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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2010-09-21 20:01:37 +0400
committerNicolas Ferre <nicolas.ferre@atmel.com>2010-10-07 21:56:31 +0400
commita6e016f19d393fbe4e040bee8155b03b840fa689 (patch)
treeb68b4a7d8c999a75b0693f7f82b8083e5508ad3f /arch/arm/mach-at91/board-sam9g20ek.c
parent9a400da84ffe7205b9921c87ac24069217442c84 (diff)
downloadlinux-a6e016f19d393fbe4e040bee8155b03b840fa689.tar.xz
AT91: at91sam9g20ek: merge 2mmc version in one board
The board-sam9g20ek-2slot-mmc.c was a revision of the at91sam9g20ek since board revision C. It contains 2 sd/mmc slots. This merge keep the support of the old machine ID MACH_AT91SAM9G20EK_2MMC for backward compatibility. Now we use the ATAG to pass the hardware functionality to kernel with this board revision encoding bit 0: 0 => 1 sd/mmc slot 1 => 2 sd/mmc slots connectors (board from revision C) system_rev tested on Barebox commit d8f3ee103a9f4bd Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91/board-sam9g20ek.c')
-rw-r--r--arch/arm/mach-at91/board-sam9g20ek.c74
1 files changed, 68 insertions, 6 deletions
diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c
index 6ea9808b8868..b463e340c4a0 100644
--- a/arch/arm/mach-at91/board-sam9g20ek.c
+++ b/arch/arm/mach-at91/board-sam9g20ek.c
@@ -47,6 +47,18 @@
#include "sam9_smc.h"
#include "generic.h"
+/*
+ * board revision encoding
+ * bit 0:
+ * 0 => 1 sd/mmc slot
+ * 1 => 2 sd/mmc slots connectors (board from revision C)
+ */
+#define HAVE_2MMC (1 << 0)
+static int inline ek_have_2mmc(void)
+{
+ return machine_is_at91sam9g20ek_2mmc() || (system_rev & HAVE_2MMC);
+}
+
static void __init ek_map_io(void)
{
@@ -94,7 +106,7 @@ static struct at91_udc_data __initdata ek_udc_data = {
* SPI devices.
*/
static struct spi_board_info ek_spi_devices[] = {
-#if !defined(CONFIG_MMC_AT91)
+#if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
{ /* DataFlash chip */
.modalias = "mtd_dataflash",
.chip_select = 1,
@@ -121,6 +133,13 @@ static struct at91_eth_data __initdata ek_macb_data = {
.is_rmii = 1,
};
+static void __init ek_add_device_macb(void)
+{
+ if (ek_have_2mmc())
+ ek_macb_data.phy_irq_pin = AT91_PIN_PB0;
+
+ at91_add_device_eth(&ek_macb_data);
+}
/*
* NAND flash
@@ -198,13 +217,36 @@ static void __init ek_add_device_nand(void)
/*
* MCI (SD/MMC)
- * det_pin, wp_pin and vcc_pin are not connected
+ * wp_pin and vcc_pin are not connected
*/
+#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
+static struct mci_platform_data __initdata ek_mmc_data = {
+ .slot[1] = {
+ .bus_width = 4,
+ .detect_pin = AT91_PIN_PC9,
+ },
+
+};
+#else
static struct at91_mmc_data __initdata ek_mmc_data = {
- .slot_b = 1,
+ .slot_b = 1, /* Only one slot so use slot B */
.wire4 = 1,
+ .det_pin = AT91_PIN_PC9,
};
+#endif
+static void __init ek_add_device_mmc(void)
+{
+#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
+ if (ek_have_2mmc()) {
+ ek_mmc_data.slot[0].bus_width = 4;
+ ek_mmc_data.slot[0].detect_pin = AT91_PIN_PC2;
+ }
+ at91_add_device_mci(0, &ek_mmc_data);
+#else
+ at91_add_device_mmc(0, &ek_mmc_data);
+#endif
+}
/*
* LEDs
@@ -223,6 +265,15 @@ static struct gpio_led ek_leds[] = {
}
};
+static void __init ek_add_device_gpio_leds(void)
+{
+ if (ek_have_2mmc()) {
+ ek_leds[0].gpio = AT91_PIN_PB8;
+ ek_leds[1].gpio = AT91_PIN_PB9;
+ }
+
+ at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
+}
/*
* GPIO Buttons
@@ -336,15 +387,15 @@ static void __init ek_board_init(void)
/* NAND */
ek_add_device_nand();
/* Ethernet */
- at91_add_device_eth(&ek_macb_data);
+ ek_add_device_macb();
/* Regulators */
ek_add_regulators();
/* MMC */
- at91_add_device_mmc(0, &ek_mmc_data);
+ ek_add_device_mmc();
/* I2C */
at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
/* LEDs */
- at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
+ ek_add_device_gpio_leds();
/* Push Buttons */
ek_add_device_buttons();
/* PCK0 provides MCLK to the WM8731 */
@@ -363,3 +414,14 @@ MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK")
.init_irq = ek_init_irq,
.init_machine = ek_board_init,
MACHINE_END
+
+MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
+ /* Maintainer: Atmel */
+ .phys_io = AT91_BASE_SYS,
+ .io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
+ .boot_params = AT91_SDRAM_BASE + 0x100,
+ .timer = &at91sam926x_timer,
+ .map_io = ek_map_io,
+ .init_irq = ek_init_irq,
+ .init_machine = ek_board_init,
+MACHINE_END