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[ARM] 3966/1: AT91: RM9200 device data update
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This patch contains various updates the at91rm9200_devices.c file:
      * Consistent naming of resources and platform_devices.
      * PCMCIA/Compact Flash: Configuration of the memory controller
        moved out of the driver and into this file.
      * MMC: Enable the VCC pin (if one is configured)
      * MMC: Enable the internal pullups on the I/O pins.
      * NAND: Configuration of the memory controller moved out of the
        driver and into this file.
      * Added TWI/I2C resources.
      * The names of some of the CONFIG_ variables were changed.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Andrew Victor authored and Russell King committed Dec 1, 2006
1 parent 58a0cd7 commit 69c5ecc
Showing 1 changed file with 110 additions and 48 deletions.
158 changes: 110 additions & 48 deletions arch/arm/mach-at91rm9200/at91rm9200_devices.c
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Original file line number Diff line number Diff line change
Expand Up @@ -15,9 +15,10 @@

#include <linux/platform_device.h>

#include <asm/hardware.h>
#include <asm/arch/board.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91rm9200.h>
#include <asm/arch/at91rm9200_mc.h>

#include "generic.h"

Expand All @@ -33,7 +34,7 @@
static u64 ohci_dmamask = 0xffffffffUL;
static struct at91_usbh_data usbh_data;

static struct resource at91_usbh_resources[] = {
static struct resource usbh_resources[] = {
[0] = {
.start = AT91RM9200_UHP_BASE,
.end = AT91RM9200_UHP_BASE + SZ_1M - 1,
Expand All @@ -54,8 +55,8 @@ static struct platform_device at91rm9200_usbh_device = {
.coherent_dma_mask = 0xffffffff,
.platform_data = &usbh_data,
},
.resource = at91_usbh_resources,
.num_resources = ARRAY_SIZE(at91_usbh_resources),
.resource = usbh_resources,
.num_resources = ARRAY_SIZE(usbh_resources),
};

void __init at91_add_device_usbh(struct at91_usbh_data *data)
Expand All @@ -78,7 +79,7 @@ void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
#ifdef CONFIG_USB_GADGET_AT91
static struct at91_udc_data udc_data;

static struct resource at91_udc_resources[] = {
static struct resource udc_resources[] = {
[0] = {
.start = AT91RM9200_BASE_UDP,
.end = AT91RM9200_BASE_UDP + SZ_16K - 1,
Expand All @@ -97,8 +98,8 @@ static struct platform_device at91rm9200_udc_device = {
.dev = {
.platform_data = &udc_data,
},
.resource = at91_udc_resources,
.num_resources = ARRAY_SIZE(at91_udc_resources),
.resource = udc_resources,
.num_resources = ARRAY_SIZE(udc_resources),
};

void __init at91_add_device_udc(struct at91_udc_data *data)
Expand Down Expand Up @@ -129,7 +130,7 @@ void __init at91_add_device_udc(struct at91_udc_data *data) {}
static u64 eth_dmamask = 0xffffffffUL;
static struct at91_eth_data eth_data;

static struct resource at91_eth_resources[] = {
static struct resource eth_resources[] = {
[0] = {
.start = AT91_VA_BASE_EMAC,
.end = AT91_VA_BASE_EMAC + SZ_16K - 1,
Expand All @@ -150,8 +151,8 @@ static struct platform_device at91rm9200_eth_device = {
.coherent_dma_mask = 0xffffffff,
.platform_data = &eth_data,
},
.resource = at91_eth_resources,
.num_resources = ARRAY_SIZE(at91_eth_resources),
.resource = eth_resources,
.num_resources = ARRAY_SIZE(eth_resources),
};

void __init at91_add_device_eth(struct at91_eth_data *data)
Expand Down Expand Up @@ -202,11 +203,13 @@ void __init at91_add_device_eth(struct at91_eth_data *data) {}
#if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
static struct at91_cf_data cf_data;

static struct resource at91_cf_resources[] = {
#define CF_BASE AT91_CHIPSELECT_4

static struct resource cf_resources[] = {
[0] = {
.start = AT91_CF_BASE,
.start = CF_BASE,
/* ties up CS4, CS5 and CS6 */
.end = AT91_CF_BASE + (0x30000000 - 1),
.end = CF_BASE + (0x30000000 - 1),
.flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
},
};
Expand All @@ -217,15 +220,38 @@ static struct platform_device at91rm9200_cf_device = {
.dev = {
.platform_data = &cf_data,
},
.resource = at91_cf_resources,
.num_resources = ARRAY_SIZE(at91_cf_resources),
.resource = cf_resources,
.num_resources = ARRAY_SIZE(cf_resources),
};

void __init at91_add_device_cf(struct at91_cf_data *data)
{
unsigned int csa;

if (!data)
return;

data->chipselect = 4; /* can only use EBI ChipSelect 4 */

/* CF takes over CS4, CS5, CS6 */
csa = at91_sys_read(AT91_EBI_CSA);
at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);

