forked from Minki/linux
71b149b3f7
There is no need to pinmux the UART so early in the kernel. Move it to the board init. This will also allow to finally move the gpio driver to platform device/driver. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
379 lines
8.8 KiB
C
379 lines
8.8 KiB
C
/*
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* linux/arch/arm/mach-at91/board-usb-a926x.c
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*
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* Copyright (C) 2005 SAN People
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* Copyright (C) 2007 Atmel Corporation.
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* Copyright (C) 2007 Calao-systems
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* Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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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/gpio_keys.h>
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#include <linux/gpio.h>
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#include <linux/input.h>
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#include <linux/spi/mmc_spi.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/hardware.h>
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#include <mach/board.h>
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#include <mach/at91sam9_smc.h>
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#include <mach/at91_shdwc.h>
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#include "sam9_smc.h"
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#include "generic.h"
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static void __init ek_init_early(void)
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{
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/* Initialize processor: 12.00 MHz crystal */
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at91_initialize(12000000);
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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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.vbus_pin = {-EINVAL, -EINVAL},
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.overcurrent_pin= {-EINVAL, -EINVAL},
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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_PB11,
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.pullup_pin = -EINVAL, /* pull-up driven by UDC */
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};
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static void __init ek_add_device_udc(void)
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{
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if (machine_is_usb_a9260() || machine_is_usb_a9g20())
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ek_udc_data.vbus_pin = AT91_PIN_PC5;
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at91_add_device_udc(&ek_udc_data);
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}
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#if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
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#define MMC_SPI_CARD_DETECT_INT AT91_PIN_PC4
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static int at91_mmc_spi_init(struct device *dev,
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irqreturn_t (*detect_int)(int, void *), void *data)
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{
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/* Configure Interrupt pin as input, no pull-up */
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at91_set_gpio_input(MMC_SPI_CARD_DETECT_INT, 0);
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return request_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), detect_int,
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IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
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"mmc-spi-detect", data);
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}
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static void at91_mmc_spi_exit(struct device *dev, void *data)
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{
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free_irq(gpio_to_irq(MMC_SPI_CARD_DETECT_INT), data);
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}
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static struct mmc_spi_platform_data at91_mmc_spi_pdata = {
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.init = at91_mmc_spi_init,
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.exit = at91_mmc_spi_exit,
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.detect_delay = 100, /* msecs */
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};
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#endif
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/*
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* SPI devices.
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*/
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static struct spi_board_info usb_a9263_spi_devices[] = {
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#if !defined(CONFIG_MMC_AT91)
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{ /* DataFlash chip */
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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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};
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static struct spi_board_info usb_a9g20_spi_devices[] = {
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#if defined(CONFIG_MMC_SPI) || defined(CONFIG_MMC_SPI_MODULE)
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{
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.modalias = "mmc_spi",
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.max_speed_hz = 20000000, /* max spi clock (SCK) speed in HZ */
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.bus_num = 1,
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.chip_select = 0,
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.platform_data = &at91_mmc_spi_pdata,
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.mode = SPI_MODE_3,
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},
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#endif
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};
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static void __init ek_add_device_spi(void)
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{
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if (machine_is_usb_a9263())
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at91_add_device_spi(usb_a9263_spi_devices, ARRAY_SIZE(usb_a9263_spi_devices));
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else if (machine_is_usb_a9g20())
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at91_add_device_spi(usb_a9g20_spi_devices, ARRAY_SIZE(usb_a9g20_spi_devices));
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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 macb_platform_data __initdata ek_macb_data = {
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.phy_irq_pin = AT91_PIN_PE31,
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.is_rmii = 1,
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};
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static void __init ek_add_device_eth(void)
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{
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if (machine_is_usb_a9260() || machine_is_usb_a9g20())
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ek_macb_data.phy_irq_pin = AT91_PIN_PA31;
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at91_add_device_eth(&ek_macb_data);
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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 = "barebox",
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.offset = 0,
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.size = 3 * SZ_128K,
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}, {
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.name = "bareboxenv",
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.offset = MTDPART_OFS_NXTBLK,
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.size = SZ_128K,
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}, {
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.name = "bareboxenv2",
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.offset = MTDPART_OFS_NXTBLK,
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.size = SZ_128K,
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}, {
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.name = "kernel",
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.offset = MTDPART_OFS_NXTBLK,
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.size = 4 * SZ_1M,
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}, {
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.name = "rootfs",
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.offset = MTDPART_OFS_NXTBLK,
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.size = 120 * SZ_1M,
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}, {
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.name = "data",
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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 atmel_nand_data __initdata ek_nand_data = {
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.ale = 21,
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.cle = 22,
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.det_pin = -EINVAL,
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.rdy_pin = AT91_PIN_PA22,
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.enable_pin = AT91_PIN_PD15,
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.ecc_mode = NAND_ECC_SOFT,
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.on_flash_bbt = 1,
