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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
Linus Torvalds
parent
04d699c364
commit
864f38ebdc
@ -289,6 +289,13 @@ config MACH_NEOCORE926
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help
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Select this if you are using the Adeneo Neocore 926 board.
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config MACH_AT91SAM9G20EK_2MMC
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bool "Atmel AT91SAM9G20-EK Evaluation Kit modified for 2 MMC Slots"
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depends on ARCH_AT91SAM9G20
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help
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Select this if you are using an Atmel AT91SAM9G20-EK Evaluation Kit
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Rev A or B modified for 2 MMC Slots.
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endif
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# ----------------------------------------------------------
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@ -59,6 +59,7 @@ obj-$(CONFIG_MACH_AT91SAM9RLEK) += board-sam9rlek.o
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# AT91SAM9G20 board-specific support
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obj-$(CONFIG_MACH_AT91SAM9G20EK) += board-sam9g20ek.o
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obj-$(CONFIG_MACH_AT91SAM9G20EK_2MMC) += board-sam9g20ek-2slot-mmc.o
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obj-$(CONFIG_MACH_CPU9G20) += board-cpu9krea.o
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# AT91SAM9G45 board-specific support
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@ -278,6 +278,102 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
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void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* MMC / SD Slot for Atmel MCI Driver
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* -------------------------------------------------------------------- */
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#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
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static u64 mmc_dmamask = DMA_BIT_MASK(32);
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static struct mci_platform_data mmc_data;
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static struct resource mmc_resources[] = {
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[0] = {
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.start = AT91SAM9260_BASE_MCI,
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.end = AT91SAM9260_BASE_MCI + SZ_16K - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = AT91SAM9260_ID_MCI,
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.end = AT91SAM9260_ID_MCI,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device at91sam9260_mmc_device = {
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.name = "atmel_mci",
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.id = -1,
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.dev = {
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.dma_mask = &mmc_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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.platform_data = &mmc_data,
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},
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.resource = mmc_resources,
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.num_resources = ARRAY_SIZE(mmc_resources),
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};
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void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
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{
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unsigned int i;
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unsigned int slot_count = 0;
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if (!data)
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return;
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for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) {
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if (data->slot[i].bus_width) {
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/* input/irq */
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if (data->slot[i].detect_pin) {
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at91_set_gpio_input(data->slot[i].detect_pin, 1);
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at91_set_deglitch(data->slot[i].detect_pin, 1);
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}
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if (data->slot[i].wp_pin)
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at91_set_gpio_input(data->slot[i].wp_pin, 1);
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switch (i) {
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case 0:
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/* CMD */
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at91_set_A_periph(AT91_PIN_PA7, 1);
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/* DAT0, maybe DAT1..DAT3 */
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at91_set_A_periph(AT91_PIN_PA6, 1);
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if (data->slot[i].bus_width == 4) {
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at91_set_A_periph(AT91_PIN_PA9, 1);
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at91_set_A_periph(AT91_PIN_PA10, 1);
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at91_set_A_periph(AT91_PIN_PA11, 1);
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}
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slot_count++;
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break;
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case 1:
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/* CMD */
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at91_set_B_periph(AT91_PIN_PA1, 1);
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/* DAT0, maybe DAT1..DAT3 */
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at91_set_B_periph(AT91_PIN_PA0, 1);
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if (data->slot[i].bus_width == 4) {
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at91_set_B_periph(AT91_PIN_PA5, 1);
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at91_set_B_periph(AT91_PIN_PA4, 1);
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at91_set_B_periph(AT91_PIN_PA3, 1);
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}
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slot_count++;
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break;
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default:
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printk(KERN_ERR
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"AT91: SD/MMC slot %d not available\n", i);
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break;
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}
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}
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}
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if (slot_count) {
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/* CLK */
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at91_set_A_periph(AT91_PIN_PA8, 0);
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mmc_data = *data;
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platform_device_register(&at91sam9260_mmc_device);
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}
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}
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#else
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void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) {}
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#endif
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/* --------------------------------------------------------------------
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* NAND / SmartMedia
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277
arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c
Normal file
277
arch/arm/mach-at91/board-sam9g20ek-2slot-mmc.c
Normal file
@ -0,0 +1,277 @@
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/*
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* Copyright (C) 2005 SAN People
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* Copyright (C) 2008 Atmel
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* Copyright (C) 2009 Rob Emanuele
