i.MX27 pca100: Add USB support (eee7c497) · Commits · 戴 / test

arch/arm/mach-mx2/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -100,6 +100,7 @@ config MACH_IMX27LITE
		config MACH_PCA100
		bool "Phytec phyCARD-s (pca100)"
		depends on MACH_MX27
		select MXC_ULPI if USB_ULPI
		help
		Include support for phyCARD-s (aka pca100) platform. This
		includes specific configurations for the module and its peripherals.

arch/arm/mach-mx2/mach-pca100.c

+103 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,9 @@
		#include <linux/spi/eeprom.h>
		#include <linux/irq.h>
		#include <linux/gpio.h>
		#include <linux/usb/otg.h>
		#include <linux/usb/ulpi.h>
		#include <linux/fsl_devices.h>

		#include <asm/mach/arch.h>
		#include <asm/mach-types.h>
		@@ -41,9 +44,14 @@
		#include <mach/mxc_nand.h>
		#include <mach/irqs.h>
		#include <mach/mmc.h>
		#include <mach/mxc_ehci.h>
		#include <mach/ulpi.h>

		#include "devices.h"

		#define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
		#define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)

		static int pca100_pins[] = {
		/* UART1 */
		PE12_PF_UART1_TXD,
		@@ -92,6 +100,34 @@ static int pca100_pins[] = {
		PD29_PF_CSPI1_SCLK,
		PD30_PF_CSPI1_MISO,
		PD31_PF_CSPI1_MOSI,
		/* OTG */
		OTG_PHY_CS_GPIO \| GPIO_GPIO \| GPIO_OUT,
		PC7_PF_USBOTG_DATA5,
		PC8_PF_USBOTG_DATA6,
		PC9_PF_USBOTG_DATA0,
		PC10_PF_USBOTG_DATA2,
		PC11_PF_USBOTG_DATA1,
		PC12_PF_USBOTG_DATA4,
		PC13_PF_USBOTG_DATA3,
		PE0_PF_USBOTG_NXT,
		PE1_PF_USBOTG_STP,
		PE2_PF_USBOTG_DIR,
		PE24_PF_USBOTG_CLK,
		PE25_PF_USBOTG_DATA7,
		/* USBH2 */
		USBH2_PHY_CS_GPIO \| GPIO_GPIO \| GPIO_OUT,
		PA0_PF_USBH2_CLK,
		PA1_PF_USBH2_DIR,
		PA2_PF_USBH2_DATA7,
		PA3_PF_USBH2_NXT,
		PA4_PF_USBH2_STP,
		PD19_AF_USBH2_DATA4,
		PD20_AF_USBH2_DATA3,
		PD21_AF_USBH2_DATA6,
		PD22_AF_USBH2_DATA0,
		PD23_AF_USBH2_DATA2,
		PD24_AF_USBH2_DATA1,
		PD26_AF_USBH2_DATA5,
		};

		static struct imxuart_platform_data uart_pdata = {
		@@ -182,6 +218,50 @@ static struct imxmmc_platform_data sdhc_pdata = {
		.exit = pca100_sdhc2_exit,
		};

		static int otg_phy_init(struct platform_device *pdev)
		{
		gpio_set_value(OTG_PHY_CS_GPIO, 0);
		return 0;
		}

		static struct mxc_usbh_platform_data otg_pdata = {
		.init = otg_phy_init,
		.portsc = MXC_EHCI_MODE_ULPI,
		.flags = MXC_EHCI_INTERFACE_DIFF_UNI,
		};

		static int usbh2_phy_init(struct platform_device *pdev)
		{
		gpio_set_value(USBH2_PHY_CS_GPIO, 0);
		return 0;
		}

		static struct mxc_usbh_platform_data usbh2_pdata = {
		.init = usbh2_phy_init,
		.portsc = MXC_EHCI_MODE_ULPI,
		.flags = MXC_EHCI_INTERFACE_DIFF_UNI,
		};

		static struct fsl_usb2_platform_data otg_device_pdata = {
		.operating_mode = FSL_USB2_DR_DEVICE,
		.phy_mode = FSL_USB2_PHY_ULPI,
		};

		static int otg_mode_host;

		static int __init pca100_otg_mode(char *options)
		{
		if (!strcmp(options, "host"))
		otg_mode_host = 1;
		else if (!strcmp(options, "device"))
		otg_mode_host = 0;
		else
		pr_info("otg_mode neither \"host\" nor \"device\". "
		"Defaulting to device\n");
		return 0;
		}
		__setup("otg_mode=", pca100_otg_mode);

		static void __init pca100_init(void)
		{
		int ret;
		@@ -220,6 +300,29 @@ static void __init pca100_init(void)
		mxc_register_device(&mxc_spi_device0, &pca100_spi_0_data);
		#endif

		gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
		gpio_direction_output(OTG_PHY_CS_GPIO, 1);
		gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
		gpio_direction_output(USBH2_PHY_CS_GPIO, 1);

		#if defined(CONFIG_USB_ULPI)
		if (otg_mode_host) {
		otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
		USB_OTG_DRV_VBUS \| USB_OTG_DRV_VBUS_EXT);

		mxc_register_device(&mxc_otg_host, &otg_pdata);
		}

		usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
		USB_OTG_DRV_VBUS \| USB_OTG_DRV_VBUS_EXT);

		mxc_register_device(&mxc_usbh2, &usbh2_pdata);
		#endif
		if (!otg_mode_host) {
		gpio_set_value(OTG_PHY_CS_GPIO, 0);
		mxc_register_device(&mxc_otg_udc_device, &otg_device_pdata);
		}

		platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
		}

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