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2d798a3f20
Fix regression introduced by commit d2323cf773 ("onewire: w1-gpio: add
ext_pullup_enable pin in platform data") which added a gpio entry to the
platform data, but did not add the required initialisers to the board
files using it. Consequently, the driver would request gpio 0 at probe,
which could break other uses of the corresponding pin.
On AT91 requesting gpio 0 changes the pin muxing for PIOA0, which, for
instance, breaks SPI0 on at91sam9g20.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
272 lines
6.4 KiB
C
272 lines
6.4 KiB
C
/*
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* Copyright (C) 2005 SAN People
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* Copyright (C) 2008 Atmel
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* Copyright (C) 2010 Lee McLoughlin - lee@lmmrtech.com
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* Copyright (C) 2010 Sergio Tanzilli - tanzilli@acmesystems.it
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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/gpio.h>
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#include <linux/gpio_keys.h>
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#include <linux/input.h>
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#include <linux/clk.h>
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#include <linux/w1-gpio.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/at91sam9_smc.h>
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#include "at91_aic.h"
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#include "board.h"
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#include "sam9_smc.h"
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#include "generic.h"
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/*
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* The FOX Board G20 hardware comes as the "Netus G20" board with
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* just the cpu, ram, dataflash and two header connectors.
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* This is plugged into the FOX Board which provides the ethernet,
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* usb, rtc, leds, switch, ...
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*
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* For more info visit: http://www.acmesystems.it/foxg20
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*/
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static void __init foxg20_init_early(void)
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{
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/* Initialize processor: 18.432 MHz crystal */
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at91_initialize(18432000);
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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 foxg20_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 foxg20_udc_data = {
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.vbus_pin = AT91_PIN_PC6,
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.pullup_pin = -EINVAL, /* 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 foxg20_spi_devices[] = {
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#if !IS_ENABLED(CONFIG_MMC_ATMELMCI)
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{
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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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#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 macb_platform_data __initdata foxg20_macb_data = {
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.phy_irq_pin = AT91_PIN_PA7,
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.is_rmii = 1,
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};
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/*
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* MCI (SD/MMC)
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* det_pin, wp_pin and vcc_pin are not connected
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*/
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static struct mci_platform_data __initdata foxg20_mci0_data = {
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.slot[1] = {
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.bus_width = 4,
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.detect_pin = -EINVAL,
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.wp_pin = -EINVAL,
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},
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};
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/*
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* LEDs
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*/
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static struct gpio_led foxg20_leds[] = {
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{ /* user led, red */
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.name = "user_led",
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.gpio = AT91_PIN_PC7,
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.active_low = 0,
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.default_trigger = "heartbeat",
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},
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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 foxg20_buttons[] = {
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{
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.gpio = AT91_PIN_PC4,
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.code = BTN_1,
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.desc = "Button 1",
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.active_low = 1,
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.wakeup = 1,
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},
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};
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static struct gpio_keys_platform_data foxg20_button_data = {
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.buttons = foxg20_buttons,
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.nbuttons = ARRAY_SIZE(foxg20_buttons),
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};
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static struct platform_device foxg20_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 = &foxg20_button_data,
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}
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};
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static void __init foxg20_add_device_buttons(void)
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{
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at91_set_gpio_input(AT91_PIN_PC4, 1); /* btn1 */
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at91_set_deglitch(AT91_PIN_PC4, 1);
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platform_device_register(&foxg20_button_device);
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}
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#else
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static void __init foxg20_add_device_buttons(void) {}
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#endif
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#if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
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static struct w1_gpio_platform_data w1_gpio_pdata = {
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/* If you choose to use a pin other than PB16 it needs to be 3.3V */
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.pin = AT91_PIN_PB16,
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.is_open_drain = 1,
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.ext_pullup_enable_pin = -EINVAL,
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};
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static struct platform_device w1_device = {
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.name = "w1-gpio",
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.id = -1,
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.dev.platform_data = &w1_gpio_pdata,
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};
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static void __init at91_add_device_w1(void)
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{
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at91_set_GPIO_periph(w1_gpio_pdata.pin, 1);
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at91_set_multi_drive(w1_gpio_pdata.pin, 1);
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platform_device_register(&w1_device);
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}
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#endif
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static struct i2c_board_info __initdata foxg20_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 foxg20_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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/* USART0 on ttyS1. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
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at91_register_uart(AT91SAM9260_ID_US0, 1,
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ATMEL_UART_CTS
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| ATMEL_UART_RTS
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| ATMEL_UART_DTR
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| ATMEL_UART_DSR
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| 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,
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ATMEL_UART_CTS
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| ATMEL_UART_RTS);
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/* USART2 on ttyS3. (Rx & Tx only) */
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at91_register_uart(AT91SAM9260_ID_US2, 3, 0);
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/* USART3 on ttyS4. (Rx, Tx, RTS, CTS) */
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at91_register_uart(AT91SAM9260_ID_US3, 4,
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ATMEL_UART_CTS
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| ATMEL_UART_RTS);
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/* USART4 on ttyS5. (Rx & Tx only) */
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at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
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/* USART5 on ttyS6. (Rx & Tx only) */
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at91_register_uart(AT91SAM9260_ID_US5, 6, 0);
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/* Set the internal pull-up resistor on DRXD */
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at91_set_A_periph(AT91_PIN_PB14, 1);
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at91_add_device_serial();
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/* USB Host */
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at91_add_device_usbh(&foxg20_usbh_data);
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/* USB Device */
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at91_add_device_udc(&foxg20_udc_data);
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/* SPI */
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at91_add_device_spi(foxg20_spi_devices, ARRAY_SIZE(foxg20_spi_devices));
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/* Ethernet */
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at91_add_device_eth(&foxg20_macb_data);
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/* MMC */
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at91_add_device_mci(0, &foxg20_mci0_data);
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/* I2C */
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at91_add_device_i2c(foxg20_i2c_devices, ARRAY_SIZE(foxg20_i2c_devices));
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/* LEDs */
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at91_gpio_leds(foxg20_leds, ARRAY_SIZE(foxg20_leds));
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/* Push Buttons */
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foxg20_add_device_buttons();
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#if defined(CONFIG_W1_MASTER_GPIO) || defined(CONFIG_W1_MASTER_GPIO_MODULE)
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at91_add_device_w1();
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#endif
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}
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MACHINE_START(ACMENETUSFOXG20, "Acme Systems srl FOX Board G20")
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/* Maintainer: Sergio Tanzilli */
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.init_time = at91sam926x_pit_init,
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.map_io = at91_map_io,
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.handle_irq = at91_aic_handle_irq,
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.init_early = foxg20_init_early,
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.init_irq = at91_init_irq_default,
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.init_machine = foxg20_board_init,
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MACHINE_END
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