.pfn = __phys_to_pfn(VISION_PHYS_BASE),
	55	.length = SZ_4K,
	56	.type = MT_DEVICE,
	57	},
	58	};
	59
	60	static void __init vision_map_io(void)
	61	{
	62	ep93xx_map_io();
	63
	64	iotable_init(vision_io_desc, ARRAY_SIZE(vision_io_desc));
	65	}
	66
	67	/*************************************************************************
	68	* Ethernet
	69	*************************************************************************/
	70	static struct ep93xx_eth_data vision_eth_data __initdata = {
	71	.phy_id = 1,
	72	};
	73
	74	/*************************************************************************
	75	* Framebuffer
	76	*************************************************************************/
	77	#define VISION_LCD_ENABLE EP93XX_GPIO_LINE_EGPIO1
	78
	79	static int vision_lcd_setup(struct platform_device *pdev)
	80	{
	81	int err;
	82
	83	err = gpio_request_one(VISION_LCD_ENABLE, GPIOF_INIT_HIGH,
	84	dev_name(&pdev->dev));
	85	if (err)
	86	return err;
	87
	88	ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_RAS \|
	89	EP93XX_SYSCON_DEVCFG_RASONP3 \|
	90	EP93XX_SYSCON_DEVCFG_EXVC);
	91
	92	return 0;
	93	}
	94
	95	static void vision_lcd_teardown(struct platform_device *pdev)
	96	{
	97	gpio_free(VISION_LCD_ENABLE);
	98	}
	99
	100	static void vision_lcd_blank(int blank_mode, struct fb_info *info)
	101	{
	102	if (blank_mode)
	103	gpio_set_value(VISION_LCD_ENABLE, 0);
	104	else
	105	gpio_set_value(VISION_LCD_ENABLE, 1);
	106	}
	107
	108	static struct ep93xxfb_mach_info ep93xxfb_info __initdata = {
1cb17e2d HS	109	.flags = EP93XXFB_USE_SDCSN0 \| EP93XXFB_PCLK_FALLING,
	110	.setup = vision_lcd_setup,
	111	.teardown = vision_lcd_teardown,
	112	.blank = vision_lcd_blank,
	113	};
	114
	115
	116	/*************************************************************************
	117	* GPIO Expanders
	118	*************************************************************************/
	119	#define PCA9539_74_GPIO_BASE (EP93XX_GPIO_LINE_MAX + 1)
	120	#define PCA9539_75_GPIO_BASE (PCA9539_74_GPIO_BASE + 16)
	121	#define PCA9539_76_GPIO_BASE (PCA9539_75_GPIO_BASE + 16)
	122	#define PCA9539_77_GPIO_BASE (PCA9539_76_GPIO_BASE + 16)
	123
	124	static struct pca953x_platform_data pca953x_74_gpio_data = {
	125	.gpio_base = PCA9539_74_GPIO_BASE,
	126	.irq_base = EP93XX_BOARD_IRQ(0),
	127	};
	128
	129	static struct pca953x_platform_data pca953x_75_gpio_data = {
	130	.gpio_base = PCA9539_75_GPIO_BASE,
	131	.irq_base = -1,
	132	};
	133
	134	static struct pca953x_platform_data pca953x_76_gpio_data = {
	135	.gpio_base = PCA9539_76_GPIO_BASE,
	136	.irq_base = -1,
	137	};
	138
	139	static struct pca953x_platform_data pca953x_77_gpio_data = {
	140	.gpio_base = PCA9539_77_GPIO_BASE,
	141	.irq_base = -1,
	142	};
	143
	144	/*************************************************************************
	145	* I2C Bus
	146	*************************************************************************/
	147	static struct i2c_gpio_platform_data vision_i2c_gpio_data __initdata = {
	148	.sda_pin = EP93XX_GPIO_LINE_EEDAT,
	149	.scl_pin = EP93XX_GPIO_LINE_EECLK,
	150	};
	151
	152	static struct i2c_board_info vision_i2c_info[] __initdata = {
	153	{
	154	I2C_BOARD_INFO("isl1208", 0x6f),
	155	.irq = IRQ_EP93XX_EXT1,
	156	}, {
	157	I2C_BOARD_INFO("pca9539", 0x74),
	158	.platform_data = &pca953x_74_gpio_data,
1cb17e2d HS	159	}, {
	160	I2C_BOARD_INFO("pca9539", 0x75),
	161	.platform_data = &pca953x_75_gpio_data,
	162	}, {
	163	I2C_BOARD_INFO("pca9539", 0x76),
	164	.platform_data = &pca953x_76_gpio_data,
	165	}, {
	166	I2C_BOARD_INFO("pca9539", 0x77),
	167	.platform_data = &pca953x_77_gpio_data,
	168	},
	169	};
	170
b07b4e29 HS	171	/*************************************************************************
	172	* SPI CS4271 Audio Codec
	173	*************************************************************************/
	174	static struct cs4271_platform_data vision_cs4271_data = {
	175	.gpio_nreset = EP93XX_GPIO_LINE_H(2),
	176	};
	177
1cb17e2d HS	178	/*************************************************************************
	179	* SPI Flash
	180	*************************************************************************/
1cb17e2d HS	181	static struct mtd_partition vision_spi_flash_partitions[] = {
	182	{
	183	.name = "SPI bootstrap",
	184	.offset = 0,
	185	.size = SZ_4K,
	186	}, {
	187	.name = "Bootstrap config",
	188	.offset = MTDPART_OFS_APPEND,
	189	.size = SZ_4K,
	190	}, {
	191	.name = "System config",
