| /* |
| * board-overo.c (Gumstix Overo) |
| * |
| * Initial code: Steve Sakoman <steve@sakoman.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| * 02110-1301 USA |
| * |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/delay.h> |
| #include <linux/err.h> |
| #include <linux/init.h> |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| #include <linux/platform_device.h> |
| #include <linux/i2c/twl.h> |
| #include <linux/regulator/machine.h> |
| |
| #include <linux/mtd/mtd.h> |
| #include <linux/mtd/nand.h> |
| #include <linux/mtd/partitions.h> |
| #include <linux/mmc/host.h> |
| |
| #include <asm/mach-types.h> |
| #include <asm/mach/arch.h> |
| #include <asm/mach/flash.h> |
| #include <asm/mach/map.h> |
| |
| #include <plat/board.h> |
| #include <plat/common.h> |
| #include <mach/gpio.h> |
| #include <plat/gpmc.h> |
| #include <mach/hardware.h> |
| #include <plat/nand.h> |
| #include <plat/usb.h> |
| |
| #include "mux.h" |
| #include "sdram-micron-mt46h32m32lf-6.h" |
| #include "hsmmc.h" |
| |
| #define OVERO_GPIO_BT_XGATE 15 |
| #define OVERO_GPIO_W2W_NRESET 16 |
| #define OVERO_GPIO_PENDOWN 114 |
| #define OVERO_GPIO_BT_NRESET 164 |
| #define OVERO_GPIO_USBH_CPEN 168 |
| #define OVERO_GPIO_USBH_NRESET 183 |
| |
| #define NAND_BLOCK_SIZE SZ_128K |
| |
| #define OVERO_SMSC911X_CS 5 |
| #define OVERO_SMSC911X_GPIO 176 |
| #define OVERO_SMSC911X2_CS 4 |
| #define OVERO_SMSC911X2_GPIO 65 |
| |
| #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \ |
| defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE) |
| |
| #include <plat/mcspi.h> |
| #include <linux/spi/spi.h> |
| #include <linux/spi/ads7846.h> |
| |
| static struct omap2_mcspi_device_config ads7846_mcspi_config = { |
| .turbo_mode = 0, |
| .single_channel = 1, /* 0: slave, 1: master */ |
| }; |
| |
| static int ads7846_get_pendown_state(void) |
| { |
| return !gpio_get_value(OVERO_GPIO_PENDOWN); |
| } |
| |
| static struct ads7846_platform_data ads7846_config = { |
| .x_max = 0x0fff, |
| .y_max = 0x0fff, |
| .x_plate_ohms = 180, |
| .pressure_max = 255, |
| .debounce_max = 10, |
| .debounce_tol = 3, |
| .debounce_rep = 1, |
| .get_pendown_state = ads7846_get_pendown_state, |
| .keep_vref_on = 1, |
| }; |
| |
| static struct spi_board_info overo_spi_board_info[] __initdata = { |
| { |
| .modalias = "ads7846", |
| .bus_num = 1, |
| .chip_select = 0, |
| .max_speed_hz = 1500000, |
| .controller_data = &ads7846_mcspi_config, |
| .irq = OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN), |
| .platform_data = &ads7846_config, |
| } |
| }; |
| |
| static void __init overo_ads7846_init(void) |
| { |
| if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) && |
| (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) { |
| gpio_export(OVERO_GPIO_PENDOWN, 0); |
| } else { |
| printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n"); |
| return; |
| } |
| |
| spi_register_board_info(overo_spi_board_info, |
| ARRAY_SIZE(overo_spi_board_info)); |
| } |
| |
| #else |
| static inline void __init overo_ads7846_init(void) { return; } |
| #endif |
| |
| #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE) |
| |
| #include <linux/smsc911x.h> |
| |
| static struct resource overo_smsc911x_resources[] = { |
| { |
| .name = "smsc911x-memory", |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL, |
| }, |
| }; |
| |
| static struct resource overo_smsc911x2_resources[] = { |
| { |
| .name = "smsc911x2-memory", |
| .flags = IORESOURCE_MEM, |
| }, |
| { |
