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https://github.com/edk2-porting/linux-next.git
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fcbd0c5f20
This patch adds support for power key button of the efika mx. It's connected on GPIO 2 31. Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
281 lines
7.0 KiB
C
281 lines
7.0 KiB
C
/*
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* Copyright (C) 2010 Linaro Limited
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*
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* based on code from the following
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* Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2009-2010 Pegatron Corporation. All Rights Reserved.
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* Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <linux/leds.h>
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#include <linux/input.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/fsl_devices.h>
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#include <mach/common.h>
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#include <mach/hardware.h>
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#include <mach/iomux-mx51.h>
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#include <mach/i2c.h>
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#include <mach/mxc_ehci.h>
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#include <asm/irq.h>
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#include <asm/setup.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 "devices-imx51.h"
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#include "devices.h"
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#define MX51_USB_PLL_DIV_24_MHZ 0x01
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#define EFIKAMX_PCBID0 (2*32 + 16)
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#define EFIKAMX_PCBID1 (2*32 + 17)
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#define EFIKAMX_PCBID2 (2*32 + 11)
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#define EFIKAMX_BLUE_LED (2*32 + 13)
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#define EFIKAMX_GREEN_LED (2*32 + 14)
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#define EFIKAMX_RED_LED (2*32 + 15)
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#define EFIKAMX_POWER_KEY (1*32 + 31)
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/* the pci ids pin have pull up. they're driven low according to board id */
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#define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
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#define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
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#define MX51_PAD_PCBID2 IOMUX_PAD(0x504, 0x128, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
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#define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)
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static iomux_v3_cfg_t mx51efikamx_pads[] = {
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/* UART1 */
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MX51_PAD_UART1_RXD__UART1_RXD,
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MX51_PAD_UART1_TXD__UART1_TXD,
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MX51_PAD_UART1_RTS__UART1_RTS,
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MX51_PAD_UART1_CTS__UART1_CTS,
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/* board id */
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MX51_PAD_PCBID0,
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MX51_PAD_PCBID1,
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MX51_PAD_PCBID2,
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/* SD 1 */
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MX51_PAD_SD1_CMD__SD1_CMD,
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MX51_PAD_SD1_CLK__SD1_CLK,
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MX51_PAD_SD1_DATA0__SD1_DATA0,
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MX51_PAD_SD1_DATA1__SD1_DATA1,
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MX51_PAD_SD1_DATA2__SD1_DATA2,
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MX51_PAD_SD1_DATA3__SD1_DATA3,
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/* SD 2 */
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MX51_PAD_SD2_CMD__SD2_CMD,
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MX51_PAD_SD2_CLK__SD2_CLK,
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MX51_PAD_SD2_DATA0__SD2_DATA0,
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MX51_PAD_SD2_DATA1__SD2_DATA1,
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MX51_PAD_SD2_DATA2__SD2_DATA2,
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MX51_PAD_SD2_DATA3__SD2_DATA3,
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/* SD/MMC WP/CD */
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MX51_PAD_GPIO_1_0__ESDHC1_CD,
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MX51_PAD_GPIO_1_1__ESDHC1_WP,
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MX51_PAD_GPIO_1_7__ESDHC2_WP,
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MX51_PAD_GPIO_1_8__ESDHC2_CD,
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/* leds */
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MX51_PAD_CSI1_D9__GPIO_3_13,
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MX51_PAD_CSI1_VSYNC__GPIO_3_14,
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MX51_PAD_CSI1_HSYNC__GPIO_3_15,
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/* power key */
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MX51_PAD_PWRKEY,
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};
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/* Serial ports */
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#if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
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static const struct imxuart_platform_data uart_pdata = {
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.flags = IMXUART_HAVE_RTSCTS,
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};
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static inline void mxc_init_imx_uart(void)
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{
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imx51_add_imx_uart(0, &uart_pdata);
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imx51_add_imx_uart(1, &uart_pdata);
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imx51_add_imx_uart(2, &uart_pdata);
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}
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#else /* !SERIAL_IMX */
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static inline void mxc_init_imx_uart(void)
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{
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}
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#endif /* SERIAL_IMX */
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/* This function is board specific as the bit mask for the plldiv will also
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* be different for other Freescale SoCs, thus a common bitmask is not
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* possible and cannot get place in /plat-mxc/ehci.c.
