288 lines
6.5 KiB
C
288 lines
6.5 KiB
C
/*
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* Texas Instruments TNETV107X EVM Board Support
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*
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* Copyright (C) 2010 Texas Instruments
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/dma-mapping.h>
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#include <linux/interrupt.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/ratelimit.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/input.h>
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#include <linux/input/matrix_keypad.h>
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#include <linux/spi/spi.h>
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#include <linux/platform_data/edma.h>
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#include <asm/mach/arch.h>
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#include <asm/mach-types.h>
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#include <mach/irqs.h>
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#include <mach/mux.h>
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#include <mach/cp_intc.h>
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#include <mach/tnetv107x.h>
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#define EVM_MMC_WP_GPIO 21
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#define EVM_MMC_CD_GPIO 24
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#define EVM_SPI_CS_GPIO 54
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static int initialize_gpio(int gpio, char *desc)
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{
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int ret;
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ret = gpio_request(gpio, desc);
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if (ret < 0) {
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pr_err_ratelimited("cannot open %s gpio\n", desc);
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return -ENOSYS;
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}
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gpio_direction_input(gpio);
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return gpio;
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}
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static int mmc_get_cd(int index)
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{
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static int gpio;
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if (!gpio)
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gpio = initialize_gpio(EVM_MMC_CD_GPIO, "mmc card detect");
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if (gpio < 0)
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return gpio;
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return gpio_get_value(gpio) ? 0 : 1;
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}
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static int mmc_get_ro(int index)
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{
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static int gpio;
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if (!gpio)
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gpio = initialize_gpio(EVM_MMC_WP_GPIO, "mmc write protect");
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if (gpio < 0)
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return gpio;
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return gpio_get_value(gpio) ? 1 : 0;
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}
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static struct davinci_mmc_config mmc_config = {
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.get_cd = mmc_get_cd,
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.get_ro = mmc_get_ro,
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.wires = 4,
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.max_freq = 50000000,
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.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
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};
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static const short sdio1_pins[] __initconst = {
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TNETV107X_SDIO1_CLK_1, TNETV107X_SDIO1_CMD_1,
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TNETV107X_SDIO1_DATA0_1, TNETV107X_SDIO1_DATA1_1,
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TNETV107X_SDIO1_DATA2_1, TNETV107X_SDIO1_DATA3_1,
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TNETV107X_GPIO21, TNETV107X_GPIO24,
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-1
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};
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static const short uart1_pins[] __initconst = {
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TNETV107X_UART1_RD, TNETV107X_UART1_TD,
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-1
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};
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static const short ssp_pins[] __initconst = {
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TNETV107X_SSP0_0, TNETV107X_SSP0_1, TNETV107X_SSP0_2,
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TNETV107X_SSP1_0, TNETV107X_SSP1_1, TNETV107X_SSP1_2,
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TNETV107X_SSP1_3, -1
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};
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static struct mtd_partition nand_partitions[] = {
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/* bootloader (U-Boot, etc) in first 12 sectors */
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{
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.name = "bootloader",
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.offset = 0,
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.size = (12*SZ_128K),
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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/* bootloader params in the next sector */
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{
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.name = "params",
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.offset = MTDPART_OFS_NXTBLK,
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.size = SZ_128K,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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/* kernel */
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{
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.name = "kernel",
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.offset = MTDPART_OFS_NXTBLK,
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.size = SZ_4M,
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.mask_flags = 0,
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},
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/* file system */
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{
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.name = "filesystem",
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.offset = MTDPART_OFS_NXTBLK,
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.size = MTDPART_SIZ_FULL,
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.mask_flags = 0,
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}
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};
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static struct davinci_nand_pdata nand_config = {
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.mask_cle = 0x4000,
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.mask_ale = 0x2000,
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.parts = nand_partitions,
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.nr_parts = ARRAY_SIZE(nand_partitions),
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.ecc_mode = NAND_ECC_HW,
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.bbt_options = NAND_BBT_USE_FLASH,
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.ecc_bits = 1,
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};
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static struct davinci_uart_config serial_config __initconst = {
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.enabled_uarts = BIT(1),
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};
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static const uint32_t keymap[] = {
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KEY(0, 0, KEY_NUMERIC_1),
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KEY(0, 1, KEY_NUMERIC_2),