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/at73c213.h>
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#include <linux/clk.h>
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#include <mach/hardware.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <mach/board.h>
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#include <mach/gpio.h>
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#include <mach/at91sam9_smc.h>
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#include "sam9_smc.h"
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#include "generic.h"
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static void __init ek_map_io(void)
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{
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/* Initialize processor: 18.432 MHz crystal */
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at91sam9260_initialize(18432000);
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/* DGBU on ttyS0. (Rx & Tx only) */
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at91_register_uart(0, 0, 0);
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/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
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at91_register_uart(AT91SAM9260_ID_US0, 1, ATMEL_UART_CTS | ATMEL_UART_RTS
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| ATMEL_UART_DTR | ATMEL_UART_DSR | ATMEL_UART_DCD
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| ATMEL_UART_RI);
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/* USART1 on ttyS2. (Rx, Tx, RTS, CTS) */
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at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
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/* set serial console to ttyS0 (ie, DBGU) */
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at91_set_serial_console(0);
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}
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static void __init ek_init_irq(void)
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{
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at91sam9260_init_interrupts(NULL);
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}
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/*
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* USB Host port
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*/
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static struct at91_usbh_data __initdata ek_usbh_data = {
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.ports = 2,
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};
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/*
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* USB Device port
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*/
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static struct at91_udc_data __initdata ek_udc_data = {
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.vbus_pin = AT91_PIN_PC5,
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.pullup_pin = 0, /* pull-up driven by UDC */
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};
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/*
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* SPI devices.
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*/
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static struct spi_board_info ek_spi_devices[] = {
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#if !defined(CONFIG_MMC_ATMELMCI)
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{ /* DataFlash chip */
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.modalias = "mtd_dataflash",
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.chip_select = 1,
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.max_speed_hz = 15 * 1000 * 1000,
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.bus_num = 0,
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},
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#if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
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{ /* DataFlash card */
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.modalias = "mtd_dataflash",
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.chip_select = 0,
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.max_speed_hz = 15 * 1000 * 1000,
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.bus_num = 0,
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},
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#endif
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#endif
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};
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/*
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* MACB Ethernet device
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*/
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static struct at91_eth_data __initdata ek_macb_data = {
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.phy_irq_pin = AT91_PIN_PC12,
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.is_rmii = 1,
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};
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/*
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* NAND flash
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*/
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static struct mtd_partition __initdata ek_nand_partition[] = {
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{
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.name = "Bootstrap",
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.offset = 0,
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.size = 4 * SZ_1M,
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},
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{
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.name = "Partition 1",
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.offset = MTDPART_OFS_NXTBLK,
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.size = 60 * SZ_1M,
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},
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{
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.name = "Partition 2",
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.offset = MTDPART_OFS_NXTBLK,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
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{
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*num_partitions = ARRAY_SIZE(ek_nand_partition);
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return ek_nand_partition;
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}
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/* det_pin is not connected */
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static struct atmel_nand_data __initdata ek_nand_data = {
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.ale = 21,
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.cle = 22,
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.rdy_pin = AT91_PIN_PC13,
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.enable_pin = AT91_PIN_PC14,
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.partition_info = nand_partitions,
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#if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
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.bus_width_16 = 1,
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#else
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.bus_width_16 = 0,
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#endif
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};
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static struct sam9_smc_config __initdata ek_nand_smc_config = {
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.ncs_read_setup = 0,
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.nrd_setup = 2,
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.ncs_write_setup = 0,
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.nwe_setup = 2,
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.ncs_read_pulse = 4,
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.nrd_pulse = 4,
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.ncs_write_pulse = 4,
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.nwe_pulse = 4,
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.read_cycle = 7,
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.write_cycle = 7,
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.mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
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.tdf_cycles = 3,
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};
