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>

5 files changed, 70 insertions, 336 deletions

diff --git a/arch/arm/configs/at91sam9g20ek_defconfig b/arch/arm/configs/at91sam9g20ek_defconfig
index f1bac70d6ce9..9e90e6d79297 100644
--- a/arch/arm/configs/at91sam9g20ek_defconfig
+++ b/arch/arm/configs/at91sam9g20ek_defconfig
@@ -13,6 +13,7 @@ CONFIG_MODULE_UNLOAD=y
 CONFIG_ARCH_AT91=y
 CONFIG_ARCH_AT91SAM9G20=y
 CONFIG_MACH_AT91SAM9G20EK=y
+CONFIG_MACH_AT91SAM9G20EK_2MMC=y
 CONFIG_AT91_PROGRAMMABLE_CLOCKS=y
 # CONFIG_ARM_THUMB is not set
 CONFIG_AEABI=y
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 7b6ae6d274b4..23bf5c2c0fab 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -338,6 +338,7 @@ config MACH_AT91SAM9G20EK
           that embeds only one SD/MMC slot.
 
 config MACH_AT91SAM9G20EK_2MMC
+        depends on MACH_AT91SAM9G20EK
         bool "Atmel AT91SAM9G20-EK Evaluation Kit with 2 SD/MMC Slots"
         select HAVE_NAND_ATMEL_BUSWIDTH_16
         help
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 585ede048966..3a07a3696441 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -61,7 +61,6 @@ obj-$(CONFIG_MACH_AT91SAM9RLEK)	+= board-sam9rlek.o
 
