| /* |
| * 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 |