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KEY(0, 2, KEY_NUMERIC_3),
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KEY(0, 3, KEY_FN_F1),
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KEY(0, 4, KEY_MENU),
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KEY(1, 0, KEY_NUMERIC_4),
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KEY(1, 1, KEY_NUMERIC_5),
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KEY(1, 2, KEY_NUMERIC_6),
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KEY(1, 3, KEY_UP),
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KEY(1, 4, KEY_FN_F2),
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KEY(2, 0, KEY_NUMERIC_7),
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KEY(2, 1, KEY_NUMERIC_8),
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KEY(2, 2, KEY_NUMERIC_9),
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KEY(2, 3, KEY_LEFT),
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KEY(2, 4, KEY_ENTER),
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KEY(3, 0, KEY_NUMERIC_STAR),
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KEY(3, 1, KEY_NUMERIC_0),
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KEY(3, 2, KEY_NUMERIC_POUND),
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KEY(3, 3, KEY_DOWN),
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KEY(3, 4, KEY_RIGHT),
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KEY(4, 0, KEY_FN_F3),
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KEY(4, 1, KEY_FN_F4),
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KEY(4, 2, KEY_MUTE),
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KEY(4, 3, KEY_HOME),
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KEY(4, 4, KEY_BACK),
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KEY(5, 0, KEY_VOLUMEDOWN),
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KEY(5, 1, KEY_VOLUMEUP),
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KEY(5, 2, KEY_F1),
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KEY(5, 3, KEY_F2),
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KEY(5, 4, KEY_F3),
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};
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static const struct matrix_keymap_data keymap_data = {
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.keymap = keymap,
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.keymap_size = ARRAY_SIZE(keymap),
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};
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static struct matrix_keypad_platform_data keypad_config = {
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.keymap_data = &keymap_data,
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.num_row_gpios = 6,
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.num_col_gpios = 5,
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.debounce_ms = 0, /* minimum */
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.active_low = 0, /* pull up realization */
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.no_autorepeat = 0,
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};
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static void spi_select_device(int cs)
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{
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static int gpio;
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if (!gpio) {
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int ret;
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ret = gpio_request(EVM_SPI_CS_GPIO, "spi chipsel");
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if (ret < 0) {
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pr_err("cannot open spi chipsel gpio\n");
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gpio = -ENOSYS;
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return;
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} else {
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gpio = EVM_SPI_CS_GPIO;
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gpio_direction_output(gpio, 0);
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}
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}
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if (gpio < 0)
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return;
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return gpio_set_value(gpio, cs ? 1 : 0);
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}
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static struct ti_ssp_spi_data spi_master_data = {
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.num_cs = 2,
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.select = spi_select_device,
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.iosel = SSP_PIN_SEL(0, SSP_CLOCK) | SSP_PIN_SEL(1, SSP_DATA) |
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SSP_PIN_SEL(2, SSP_CHIPSEL) | SSP_PIN_SEL(3, SSP_IN) |
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SSP_INPUT_SEL(3),
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};
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static struct ti_ssp_data ssp_config = {
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.out_clock = 250 * 1000,
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.dev_data = {
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[1] = {
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.dev_name = "ti-ssp-spi",
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.pdata = &spi_master_data,
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.pdata_size = sizeof(spi_master_data),
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},
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},
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};
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static struct tnetv107x_device_info evm_device_info __initconst = {
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.serial_config = &serial_config,
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.mmc_config[1] = &mmc_config, /* controller 1 */
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.nand_config[0] = &nand_config, /* chip select 0 */
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.keypad_config = &keypad_config,
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.ssp_config = &ssp_config,
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};
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static struct spi_board_info spi_info[] __initconst = {
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};
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static __init void tnetv107x_evm_board_init(void)
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{
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davinci_cfg_reg_list(sdio1_pins);
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davinci_cfg_reg_list(uart1_pins);
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davinci_cfg_reg_list(ssp_pins);
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tnetv107x_devices_init(&evm_device_info);
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spi_register_board_info(spi_info, ARRAY_SIZE(spi_info));
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}
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#ifdef CONFIG_SERIAL_8250_CONSOLE
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static int __init tnetv107x_evm_console_init(void)
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{
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return add_preferred_console("ttyS", 0, "115200");
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}
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console_initcall(tnetv107x_evm_console_init);
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#endif
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MACHINE_START(TNETV107X, "TNETV107X EVM")
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.atag_offset = 0x100,
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.map_io = tnetv107x_init,
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.init_irq = cp_intc_init,
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.init_time = davinci_timer_init,
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.init_machine = tnetv107x_evm_board_init,
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.init_late = davinci_init_late,
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.dma_zone_size = SZ_128M,
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.restart = tnetv107x_restart,
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MACHINE_END
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