| .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL, |
| }, |
| }; |
| |
| static struct smsc911x_platform_config overo_smsc911x_config = { |
| .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, |
| .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, |
| .flags = SMSC911X_USE_32BIT , |
| .phy_interface = PHY_INTERFACE_MODE_MII, |
| }; |
| |
| static struct platform_device overo_smsc911x_device = { |
| .name = "smsc911x", |
| .id = 0, |
| .num_resources = ARRAY_SIZE(overo_smsc911x_resources), |
| .resource = overo_smsc911x_resources, |
| .dev = { |
| .platform_data = &overo_smsc911x_config, |
| }, |
| }; |
| |
| static struct platform_device overo_smsc911x2_device = { |
| .name = "smsc911x", |
| .id = 1, |
| .num_resources = ARRAY_SIZE(overo_smsc911x2_resources), |
| .resource = overo_smsc911x2_resources, |
| .dev = { |
| .platform_data = &overo_smsc911x_config, |
| }, |
| }; |
| |
| static struct platform_device *smsc911x_devices[] = { |
| &overo_smsc911x_device, |
| &overo_smsc911x2_device, |
| }; |
| |
| static inline void __init overo_init_smsc911x(void) |
| { |
| unsigned long cs_mem_base, cs_mem_base2; |
| |
| /* set up first smsc911x chip */ |
| |
| if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) { |
| printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n"); |
| return; |
| } |
| |
| overo_smsc911x_resources[0].start = cs_mem_base + 0x0; |
| overo_smsc911x_resources[0].end = cs_mem_base + 0xff; |
| |
| if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) && |
| (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) { |
| gpio_export(OVERO_SMSC911X_GPIO, 0); |
| } else { |
| printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n"); |
| return; |
| } |
| |
| overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO); |
| overo_smsc911x_resources[1].end = 0; |
| |
| /* set up second smsc911x chip */ |
| |
| if (gpmc_cs_request(OVERO_SMSC911X2_CS, SZ_16M, &cs_mem_base2) < 0) { |
| printk(KERN_ERR "Failed request for GPMC mem for smsc911x2\n"); |
| return; |
| } |
| |
| overo_smsc911x2_resources[0].start = cs_mem_base2 + 0x0; |
| overo_smsc911x2_resources[0].end = cs_mem_base2 + 0xff; |
| |
| if ((gpio_request(OVERO_SMSC911X2_GPIO, "SMSC911X2 IRQ") == 0) && |
| (gpio_direction_input(OVERO_SMSC911X2_GPIO) == 0)) { |
| gpio_export(OVERO_SMSC911X2_GPIO, 0); |
| } else { |
| printk(KERN_ERR "could not obtain gpio for SMSC911X2 IRQ\n"); |
| return; |
| } |
| |
| overo_smsc911x2_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X2_GPIO); |
| overo_smsc911x2_resources[1].end = 0; |
| |
| platform_add_devices(smsc911x_devices, ARRAY_SIZE(smsc911x_devices)); |
| } |
| |
| #else |
| static inline void __init overo_init_smsc911x(void) { return; } |
| #endif |
| |
| static struct mtd_partition overo_nand_partitions[] = { |
| { |
| .name = "xloader", |
| .offset = 0, /* Offset = 0x00000 */ |
| .size = 4 * NAND_BLOCK_SIZE, |
| .mask_flags = MTD_WRITEABLE |
| }, |
| { |
| .name = "uboot", |
| .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */ |
| .size = 14 * NAND_BLOCK_SIZE, |
| }, |
| { |
| .name = "uboot environment", |
| .offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */ |
| .size = 2 * NAND_BLOCK_SIZE, |
| }, |
| { |
| .name = "linux", |
| .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */ |
| .size = 32 * NAND_BLOCK_SIZE, |
| }, |
| { |
| .name = "rootfs", |
| .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */ |
| .size = MTDPART_SIZ_FULL, |
| }, |
| }; |
