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    Subject[PATCH v5 1/3] USB: OHCI-HCD: Rename ohci-pnx4008 to ohci-nxp
    Date
    Since this driver is compatible with several NXP devices, the driver is renamed
    accordingly. Please combine with the following patch which also changes the
    respective symbol names.

    Signed-off-by: Roland Stigge <stigge@antcom.de>

    ---
    drivers/usb/host/ohci-hcd.c | 2
    drivers/usb/host/ohci-nxp.c | 453 ++++++++++++++++++++++++++++++++++++++++
    drivers/usb/host/ohci-pnx4008.c | 453 ----------------------------------------
    3 files changed, 454 insertions(+), 454 deletions(-)

    --- linux-2.6.orig/drivers/usb/host/ohci-hcd.c
    +++ linux-2.6/drivers/usb/host/ohci-hcd.c
    @@ -1051,7 +1051,7 @@ MODULE_LICENSE ("GPL");
    #endif

    #ifdef CONFIG_ARCH_PNX4008
    -#include "ohci-pnx4008.c"
    +#include "ohci-nxp.c"
    #define PLATFORM_DRIVER usb_hcd_pnx4008_driver
    #endif

    --- /dev/null
    +++ linux-2.6/drivers/usb/host/ohci-nxp.c
    @@ -0,0 +1,453 @@
    +/*
    + * drivers/usb/host/ohci-pnx4008.c
    + *
    + * driver for Philips PNX4008 USB Host
    + *
    + * Authors: Dmitry Chigirev <source@mvista.com>
    + * Vitaly Wool <vitalywool@gmail.com>
    + *
    + * register initialization is based on code examples provided by Philips
    + * Copyright (c) 2005 Koninklijke Philips Electronics N.V.
    + *
    + * NOTE: This driver does not have suspend/resume functionality
    + * This driver is intended for engineering development purposes only
    + *
    + * 2005-2006 (c) MontaVista Software, Inc. This file is licensed under
    + * the terms of the GNU General Public License version 2. This program
    + * is licensed "as is" without any warranty of any kind, whether express
    + * or implied.
    + */
    +#include <linux/clk.h>
    +#include <linux/platform_device.h>
    +#include <linux/i2c.h>
    +
    +#include <mach/hardware.h>
    +#include <asm/io.h>
    +
    +#include <mach/platform.h>
    +#include <mach/irqs.h>
    +#include <asm/gpio.h>
    +
    +#define USB_CTRL IO_ADDRESS(PNX4008_PWRMAN_BASE + 0x64)
    +
    +/* USB_CTRL bit defines */
    +#define USB_SLAVE_HCLK_EN (1 << 24)
    +#define USB_HOST_NEED_CLK_EN (1 << 21)
    +
    +#define USB_OTG_CLK_CTRL IO_ADDRESS(PNX4008_USB_CONFIG_BASE + 0xFF4)
    +#define USB_OTG_CLK_STAT IO_ADDRESS(PNX4008_USB_CONFIG_BASE + 0xFF8)
    +
    +/* USB_OTG_CLK_CTRL bit defines */
    +#define AHB_M_CLOCK_ON (1 << 4)
    +#define OTG_CLOCK_ON (1 << 3)
    +#define I2C_CLOCK_ON (1 << 2)
    +#define DEV_CLOCK_ON (1 << 1)
    +#define HOST_CLOCK_ON (1 << 0)
    +
    +#define USB_OTG_STAT_CONTROL IO_ADDRESS(PNX4008_USB_CONFIG_BASE + 0x110)
    +
    +/* USB_OTG_STAT_CONTROL bit defines */
    +#define TRANSPARENT_I2C_EN (1 << 7)
    +#define HOST_EN (1 << 0)
    +
    +/* ISP1301 USB transceiver I2C registers */
    +#define ISP1301_MODE_CONTROL_1 0x04 /* u8 read, set, +1 clear */
    +
    +#define MC1_SPEED_REG (1 << 0)
    +#define MC1_SUSPEND_REG (1 << 1)
    +#define MC1_DAT_SE0 (1 << 2)
    +#define MC1_TRANSPARENT (1 << 3)
    +#define MC1_BDIS_ACON_EN (1 << 4)
    +#define MC1_OE_INT_EN (1 << 5)
    +#define MC1_UART_EN (1 << 6)
    +#define MC1_MASK 0x7f
    +
    +#define ISP1301_MODE_CONTROL_2 0x12 /* u8 read, set, +1 clear */
    +
    +#define MC2_GLOBAL_PWR_DN (1 << 0)
    +#define MC2_SPD_SUSP_CTRL (1 << 1)
    +#define MC2_BI_DI (1 << 2)
    +#define MC2_TRANSP_BDIR0 (1 << 3)
    +#define MC2_TRANSP_BDIR1 (1 << 4)
    +#define MC2_AUDIO_EN (1 << 5)
    +#define MC2_PSW_EN (1 << 6)
    +#define MC2_EN2V7 (1 << 7)
    +
    +#define ISP1301_OTG_CONTROL_1 0x06 /* u8 read, set, +1 clear */
    +# define OTG1_DP_PULLUP (1 << 0)
    +# define OTG1_DM_PULLUP (1 << 1)
    +# define OTG1_DP_PULLDOWN (1 << 2)