/*
* Static memory controller timing adjustments.
* REVISIT: these timings are in terms of MCK cycles, so
* when MCK changes (cpufreq etc) so must these values...
*/
at91_sys_write(AT91_SMC_CSR(4),
AT91_SMC_ACSS_STD
| AT91_SMC_DBW_16
| AT91_SMC_BAT
| AT91_SMC_WSEN
| AT91_SMC_NWS_(32) /* wait states */
| AT91_SMC_RWSETUP_(6) /* setup time */
| AT91_SMC_RWHOLD_(4) /* hold time */
);

/* input/irq */
if (data->irq_pin) {
at91_set_gpio_input(data->irq_pin, 1);
Expand All @@ -245,6 +271,9 @@ void __init at91_add_device_cf(struct at91_cf_data *data)
at91_set_A_periph(AT91_PIN_PC11, 0); /* NCS5/CFCE1 */
at91_set_A_periph(AT91_PIN_PC12, 0); /* NCS6/CFCE2 */

/* nWAIT is _not_ a default setting */
at91_set_A_periph(AT91_PIN_PC6, 1); /* nWAIT */

cf_data = *data;
platform_device_register(&at91rm9200_cf_device);
}
Expand All @@ -257,11 +286,11 @@ void __init at91_add_device_cf(struct at91_cf_data *data) {}
* MMC / SD
* -------------------------------------------------------------------- */

#if defined(CONFIG_MMC_AT91RM9200) || defined(CONFIG_MMC_AT91RM9200_MODULE)
#if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
static u64 mmc_dmamask = 0xffffffffUL;
static struct at91_mmc_data mmc_data;

static struct resource at91_mmc_resources[] = {
static struct resource mmc_resources[] = {
[0] = {
.start = AT91RM9200_BASE_MCI,
.end = AT91RM9200_BASE_MCI + SZ_16K - 1,
Expand All @@ -282,8 +311,8 @@ static struct platform_device at91rm9200_mmc_device = {
.coherent_dma_mask = 0xffffffff,
.platform_data = &mmc_data,
},
.resource = at91_mmc_resources,
.num_resources = ARRAY_SIZE(at91_mmc_resources),
.resource = mmc_resources,
.num_resources = ARRAY_SIZE(mmc_resources),
};

void __init at91_add_device_mmc(struct at91_mmc_data *data)
Expand All @@ -298,31 +327,33 @@ void __init at91_add_device_mmc(struct at91_mmc_data *data)
}
if (data->wp_pin)
at91_set_gpio_input(data->wp_pin, 1);
if (data->vcc_pin)
at91_set_gpio_output(data->vcc_pin, 0);

/* CLK */
at91_set_A_periph(AT91_PIN_PA27, 0);

if (data->is_b) {
if (data->slot_b) {
/* CMD */
at91_set_B_periph(AT91_PIN_PA8, 0);
at91_set_B_periph(AT91_PIN_PA8, 1);

/* DAT0, maybe DAT1..DAT3 */
at91_set_B_periph(AT91_PIN_PA9, 0);
at91_set_B_periph(AT91_PIN_PA9, 1);
if (data->wire4) {
at91_set_B_periph(AT91_PIN_PA10, 0);
at91_set_B_periph(AT91_PIN_PA11, 0);
at91_set_B_periph(AT91_PIN_PA12, 0);
at91_set_B_periph(AT91_PIN_PA10, 1);
at91_set_B_periph(AT91_PIN_PA11, 1);
at91_set_B_periph(AT91_PIN_PA12, 1);
}
} else {
/* CMD */
at91_set_A_periph(AT91_PIN_PA28, 0);
at91_set_A_periph(AT91_PIN_PA28, 1);

/* DAT0, maybe DAT1..DAT3 */
at91_set_A_periph(AT91_PIN_PA29, 0);
at91_set_A_periph(AT91_PIN_PA29, 1);
if (data->wire4) {
at91_set_B_periph(AT91_PIN_PB3, 0);
at91_set_B_periph(AT91_PIN_PB4, 0);
at91_set_B_periph(AT91_PIN_PB5, 0);
at91_set_B_periph(AT91_PIN_PB3, 1);
at91_set_B_periph(AT91_PIN_PB4, 1);
at91_set_B_periph(AT91_PIN_PB5, 1);
}
}

