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authorAndrew Victor <andrew@sanpeople.com>2006-12-01 15:53:20 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-12-01 16:56:44 +0000
commit69c5eccd164200a17b5a24e594b37958d39d2933 (patch)
treea293b139e14bdd5ecfd019cf3337374e32871217
parent58a0cd7887cd689ae42540dd12b3b3131abfbe6c (diff)
downloadlinux-2.6.34-ux500-69c5eccd164200a17b5a24e594b37958d39d2933.tar.gz
[ARM] 3966/1: AT91: RM9200 device data update
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>
-rw-r--r--arch/arm/mach-at91rm9200/at91rm9200_devices.c158
1 files changed, 110 insertions, 48 deletions
diff --git a/arch/arm/mach-at91rm9200/at91rm9200_devices.c b/arch/arm/mach-at91rm9200/at91rm9200_devices.c
index 2b3a23605bf..4641b99db0e 100644
--- a/arch/arm/mach-at91rm9200/at91rm9200_devices.c
+++ b/arch/arm/mach-at91rm9200/at91rm9200_devices.c
@@ -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"
@@ -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,
@@ -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)
@@ -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,
@@ -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)
@@ -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,
@@ -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)
@@ -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,
},
};
@@ -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);
@@ -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);
}
@@ -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,
@@ -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)
@@ -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);
}
}
@@ -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);
@@ -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) {}
@@ -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)
@@ -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,
@@ -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)
{
@@ -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);
@@ -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
@@ -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,
@@ -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,