/* * TI DaVinci DM646X EVM board * * Derived from: arch/arm/mach-davinci/board-evm.c * Copyright (C) 2006 Texas Instruments. * * (C) 2007-2008, MontaVista Software, Inc. * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any * kind, whether express or implied. * */ /************************************************************************** * Included Files **************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "davinci.h" #include "clock.h" #define NAND_BLOCK_SIZE SZ_128K /* Note: We are setting first partition as 'bootloader' constituting UBL, U-Boot * and U-Boot environment this avoids dependency on any particular combination * of UBL, U-Boot or flashing tools etc. */ static struct mtd_partition davinci_nand_partitions[] = { { /* UBL, U-Boot with environment */ .name = "bootloader", .offset = MTDPART_OFS_APPEND, .size = 16 * NAND_BLOCK_SIZE, .mask_flags = MTD_WRITEABLE, /* force read-only */ }, { .name = "kernel", .offset = MTDPART_OFS_APPEND, .size = SZ_4M, .mask_flags = 0, }, { .name = "filesystem", .offset = MTDPART_OFS_APPEND, .size = MTDPART_SIZ_FULL, .mask_flags = 0, } }; static struct davinci_aemif_timing dm6467tevm_nandflash_timing = { .wsetup = 29, .wstrobe = 24, .whold = 14, .rsetup = 19, .rstrobe = 33, .rhold = 0, .ta = 29, }; static struct davinci_nand_pdata davinci_nand_data = { .mask_cle = 0x80000, .mask_ale = 0x40000, .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), .ecc_mode = NAND_ECC_HW, .options = 0, }; static struct resource davinci_nand_resources[] = { { .start = DM646X_ASYNC_EMIF_CS2_SPACE_BASE, .end = DM646X_ASYNC_EMIF_CS2_SPACE_BASE + SZ_32M - 1, .flags = IORESOURCE_MEM, }, { .start = DM646X_ASYNC_EMIF_CONTROL_BASE, .end = DM646X_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1, .flags = IORESOURCE_MEM, }, }; static struct platform_device davinci_nand_device = { .name = "davinci_nand", .id = 0, .num_resources = ARRAY_SIZE(davinci_nand_resources), .resource = davinci_nand_resources, .dev = { .platform_data = &davinci_nand_data, }, }; #if defined(CONFIG_BLK_DEV_PALMCHIP_BK3710) || \ defined(CONFIG_BLK_DEV_PALMCHIP_BK3710_MODULE) #define HAS_ATA 1 #else #define HAS_ATA 0 #endif /* CPLD Register 0 bits to control ATA */ #define DM646X_EVM_ATA_RST BIT(0) #define DM646X_EVM_ATA_PWD BIT(1) /* CPLD Register 0 Client: used for I/O Control */ static int cpld_reg0_probe(struct i2c_client *client, const struct i2c_device_id *id) { if (HAS_ATA) { u8 data; struct i2c_msg msg[2] = { { .addr = client->addr, .flags = I2C_M_RD, .len = 1, .buf = &data, }, { .addr = client->addr, .flags = 0, .len = 1, .buf = &data, }, }; /* Clear ATA_RSTn and ATA_PWD bits to enable ATA operation. */ i2c_transfer(client->adapter, msg, 1); data &= ~(DM646X_EVM_ATA_RST | DM646X_EVM_ATA_PWD); i2c_transfer(client->adapter, msg + 1, 1); } return 0; } static const struct i2c_device_id cpld_reg_ids[] = { { "cpld_reg0", 0, }, { }, }; static struct i2c_driver dm6467evm_cpld_driver = { .driver.name = "cpld_reg0", .id_table = cpld_reg_ids, .probe = cpld_reg0_probe, }; /* LEDS */ static struct gpio_led evm_leds[] = { { .name = "DS1", .active_low = 1, }, { .name = "DS2", .active_low = 1, }, { .name = "DS3", .active_low = 1, }, { .name = "DS4", .active_low = 1, }, }; static const struct gpio_led_platform_data evm_led_data = { .num_leds = ARRAY_SIZE(evm_leds), .leds = evm_leds, }; static struct platform_device *evm_led_dev; static