Expand All @@ -341,29 +372,45 @@ void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
#if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
static struct at91_nand_data nand_data;

static struct resource at91_nand_resources[] = {
#define NAND_BASE AT91_CHIPSELECT_3

static struct resource nand_resources[] = {
{
.start = AT91_SMARTMEDIA_BASE,
.end = AT91_SMARTMEDIA_BASE + SZ_8M - 1,
.start = NAND_BASE,
.end = NAND_BASE + SZ_8M - 1,
.flags = IORESOURCE_MEM,
}
};

static struct platform_device at91_nand_device = {
static struct platform_device at91rm9200_nand_device = {
.name = "at91_nand",
.id = -1,
.dev = {
.platform_data = &nand_data,
},
.resource = at91_nand_resources,
.num_resources = ARRAY_SIZE(at91_nand_resources),
.resource = nand_resources,
.num_resources = ARRAY_SIZE(nand_resources),
};

void __init at91_add_device_nand(struct at91_nand_data *data)
{
unsigned int csa;

if (!data)
return;

/* enable the address range of CS3 */
csa = at91_sys_read(AT91_EBI_CSA);
at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);

/* set the bus interface characteristics */
at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
| AT91_SMC_NWS_(5)
| AT91_SMC_TDF_(1)
| AT91_SMC_RWSETUP_(0) /* tDS Data Set up Time 30 - ns */
| AT91_SMC_RWHOLD_(1) /* tDH Data Hold Time 20 - ns */
);

/* enable pin */
if (data->enable_pin)
at91_set_gpio_output(data->enable_pin, 1);
Expand All @@ -380,7 +427,7 @@ void __init at91_add_device_nand(struct at91_nand_data *data)
at91_set_A_periph(AT91_PIN_PC3, 0); /* SMWE */

nand_data = *data;
platform_device_register(&at91_nand_device);
platform_device_register(&at91rm9200_nand_device);
}
#else
void __init at91_add_device_nand(struct at91_nand_data *data) {}
Expand All @@ -392,10 +439,25 @@ void __init at91_add_device_nand(struct at91_nand_data *data) {}
* -------------------------------------------------------------------- */

#if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)

static struct resource twi_resources[] = {
[0] = {
.start = AT91RM9200_BASE_TWI,
.end = AT91RM9200_BASE_TWI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91RM9200_ID_TWI,
.end = AT91RM9200_ID_TWI,
.flags = IORESOURCE_IRQ,
},
};

static struct platform_device at91rm9200_twi_device = {
.name = "at91_i2c",
.id = -1,
.num_resources = 0,
.resource = twi_resources,
.num_resources = ARRAY_SIZE(twi_resources),
};

void __init at91_add_device_i2c(void)
Expand All @@ -421,7 +483,7 @@ void __init at91_add_device_i2c(void) {}
#if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
static u64 spi_dmamask = 0xffffffffUL;

static struct resource at91_spi_resources[] = {
static struct resource spi_resources[] = {
[0] = {
.start = AT91RM9200_BASE_SPI,
.end = AT91RM9200_BASE_SPI + SZ_16K - 1,
Expand All @@ -438,14 +500,14 @@ static struct platform_device at91rm9200_spi_device = {
.name = "at91_spi",
.id = 0,
.dev = {
.dma_mask = &spi_dmamask,
.coherent_dma_mask = 0xffffffff,
.dma_mask = &spi_dmamask,
.coherent_dma_mask = 0xffffffff,
},
.resource = at91_spi_resources,
.num_resources = ARRAY_SIZE(at91_spi_resources),
.resource = spi_resources,
.num_resources = ARRAY_SIZE(spi_resources),
};

static const unsigned at91_spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
static const unsigned spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };

void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
{
Expand All @@ -461,7 +523,7 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
if (devices[i].controller_data)
cs_pin = (unsigned long) devices[i].controller_data;
else
cs_pin = at91_spi_standard_cs[devices[i].chip_select];
cs_pin = spi_standard_cs[devices[i].chip_select];

#ifdef CONFIG_SPI_AT91_MANUAL_CS
at91_set_gpio_output(cs_pin, 1);
Expand All @@ -474,7 +536,7 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
}

spi_register_board_info(devices, nr_devices);
at91_clock_associate("spi0_clk", &at91rm9200_spi_device.dev, "spi");
at91_clock_associate("spi_clk", &at91rm9200_spi_device.dev, "spi");
platform_device_register(&at91rm9200_spi_device);
}
#else
Expand All @@ -486,7 +548,7 @@ void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
* RTC
* -------------------------------------------------------------------- */

#if defined(CONFIG_RTC_DRV_AT91) || defined(CONFIG_RTC_DRV_AT91_MODULE)
#if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
static struct platform_device at91rm9200_rtc_device = {
.name = "at91_rtc",
.id = -1,
Expand All @@ -506,7 +568,7 @@ static void __init at91_add_device_rtc(void) {}
* Watchdog
* -------------------------------------------------------------------- */

#if defined(CONFIG_AT91_WATCHDOG) || defined(CONFIG_AT91_WATCHDOG_MODULE)
#if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
static struct platform_device at91rm9200_wdt_device = {
.name = "at91_wdt",
.id = -1,
Expand Down

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