 # AT91SAM9G20 board-specific support
 obj-$(CONFIG_MACH_AT91SAM9G20EK) += board-sam9g20ek.o
-obj-$(CONFIG_MACH_AT91SAM9G20EK_2MMC) += board-sam9g20ek-2slot-mmc.o
 obj-$(CONFIG_MACH_CPU9G20)      += board-cpu9krea.o
 obj-$(CONFIG_MACH_STAMP9G20)    += board-stamp9g20.o
 obj-$(CONFIG_MACH_PORTUXG20)    += board-stamp9g20.o
diff --git a/arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c b/arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c
deleted file mode 100644
index c49f5c003ee1..000000000000
--- a/arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c
+++ /dev/null
@@ -1,329 +0,0 @@
-/*
- *  Copyright (C) 2005 SAN People
- *  Copyright (C) 2008 Atmel
- *  Copyright (C) 2009 Rob Emanuele
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/spi/spi.h>
-#include <linux/spi/at73c213.h>
-#include <linux/clk.h>
-#include <linux/regulator/machine.h>
-#include <linux/regulator/fixed.h>
-#include <linux/regulator/consumer.h>
-
-#include <mach/hardware.h>
-#include <asm/setup.h>
-#include <asm/mach-types.h>
-#include <asm/irq.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-#include <asm/mach/irq.h>
-
-#include <mach/board.h>
-#include <mach/gpio.h>
-#include <mach/at91sam9_smc.h>
-
-#include "sam9_smc.h"
-#include "generic.h"
-
-
-static void __init ek_map_io(void)
-{
-        /* Initialize processor: 18.432 MHz crystal */
-        at91sam9260_initialize(18432000);
-
-        /* DGBU on ttyS0. (Rx & Tx only) */
-        at91_register_uart(0, 0, 0);
-
-        /* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
-        at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
-                           | ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
-                           | ATMEL_UART_RI);
-
-        /* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
-        at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
-
-        /* set serial console to ttyS0 (ie, DBGU) */
-        at91_set_serial_console(0);
-}
-
-static void __init ek_init_irq(void)
-{
-        at91sam9260_init_interrupts(NULL);
-}
-
-
-/*
- * USB Host port
- */
-static struct at91_usbh_data __initdata ek_usbh_data = {
-        .ports          = 2,
-};
-
-/*
- * USB Device port
- */
-static struct at91_udc_data __initdata ek_udc_data = {
-        .vbus_pin       = AT91_PIN_PC5,
-        .pullup_pin     = 0,            /* pull-up driven by UDC */
-};
-
-
-/*
- * SPI devices.
- */
-static struct spi_board_info ek_spi_devices[] = {
-#if !(defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_AT91))
-        {       /* DataFlash chip */
-                .modalias       = "mtd_dataflash",
-                .chip_select    = 1,
-                .max_speed_hz   = 15 * 1000 * 1000,
-                .bus_num        = 0,
-        },
-#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
-        {       /* DataFlash card */
-                .modalias       = "mtd_dataflash",
-                .chip_select    = 0,
-                .max_speed_hz   = 15 * 1000 * 1000,
-                .bus_num        = 0,
-        },
-#endif
-#endif
-};
-
-
-/*
- * MACB Ethernet device
- */
-static struct at91_eth_data __initdata ek_macb_data = {
-        .phy_irq_pin    = AT91_PIN_PB0,
-        .is_rmii        = 1,
-};
-
-
-/*
- * NAND flash
- */
-static struct mtd_partition __initdata ek_nand_partition[] = {
-        {
-                .name   = "Bootstrap",
-                .offset = 0,
-                .size   = 4 * SZ_1M,
-        },
-        {
-                .name   = "Partition 1",
-                .offset = MTDPART_OFS_NXTBLK,
-                .size   = 60 * SZ_1M,
-        },
-        {
-                .name   = "Partition 2",
-                .offset = MTDPART_OFS_NXTBLK,
-                .size   = MTDPART_SIZ_FULL,
-        },
-};
-
-static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
-{
-        *num_partitions = ARRAY_SIZE(ek_nand_partition);
-        return ek_nand_partition;
-}
-
-/* det_pin is not connected */
-static struct atmel_nand_data __initdata ek_nand_data = {
-        .ale            = 21,
-        .cle            = 22,
-        .rdy_pin        = AT91_PIN_PC13,
-        .enable_pin     = AT91_PIN_PC14,
-        .partition_info = nand_partitions,
-#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
-        .bus_width_16   = 1,
-#else
-        .bus_width_16   = 0,
-#endif
-};
-
-static struct sam9_smc_config __initdata ek_nand_smc_config = {
-        .ncs_read_setup         = 0,
-        .nrd_setup              = 2,
-        .ncs_write_setup        = 0,
-        .nwe_setup              = 2,
-
-        .ncs_read_pulse         = 4,
-        .nrd_pulse              = 4,
-        .ncs_write_pulse        = 4,
-        .nwe_pulse              = 4,
-
-        .read_cycle             = 7,
-        .write_cycle            = 7,
-
-        .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
-        .tdf_cycles             = 3,
-};
-
-static void __init ek_add_device_nand(void)
-{
-        /* setup bus-width (8 or 16) */
-        if (ek_nand_data.bus_width_16)
-                ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
-        else
-                ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
-
-        /* configure chip-select 3 (NAND) */
-        sam9_smc_configure(3, &ek_nand_smc_config);
-
-        at91_add_device_nand(&ek_nand_data);
-}
-
-
-/*
- * MCI (SD/MMC)
- * wp_pin is not connected
- */
-#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
-static struct mci_platform_data __initdata ek_mmc_data = {
-        .slot[0] = {
-                .bus_width      = 4,
-                .detect_pin     = AT91_PIN_PC2,
-                .wp_pin         = -ENODEV,
-        },
-        .slot[1] = {
-                .bus_width      = 4,
-                .detect_pin     = AT91_PIN_PC9,
-                .wp_pin         = -ENODEV,
-        },
-
-};
-#else
-static struct at91_mmc_data __initdata ek_mmc_data = {
-        .slot_b         = 1,    /* Only one slot so use slot B */
-        .wire4          = 1,
-        .det_pin        = AT91_PIN_PC9,
-};
-#endif
-
-/*
- * LEDs
- */
-static struct gpio_led ek_leds[] = {
-        {       /* "bottom" led, green, userled1 to be defined */
-                .name                   = "ds5",
-                .gpio                   = AT91_PIN_PB8,
-                .active_low             = 1,
-                .default_trigger        = "none",
-        },
-        {       /* "power" led, yellow */
-                .name                   = "ds1",
-                .gpio                   = AT91_PIN_PB9,
-                .default_trigger        = "heartbeat",
-        }
-};
-
-#if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
-static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
-        REGULATOR_SUPPLY("AVDD", "0-001b"),
-        REGULATOR_SUPPLY("HPVDD", "0-001b"),
-        REGULATOR_SUPPLY("DBVDD", "0-001b"),
-        REGULATOR_SUPPLY("DCVDD", "0-001b"),
-};
-
-static struct regulator_init_data ek_avdd_reg_init_data = {
-        .constraints    = {
-                .name   = "3V3",
-                .valid_ops_mask = REGULATOR_CHANGE_STATUS,
-        },
-        .consumer_supplies = ek_audio_consumer_supplies,
-        .num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
-};
-
-static struct fixed_voltage_config ek_vdd_pdata = {
-        .supply_name    = "board-3V3",
-        .microvolts     = 3300000,
-        .gpio           = -EINVAL,
-        .enabled_at_boot = 0,
-        .init_data      = &ek_avdd_reg_init_data,
-};
-static struct platform_device ek_voltage_regulator = {
-        .name           = "reg-fixed-voltage",
-        .id             = -1,
-        .num_resources  = 0,
-        .dev            = {
-                .platform_data  = &ek_vdd_pdata,
-        },
-};
-static void __init ek_add_regulators(void)
-{
-        platform_device_register(&ek_voltage_regulator);
-}
-#else
-static void __init ek_add_regulators(void) {}
-#endif
-
-static struct i2c_board_info __initdata ek_i2c_devices[] = {
-        {
-                I2C_BOARD_INFO("24c512", 0x50),
-        },
-};
-
-
-static void __init ek_board_init(void)
-{
-        /* Serial */
-        at91_add_device_serial();
-        /* USB Host */
-        at91_add_device_usbh(&ek_usbh_data);
-        /* USB Device */
-        at91_add_device_udc(&ek_udc_data);
-        /* SPI */
-        at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
-        /* NAND */
-        ek_add_device_nand();
-        /* Ethernet */
-        at91_add_device_eth(&ek_macb_data);
-        /* Regulators */
-        ek_add_regulators();
-        /* MMC */
-#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
-        at91_add_device_mci(0, &ek_mmc_data);
-#else
-        at91_add_device_mmc(0, &ek_mmc_data);
-#endif
-        /* I2C */
-        at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
-        /* LEDs */
-        at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
-        /* PCK0 provides MCLK to the WM8731 */
-        at91_set_B_periph(AT91_PIN_PC1, 0);
-        /* SSC (for WM8731) */
-        at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
-}
-
-MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
-        /* Maintainer: Rob Emanuele */
-        .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
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