int evm_led_setup(struct i2c_client *client, int gpio, unsigned int ngpio, void *c) { struct gpio_led *leds = evm_leds; int status; while (ngpio--) { leds->gpio = gpio++; leds++; } evm_led_dev = platform_device_alloc("leds-gpio", 0); platform_device_add_data(evm_led_dev, &evm_led_data, sizeof(evm_led_data)); evm_led_dev->dev.parent = &client->dev; status = platform_device_add(evm_led_dev); if (status < 0) { platform_device_put(evm_led_dev); evm_led_dev = NULL; } return status; } static int evm_led_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { if (evm_led_dev) { platform_device_unregister(evm_led_dev); evm_led_dev = NULL; } return 0; } static int evm_sw_gpio[4] = { -EINVAL, -EINVAL, -EINVAL, -EINVAL }; static int evm_sw_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { int status; int i; char label[10]; for (i = 0; i < 4; ++i) { snprintf(label, 10, "user_sw%d", i); status = gpio_request(gpio, label); if (status) goto out_free; evm_sw_gpio[i] = gpio++; status = gpio_direction_input(evm_sw_gpio[i]); if (status) { gpio_free(evm_sw_gpio[i]); evm_sw_gpio[i] = -EINVAL; goto out_free; } status = gpio_export(evm_sw_gpio[i], 0); if (status) { gpio_free(evm_sw_gpio[i]); evm_sw_gpio[i] = -EINVAL; goto out_free; } } return status; out_free: for (i = 0; i < 4; ++i) { if (evm_sw_gpio[i] != -EINVAL) { gpio_free(evm_sw_gpio[i]); evm_sw_gpio[i] = -EINVAL; } } return status; } static int evm_sw_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { int i; for (i = 0; i < 4; ++i) { if (evm_sw_gpio[i] != -EINVAL) { gpio_unexport(evm_sw_gpio[i]); gpio_free(evm_sw_gpio[i]); evm_sw_gpio[i] = -EINVAL; } } return 0; } static int evm_pcf_setup(struct i2c_client *client, int gpio, unsigned int ngpio, void *c) { int status; if (ngpio < 8) return -EINVAL; status = evm_sw_setup(client, gpio, 4, c); if (status) return status; return evm_led_setup(client, gpio+4, 4, c); } static int evm_pcf_teardown(struct i2c_client *client, int gpio, unsigned int ngpio, void *c) { BUG_ON(ngpio < 8); evm_sw_teardown(client, gpio, 4, c); evm_led_teardown(client, gpio+4, 4, c); return 0; } static struct pcf857x_platform_data pcf_data = { .gpio_base = DAVINCI_N_GPIO+1, .setup = evm_pcf_setup, .teardown = evm_pcf_teardown, }; /* Most of this EEPROM is unused, but U-Boot uses some data: * - 0x7f00, 6 bytes Ethernet Address * - ... newer boards may have more */ static struct at24_platform_data eeprom_info = { .byte_len = (256*1024) / 8, .page_size = 64, .flags = AT24_FLAG_ADDR16, .setup = davinci_get_mac_addr, .context = (void *)0x7f00, }; static u8 dm646x_iis_serializer_direction[] = { TX_MODE, RX_MODE, INACTIVE_MODE, INACTIVE_MODE, }; static u8 dm646x_dit_serializer_direction[] = { TX_MODE, }; static struct snd_platform_data dm646x_evm_snd_data[] = { { .tx_dma_offset = 0x400, .rx_dma_offset = 0x400, .op_mode = DAVINCI_MCASP_IIS_MODE, .num_serializer = ARRAY_SIZE(dm646x_iis_serializer_direction), .tdm_slots = 2, .serial_dir = dm646x_iis_serializer_direction, .asp_chan_q = EVENTQ_0, }, { .tx_dma_offset = 0x400, .rx_dma_offset = 0, .op_mode = DAVINCI_MCASP_DIT_MODE, .num_serializer = ARRAY_SIZE(dm646x_dit_serializer_direction), .tdm_slots = 32, .serial_dir = dm646x_dit_serializer_direction, .asp_chan_q = EVENTQ_0, }, }; static struct i2c_client *cpld_client; static int cpld_video_probe(struct i2c_client *client, const struct i2c_device_id *id) { cpld_client = client; return 0;