Skip to content

Commit

Permalink
[ARM] 5539/1: Freescale STMP: onboard devices declaration
Browse files Browse the repository at this point in the history 
Define onboard devices for Freescale STMP3xxx boards

Signed-off-by: dmitry pervushin <dpervushin@embeddedalley.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
  • Loading branch information
dmitry pervushin authored and Russell King committed Jun 4, 2009
1 parent a50808b commit c11c221
Show file tree
Hide file tree
Showing 9 changed files with 771 additions and 2 deletions.
61 changes: 61 additions & 0 deletions arch/arm/mach-stmp378x/stmp378x.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/dma-mapping.h>

#include <asm/dma.h>
#include <asm/setup.h>
Expand All @@ -39,6 +40,8 @@
#include <mach/regs-icoll.h>
#include <mach/regs-apbh.h>
#include <mach/regs-apbx.h>
#include <mach/regs-pxp.h>
#include <mach/regs-i2c.h>

#include "stmp378x.h"
/*
Expand Down Expand Up @@ -232,6 +235,64 @@ static struct map_desc stmp378x_io_desc[] __initdata = {
},
};


static u64 common_dmamask = DMA_BIT_MASK(32);

/*
* devices that are present only on stmp378x, not on all 3xxx boards:
* PxP
* I2C
*/
static struct resource pxp_resource[] = {
{
.flags = IORESOURCE_MEM,
.start = REGS_PXP_PHYS,
.end = REGS_PXP_PHYS + REGS_PXP_SIZE,
}, {
.flags = IORESOURCE_IRQ,
.start = IRQ_PXP,
.end = IRQ_PXP,
},
};

struct platform_device stmp378x_pxp = {
.name = "stmp3xxx-pxp",
.id = -1,
.dev = {
.dma_mask = &common_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = ARRAY_SIZE(pxp_resource),
.resource = pxp_resource,
};

static struct resource i2c_resources[] = {
{
.flags = IORESOURCE_IRQ,
.start = IRQ_I2C_ERROR,
.end = IRQ_I2C_ERROR,
}, {
.flags = IORESOURCE_MEM,
.start = REGS_I2C_PHYS,
.end = REGS_I2C_PHYS + REGS_I2C_SIZE,
}, {
.flags = IORESOURCE_DMA,
.start = STMP3XXX_DMA(3, STMP3XXX_BUS_APBX),
.end = STMP3XXX_DMA(3, STMP3XXX_BUS_APBX),
},
};

struct platform_device stmp378x_i2c = {
.name = "i2c_stmp3xxx",
.id = 0,
.dev = {
.dma_mask = &common_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.resource = i2c_resources,
.num_resources = ARRAY_SIZE(i2c_resources),
};

void __init stmp378x_map_io(void)
{
iotable_init(stmp378x_io_desc, ARRAY_SIZE(stmp378x_io_desc));
Expand Down
1 change: 1 addition & 0 deletions arch/arm/mach-stmp378x/stmp378x.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -21,4 +21,5 @@
void stmp378x_map_io(void);
void stmp378x_init_irq(void);

extern struct platform_device stmp378x_pxp, stmp378x_i2c;
#endif /* __MACH_STMP378X_COMMON_H */
254 changes: 254 additions & 0 deletions arch/arm/mach-stmp378x/stmp378x_devb.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -17,20 +17,52 @@
*/
#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[] = {
Expand All @@ -56,6 +88,215 @@ static int dbguart_pins_control(int id, int request)
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);
Expand All @@ -64,9 +305,22 @@ static void __init stmp378x_devb_init(void)
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")
Expand Down
Loading

0 comments on commit c11c221

Please sign in to comment.