    +# define OTG1_DM_PULLDOWN (1 << 3)
    +# define OTG1_ID_PULLDOWN (1 << 4)
    +# define OTG1_VBUS_DRV (1 << 5)
    +# define OTG1_VBUS_DISCHRG (1 << 6)
    +# define OTG1_VBUS_CHRG (1 << 7)
    +#define ISP1301_OTG_STATUS 0x10 /* u8 readonly */
    +# define OTG_B_SESS_END (1 << 6)
    +# define OTG_B_SESS_VLD (1 << 7)
    +
    +#define ISP1301_I2C_ADDR 0x2C
    +
    +#define ISP1301_I2C_MODE_CONTROL_1 0x4
    +#define ISP1301_I2C_MODE_CONTROL_2 0x12
    +#define ISP1301_I2C_OTG_CONTROL_1 0x6
    +#define ISP1301_I2C_OTG_CONTROL_2 0x10
    +#define ISP1301_I2C_INTERRUPT_SOURCE 0x8
    +#define ISP1301_I2C_INTERRUPT_LATCH 0xA
    +#define ISP1301_I2C_INTERRUPT_FALLING 0xC
    +#define ISP1301_I2C_INTERRUPT_RISING 0xE
    +#define ISP1301_I2C_REG_CLEAR_ADDR 1
    +
    +static struct i2c_driver isp1301_driver;
    +static struct i2c_client *isp1301_i2c_client;
    +
    +extern int usb_disabled(void);
    +extern int ocpi_enable(void);
    +
    +static struct clk *usb_clk;
    +
    +static const unsigned short normal_i2c[] =
    + { ISP1301_I2C_ADDR, ISP1301_I2C_ADDR + 1, I2C_CLIENT_END };
    +
    +static int isp1301_probe(struct i2c_client *client,
    + const struct i2c_device_id *id)
    +{
    + return 0;
    +}
    +
    +static int isp1301_remove(struct i2c_client *client)
    +{
    + return 0;
    +}
    +
    +static const struct i2c_device_id isp1301_id[] = {
    + { "isp1301_pnx", 0 },
    + { }
    +};
    +
    +static struct i2c_driver isp1301_driver = {
    + .driver = {
    + .name = "isp1301_pnx",
    + },
    + .probe = isp1301_probe,
    + .remove = isp1301_remove,
    + .id_table = isp1301_id,
    +};
    +
    +static void i2c_write(u8 buf, u8 subaddr)
    +{
    + char tmpbuf[2];
    +
    + tmpbuf[0] = subaddr; /*register number */
    + tmpbuf[1] = buf; /*register data */
    + i2c_master_send(isp1301_i2c_client, &tmpbuf[0], 2);
    +}
    +
    +static void isp1301_configure(void)
    +{
    + /* PNX4008 only supports DAT_SE0 USB mode */
    + /* PNX4008 R2A requires setting the MAX603 to output 3.6V */
    + /* Power up externel charge-pump */
    +
    + i2c_write(MC1_DAT_SE0 | MC1_SPEED_REG, ISP1301_I2C_MODE_CONTROL_1);
    + i2c_write(~(MC1_DAT_SE0 | MC1_SPEED_REG),
    + ISP1301_I2C_MODE_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR);
    + i2c_write(MC2_BI_DI | MC2_PSW_EN | MC2_SPD_SUSP_CTRL,
    + ISP1301_I2C_MODE_CONTROL_2);
    + i2c_write(~(MC2_BI_DI | MC2_PSW_EN | MC2_SPD_SUSP_CTRL),
    + ISP1301_I2C_MODE_CONTROL_2 | ISP1301_I2C_REG_CLEAR_ADDR);
    + i2c_write(OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN,
    + ISP1301_I2C_OTG_CONTROL_1);
    + i2c_write(~(OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN),
    + ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR);
    + i2c_write(0xFF,
    + ISP1301_I2C_INTERRUPT_LATCH | ISP1301_I2C_REG_CLEAR_ADDR);
    + i2c_write(0xFF,
    + ISP1301_I2C_INTERRUPT_FALLING | ISP1301_I2C_REG_CLEAR_ADDR);
    + i2c_write(0xFF,
    + ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR);
    +
    +}
    +
    +static inline void isp1301_vbus_on(void)
    +{
    + i2c_write(OTG1_VBUS_DRV, ISP1301_I2C_OTG_CONTROL_1);
    +}
    +
    +static inline void isp1301_vbus_off(void)
    +{
    + i2c_write(OTG1_VBUS_DRV,
    + ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR);
    +}
    +
    +static void pnx4008_start_hc(void)
    +{
    + unsigned long tmp = __raw_readl(USB_OTG_STAT_CONTROL) | HOST_EN;
    + __raw_writel(tmp, USB_OTG_STAT_CONTROL);
    + isp1301_vbus_on();
    +}
    +
    +static void pnx4008_stop_hc(void)
    +{
    + unsigned long tmp;
    + isp1301_vbus_off();
    + tmp = __raw_readl(USB_OTG_STAT_CONTROL) & ~HOST_EN;
    + __raw_writel(tmp, USB_OTG_STAT_CONTROL);
    +}
    +
    +static int __devinit ohci_pnx4008_start(struct usb_hcd *hcd)
