arch/arm/mach-imx/mx31moboard-devboard.c - kernel/quantenna - Git at Google

 /*
  * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  */

 #include <linux/gpio.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/types.h>

 #include <linux/usb/otg.h>

 #include "common.h"
 #include "devices-imx31.h"
 #include "ehci.h"
 #include "hardware.h"
 #include "iomux-mx3.h"
 #include "ulpi.h"

 static unsigned int devboard_pins[] = {
 	/* UART1 */
 	MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
 	MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
 	/* SDHC2 */
 	MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
 	MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
 	MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
 	MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
 	/* USB H1 */
 	MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
 	MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
 	MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
 	MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
 	MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
 	/* SEL */
 	MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
 	MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
 };

 static const struct imxuart_platform_data uart_pdata __initconst = {
 	.flags = IMXUART_HAVE_RTSCTS,
 };

 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)

 static int devboard_sdhc2_get_ro(struct device *dev)
 {
 	return !gpio_get_value(SDHC2_WP);
 }

 static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
 		void *data)
 {
 	int ret;

 	ret = gpio_request(SDHC2_CD, "sdhc-detect");
 	if (ret)
 		return ret;

 	gpio_direction_input(SDHC2_CD);

 	ret = gpio_request(SDHC2_WP, "sdhc-wp");
 	if (ret)
 		goto err_gpio_free;
 	gpio_direction_input(SDHC2_WP);

 	ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
 		IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 		"sdhc2-card-detect", data);
 	if (ret)
 		goto err_gpio_free_2;

 	return 0;

 err_gpio_free_2:
 	gpio_free(SDHC2_WP);
 err_gpio_free:
 	gpio_free(SDHC2_CD);

 	return ret;
 }

 static void devboard_sdhc2_exit(struct device *dev, void *data)
 {
 	free_irq(gpio_to_irq(SDHC2_CD), data);
 	gpio_free(SDHC2_WP);
 	gpio_free(SDHC2_CD);
 }

 static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
 	.get_ro	= devboard_sdhc2_get_ro,
 	.init	= devboard_sdhc2_init,
 	.exit	= devboard_sdhc2_exit,
 };

 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)

 static void devboard_init_sel_gpios(void)
 {
 	if (!gpio_request(SEL0, "sel0")) {
 		gpio_direction_input(SEL0);
 		gpio_export(SEL0, true);
 	}

 	if (!gpio_request(SEL1, "sel1")) {
 		gpio_direction_input(SEL1);
 		gpio_export(SEL1, true);
 	}

 	if (!gpio_request(SEL2, "sel2")) {
 		gpio_direction_input(SEL2);
 		gpio_export(SEL2, true);
 	}

 	if (!gpio_request(SEL3, "sel3")) {
 		gpio_direction_input(SEL3);
 		gpio_export(SEL3, true);
 	}
 }
 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 			PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)

 static int devboard_usbh1_hw_init(struct platform_device *pdev)
 {
 	mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);

 	mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 	mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);

 	mdelay(10);

 	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
 			MXC_EHCI_INTERFACE_SINGLE_UNI);
 }

 #define USBH1_VBUSEN_B	IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 #define USBH1_MODE	IOMUX_TO_GPIO(MX31_PIN_NFALE)

 static int devboard_isp1105_init(struct usb_phy *otg)
 {
 	int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 	if (ret)
 		return ret;
 	/* single ended */
 	gpio_direction_output(USBH1_MODE, 0);

 	ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 	if (ret) {
 		gpio_free(USBH1_MODE);
 		return ret;
 	}
 	gpio_direction_output(USBH1_VBUSEN_B, 1);

 	return 0;
 }


 static int devboard_isp1105_set_vbus(struct usb_otg *otg, bool on)
 {
 	if (on)
 		gpio_set_value(USBH1_VBUSEN_B, 0);
 	else
 		gpio_set_value(USBH1_VBUSEN_B, 1);

 	return 0;
 }

 static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
 	.init	= devboard_usbh1_hw_init,
 	.portsc	= MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 };

 static int __init devboard_usbh1_init(void)
 {
 	struct usb_phy *phy;
 	struct platform_device *pdev;

 	phy = kzalloc(sizeof(*phy), GFP_KERNEL);
 	if (!phy)
 		return -ENOMEM;

 	phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
 	if (!phy->otg) {
 		kfree(phy);
 		return -ENOMEM;
 	}

 	phy->label	= "ISP1105";
 	phy->init	= devboard_isp1105_init;
 	phy->otg->set_vbus	= devboard_isp1105_set_vbus;

 	usbh1_pdata.otg = phy;

 	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);

 	return PTR_ERR_OR_ZERO(pdev);
 }


 static const struct fsl_usb2_platform_data usb_pdata __initconst = {
 	.operating_mode	= FSL_USB2_DR_DEVICE,
 	.phy_mode	= FSL_USB2_PHY_ULPI,
 };

 /*
  * system init for baseboard usage. Will be called by mx31moboard init.
  */
 void __init mx31moboard_devboard_init(void)
 {
 	printk(KERN_INFO "Initializing mx31devboard peripherals\n");

 	mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
 		"devboard");

 	imx31_add_imx_uart1(&uart_pdata);

 	imx31_add_mxc_mmc(1, &sdhc2_pdata);

 	devboard_init_sel_gpios();

 	imx31_add_fsl_usb2_udc(&usb_pdata);

 	devboard_usbh1_init();
 }
	/*
	* Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*/