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static void __init ek_add_device_nand(void)
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{
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/* setup bus-width (8 or 16) */
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if (ek_nand_data.bus_width_16)
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ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
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else
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ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
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/* configure chip-select 3 (NAND) */
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sam9_smc_configure(3, &ek_nand_smc_config);
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at91_add_device_nand(&ek_nand_data);
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}
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/*
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* MCI (SD/MMC)
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* det_pin and wp_pin are not connected
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*/
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#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE)
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static struct mci_platform_data __initdata ek_mmc_data = {
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.slot[0] = {
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.bus_width = 4,
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.detect_pin = -ENODEV,
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.wp_pin = -ENODEV,
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},
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.slot[1] = {
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.bus_width = 4,
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.detect_pin = -ENODEV,
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.wp_pin = -ENODEV,
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},
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};
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#else
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static struct amci_platform_data __initdata ek_mmc_data = {
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};
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#endif
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/*
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* LEDs
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*/
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static struct gpio_led ek_leds[] = {
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{ /* "bottom" led, green, userled1 to be defined */
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.name = "ds5",
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.gpio = AT91_PIN_PB12,
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.active_low = 1,
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.default_trigger = "none",
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},
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{ /* "power" led, yellow */
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.name = "ds1",
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.gpio = AT91_PIN_PB13,
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.default_trigger = "heartbeat",
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}
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};
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static struct i2c_board_info __initdata ek_i2c_devices[] = {
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{
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I2C_BOARD_INFO("24c512", 0x50),
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},
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};
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static void __init ek_board_init(void)
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{
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/* Serial */
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at91_add_device_serial();
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/* USB Host */
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at91_add_device_usbh(&ek_usbh_data);
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/* USB Device */
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at91_add_device_udc(&ek_udc_data);
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/* SPI */
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at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
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/* NAND */
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ek_add_device_nand();
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/* Ethernet */
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at91_add_device_eth(&ek_macb_data);
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/* MMC */
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at91_add_device_mci(0, &ek_mmc_data);
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/* I2C */
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at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));
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/* LEDs */
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at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
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/* PCK0 provides MCLK to the WM8731 */
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at91_set_B_periph(AT91_PIN_PC1, 0);
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/* SSC (for WM8731) */
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at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
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}
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MACHINE_START(AT91SAM9G20EK_2MMC, "Atmel AT91SAM9G20-EK 2 MMC Slot Mod")
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/* Maintainer: Rob Emanuele */
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.phys_io = AT91_BASE_SYS,
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.io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
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.boot_params = AT91_SDRAM_BASE + 0x100,
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.timer = &at91sam926x_timer,
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.map_io = ek_map_io,
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.init_irq = ek_init_irq,
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.init_machine = ek_board_init,
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MACHINE_END
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@ -37,6 +37,7 @@
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#include <linux/leds.h>
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#include <linux/spi/spi.h>
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#include <linux/usb/atmel_usba_udc.h>
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#include <linux/atmel-mci.h>
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#include <sound/atmel-ac97c.h>
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/* USB Device */
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@ -64,6 +65,7 @@ struct at91_cf_data {
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extern void __init at91_add_device_cf(struct at91_cf_data *data);
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/* MMC / SD */
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/* at91_mci platform config */
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struct at91_mmc_data {
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u8 det_pin; /* card detect IRQ */
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unsigned slot_b:1; /* uses Slot B */
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@ -73,6 +75,9 @@ struct at91_mmc_data {
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};
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extern void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data);
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/* atmel-mci platform config */
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extern void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data);
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/* Ethernet (EMAC & MACB) */
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struct at91_eth_data {
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u32 phy_mask;
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