333 lines
8.6 KiB
C
333 lines
8.6 KiB
C
/*
|
|
* 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
|