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author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2010-09-21 20:01:37 +0400 |
---|---|---|
committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2010-10-07 21:56:31 +0400 |
commit | a6e016f19d393fbe4e040bee8155b03b840fa689 (patch) | |
tree | b68b4a7d8c999a75b0693f7f82b8083e5508ad3f /arch/arm/mach-at91/board-sam9g20ek.c | |
parent | 9a400da84ffe7205b9921c87ac24069217442c84 (diff) | |
download | linux-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.c | 74 |
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 |