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.parts = ek_nand_partition,
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.num_parts = ARRAY_SIZE(ek_nand_partition),
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};
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static struct sam9_smc_config __initdata usb_a9260_nand_smc_config = {
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.ncs_read_setup = 0,
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.nrd_setup = 1,
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.ncs_write_setup = 0,
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.nwe_setup = 1,
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.ncs_read_pulse = 3,
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.nrd_pulse = 3,
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.ncs_write_pulse = 3,
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.nwe_pulse = 3,
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.read_cycle = 5,
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.write_cycle = 5,
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.mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_DBW_8,
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.tdf_cycles = 2,
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};
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static struct sam9_smc_config __initdata usb_a9g20_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 | AT91_SMC_DBW_8,
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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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if (machine_is_usb_a9260() || machine_is_usb_a9g20()) {
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ek_nand_data.rdy_pin = AT91_PIN_PC13;
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ek_nand_data.enable_pin = AT91_PIN_PC14;
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}
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/* configure chip-select 3 (NAND) */
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if (machine_is_usb_a9g20())
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sam9_smc_configure(0, 3, &usb_a9g20_nand_smc_config);
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else
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sam9_smc_configure(0, 3, &usb_a9260_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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* GPIO Buttons
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*/
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#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
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static struct gpio_keys_button ek_buttons[] = {
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{ /* USER PUSH BUTTON */
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.code = KEY_ENTER,
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.gpio = AT91_PIN_PB10,
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.active_low = 1,
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.desc = "user_pb",
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.wakeup = 1,
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}
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};
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static struct gpio_keys_platform_data ek_button_data = {
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.buttons = ek_buttons,
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.nbuttons = ARRAY_SIZE(ek_buttons),
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};
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static struct platform_device ek_button_device = {
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.name = "gpio-keys",
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.id = -1,
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.num_resources = 0,
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.dev = {
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.platform_data = &ek_button_data,
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}
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};
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static void __init ek_add_device_buttons(void)
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{
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at91_set_GPIO_periph(AT91_PIN_PB10, 1); /* user push button, pull up enabled */
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at91_set_deglitch(AT91_PIN_PB10, 1);
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platform_device_register(&ek_button_device);
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}
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#else
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static void __init ek_add_device_buttons(void) {}
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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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{ /* user_led (green) */
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.name = "user_led",
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.gpio = AT91_PIN_PB21,
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.active_low = 1,
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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("rv3029c2", 0x56),
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},
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};
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static void __init ek_add_device_leds(void)
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{
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if (machine_is_usb_a9260() || machine_is_usb_a9g20())
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ek_leds[0].active_low = 0;
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at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
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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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/* DBGU on ttyS0. (Rx & Tx only) */
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at91_register_uart(0, 0, 0);
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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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ek_add_device_udc();
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/* SPI */
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ek_add_device_spi();
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/* Ethernet */
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ek_add_device_eth();
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/* NAND */
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ek_add_device_nand();
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/* Push Buttons */
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ek_add_device_buttons();
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/* LEDs */
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ek_add_device_leds();
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if (machine_is_usb_a9g20()) {
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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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} else {
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/* I2C */
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at91_add_device_i2c(NULL, 0);
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/* shutdown controller, wakeup button (5 msec low) */
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at91_shdwc_write(AT91_SHDW_MR, AT91_SHDW_CPTWK0_(10)
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| AT91_SHDW_WKMODE0_LOW
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| AT91_SHDW_RTTWKEN);
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}
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}
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MACHINE_START(USB_A9263, "CALAO USB_A9263")
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/* Maintainer: calao-systems */
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.timer = &at91sam926x_timer,
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.map_io = at91_map_io,
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.init_early = ek_init_early,
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.init_irq = at91_init_irq_default,
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.init_machine = ek_board_init,
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MACHINE_END
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MACHINE_START(USB_A9260, "CALAO USB_A9260")
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/* Maintainer: calao-systems */
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.timer = &at91sam926x_timer,
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.map_io = at91_map_io,
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.init_early = ek_init_early,
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.init_irq = at91_init_irq_default,
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.init_machine = ek_board_init,
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MACHINE_END
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MACHINE_START(USB_A9G20, "CALAO USB_A92G0")
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/* Maintainer: Jean-Christophe PLAGNIOL-VILLARD */
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.timer = &at91sam926x_timer,
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.map_io = at91_map_io,
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.init_early = ek_init_early,
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.init_irq = at91_init_irq_default,
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.init_machine = ek_board_init,
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MACHINE_END
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