/* * Freescale STMP378X development board support * * Embedded Alley Solutions, Inc <source@embeddedalley.com> * * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. */ /* * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License * Version 2 or later at the following locations: * * http://www.opensource.org/licenses/gpl-license.html * http://www.gnu.org/copyleft/gpl.html */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/io.h> #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/spi/spi.h> #include <asm/setup.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> #include <mach/pins.h> #include <mach/pinmux.h> #include <mach/platform.h> #include <mach/stmp3xxx.h> #include <mach/mmc.h> #include <mach/gpmi.h> #include "stmp378x.h" static struct platform_device *devices[] = { &stmp3xxx_dbguart, &stmp3xxx_appuart, &stmp3xxx_watchdog, &stmp3xxx_touchscreen, &stmp3xxx_rtc, &stmp3xxx_keyboard, &stmp3xxx_framebuffer, &stmp3xxx_backlight, &stmp3xxx_rotdec, &stmp3xxx_persistent, &stmp3xxx_dcp_bootstream, &stmp3xxx_dcp, &stmp3xxx_battery, &stmp378x_pxp, &stmp378x_i2c, }; static struct pin_desc i2c_pins_desc[] = { { PINID_I2C_SCL, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_I2C_SDA, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, }; static struct pin_group i2c_pins = { .pins = i2c_pins_desc, .nr_pins = ARRAY_SIZE(i2c_pins_desc), }; static struct pin_desc dbguart_pins_0[] = { { PINID_PWM0, PIN_FUN3, }, { PINID_PWM1, PIN_FUN3, }, }; static struct pin_group dbguart_pins[] = { [0] = { .pins = dbguart_pins_0, .nr_pins = ARRAY_SIZE(dbguart_pins_0), }, }; static int dbguart_pins_control(int id, int request) { int r = 0; if (request) r = stmp3xxx_request_pin_group(&dbguart_pins[id], "debug uart"); else stmp3xxx_release_pin_group(&dbguart_pins[id], "debug uart"); return r; } static struct pin_desc appuart_pins_0[] = { { PINID_AUART1_CTS, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, }, { PINID_AUART1_RTS, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, }, { PINID_AUART1_RX, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, }, { PINID_AUART1_TX, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, }, }; static struct pin_desc appuart_pins_1[] = { #if 0 /* enable these when second appuart will be connected */ { PINID_AUART2_CTS, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, }, { PINID_AUART2_RTS, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, }, { PINID_AUART2_RX, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, }, { PINID_AUART2_TX, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, }, #endif }; static struct pin_desc mmc_pins_desc[] = { { PINID_SSP1_DATA0, PIN_FUN1, PIN_8MA, PIN_3_3V, 1 }, { PINID_SSP1_DATA1, PIN_FUN1, PIN_8MA, PIN_3_3V, 1 }, { PINID_SSP1_DATA2, PIN_FUN1, PIN_8MA, PIN_3_3V, 1 }, { PINID_SSP1_DATA3, PIN_FUN1, PIN_8MA, PIN_3_3V, 1 }, { PINID_SSP1_CMD, PIN_FUN1, PIN_8MA, PIN_3_3V, 1 }, { PINID_SSP1_SCK, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, { PINID_SSP1_DETECT, PIN_FUN1, PIN_8MA, PIN_3_3V, 0 }, }; static struct pin_group mmc_pins = { .pins = mmc_pins_desc, .nr_pins = ARRAY_SIZE(mmc_pins_desc), }; static int stmp3xxxmmc_get_wp(void) { return gpio_get_value(PINID_PWM4); } static int stmp3xxxmmc_hw_init_ssp1(void) { int ret; ret = stmp3xxx_request_pin_group(&mmc_pins, "mmc"); if (ret) goto out; /* Configure write protect GPIO pin */ ret = gpio_request(PINID_PWM4, "mmc wp"); if (ret) goto out_wp; gpio_direction_input(PINID_PWM4); /* Configure POWER pin as gpio to drive power to MMC slot */ ret = gpio_request(PINID_PWM3, "mmc power"); if (ret) goto out_power; gpio_direction_output(PINID_PWM3, 0); mdelay(100); return 0; out_power: gpio_free(PINID_PWM4); out_wp: stmp3xxx_release_pin_group(&mmc_pins, "mmc"); out: return ret; } static void stmp3xxxmmc_hw_release_ssp1(void) { gpio_free(PINID_PWM3); gpio_free(PINID_PWM4); stmp3xxx_release_pin_group(&mmc_pins, "mmc"); } static void stmp3xxxmmc_cmd_pullup_ssp1(int enable) { stmp3xxx_pin_pullup(PINID_SSP1_CMD, enable, "mmc"); } static unsigned long stmp3xxxmmc_setclock_ssp1(void __iomem *base, unsigned long hz) { struct clk *ssp, *parent; char *p; long r; ssp = clk_get(NULL, "ssp"); /* using SSP1, no timeout, clock rate 1 */ writel(BF(2, SSP_TIMING_CLOCK_DIVIDE) | BF(0xFFFF, SSP_TIMING_TIMEOUT), base + HW_SSP_TIMING); p = (hz > 1000000) ? "io" : "osc_24M"; parent = clk_get(NULL, p); clk_set_parent(ssp, parent); r = clk_set_rate(ssp, 2 * hz / 1000); clk_put(parent); clk_put(ssp); return hz; } static struct stmp3xxxmmc_platform_data mmc_data = { .hw_init = stmp3xxxmmc_hw_init_ssp1, .hw_release = stmp3xxxmmc_hw_release_ssp1, .get_wp = stmp3xxxmmc_get_wp, .cmd_pullup = stmp3xxxmmc_cmd_pullup_ssp1, .setclock = stmp3xxxmmc_setclock_ssp1, }; static struct pin_group appuart_pins[] = { [0] = { .pins = appuart_pins_0, .nr_pins = ARRAY_SIZE(appuart_pins_0), }, [1] = { .pins = appuart_pins_1, .nr_pins = ARRAY_SIZE(appuart_pins_1), }, }; static struct pin_desc ssp1_pins_desc[] = { { PINID_SSP1_SCK, PIN_FUN1, PIN_8MA, PIN_3_3V, 0, }, { PINID_SSP1_CMD, PIN_FUN1, PIN_4MA, PIN_3_3V, 0, }, { PINID_SSP1_DATA0, PIN_FUN1, PIN_4MA, PIN_3_3V, 0, }, { PINID_SSP1_DATA3, PIN_FUN1, PIN_4MA, PIN_3_3V, 0, }, }; static struct pin_desc ssp2_pins_desc[] = { { PINID_GPMI_WRN, PIN_FUN3, PIN_8MA, PIN_3_3V, 0, }, { PINID_GPMI_RDY1, PIN_FUN3, PIN_4MA, PIN_3_3V, 0, }, { PINID_GPMI_D00, PIN_FUN3, PIN_4MA, PIN_3_3V, 0, }, { PINID_GPMI_D03, PIN_FUN3, PIN_4MA, PIN_3_3V, 0, }, }; static struct pin_group ssp1_pins = { .pins = ssp1_pins_desc, .nr_pins = ARRAY_SIZE(ssp1_pins_desc), }; static struct pin_group ssp2_pins = { .pins = ssp1_pins_desc, .nr_pins = ARRAY_SIZE(ssp2_pins_desc), }; static struct pin_desc gpmi_pins_desc[] = { { PINID_GPMI_CE0N, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_CE1N, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GMPI_CE2N, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_CLE, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_ALE, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_WPN, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, { PINID_GPMI_RDY1, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_D00, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_D01, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_D02, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_D03, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_D04, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_D05, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_D06, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_D07, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_RDY0, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_RDY2, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_RDY3, PIN_FUN1, PIN_4MA, PIN_3_3V, 0 }, { PINID_GPMI_WRN, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, { PINID_GPMI_RDN, PIN_FUN1, PIN_12MA, PIN_3_3V, 0 }, }; static struct pin_group gpmi_pins = { .pins = gpmi_pins_desc, .nr_pins = ARRAY_SIZE(gpmi_pins_desc), }; static struct mtd_partition gpmi_partitions[] = { [0] = { .name = "boot", .size = 10 * SZ_1M, .offset = 0, }, [1] = { .name = "data", .size = MTDPART_SIZ_FULL, .offset = MTDPART_OFS_APPEND, }, }; static struct gpmi_platform_data gpmi_data = { .pins = &gpmi_pins, .nr_parts = ARRAY_SIZE(gpmi_partitions), .parts = gpmi_partitions, .part_types = { "cmdline", NULL }, }; static struct spi_board_info spi_board_info[] __initdata = { #if defined(CONFIG_ENC28J60) || defined(CONFIG_ENC28J60_MODULE) { .modalias = "enc28j60", .max_speed_hz = 6 * 1000 * 1000, .bus_num = 1, .chip_select = 0, .platform_data = NULL, }, #endif }; static void __init stmp378x_devb_init(void) { stmp3xxx_pinmux_init(NR_REAL_IRQS); /* init stmp3xxx platform */ stmp3xxx_init(); stmp3xxx_dbguart.dev.platform_data = dbguart_pins_control; stmp3xxx_appuart.dev.platform_data = appuart_pins; stmp3xxx_mmc.dev.platform_data = &mmc_data; stmp3xxx_gpmi.dev.platform_data = &gpmi_data; stmp3xxx_spi1.dev.platform_data = &ssp1_pins; stmp3xxx_spi2.dev.platform_data = &ssp2_pins; stmp378x_i2c.dev.platform_data = &i2c_pins; /* register spi devices */ spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); /* add board's devices */ platform_add_devices(devices, ARRAY_SIZE(devices)); /* add devices selected by command line ssp1= and ssp2= options */ stmp3xxx_ssp1_device_register(); stmp3xxx_ssp2_device_register(); } MACHINE_START(STMP378X, "STMP378X") .boot_params = 0x40000100, .map_io = stmp378x_map_io, .init_irq = stmp378x_init_irq, .timer = &stmp3xxx_timer, .init_machine = stmp378x_devb_init, MACHINE_END