    +{
    + struct ohci_hcd *ohci = hcd_to_ohci(hcd);
    + int ret;
    +
    + if ((ret = ohci_init(ohci)) < 0)
    + return ret;
    +
    + if ((ret = ohci_run(ohci)) < 0) {
    + dev_err(hcd->self.controller, "can't start\n");
    + ohci_stop(hcd);
    + return ret;
    + }
    + return 0;
    +}
    +
    +static const struct hc_driver ohci_pnx4008_hc_driver = {
    + .description = hcd_name,
    + .product_desc = "pnx4008 OHCI",
    +
    + /*
    + * generic hardware linkage
    + */
    + .irq = ohci_irq,
    + .flags = HCD_USB11 | HCD_MEMORY,
    +
    + .hcd_priv_size = sizeof(struct ohci_hcd),
    + /*
    + * basic lifecycle operations
    + */
    + .start = ohci_pnx4008_start,
    + .stop = ohci_stop,
    + .shutdown = ohci_shutdown,
    +
    + /*
    + * managing i/o requests and associated device resources
    + */
    + .urb_enqueue = ohci_urb_enqueue,
    + .urb_dequeue = ohci_urb_dequeue,
    + .endpoint_disable = ohci_endpoint_disable,
    +
    + /*
    + * scheduling support
    + */
    + .get_frame_number = ohci_get_frame,
    +
    + /*
    + * root hub support
    + */
    + .hub_status_data = ohci_hub_status_data,
    + .hub_control = ohci_hub_control,
    +#ifdef CONFIG_PM
    + .bus_suspend = ohci_bus_suspend,
    + .bus_resume = ohci_bus_resume,
    +#endif
    + .start_port_reset = ohci_start_port_reset,
    +};
    +
    +#define USB_CLOCK_MASK (AHB_M_CLOCK_ON| OTG_CLOCK_ON | HOST_CLOCK_ON | I2C_CLOCK_ON)
    +
    +static void pnx4008_set_usb_bits(void)
    +{
    + start_int_set_falling_edge(SE_USB_OTG_ATX_INT_N);
    + start_int_ack(SE_USB_OTG_ATX_INT_N);
    + start_int_umask(SE_USB_OTG_ATX_INT_N);
    +
    + start_int_set_rising_edge(SE_USB_OTG_TIMER_INT);
    + start_int_ack(SE_USB_OTG_TIMER_INT);
    + start_int_umask(SE_USB_OTG_TIMER_INT);
    +
    + start_int_set_rising_edge(SE_USB_I2C_INT);
    + start_int_ack(SE_USB_I2C_INT);
    + start_int_umask(SE_USB_I2C_INT);
    +
    + start_int_set_rising_edge(SE_USB_INT);
    + start_int_ack(SE_USB_INT);
    + start_int_umask(SE_USB_INT);
    +
    + start_int_set_rising_edge(SE_USB_NEED_CLK_INT);
    + start_int_ack(SE_USB_NEED_CLK_INT);
    + start_int_umask(SE_USB_NEED_CLK_INT);
    +
    + start_int_set_rising_edge(SE_USB_AHB_NEED_CLK_INT);
    + start_int_ack(SE_USB_AHB_NEED_CLK_INT);
    + start_int_umask(SE_USB_AHB_NEED_CLK_INT);
    +}
    +
    +static void pnx4008_unset_usb_bits(void)
    +{
    + start_int_mask(SE_USB_OTG_ATX_INT_N);
    + start_int_mask(SE_USB_OTG_TIMER_INT);
    + start_int_mask(SE_USB_I2C_INT);
    + start_int_mask(SE_USB_INT);
    + start_int_mask(SE_USB_NEED_CLK_INT);
    + start_int_mask(SE_USB_AHB_NEED_CLK_INT);
    +}
    +
    +static int __devinit usb_hcd_pnx4008_probe(struct platform_device *pdev)
    +{
    + struct usb_hcd *hcd = 0;
    + struct ohci_hcd *ohci;
    + const struct hc_driver *driver = &ohci_pnx4008_hc_driver;
    + struct i2c_adapter *i2c_adap;
    + struct i2c_board_info i2c_info;
    +
    + int ret = 0, irq;
    +
    + dev_dbg(&pdev->dev, "%s: " DRIVER_DESC " (pnx4008)\n", hcd_name);
    + if (usb_disabled()) {
    + err("USB is disabled");
    + ret = -ENODEV;
    + goto out;
    + }
    +
    + if (pdev->num_resources != 2
    + || pdev->resource[0].flags != IORESOURCE_MEM
    + || pdev->resource[1].flags != IORESOURCE_IRQ) {
    + err("Invalid resource configuration");
    + ret = -ENODEV;
    + goto out;
    + }
    +
    + /* Enable AHB slave USB clock, needed for further USB clock control */
    + __raw_writel(USB_SLAVE_HCLK_EN | (1 << 19), USB_CTRL);
    +
    + ret = i2c_add_driver(&isp1301_driver);
    + if (ret < 0) {
    + err("failed to add ISP1301 driver");
    + goto out;
    + }
    + i2c_adap = i2c_get_adapter(2);
    + memset(&i2c_info, 0, sizeof(struct i2c_board_info));
