mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 06:36:44 +07:00
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>
293 lines
6.6 KiB
C
293 lines
6.6 KiB
C
/*
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* Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
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* taskit GmbH
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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/mm.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/w1-gpio.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.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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void __init stamp9g20_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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* NAND flash
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*/
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static struct atmel_nand_data __initdata 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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.bus_width_16 = 0,
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.det_pin = -EINVAL,
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.ecc_mode = NAND_ECC_SOFT,
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};
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static struct sam9_smc_config __initdata 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 add_device_nand(void)
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{
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/* configure chip-select 3 (NAND) */
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sam9_smc_configure(0, 3, &nand_smc_config);
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at91_add_device_nand(&nand_data);
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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 mmc_data = {
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.slot[0] = {
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.bus_width = 4,
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.detect_pin = -1,
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.wp_pin = -1,
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},
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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 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 portuxg20_udc_data = {
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.vbus_pin = AT91_PIN_PC7,
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.pullup_pin = -EINVAL, /* pull-up driven by UDC */
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};
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static struct at91_udc_data __initdata stamp9g20evb_udc_data = {
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.vbus_pin = AT91_PIN_PA22,
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.pullup_pin = -EINVAL, /* pull-up driven by UDC */
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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 macb_data = {
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.phy_irq_pin = AT91_PIN_PA28,
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.is_rmii = 1,
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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 portuxg20_leds[] = {
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{
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.name = "LED2",
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.gpio = AT91_PIN_PC5,
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.default_trigger = "none",
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}, {
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.name = "LED3",
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.gpio = AT91_PIN_PC4,
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.default_trigger = "none",
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}, {
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.name = "LED4",
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.gpio = AT91_PIN_PC10,
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.default_trigger = "heartbeat",
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}
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};
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static struct gpio_led stamp9g20evb_leds[] = {
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{
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.name = "D8",
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.gpio = AT91_PIN_PB18,
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.active_low = 1,
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.default_trigger = "none",
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}, {
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.name = "D9",
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.gpio = AT91_PIN_PB19,
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.active_low = 1,
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.default_trigger = "none",
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}, {
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.name = "D10",
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.gpio = AT91_PIN_PB20,
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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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/*
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* SPI devices
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*/
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static struct spi_board_info portuxg20_spi_devices[] = {
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{
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.modalias = "spidev",
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.chip_select = 0,
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.max_speed_hz = 1 * 1000 * 1000,
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.bus_num = 0,
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}, {
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.modalias = "spidev",
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.chip_select = 0,
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.max_speed_hz = 1 * 1000 * 1000,
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.bus_num = 1,
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},
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};
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/*
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* Dallas 1-Wire
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*/
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static struct w1_gpio_platform_data w1_gpio_pdata = {
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.pin = AT91_PIN_PA29,
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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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void add_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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void __init stamp9g20_board_init(void)
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{
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/* Serial */
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/* DGBU 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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/* NAND */
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add_device_nand();
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/* MMC */
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at91_add_device_mci(0, &mmc_data);
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/* W1 */
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add_w1();
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}
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static void __init portuxg20_board_init(void)
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{
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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
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| ATMEL_UART_DCD | ATMEL_UART_RI);
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/* USART1 on ttyS2. (Rx, Tx, CTS, RTS) */
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at91_register_uart(AT91SAM9260_ID_US1, 2, ATMEL_UART_CTS | ATMEL_UART_RTS);
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/* USART2 on ttyS3. (Rx, Tx, CTS, RTS) */
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at91_register_uart(AT91SAM9260_ID_US2, 3, ATMEL_UART_CTS | 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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stamp9g20_board_init();
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/* USB Host */
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at91_add_device_usbh(&usbh_data);
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/* USB Device */
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at91_add_device_udc(&portuxg20_udc_data);
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/* Ethernet */
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at91_add_device_eth(&macb_data);
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/* I2C */
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at91_add_device_i2c(NULL, 0);
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/* SPI */
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at91_add_device_spi(portuxg20_spi_devices, ARRAY_SIZE(portuxg20_spi_devices));
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/* LEDs */
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at91_gpio_leds(portuxg20_leds, ARRAY_SIZE(portuxg20_leds));
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}
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static void __init stamp9g20evb_board_init(void)
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{
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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
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| ATMEL_UART_DCD | ATMEL_UART_RI);
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stamp9g20_board_init();
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/* USB Host */
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at91_add_device_usbh(&usbh_data);
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/* USB Device */
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at91_add_device_udc(&stamp9g20evb_udc_data);
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/* Ethernet */
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at91_add_device_eth(&macb_data);
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/* I2C */
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at91_add_device_i2c(NULL, 0);
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/* LEDs */
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at91_gpio_leds(stamp9g20evb_leds, ARRAY_SIZE(stamp9g20evb_leds));
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}
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MACHINE_START(PORTUXG20, "taskit PortuxG20")
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/* Maintainer: taskit GmbH */
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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 = stamp9g20_init_early,
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.init_irq = at91_init_irq_default,
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.init_machine = portuxg20_board_init,
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MACHINE_END
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MACHINE_START(STAMP9G20, "taskit Stamp9G20")
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/* Maintainer: taskit GmbH */
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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 = stamp9g20_init_early,
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.init_irq = at91_init_irq_default,
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.init_machine = stamp9g20evb_board_init,
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MACHINE_END
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