AT91: atmel-mci: Platform configuration to the the atmel-mci driver

Created a modified version of the at91sam9g20 evaluation kit platform
(board-sam9g20ek-2slot-mmc.c) and device support to make use of the
updated atmel-mci driver.

As the use of two slots modify GPIO pin allocation, we create another
board file.

This requires getting the most updated arch/arm/tools/mach-types from
http://www.arm.linux.org.uk/developer/machines/download.php to have the machine
type for the at91sam9g20ek-2slot-mmc board.

[nicolas.ferre@atmel.com: printk, slot_count modification in at91sam9260_devices.c file]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Rob Emanuele <rob@emanuele.us>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rob Emanuele 2009-09-22 16:45:22 -07:00 committed by Linus Torvalds
parent 04d699c364
commit 864f38ebdc
5 changed files with 386 additions and 0 deletions

View File

@ -289,6 +289,13 @@ config MACH_NEOCORE926
help
Select this if you are using the Adeneo Neocore 926 board.
config MACH_AT91SAM9G20EK_2MMC
bool "Atmel AT91SAM9G20-EK Evaluation Kit modified for 2 MMC Slots"
depends on ARCH_AT91SAM9G20
help
Select this if you are using an Atmel AT91SAM9G20-EK Evaluation Kit
Rev A or B modified for 2 MMC Slots.
endif
# ----------------------------------------------------------

View File

@ -59,6 +59,7 @@ 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
# AT91SAM9G45 board-specific support

View File

@ -278,6 +278,102 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
#endif
/* --------------------------------------------------------------------
* MMC / SD Slot for Atmel MCI Driver
* -------------------------------------------------------------------- */
#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
static u64 mmc_dmamask = DMA_BIT_MASK(32);
static struct mci_platform_data mmc_data;
static struct resource mmc_resources[] = {
[0] = {
.start = AT91SAM9260_BASE_MCI,
.end = AT91SAM9260_BASE_MCI + SZ_16K - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = AT91SAM9260_ID_MCI,
.end = AT91SAM9260_ID_MCI,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device at91sam9260_mmc_device = {
.name = "atmel_mci",
.id = -1,
.dev = {
.dma_mask = &mmc_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &mmc_data,
},
.resource = mmc_resources,
.num_resources = ARRAY_SIZE(mmc_resources),
};
void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
{
unsigned int i;
unsigned int slot_count = 0;
if (!data)
return;
for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
if (data->slot[i].bus_width) {
/* input/irq */
if (data->slot[i].detect_pin) {
at91_set_gpio_input(data->slot[i].detect_pin, 1);
at91_set_deglitch(data->slot[i].detect_pin, 1);
}
if (data->slot[i].wp_pin)
at91_set_gpio_input(data->slot[i].wp_pin, 1);
switch (i) {
case 0:
/* CMD */
at91_set_A_periph(AT91_PIN_PA7, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_A_periph(AT91_PIN_PA6, 1);
if (data->slot[i].bus_width == 4) {
at91_set_A_periph(AT91_PIN_PA9, 1);
at91_set_A_periph(AT91_PIN_PA10, 1);
at91_set_A_periph(AT91_PIN_PA11, 1);
}
slot_count++;
break;
case 1:
/* CMD */
at91_set_B_periph(AT91_PIN_PA1, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_B_periph(AT91_PIN_PA0, 1);
if (data->slot[i].bus_width == 4) {
at91_set_B_periph(AT91_PIN_PA5, 1);
at91_set_B_periph(AT91_PIN_PA4, 1);
at91_set_B_periph(AT91_PIN_PA3, 1);
}
slot_count++;
break;
default:
printk(KERN_ERR
"AT91: SD/MMC slot %d not available\n", i);
break;
}
}
}
if (slot_count) {
/* CLK */
at91_set_A_periph(AT91_PIN_PA8, 0);
mmc_data = *data;
platform_device_register(&at91sam9260_mmc_device);
}
}
#else
void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) {}
#endif
/* --------------------------------------------------------------------
* NAND / SmartMedia

View File

@ -0,0 +1,277 @@
/*
* 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 <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)
{ /* 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_PC12,
.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)
* det_pin and wp_pin are 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 = -ENODEV,
.wp_pin = -ENODEV,
},
.slot[1] = {
.bus_width = 4,
.detect_pin = -ENODEV,
.wp_pin = -ENODEV,
},
};
#else
static struct amci_platform_data __initdata ek_mmc_data = {
};
#endif
/*
* LEDs
*/
static struct gpio_led ek_leds[] = {
{ /* "bottom" led, green, userled1 to be defined */
.name = "ds5",
.gpio = AT91_PIN_PB12,
.active_low = 1,
.default_trigger = "none",
},
{ /* "power" led, yellow */
.name = "ds1",
.gpio = AT91_PIN_PB13,
.default_trigger = "heartbeat",
}
};
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);
/* MMC */
at91_add_device_mci(0, &ek_mmc_data);
/* 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

View File

@ -37,6 +37,7 @@
#include <linux/leds.h>
#include <linux/spi/spi.h>
#include <linux/usb/atmel_usba_udc.h>
#include <linux/atmel-mci.h>
#include <sound/atmel-ac97c.h>
/* USB Device */
@ -64,6 +65,7 @@ struct at91_cf_data {
extern void __init at91_add_device_cf(struct at91_cf_data *data);
/* MMC / SD */
/* at91_mci platform config */
struct at91_mmc_data {
u8 det_pin; /* card detect IRQ */
unsigned slot_b:1; /* uses Slot B */
@ -73,6 +75,9 @@ struct at91_mmc_data {
};
extern void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data);
/* atmel-mci platform config */
extern void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data);
/* Ethernet (EMAC & MACB) */
struct at91_eth_data {
u32 phy_mask;