	192	.offset = MTDPART_OFS_APPEND,
	193	.size = MTDPART_SIZ_FULL,
	194	},
	195	};
	196
	197	static struct flash_platform_data vision_spi_flash_data = {
	198	.name = "SPI Flash",
	199	.parts = vision_spi_flash_partitions,
	200	.nr_parts = ARRAY_SIZE(vision_spi_flash_partitions),
	201	};
	202
1cb17e2d HS	203	/*************************************************************************
	204	* SPI SD/MMC host
	205	*************************************************************************/
1cb17e2d	206	static struct mmc_spi_platform_data vision_spi_mmc_data = {
1cb17e2d HS	207	.detect_delay = 100,
	208	.powerup_msecs = 100,
	209	.ocr_mask = MMC_VDD_32_33 \| MMC_VDD_33_34,
2a4f6b1d	210	.flags = MMC_SPI_USE_CD_GPIO \| MMC_SPI_USE_RO_GPIO,
55f0cd3f	211	.cd_gpio = EP93XX_GPIO_LINE_EGPIO15,
2a4f6b1d	212	.cd_debounce = 1,
55f0cd3f	213	.ro_gpio = EP93XX_GPIO_LINE_F(0),
2a4f6b1d	214	.caps2 = MMC_CAP2_RO_ACTIVE_HIGH,
1cb17e2d HS	215	};
1cb17e2d HS	216
1cb17e2d HS	217	/*************************************************************************
	218	* SPI Bus
	219	*************************************************************************/
	220	static struct spi_board_info vision_spi_board_info[] __initdata = {
	221	{
b07b4e29 HS	222	.modalias = "cs4271",
b07b4e29 HS	223	.platform_data = &vision_cs4271_data,
b07b4e29 HS	224	.max_speed_hz = 6000000,
	225	.bus_num = 0,
	226	.chip_select = 0,
	227	.mode = SPI_MODE_3,
	228	}, {
1cb17e2d HS	229	.modalias = "sst25l",
1cb17e2d HS	230	.platform_data = &vision_spi_flash_data,
1cb17e2d HS	231	.max_speed_hz = 20000000,
1cb17e2d HS	232	.bus_num = 0,
b07b4e29	233	.chip_select = 1,
1cb17e2d HS	234	.mode = SPI_MODE_3,
	235	}, {
	236	.modalias = "mmc_spi",
	237	.platform_data = &vision_spi_mmc_data,
1cb17e2d HS	238	.max_speed_hz = 20000000,
1cb17e2d HS	239	.bus_num = 0,
b07b4e29	240	.chip_select = 2,
1cb17e2d HS	241	.mode = SPI_MODE_3,
	242	},
	243	};
	244
55f0cd3f HS	245	static int vision_spi_chipselects[] __initdata = {
	246	EP93XX_GPIO_LINE_EGPIO6,
	247	EP93XX_GPIO_LINE_EGPIO7,
	248	EP93XX_GPIO_LINE_G(2),
	249	};
	250
1cb17e2d	251	static struct ep93xx_spi_info vision_spi_master __initdata = {
55f0cd3f HS	252	.chipselect = vision_spi_chipselects,
55f0cd3f HS	253	.num_chipselect = ARRAY_SIZE(vision_spi_chipselects),
25105231	254	.use_dma = 1,
1cb17e2d HS	255	};
1cb17e2d HS	256
b07b4e29 HS	257	/*************************************************************************
	258	* I2S Audio
	259	*************************************************************************/
	260	static struct platform_device vision_audio_device = {
	261	.name = "edb93xx-audio",
	262	.id = -1,
	263	};
	264
	265	static void __init vision_register_i2s(void)
	266	{
	267	ep93xx_register_i2s();
	268	platform_device_register(&vision_audio_device);
	269	}
	270
1cb17e2d HS	271	/*************************************************************************
	272	* Machine Initialization
	273	*************************************************************************/
	274	static void __init vision_init_machine(void)
	275	{
	276	ep93xx_init_devices();
	277	ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_64M);
	278	ep93xx_register_eth(&vision_eth_data, 1);
	279	ep93xx_register_fb(&ep93xxfb_info);
	280	ep93xx_register_pwm(1, 0);
	281
	282	/*
	283	* Request the gpio expander's interrupt gpio line now to prevent
	284	* the kernel from doing a WARN in gpiolib:gpio_ensure_requested().
	285	*/
	286	if (gpio_request_one(EP93XX_GPIO_LINE_F(7), GPIOF_DIR_IN,
	287	"pca9539:74"))
	288	pr_warn("cannot request interrupt gpio for pca9539:74\n");
	289
e9c6c5df HS	290	vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7));
e9c6c5df HS	291
1cb17e2d HS	292	ep93xx_register_i2c(&vision_i2c_gpio_data, vision_i2c_info,
	293	ARRAY_SIZE(vision_i2c_info));
	294	ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
	295	ARRAY_SIZE(vision_spi_board_info));
b07b4e29	296	vision_register_i2s();
1cb17e2d HS	297	}
	298
	299	MACHINE_START(VISION_EP9307, "Vision Engraving Systems EP9307")
	300	/* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
a7fadac1	301	.atag_offset = 0x100,
1cb17e2d HS	302	.map_io = vision_map_io,
1cb17e2d HS	303	.init_irq = ep93xx_init_irq,
6bb27d73	304	.init_time = ep93xx_timer_init,
1cb17e2d	305	.init_machine = vision_init_machine,
c914283f	306	.init_late = ep93xx_init_late,
3275166e	307	.restart = ep93xx_restart,
1cb17e2d	308	MACHINE_END