| |
| static struct omap_nand_platform_data overo_nand_data = { |
| .parts = overo_nand_partitions, |
| .nr_parts = ARRAY_SIZE(overo_nand_partitions), |
| .dma_channel = -1, /* disable DMA in OMAP NAND driver */ |
| }; |
| |
| static void __init overo_flash_init(void) |
| { |
| u8 cs = 0; |
| u8 nandcs = GPMC_CS_NUM + 1; |
| |
| /* find out the chip-select on which NAND exists */ |
| while (cs < GPMC_CS_NUM) { |
| u32 ret = 0; |
| ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1); |
| |
| if ((ret & 0xC00) == 0x800) { |
| printk(KERN_INFO "Found NAND on CS%d\n", cs); |
| if (nandcs > GPMC_CS_NUM) |
| nandcs = cs; |
| } |
| cs++; |
| } |
| |
| if (nandcs > GPMC_CS_NUM) { |
| printk(KERN_INFO "NAND: Unable to find configuration " |
| "in GPMC\n "); |
| return; |
| } |
| |
| if (nandcs < GPMC_CS_NUM) { |
| overo_nand_data.cs = nandcs; |
| |
| printk(KERN_INFO "Registering NAND on CS%d\n", nandcs); |
| if (gpmc_nand_init(&overo_nand_data) < 0) |
| printk(KERN_ERR "Unable to register NAND device\n"); |
| } |
| } |
| |
| static struct omap2_hsmmc_info mmc[] = { |
| { |
| .mmc = 1, |
| .caps = MMC_CAP_4_BIT_DATA, |
| .gpio_cd = -EINVAL, |
| .gpio_wp = -EINVAL, |
| }, |
| { |
| .mmc = 2, |
| .caps = MMC_CAP_4_BIT_DATA, |
| .gpio_cd = -EINVAL, |
| .gpio_wp = -EINVAL, |
| .transceiver = true, |
| .ocr_mask = 0x00100000, /* 3.3V */ |
| }, |
| {} /* Terminator */ |
| }; |
| |
| static struct regulator_consumer_supply overo_vmmc1_supply = { |
| .supply = "vmmc", |
| }; |
| |
| static int overo_twl_gpio_setup(struct device *dev, |
| unsigned gpio, unsigned ngpio) |
| { |
| omap2_hsmmc_init(mmc); |
| |
| overo_vmmc1_supply.dev = mmc[0].dev; |
| |
| return 0; |
| } |
| |
| static struct twl4030_gpio_platform_data overo_gpio_data = { |
| .gpio_base = OMAP_MAX_GPIO_LINES, |
| .irq_base = TWL4030_GPIO_IRQ_BASE, |
| .irq_end = TWL4030_GPIO_IRQ_END, |
| .setup = overo_twl_gpio_setup, |
| }; |
| |
| static struct twl4030_usb_data overo_usb_data = { |
| .usb_mode = T2_USB_MODE_ULPI, |
| }; |
| |
| static struct regulator_init_data overo_vmmc1 = { |
| .constraints = { |
| .min_uV = 1850000, |
| .max_uV = 3150000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL |
| | REGULATOR_MODE_STANDBY, |
| .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
| | REGULATOR_CHANGE_MODE |
| | REGULATOR_CHANGE_STATUS, |
| }, |
| .num_consumer_supplies = 1, |
| .consumer_supplies = &overo_vmmc1_supply, |
| }; |
| |
| static struct twl4030_codec_audio_data overo_audio_data; |
| |
| static struct twl4030_codec_data overo_codec_data = { |
| .audio_mclk = 26000000, |
| .audio = &overo_audio_data, |
| }; |
| |
| /* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */ |
| |
| static struct twl4030_platform_data overo_twldata = { |
| .irq_base = TWL4030_IRQ_BASE, |
| .irq_end = TWL4030_IRQ_END, |
| .gpio = &overo_gpio_data, |
| .usb = &overo_usb_data, |
| .codec = &overo_codec_data, |
| .vmmc1 = &overo_vmmc1, |
| }; |
| |
| static struct i2c_board_info __initdata overo_i2c_boardinfo[] = { |
| { |
| I2C_BOARD_INFO("tps65950", 0x48), |
| .flags = I2C_CLIENT_WAKE, |
| .irq = INT_34XX_SYS_NIRQ, |
| .platform_data = &overo_twldata, |
| }, |
| }; |
| |
| static int __init overo_i2c_init(void) |
| { |
| omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo, |
| ARRAY_SIZE(overo_i2c_boardinfo)); |
| /* i2c2 pins are used for gpio */ |
| omap_register_i2c_bus(3, 400, NULL, 0); |
| return 0; |
| } |
| |
| static struct platform_device overo_lcd_device = { |
