![Tony Lindgren](/assets/img/avatar_default.png)
Add low-level initialization for hsmmc controller. Merged into this patch patch are various improvments and board support by Grazvydas Ignotas and David Brownell. Also change wire4 to be wires, as some newer controllers support 8 data lines. Cc: Pierre Ossman <drzeus-mmc@drzeus.cx> Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
213 lines
5.2 KiB
C
213 lines
5.2 KiB
C
/*
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* board-omap3pandora.c (Pandora Handheld Console)
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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
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <linux/i2c/twl4030.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <mach/board.h>
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#include <mach/common.h>
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#include <mach/gpio.h>
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#include <mach/hardware.h>
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#include <mach/mcspi.h>
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#include "mmc-twl4030.h"
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#define OMAP3_PANDORA_TS_GPIO 94
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static struct twl4030_hsmmc_info omap3pandora_mmc[] = {
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{
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.mmc = 1,
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.wires = 4,
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.gpio_cd = -EINVAL,
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.gpio_wp = 126,
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.ext_clock = 0,
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},
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{
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.mmc = 2,
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.wires = 4,
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.gpio_cd = -EINVAL,
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.gpio_wp = 127,
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.ext_clock = 1,
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},
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{} /* Terminator */
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};
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static struct omap_uart_config omap3pandora_uart_config __initdata = {
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.enabled_uarts = (1 << 2), /* UART3 */
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};
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static int omap3pandora_twl_gpio_setup(struct device *dev,
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unsigned gpio, unsigned ngpio)
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{
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/* gpio + {0,1} is "mmc{0,1}_cd" (input/IRQ) */
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omap3pandora_mmc[0].gpio_cd = gpio + 0;
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omap3pandora_mmc[1].gpio_cd = gpio + 1;
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twl4030_mmc_init(omap3pandora_mmc);
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return 0;
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}
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static struct twl4030_gpio_platform_data omap3pandora_gpio_data = {
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.gpio_base = OMAP_MAX_GPIO_LINES,
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.irq_base = TWL4030_GPIO_IRQ_BASE,
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.irq_end = TWL4030_GPIO_IRQ_END,
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.setup = omap3pandora_twl_gpio_setup,
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};
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static struct twl4030_usb_data omap3pandora_usb_data = {
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.usb_mode = T2_USB_MODE_ULPI,
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};
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static struct twl4030_platform_data omap3pandora_twldata = {
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.irq_base = TWL4030_IRQ_BASE,
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.irq_end = TWL4030_IRQ_END,
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.gpio = &omap3pandora_gpio_data,
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.usb = &omap3pandora_usb_data,
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};
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static struct i2c_board_info __initdata omap3pandora_i2c_boardinfo[] = {
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{
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I2C_BOARD_INFO("tps65950", 0x48),
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.flags = I2C_CLIENT_WAKE,
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.irq = INT_34XX_SYS_NIRQ,
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.platform_data = &omap3pandora_twldata,
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},
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};
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static int __init omap3pandora_i2c_init(void)
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{
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omap_register_i2c_bus(1, 2600, omap3pandora_i2c_boardinfo,
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ARRAY_SIZE(omap3pandora_i2c_boardinfo));
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/* i2c2 pins are not connected */
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omap_register_i2c_bus(3, 400, NULL, 0);
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return 0;
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}
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static void __init omap3pandora_init_irq(void)
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{
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omap2_init_common_hw();
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omap_init_irq();
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omap_gpio_init();
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}
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static void __init omap3pandora_ads7846_init(void)
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{
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int gpio = OMAP3_PANDORA_TS_GPIO;
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int ret;
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ret = gpio_request(gpio, "ads7846_pen_down");
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if (ret < 0) {
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printk(KERN_ERR "Failed to request GPIO %d for "
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"ads7846 pen down IRQ\n", gpio);
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return;
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}
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gpio_direction_input(gpio);
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}
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static int ads7846_get_pendown_state(void)
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{
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return !gpio_get_value(OMAP3_PANDORA_TS_GPIO);
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}
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static struct ads7846_platform_data ads7846_config = {
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.x_max = 0x0fff,
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.y_max = 0x0fff,
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.x_plate_ohms = 180,
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.pressure_max = 255,
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.debounce_max = 10,
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.debounce_tol = 3,
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.debounce_rep = 1,
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.get_pendown_state = ads7846_get_pendown_state,
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.keep_vref_on = 1,
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};
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static struct omap2_mcspi_device_config ads7846_mcspi_config = {
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.turbo_mode = 0,
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.single_channel = 1, /* 0: slave, 1: master */
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};
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static struct spi_board_info omap3pandora_spi_board_info[] __initdata = {
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{
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.modalias = "ads7846",
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.bus_num = 1,
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.chip_select = 0,
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.max_speed_hz = 1500000,
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.controller_data = &ads7846_mcspi_config,
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.irq = OMAP_GPIO_IRQ(OMAP3_PANDORA_TS_GPIO),
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.platform_data = &ads7846_config,
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}
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};
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static struct platform_device omap3pandora_lcd_device = {
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.name = "pandora_lcd",
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.id = -1,
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};
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static struct omap_lcd_config omap3pandora_lcd_config __initdata = {
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.ctrl_name = "internal",
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};
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static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
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{ OMAP_TAG_UART, &omap3pandora_uart_config },
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{ OMAP_TAG_LCD, &omap3pandora_lcd_config },
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};
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static struct platform_device *omap3pandora_devices[] __initdata = {
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&omap3pandora_lcd_device,
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};
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static void __init omap3pandora_init(void)
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{
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omap3pandora_i2c_init();
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platform_add_devices(omap3pandora_devices,
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ARRAY_SIZE(omap3pandora_devices));
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omap_board_config = omap3pandora_config;
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omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
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omap_serial_init();
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spi_register_board_info(omap3pandora_spi_board_info,
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ARRAY_SIZE(omap3pandora_spi_board_info));
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omap3pandora_ads7846_init();
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}
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static void __init omap3pandora_map_io(void)
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{
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omap2_set_globals_343x();
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omap2_map_common_io();
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}
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MACHINE_START(OMAP3_PANDORA, "Pandora Handheld Console")
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.phys_io = 0x48000000,
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.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
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.boot_params = 0x80000100,
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.map_io = omap3pandora_map_io,
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.init_irq = omap3pandora_init_irq,
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.init_machine = omap3pandora_init,
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.timer = &omap_timer,
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MACHINE_END
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