    + strlcpy(i2c_info.type, "isp1301_pnx", I2C_NAME_SIZE);
    + isp1301_i2c_client = i2c_new_probed_device(i2c_adap, &i2c_info,
    + normal_i2c, NULL);
    + i2c_put_adapter(i2c_adap);
    + if (!isp1301_i2c_client) {
    + err("failed to connect I2C to ISP1301 USB Transceiver");
    + ret = -ENODEV;
    + goto out_i2c_driver;
    + }
    +
    + isp1301_configure();
    +
    + /* Enable USB PLL */
    + usb_clk = clk_get(&pdev->dev, "ck_pll5");
    + if (IS_ERR(usb_clk)) {
    + err("failed to acquire USB PLL");
    + ret = PTR_ERR(usb_clk);
    + goto out1;
    + }
    +
    + ret = clk_enable(usb_clk);
    + if (ret < 0) {
    + err("failed to start USB PLL");
    + goto out2;
    + }
    +
    + ret = clk_set_rate(usb_clk, 48000);
    + if (ret < 0) {
    + err("failed to set USB clock rate");
    + goto out3;
    + }
    +
    + __raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL);
    +
    + /* Set to enable all needed USB clocks */
    + __raw_writel(USB_CLOCK_MASK, USB_OTG_CLK_CTRL);
    +
    + while ((__raw_readl(USB_OTG_CLK_STAT) & USB_CLOCK_MASK) !=
    + USB_CLOCK_MASK) ;
    +
    + hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
    + if (!hcd) {
    + err("Failed to allocate HC buffer");
    + ret = -ENOMEM;
    + goto out3;
    + }
    +
    + /* Set all USB bits in the Start Enable register */
    + pnx4008_set_usb_bits();
    +
    + hcd->rsrc_start = pdev->resource[0].start;
    + hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
    + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
    + dev_dbg(&pdev->dev, "request_mem_region failed\n");
    + ret = -ENOMEM;
    + goto out4;
    + }
    + hcd->regs = (void __iomem *)pdev->resource[0].start;
    +
    + irq = platform_get_irq(pdev, 0);
    + if (irq < 0) {
    + ret = -ENXIO;
    + goto out4;
    + }
    +
    + pnx4008_start_hc();
    + platform_set_drvdata(pdev, hcd);
    + ohci = hcd_to_ohci(hcd);
    + ohci_hcd_init(ohci);
    +
    + dev_info(&pdev->dev, "at 0x%p, irq %d\n", hcd->regs, hcd->irq);
    + ret = usb_add_hcd(hcd, irq, 0);
    + if (ret == 0)
    + return ret;
    +
    + pnx4008_stop_hc();
    +out4:
    + pnx4008_unset_usb_bits();
    + usb_put_hcd(hcd);
    +out3:
    + clk_disable(usb_clk);
    +out2:
    + clk_put(usb_clk);
    +out1:
    + i2c_unregister_device(isp1301_i2c_client);
    + isp1301_i2c_client = NULL;
    +out_i2c_driver:
    + i2c_del_driver(&isp1301_driver);
    +out:
    + return ret;
    +}
    +
    +static int usb_hcd_pnx4008_remove(struct platform_device *pdev)
    +{
    + struct usb_hcd *hcd = platform_get_drvdata(pdev);
    +
    + usb_remove_hcd(hcd);
    + pnx4008_stop_hc();
    + release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
    + usb_put_hcd(hcd);
    + pnx4008_unset_usb_bits();
    + clk_disable(usb_clk);
    + clk_put(usb_clk);
    + i2c_unregister_device(isp1301_i2c_client);
    + isp1301_i2c_client = NULL;
    + i2c_del_driver(&isp1301_driver);
    +
    + platform_set_drvdata(pdev, NULL);
    +
    + return 0;
    +}
    +
    +/* work with hotplug and coldplug */
    +MODULE_ALIAS("platform:usb-ohci");
    +
    +static struct platform_driver usb_hcd_pnx4008_driver = {
    + .driver = {
    + .name = "usb-ohci",
    + .owner = THIS_MODULE,
    + },
    + .probe = usb_hcd_pnx4008_probe,
    + .remove = usb_hcd_pnx4008_remove,
    +};
    +
    --- linux-2.6.orig/drivers/usb/host/ohci-pnx4008.c
    +++ /dev/null
    @@ -1,453 +0,0 @@
    -/*
    - * drivers/usb/host/ohci-pnx4008.c
    - *
    - * driver for Philips PNX4008 USB Host
    - *
    - * Authors: Dmitry Chigirev <source@mvista.com>
    - * Vitaly Wool <vitalywool@gmail.com>
    - *
    - * register initialization is based on code examples provided by Philips
    - * Copyright (c) 2005 Koninklijke Philips Electronics N.V.
