90c62bf08f
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>
182 lines
4 KiB
C
182 lines
4 KiB
C
/*
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* linux/arch/arm/mach-omap2/board-ldp.c
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*
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* Copyright (C) 2008 Texas Instruments Inc.
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* Nishant Kamat <nskamat@ti.com>
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*
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* Modified from mach-omap2/board-3430sdp.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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/platform_device.h>
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#include <linux/delay.h>
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#include <linux/input.h>
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#include <linux/workqueue.h>
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#include <linux/err.h>
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#include <linux/clk.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 <mach/hardware.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-ldp.h>
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#include <mach/mcspi.h>
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#include <mach/gpio.h>
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#include <mach/board.h>
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#include <mach/common.h>
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#include <mach/gpmc.h>
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#include <asm/io.h>
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#include <asm/delay.h>
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#include <mach/control.h>
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#include "mmc-twl4030.h"
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#define SDP3430_SMC91X_CS 3
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static struct resource ldp_smc911x_resources[] = {
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[0] = {
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.start = OMAP34XX_ETHR_START,
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.end = OMAP34XX_ETHR_START + SZ_4K,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 0,
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.end = 0,
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.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
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},
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};
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static struct platform_device ldp_smc911x_device = {
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.name = "smc911x",
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.id = -1,
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.num_resources = ARRAY_SIZE(ldp_smc911x_resources),
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.resource = ldp_smc911x_resources,
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};
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static struct platform_device *ldp_devices[] __initdata = {
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&ldp_smc911x_device,
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};
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static inline void __init ldp_init_smc911x(void)
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{
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int eth_cs;
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unsigned long cs_mem_base;
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int eth_gpio = 0;
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eth_cs = LDP_SMC911X_CS;
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if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
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printk(KERN_ERR "Failed to request GPMC mem for smc911x\n");
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return;
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}
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ldp_smc911x_resources[0].start = cs_mem_base + 0x0;
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ldp_smc911x_resources[0].end = cs_mem_base + 0xf;
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udelay(100);
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eth_gpio = LDP_SMC911X_GPIO;
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ldp_smc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
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if (omap_request_gpio(eth_gpio) < 0) {
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printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
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eth_gpio);
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return;
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}
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gpio_direction_input(eth_gpio);
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}
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static void __init omap_ldp_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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ldp_init_smc911x();
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}
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static struct omap_uart_config ldp_uart_config __initdata = {
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.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
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};
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static struct omap_board_config_kernel ldp_config[] __initdata = {
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{ OMAP_TAG_UART, &ldp_uart_config },
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};
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static struct twl4030_gpio_platform_data ldp_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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};
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static struct twl4030_platform_data ldp_twldata = {
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.irq_base = TWL4030_IRQ_BASE,
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.irq_end = TWL4030_IRQ_END,
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/* platform_data for children goes here */
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.gpio = &ldp_gpio_data,
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};
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static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
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{
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I2C_BOARD_INFO("twl4030", 0x48),
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.flags = I2C_CLIENT_WAKE,
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.irq = INT_34XX_SYS_NIRQ,
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.platform_data = &ldp_twldata,
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},
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};
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static int __init omap_i2c_init(void)
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{
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omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
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ARRAY_SIZE(ldp_i2c_boardinfo));
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omap_register_i2c_bus(2, 400, NULL, 0);
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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 struct twl4030_hsmmc_info mmc[] __initdata = {
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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 = -EINVAL,
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},
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{} /* Terminator */
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};
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static void __init omap_ldp_init(void)
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{
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omap_i2c_init();
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platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
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omap_board_config = ldp_config;
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omap_board_config_size = ARRAY_SIZE(ldp_config);
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omap_serial_init();
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twl4030_mmc_init(mmc);
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}
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static void __init omap_ldp_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(OMAP_LDP, "OMAP LDP board")
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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 = omap_ldp_map_io,
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.init_irq = omap_ldp_init_irq,
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.init_machine = omap_ldp_init,
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.timer = &omap_timer,
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MACHINE_END
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