	#include <linux/gpio.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>
	#include <linux/delay.h>
	#include <linux/platform_device.h>
	#include <linux/slab.h>
	#include <linux/types.h>

	#include <linux/usb/otg.h>

	#include "common.h"
	#include "devices-imx31.h"
	#include "ehci.h"
	#include "hardware.h"
	#include "iomux-mx3.h"
	#include "ulpi.h"

	static unsigned int devboard_pins[] = {
	/* UART1 */
	MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
	MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
	/* SDHC2 */
	MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
	MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
	MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
	MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
	/* USB H1 */
	MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
	MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
	MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
	MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
	MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
	/* SEL */
	MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
	MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
	};

	static const struct imxuart_platform_data uart_pdata __initconst = {
	.flags = IMXUART_HAVE_RTSCTS,
	};

	#define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
	#define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)

	static int devboard_sdhc2_get_ro(struct device *dev)
	{
	return !gpio_get_value(SDHC2_WP);
	}

	static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
	void *data)
	{
	int ret;

	ret = gpio_request(SDHC2_CD, "sdhc-detect");
	if (ret)
	return ret;

	gpio_direction_input(SDHC2_CD);

	ret = gpio_request(SDHC2_WP, "sdhc-wp");
	if (ret)
	goto err_gpio_free;
	gpio_direction_input(SDHC2_WP);

	ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
	IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
	"sdhc2-card-detect", data);
	if (ret)
	goto err_gpio_free_2;

	return 0;

	err_gpio_free_2:
	gpio_free(SDHC2_WP);
	err_gpio_free:
	gpio_free(SDHC2_CD);

	return ret;
	}

	static void devboard_sdhc2_exit(struct device dev, void data)
	{
	free_irq(gpio_to_irq(SDHC2_CD), data);
	gpio_free(SDHC2_WP);
	gpio_free(SDHC2_CD);
	}

	static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
	.get_ro = devboard_sdhc2_get_ro,
	.init = devboard_sdhc2_init,
	.exit = devboard_sdhc2_exit,
	};

	#define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
	#define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
	#define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
	#define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)

	static void devboard_init_sel_gpios(void)
	{
	if (!gpio_request(SEL0, "sel0")) {
	gpio_direction_input(SEL0);
	gpio_export(SEL0, true);
	}

	if (!gpio_request(SEL1, "sel1")) {
	gpio_direction_input(SEL1);
	gpio_export(SEL1, true);
	}

	if (!gpio_request(SEL2, "sel2")) {
	gpio_direction_input(SEL2);
	gpio_export(SEL2, true);
	}

	if (!gpio_request(SEL3, "sel3")) {
	gpio_direction_input(SEL3);
	gpio_export(SEL3, true);
	}
	}
	#define USB_PAD_CFG (PAD_CTL_DRV_MAX \| PAD_CTL_SRE_FAST \| PAD_CTL_HYS_CMOS \| \
	PAD_CTL_ODE_CMOS \| PAD_CTL_100K_PU)

	static int devboard_usbh1_hw_init(struct platform_device *pdev)
	{
	mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);

	mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
	mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);

	mdelay(10);

	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED \|
	MXC_EHCI_INTERFACE_SINGLE_UNI);
	}

	#define USBH1_VBUSEN_B IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
	#define USBH1_MODE IOMUX_TO_GPIO(MX31_PIN_NFALE)

	static int devboard_isp1105_init(struct usb_phy *otg)
	{
	int ret = gpio_request(USBH1_MODE, "usbh1-mode");
	if (ret)
	return ret;
	/* single ended */
	gpio_direction_output(USBH1_MODE, 0);

	ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
	if (ret) {
	gpio_free(USBH1_MODE);
	return ret;
	}
	gpio_direction_output(USBH1_VBUSEN_B, 1);

	return 0;
	}


	static int devboard_isp1105_set_vbus(struct usb_otg *otg, bool on)
	{
	if (on)
	gpio_set_value(USBH1_VBUSEN_B, 0);
	else
	gpio_set_value(USBH1_VBUSEN_B, 1);

	return 0;
	}

	static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
	.init = devboard_usbh1_hw_init,
	.portsc = MXC_EHCI_MODE_UTMI \| MXC_EHCI_SERIAL,
	};

	static int __init devboard_usbh1_init(void)
	{
	struct usb_phy *phy;
	struct platform_device *pdev;

	phy = kzalloc(sizeof(*phy), GFP_KERNEL);
	if (!phy)
	return -ENOMEM;

	phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
	if (!phy->otg) {
	kfree(phy);
	return -ENOMEM;
	}

	phy->label = "ISP1105";
	phy->init = devboard_isp1105_init;
	phy->otg->set_vbus = devboard_isp1105_set_vbus;

	usbh1_pdata.otg = phy;

	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);

	return PTR_ERR_OR_ZERO(pdev);
	}


	static const struct fsl_usb2_platform_data usb_pdata __initconst = {
	.operating_mode = FSL_USB2_DR_DEVICE,
	.phy_mode = FSL_USB2_PHY_ULPI,
	};

	/*
	* system init for baseboard usage. Will be called by mx31moboard init.
	*/
	void __init mx31moboard_devboard_init(void)
	{
	printk(KERN_INFO "Initializing mx31devboard peripherals\n");

	mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
	"devboard");

	imx31_add_imx_uart1(&uart_pdata);

	imx31_add_mxc_mmc(1, &sdhc2_pdata);

	devboard_init_sel_gpios();

	imx31_add_fsl_usb2_udc(&usb_pdata);

	devboard_usbh1_init();
	}