    - *
    - * NOTE: This driver does not have suspend/resume functionality
    - * This driver is intended for engineering development purposes only
    - *
    - * 2005-2006 (c) MontaVista Software, Inc. This file is licensed under
    - * the terms of the GNU General Public License version 2. This program
    - * is licensed "as is" without any warranty of any kind, whether express
    - * or implied.
    - */
    -#include <linux/clk.h>
    -#include <linux/platform_device.h>
    -#include <linux/i2c.h>
    -
    -#include <mach/hardware.h>
    -#include <asm/io.h>
    -
    -#include <mach/platform.h>
    -#include <mach/irqs.h>
    -#include <asm/gpio.h>
    -
    -#define USB_CTRL IO_ADDRESS(PNX4008_PWRMAN_BASE + 0x64)
    -
    -/* USB_CTRL bit defines */
    -#define USB_SLAVE_HCLK_EN (1 << 24)
    -#define USB_HOST_NEED_CLK_EN (1 << 21)
    -
    -#define USB_OTG_CLK_CTRL IO_ADDRESS(PNX4008_USB_CONFIG_BASE + 0xFF4)
    -#define USB_OTG_CLK_STAT IO_ADDRESS(PNX4008_USB_CONFIG_BASE + 0xFF8)
    -
    -/* USB_OTG_CLK_CTRL bit defines */
    -#define AHB_M_CLOCK_ON (1 << 4)
    -#define OTG_CLOCK_ON (1 << 3)
    -#define I2C_CLOCK_ON (1 << 2)
    -#define DEV_CLOCK_ON (1 << 1)
    -#define HOST_CLOCK_ON (1 << 0)
    -
    -#define USB_OTG_STAT_CONTROL IO_ADDRESS(PNX4008_USB_CONFIG_BASE + 0x110)
    -
    -/* USB_OTG_STAT_CONTROL bit defines */
    -#define TRANSPARENT_I2C_EN (1 << 7)
    -#define HOST_EN (1 << 0)
    -
    -/* ISP1301 USB transceiver I2C registers */
    -#define ISP1301_MODE_CONTROL_1 0x04 /* u8 read, set, +1 clear */
    -
    -#define MC1_SPEED_REG (1 << 0)
    -#define MC1_SUSPEND_REG (1 << 1)
    -#define MC1_DAT_SE0 (1 << 2)
    -#define MC1_TRANSPARENT (1 << 3)
    -#define MC1_BDIS_ACON_EN (1 << 4)
    -#define MC1_OE_INT_EN (1 << 5)
    -#define MC1_UART_EN (1 << 6)
    -#define MC1_MASK 0x7f
    -
    -#define ISP1301_MODE_CONTROL_2 0x12 /* u8 read, set, +1 clear */
    -
    -#define MC2_GLOBAL_PWR_DN (1 << 0)
    -#define MC2_SPD_SUSP_CTRL (1 << 1)
    -#define MC2_BI_DI (1 << 2)
    -#define MC2_TRANSP_BDIR0 (1 << 3)
    -#define MC2_TRANSP_BDIR1 (1 << 4)
    -#define MC2_AUDIO_EN (1 << 5)
    -#define MC2_PSW_EN (1 << 6)
    -#define MC2_EN2V7 (1 << 7)
    -
    -#define ISP1301_OTG_CONTROL_1 0x06 /* u8 read, set, +1 clear */
    -# define OTG1_DP_PULLUP (1 << 0)
    -# define OTG1_DM_PULLUP (1 << 1)
    -# define OTG1_DP_PULLDOWN (1 << 2)
    -# define OTG1_DM_PULLDOWN (1 << 3)
    -# define OTG1_ID_PULLDOWN (1 << 4)
    -# define OTG1_VBUS_DRV (1 << 5)
    -# define OTG1_VBUS_DISCHRG (1 << 6)
    -# define OTG1_VBUS_CHRG (1 << 7)
    -#define ISP1301_OTG_STATUS 0x10 /* u8 readonly */
    -# define OTG_B_SESS_END (1 << 6)
    -# define OTG_B_SESS_VLD (1 << 7)
    -
    -#define ISP1301_I2C_ADDR 0x2C
    -
    -#define ISP1301_I2C_MODE_CONTROL_1 0x4
    -#define ISP1301_I2C_MODE_CONTROL_2 0x12
    -#define ISP1301_I2C_OTG_CONTROL_1 0x6
    -#define ISP1301_I2C_OTG_CONTROL_2 0x10
    -#define ISP1301_I2C_INTERRUPT_SOURCE 0x8
    -#define ISP1301_I2C_INTERRUPT_LATCH 0xA
    -#define ISP1301_I2C_INTERRUPT_FALLING 0xC
    -#define ISP1301_I2C_INTERRUPT_RISING 0xE
    -#define ISP1301_I2C_REG_CLEAR_ADDR 1
    -
    -static struct i2c_driver isp1301_driver;
    -static struct i2c_client *isp1301_i2c_client;
    -
    -extern int usb_disabled(void);
    -extern int ocpi_enable(void);
    -
    -static struct clk *usb_clk;