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*/
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static int initialize_otg_port(struct platform_device *pdev)
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{
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u32 v;
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void __iomem *usb_base;
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void __iomem *usbother_base;
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usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
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usbother_base = (void __iomem *)(usb_base + MX5_USBOTHER_REGS_OFFSET);
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/* Set the PHY clock to 19.2MHz */
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v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
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v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK;
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v |= MX51_USB_PLL_DIV_24_MHZ;
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__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
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iounmap(usb_base);
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return 0;
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}
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static struct mxc_usbh_platform_data dr_utmi_config = {
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.init = initialize_otg_port,
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.portsc = MXC_EHCI_UTMI_16BIT,
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.flags = MXC_EHCI_INTERNAL_PHY,
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};
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/* PCBID2 PCBID1 PCBID0 STATE
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1 1 1 ER1:rev1.1
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1 1 0 ER2:rev1.2
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1 0 1 ER3:rev1.3
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1 0 0 ER4:rev1.4
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*/
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static void __init mx51_efikamx_board_id(void)
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{
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int id;
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/* things are taking time to settle */
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msleep(150);
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gpio_request(EFIKAMX_PCBID0, "pcbid0");
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gpio_direction_input(EFIKAMX_PCBID0);
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gpio_request(EFIKAMX_PCBID1, "pcbid1");
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gpio_direction_input(EFIKAMX_PCBID1);
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gpio_request(EFIKAMX_PCBID2, "pcbid2");
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gpio_direction_input(EFIKAMX_PCBID2);
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id = gpio_get_value(EFIKAMX_PCBID0);
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id |= gpio_get_value(EFIKAMX_PCBID1) << 1;
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id |= gpio_get_value(EFIKAMX_PCBID2) << 2;
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switch (id) {
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case 7:
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system_rev = 0x11;
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break;
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case 6:
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system_rev = 0x12;
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break;
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case 5:
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system_rev = 0x13;
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break;
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case 4:
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system_rev = 0x14;
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break;
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default:
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system_rev = 0x10;
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break;
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}
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if ((system_rev == 0x10)
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|| (system_rev == 0x12)
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|| (system_rev == 0x14)) {
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printk(KERN_WARNING
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"EfikaMX: Unsupported board revision 1.%u!\n",
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system_rev & 0xf);
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}
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}
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static struct gpio_led mx51_efikamx_leds[] = {
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{
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.name = "efikamx:green",
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.default_trigger = "default-on",
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.gpio = EFIKAMX_GREEN_LED,
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},
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{
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.name = "efikamx:red",
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.default_trigger = "ide-disk",
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.gpio = EFIKAMX_RED_LED,
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},
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{
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.name = "efikamx:blue",
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.default_trigger = "mmc0",
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.gpio = EFIKAMX_BLUE_LED,
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},
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};
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static struct gpio_led_platform_data mx51_efikamx_leds_data = {
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.leds = mx51_efikamx_leds,
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.num_leds = ARRAY_SIZE(mx51_efikamx_leds),
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};
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static struct platform_device mx51_efikamx_leds_device = {
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.name = "leds-gpio",
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.id = -1,
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.dev = {
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.platform_data = &mx51_efikamx_leds_data,
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},
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};
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static struct gpio_keys_button mx51_efikamx_powerkey[] = {
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{
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.code = KEY_POWER,
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.gpio = EFIKAMX_POWER_KEY,
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.type = EV_PWR,
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.desc = "Power Button (CM)",
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.wakeup = 1,
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.debounce_interval = 10, /* ms */
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},
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};
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static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = {
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.buttons = mx51_efikamx_powerkey,
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.nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey),
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};
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static void __init mxc_board_init(void)
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{
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mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
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ARRAY_SIZE(mx51efikamx_pads));
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mx51_efikamx_board_id();
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mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
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mxc_init_imx_uart();
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imx51_add_esdhc(0, NULL);
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/* on < 1.2 boards both SD controllers are used */
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if (system_rev < 0x12) {
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imx51_add_esdhc(1, NULL);
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mx51_efikamx_leds[2].default_trigger = "mmc1";
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}
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platform_device_register(&mx51_efikamx_leds_device);
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imx51_add_gpio_keys(&mx51_efikamx_powerkey_data);
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}
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static void __init mx51_efikamx_timer_init(void)
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{
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mx51_clocks_init(32768, 24000000, 22579200, 24576000);
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}
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static struct sys_timer mxc_timer = {
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.init = mx51_efikamx_timer_init,
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};
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MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop")
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/* Maintainer: Amit Kucheria <amit.kucheria@linaro.org> */
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.boot_params = MX51_PHYS_OFFSET + 0x100,
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.map_io = mx51_map_io,
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.init_irq = mx51_init_irq,
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.init_machine = mxc_board_init,
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.timer = &mxc_timer,
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MACHINE_END
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