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https://github.com/edk2-porting/linux-next.git
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b78d8e59a6
The patch makes necessary changes on gpio-mxc as below to turn it into an upstanding gpio driver. * Add a list to save all mx2 ports references, so that mx2_gpio_irq_handler can walk through all interrupt status registers * Use readl/writel to replace mach-specific accessors __raw_readl/__raw_writel * Change mxc_gpio_init into mxc_gpio_probe function * Move "struct mxc_gpio_port" into gpio-mxc.c, as it needs not to be public at all, and also make some other cleanup on plat-mxc/include/mach/gpio.h at the same time And the patch then migrates mach-imx and mach-mx5 to the updated driver by adding corresponding platform devices. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
164 lines
3.3 KiB
C
164 lines
3.3 KiB
C
/*
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* arch/arm/mach-imx/mach-mx1ads.c
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*
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* Initially based on:
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* linux-2.6.7-imx/arch/arm/mach-imx/scb9328.c
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* Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
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*
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* 2004 (c) MontaVista Software, Inc.
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/i2c.h>
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#include <linux/i2c/pcf857x.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/physmap.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <mach/common.h>
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#include <mach/hardware.h>
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#include <mach/iomux-mx1.h>
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#include <mach/irqs.h>
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#include "devices-imx1.h"
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static const int mx1ads_pins[] __initconst = {
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/* UART1 */
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PC9_PF_UART1_CTS,
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PC10_PF_UART1_RTS,
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PC11_PF_UART1_TXD,
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PC12_PF_UART1_RXD,
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/* UART2 */
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PB28_PF_UART2_CTS,
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PB29_PF_UART2_RTS,
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PB30_PF_UART2_TXD,
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PB31_PF_UART2_RXD,
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/* I2C */
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PA15_PF_I2C_SDA,
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PA16_PF_I2C_SCL,
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/* SPI */
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PC13_PF_SPI1_SPI_RDY,
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PC14_PF_SPI1_SCLK,
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PC15_PF_SPI1_SS,
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PC16_PF_SPI1_MISO,
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PC17_PF_SPI1_MOSI,
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};
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/*
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* UARTs platform data
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*/
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static const struct imxuart_platform_data uart0_pdata __initconst = {
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.flags = IMXUART_HAVE_RTSCTS,
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};
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static const struct imxuart_platform_data uart1_pdata __initconst = {
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.flags = IMXUART_HAVE_RTSCTS,
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};
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/*
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* Physmap flash
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*/
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static struct physmap_flash_data mx1ads_flash_data = {
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.width = 4, /* bankwidth in bytes */
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};
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static struct resource flash_resource = {
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.start = MX1_CS0_PHYS,
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.end = MX1_CS0_PHYS + SZ_32M - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device flash_device = {
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.name = "physmap-flash",
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.id = 0,
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.resource = &flash_resource,
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.num_resources = 1,
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};
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/*
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* I2C
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*/
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static struct pcf857x_platform_data pcf857x_data[] = {
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{
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.gpio_base = 4 * 32,
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}, {
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.gpio_base = 4 * 32 + 16,
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}
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};
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static const struct imxi2c_platform_data mx1ads_i2c_data __initconst = {
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.bitrate = 100000,
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};
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static struct i2c_board_info mx1ads_i2c_devices[] = {
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{
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I2C_BOARD_INFO("pcf8575", 0x22),
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.platform_data = &pcf857x_data[0],
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}, {
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I2C_BOARD_INFO("pcf8575", 0x24),
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.platform_data = &pcf857x_data[1],
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},
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};
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/*
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* Board init
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*/
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static void __init mx1ads_init(void)
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{
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imx1_soc_init();
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mxc_gpio_setup_multiple_pins(mx1ads_pins,
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ARRAY_SIZE(mx1ads_pins), "mx1ads");
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/* UART */
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imx1_add_imx_uart0(&uart0_pdata);
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imx1_add_imx_uart1(&uart1_pdata);
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/* Physmap flash */
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mxc_register_device(&flash_device, &mx1ads_flash_data);
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/* I2C */
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i2c_register_board_info(0, mx1ads_i2c_devices,
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ARRAY_SIZE(mx1ads_i2c_devices));
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imx1_add_imx_i2c(&mx1ads_i2c_data);
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}
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static void __init mx1ads_timer_init(void)
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{
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mx1_clocks_init(32000);
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}
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struct sys_timer mx1ads_timer = {
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.init = mx1ads_timer_init,
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};
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MACHINE_START(MX1ADS, "Freescale MX1ADS")
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/* Maintainer: Sascha Hauer, Pengutronix */
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.boot_params = MX1_PHYS_OFFSET + 0x100,
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.map_io = mx1_map_io,
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.init_early = imx1_init_early,
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.init_irq = mx1_init_irq,
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.timer = &mx1ads_timer,
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.init_machine = mx1ads_init,
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MACHINE_END
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MACHINE_START(MXLADS, "Freescale MXLADS")
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.boot_params = MX1_PHYS_OFFSET + 0x100,
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.map_io = mx1_map_io,
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.init_early = imx1_init_early,
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.init_irq = mx1_init_irq,
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.timer = &mx1ads_timer,
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.init_machine = mx1ads_init,
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MACHINE_END
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