    -
    -static const unsigned short normal_i2c[] =
    - { ISP1301_I2C_ADDR, ISP1301_I2C_ADDR + 1, I2C_CLIENT_END };
    -
    -static int isp1301_probe(struct i2c_client *client,
    - const struct i2c_device_id *id)
    -{
    - return 0;
    -}
    -
    -static int isp1301_remove(struct i2c_client *client)
    -{
    - return 0;
    -}
    -
    -static const struct i2c_device_id isp1301_id[] = {
    - { "isp1301_pnx", 0 },
    - { }
    -};
    -
    -static struct i2c_driver isp1301_driver = {
    - .driver = {
    - .name = "isp1301_pnx",
    - },
    - .probe = isp1301_probe,
    - .remove = isp1301_remove,
    - .id_table = isp1301_id,
    -};
    -
    -static void i2c_write(u8 buf, u8 subaddr)
    -{
    - char tmpbuf[2];
    -
    - tmpbuf[0] = subaddr; /*register number */
    - tmpbuf[1] = buf; /*register data */
    - i2c_master_send(isp1301_i2c_client, &tmpbuf[0], 2);
    -}
    -
    -static void isp1301_configure(void)
    -{
    - /* PNX4008 only supports DAT_SE0 USB mode */
    - /* PNX4008 R2A requires setting the MAX603 to output 3.6V */
    - /* Power up externel charge-pump */
    -
    - i2c_write(MC1_DAT_SE0 | MC1_SPEED_REG, ISP1301_I2C_MODE_CONTROL_1);
    - i2c_write(~(MC1_DAT_SE0 | MC1_SPEED_REG),
    - ISP1301_I2C_MODE_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR);
    - i2c_write(MC2_BI_DI | MC2_PSW_EN | MC2_SPD_SUSP_CTRL,
    - ISP1301_I2C_MODE_CONTROL_2);
    - i2c_write(~(MC2_BI_DI | MC2_PSW_EN | MC2_SPD_SUSP_CTRL),
    - ISP1301_I2C_MODE_CONTROL_2 | ISP1301_I2C_REG_CLEAR_ADDR);
    - i2c_write(OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN,
    - ISP1301_I2C_OTG_CONTROL_1);
    - i2c_write(~(OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN),
    - ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR);
    - i2c_write(0xFF,
    - ISP1301_I2C_INTERRUPT_LATCH | ISP1301_I2C_REG_CLEAR_ADDR);
    - i2c_write(0xFF,
    - ISP1301_I2C_INTERRUPT_FALLING | ISP1301_I2C_REG_CLEAR_ADDR);
    - i2c_write(0xFF,
    - ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR);
    -
    -}
    -
    -static inline void isp1301_vbus_on(void)
    -{
    - i2c_write(OTG1_VBUS_DRV, ISP1301_I2C_OTG_CONTROL_1);
    -}
    -
    -static inline void isp1301_vbus_off(void)
    -{
    - i2c_write(OTG1_VBUS_DRV,
    - ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR);
    -}
    -
    -static void pnx4008_start_hc(void)
    -{
    - unsigned long tmp = __raw_readl(USB_OTG_STAT_CONTROL) | HOST_EN;
    - __raw_writel(tmp, USB_OTG_STAT_CONTROL);
    - isp1301_vbus_on();
    -}
    -
    -static void pnx4008_stop_hc(void)
    -{
    - unsigned long tmp;
    - isp1301_vbus_off();
    - tmp = __raw_readl(USB_OTG_STAT_CONTROL) & ~HOST_EN;
    - __raw_writel(tmp, USB_OTG_STAT_CONTROL);
    -}
    -
    -static int __devinit ohci_pnx4008_start(struct usb_hcd *hcd)
    -{
    - struct ohci_hcd *ohci = hcd_to_ohci(hcd);
    - int ret;
    -
    - if ((ret = ohci_init(ohci)) < 0)
    - return ret;
    -
    - if ((ret = ohci_run(ohci)) < 0) {
    - dev_err(hcd->self.controller, "can't start\n");
    - ohci_stop(hcd);
    - return ret;
    - }
    - return 0;
    -}
    -
    -static const struct hc_driver ohci_pnx4008_hc_driver = {
    - .description = hcd_name,
    - .product_desc = "pnx4008 OHCI",
    -
    - /*
    - * generic hardware linkage
    - */
    - .irq = ohci_irq,
    - .flags = HCD_USB11 | HCD_MEMORY,
