diff options
author | Roland Stigge <stigge@antcom.de> | 2012-03-12 21:54:49 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-13 21:27:27 (GMT) |
commit | 32abd56a507e60e374dc7bb4912258225f9cf530 (patch) | |
tree | 523b0d7d009a0d48b4a980b5abf8073c8dddbf13 /drivers/usb/host/ohci-pnx4008.c | |
parent | b55dd320f32c4cc31279d86ce0afb335c690b1fb (diff) | |
download | linux-32abd56a507e60e374dc7bb4912258225f9cf530.tar.xz |
USB: OHCI-HCD: Rename ohci-pnx4008 to ohci-nxp
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>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ohci-pnx4008.c')
-rw-r--r-- | drivers/usb/host/ohci-pnx4008.c | 453 |
1 files changed, 0 insertions, 453 deletions
diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c deleted file mode 100644 index 0013db7..0000000 --- a/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, -}; - |