| .name = "overo_lcd", |
| .id = -1, |
| }; |
| |
| static struct omap_lcd_config overo_lcd_config __initdata = { |
| .ctrl_name = "internal", |
| }; |
| |
| static struct omap_board_config_kernel overo_config[] __initdata = { |
| { OMAP_TAG_LCD, &overo_lcd_config }, |
| }; |
| |
| static void __init overo_init_early(void) |
| { |
| omap2_init_common_infrastructure(); |
| omap2_init_common_devices(mt46h32m32lf6_sdrc_params, |
| mt46h32m32lf6_sdrc_params); |
| } |
| |
| static struct platform_device *overo_devices[] __initdata = { |
| &overo_lcd_device, |
| }; |
| |
| static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = { |
| .port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN, |
| .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY, |
| .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN, |
| |
| .phy_reset = true, |
| .reset_gpio_port[0] = -EINVAL, |
| .reset_gpio_port[1] = OVERO_GPIO_USBH_NRESET, |
| .reset_gpio_port[2] = -EINVAL |
| }; |
| |
| #ifdef CONFIG_OMAP_MUX |
| static struct omap_board_mux board_mux[] __initdata = { |
| { .reg_offset = OMAP_MUX_TERMINATOR }, |
| }; |
| #endif |
| |
| static struct omap_musb_board_data musb_board_data = { |
| .interface_type = MUSB_INTERFACE_ULPI, |
| .mode = MUSB_OTG, |
| .power = 100, |
| }; |
| |
| static void __init overo_init(void) |
| { |
| omap3_mux_init(board_mux, OMAP_PACKAGE_CBB); |
| omap_board_config = overo_config; |
| omap_board_config_size = ARRAY_SIZE(overo_config); |
| overo_i2c_init(); |
| platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices)); |
| omap_serial_init(); |
| overo_flash_init(); |
| usb_musb_init(&musb_board_data); |
| usb_ehci_init(&ehci_pdata); |
| overo_ads7846_init(); |
| overo_init_smsc911x(); |
| |
| /* Ensure SDRC pins are mux'd for self-refresh */ |
| omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT); |
| omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT); |
| |
| if ((gpio_request(OVERO_GPIO_W2W_NRESET, |
| "OVERO_GPIO_W2W_NRESET") == 0) && |
| (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) { |
| gpio_export(OVERO_GPIO_W2W_NRESET, 0); |
| gpio_set_value(OVERO_GPIO_W2W_NRESET, 0); |
| udelay(10); |
| gpio_set_value(OVERO_GPIO_W2W_NRESET, 1); |
| } else { |
| printk(KERN_ERR "could not obtain gpio for " |
| "OVERO_GPIO_W2W_NRESET\n"); |
| } |
| |
| if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) && |
| (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0)) |
| gpio_export(OVERO_GPIO_BT_XGATE, 0); |
| else |
| printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n"); |
| |
| if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) && |
| (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) { |
| gpio_export(OVERO_GPIO_BT_NRESET, 0); |
| gpio_set_value(OVERO_GPIO_BT_NRESET, 0); |
| mdelay(6); |
| gpio_set_value(OVERO_GPIO_BT_NRESET, 1); |
| } else { |
| printk(KERN_ERR "could not obtain gpio for " |
| "OVERO_GPIO_BT_NRESET\n"); |
| } |
| |
| if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) && |
| (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0)) |
| gpio_export(OVERO_GPIO_USBH_CPEN, 0); |
| else |
| printk(KERN_ERR "could not obtain gpio for " |
| "OVERO_GPIO_USBH_CPEN\n"); |
| } |
| |
| MACHINE_START(OVERO, "Gumstix Overo") |
| .boot_params = 0x80000100, |
| .reserve = omap_reserve, |
| .map_io = omap3_map_io, |
| .init_early = overo_init_early, |
| .init_irq = omap_init_irq, |
| .init_machine = overo_init, |
| .timer = &omap_timer, |
| MACHINE_END |