    -
    - .hcd_priv_size = sizeof(struct ohci_hcd),
    - /*
    - * basic lifecycle operations
    - */
    - .start = ohci_pnx4008_start,
    - .stop = ohci_stop,
    - .shutdown = ohci_shutdown,
    -
    - /*
    - * managing i/o requests and associated device resources
    - */
    - .urb_enqueue = ohci_urb_enqueue,
    - .urb_dequeue = ohci_urb_dequeue,
    - .endpoint_disable = ohci_endpoint_disable,
    -
    - /*
    - * scheduling support
    - */
    - .get_frame_number = ohci_get_frame,
    -
    - /*
    - * root hub support
    - */
    - .hub_status_data = ohci_hub_status_data,
    - .hub_control = ohci_hub_control,
    -#ifdef CONFIG_PM
    - .bus_suspend = ohci_bus_suspend,
    - .bus_resume = ohci_bus_resume,
    -#endif
    - .start_port_reset = ohci_start_port_reset,
    -};
    -
    -#define USB_CLOCK_MASK (AHB_M_CLOCK_ON| OTG_CLOCK_ON | HOST_CLOCK_ON | I2C_CLOCK_ON)
    -
    -static void pnx4008_set_usb_bits(void)
    -{
    - start_int_set_falling_edge(SE_USB_OTG_ATX_INT_N);
    - start_int_ack(SE_USB_OTG_ATX_INT_N);
    - start_int_umask(SE_USB_OTG_ATX_INT_N);
    -
    - start_int_set_rising_edge(SE_USB_OTG_TIMER_INT);
    - start_int_ack(SE_USB_OTG_TIMER_INT);
    - start_int_umask(SE_USB_OTG_TIMER_INT);
    -
    - start_int_set_rising_edge(SE_USB_I2C_INT);
    - start_int_ack(SE_USB_I2C_INT);
    - start_int_umask(SE_USB_I2C_INT);
    -
    - start_int_set_rising_edge(SE_USB_INT);
    - start_int_ack(SE_USB_INT);
    - start_int_umask(SE_USB_INT);
    -
    - start_int_set_rising_edge(SE_USB_NEED_CLK_INT);
    - start_int_ack(SE_USB_NEED_CLK_INT);
    - start_int_umask(SE_USB_NEED_CLK_INT);
    -
    - start_int_set_rising_edge(SE_USB_AHB_NEED_CLK_INT);
    - start_int_ack(SE_USB_AHB_NEED_CLK_INT);
    - start_int_umask(SE_USB_AHB_NEED_CLK_INT);
    -}
    -
    -static void pnx4008_unset_usb_bits(void)
    -{
    - start_int_mask(SE_USB_OTG_ATX_INT_N);
    - start_int_mask(SE_USB_OTG_TIMER_INT);
    - start_int_mask(SE_USB_I2C_INT);
    - start_int_mask(SE_USB_INT);
    - start_int_mask(SE_USB_NEED_CLK_INT);
    - start_int_mask(SE_USB_AHB_NEED_CLK_INT);
    -}
    -
    -static int __devinit usb_hcd_pnx4008_probe(struct platform_device *pdev)
    -{
    - struct usb_hcd *hcd = 0;
    - struct ohci_hcd *ohci;
    - const struct hc_driver *driver = &ohci_pnx4008_hc_driver;
    - struct i2c_adapter *i2c_adap;
    - struct i2c_board_info i2c_info;
    -
    - int ret = 0, irq;
    -
    - dev_dbg(&pdev->dev, "%s: " DRIVER_DESC " (pnx4008)\n", hcd_name);
    - if (usb_disabled()) {
    - err("USB is disabled");
    - ret = -ENODEV;
    - goto out;
    - }
    -
    - if (pdev->num_resources != 2
    - || pdev->resource[0].flags != IORESOURCE_MEM
    - || pdev->resource[1].flags != IORESOURCE_IRQ) {
    - err("Invalid resource configuration");
    - ret = -ENODEV;
    - goto out;
    - }
    -
    - /* Enable AHB slave USB clock, needed for further USB clock control */
    - __raw_writel(USB_SLAVE_HCLK_EN | (1 << 19), USB_CTRL);
    -
    - ret = i2c_add_driver(&isp1301_driver);
    - if (ret < 0) {
    - err("failed to add ISP1301 driver");
    - goto out;
    - }
    - i2c_adap = i2c_get_adapter(2);
    - memset(&i2c_info, 0, sizeof(struct i2c_board_info));
    - strlcpy(i2c_info.type, "isp1301_pnx", I2C_NAME_SIZE);
    - isp1301_i2c_client = i2c_new_probed_device(i2c_adap, &i2c_info,
    - normal_i2c, NULL);
    - i2c_put_adapter(i2c_adap);
    - if (!isp1301_i2c_client) {
    - err("failed to connect I2C to ISP1301 USB Transceiver");
    - ret = -ENODEV;
    - goto out_i2c_driver;
    - }
    -
    - isp1301_configure();
    -
    - /* Enable USB PLL */
    - usb_clk = clk_get(&pdev->dev, "ck_pll5");
    - if (IS_ERR(usb_clk)) {
    - err("failed to acquire USB PLL");
    - ret = PTR_ERR(usb_clk);
    - goto out1;
    - }
    -
    - ret = clk_enable(usb_clk);
    - if (ret < 0) {
    - err("failed to start USB PLL");
    - goto out2;
    - }
    -
    - ret = clk_set_rate(usb_clk, 48000);
    - if (ret < 0) {
    - err("failed to set USB clock rate");
    - goto out3;
    - }
    -
    - __raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL);
    -
    - /* Set to enable all needed USB clocks */
    - __raw_writel(USB_CLOCK_MASK, USB_OTG_CLK_CTRL);
    -
    - while ((__raw_readl(USB_OTG_CLK_STAT) & USB_CLOCK_MASK) !=
    - USB_CLOCK_MASK) ;
    -
    - hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
    - if (!hcd) {
    - err("Failed to allocate HC buffer");
    - ret = -ENOMEM;
    - goto out3;
    - }
    -
    - /* Set all USB bits in the Start Enable register */
    - pnx4008_set_usb_bits();
    -
    - hcd->rsrc_start = pdev->resource[0].start;
    - hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
    - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
    - dev_dbg(&pdev->dev, "request_mem_region failed\n");
    - ret = -ENOMEM;
    - goto out4;
    - }
    - hcd->regs = (void __iomem *)pdev->resource[0].start;
    -
    - irq = platform_get_irq(pdev, 0);
    - if (irq < 0) {
    - ret = -ENXIO;
    - goto out4;
    - }
    -
    - pnx4008_start_hc();
    - platform_set_drvdata(pdev, hcd);
    - ohci = hcd_to_ohci(hcd);
    - ohci_hcd_init(ohci);
    -
    - dev_info(&pdev->dev, "at 0x%p, irq %d\n", hcd->regs, hcd->irq);
    - ret = usb_add_hcd(hcd, irq, 0);
    - if (ret == 0)
    - return ret;
    -
    - pnx4008_stop_hc();
    -out4:
    - pnx4008_unset_usb_bits();
    - usb_put_hcd(hcd);
    -out3:
    - clk_disable(usb_clk);
    -out2:
    - clk_put(usb_clk);
    -out1:
    - i2c_unregister_device(isp1301_i2c_client);
    - isp1301_i2c_client = NULL;
    -out_i2c_driver:
    - i2c_del_driver(&isp1301_driver);
    -out:
    - return ret;
    -}
    -
    -static int usb_hcd_pnx4008_remove(struct platform_device *pdev)
    -{
    - struct usb_hcd *hcd = platform_get_drvdata(pdev);
    -
    - usb_remove_hcd(hcd);
    - pnx4008_stop_hc();
    - release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
    - usb_put_hcd(hcd);
    - pnx4008_unset_usb_bits();
    - clk_disable(usb_clk);
    - clk_put(usb_clk);
    - i2c_unregister_device(isp1301_i2c_client);
    - isp1301_i2c_client = NULL;
    - i2c_del_driver(&isp1301_driver);
    -
    - platform_set_drvdata(pdev, NULL);
    -
    - return 0;
    -}
    -
    -/* work with hotplug and coldplug */
    -MODULE_ALIAS("platform:usb-ohci");
    -
    -static struct platform_driver usb_hcd_pnx4008_driver = {
    - .driver = {
    - .name = "usb-ohci",
    - .owner = THIS_MODULE,
    - },
    - .probe = usb_hcd_pnx4008_probe,
    - .remove = usb_hcd_pnx4008_remove,
    -};
    -

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      Last update: 2012-03-10 20:41    [W:0.067 / U:31.208 seconds]
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