usb: host: remove ehci-pxa168.c
authorNeil Zhang <zhangwm@marvell.com>
Fri, 24 Feb 2012 02:14:40 +0000 (10:14 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 24 Feb 2012 21:12:14 +0000 (13:12 -0800)
Since ehci-mv.c can cover Marvell PXA and MMP series including PXA168,
so this driver seems redundant now.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Cc: <tanmay.upadhyay@einfochips.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/host/Kconfig
drivers/usb/host/ehci-hcd.c
drivers/usb/host/ehci-pxa168.c [deleted file]

index 353cdd4..b11b09f 100644 (file)
@@ -606,10 +606,3 @@ config USB_OCTEON_OHCI
 config USB_OCTEON2_COMMON
        bool
        default y if USB_OCTEON_EHCI || USB_OCTEON_OHCI
-
-config USB_PXA168_EHCI
-       bool "Marvell PXA168 on-chip EHCI HCD support"
-       depends on USB_EHCI_HCD && ARCH_MMP
-       help
-         Enable support for Marvell PXA168 SoC's on-chip EHCI
-         host controller
index 4918b0c..06e2548 100644 (file)
@@ -1361,11 +1361,6 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER                ehci_grlib_driver
 #endif
 
-#ifdef CONFIG_USB_PXA168_EHCI
-#include "ehci-pxa168.c"
-#define PLATFORM_DRIVER                ehci_pxa168_driver
-#endif
-
 #ifdef CONFIG_CPU_XLR
 #include "ehci-xls.c"
 #define PLATFORM_DRIVER                ehci_xls_driver
diff --git a/drivers/usb/host/ehci-pxa168.c b/drivers/usb/host/ehci-pxa168.c
deleted file mode 100644 (file)
index 8d0e7a2..0000000
+++ /dev/null
@@ -1,363 +0,0 @@
-/*
- * drivers/usb/host/ehci-pxa168.c
- *
- * Tanmay Upadhyay <tanmay.upadhyay@einfochips.com>
- *
- * Based on drivers/usb/host/ehci-orion.c
- *
- * 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/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <mach/pxa168.h>
-
-#define USB_PHY_CTRL_REG 0x4
-#define USB_PHY_PLL_REG  0x8
-#define USB_PHY_TX_REG   0xc
-
-#define FBDIV_SHIFT      4
-
-#define ICP_SHIFT        12
-#define ICP_15            2
-#define ICP_20            3
-#define ICP_25            4
-
-#define KVCO_SHIFT       15
-
-#define PLLCALI12_SHIFT  25
-#define CALI12_VDD        0
-#define CALI12_09         1
-#define CALI12_10         2
-#define CALI12_11         3
-
-#define PLLVDD12_SHIFT   27
-#define VDD12_VDD         0
-#define VDD12_10          1
-#define VDD12_11          2
-#define VDD12_12          3
-
-#define PLLVDD18_SHIFT   29
-#define VDD18_19          0
-#define VDD18_20          1
-#define VDD18_21          2
-#define VDD18_22          3
-
-
-#define PLL_READY        (1 << 23)
-#define VCOCAL_START     (1 << 21)
-#define REG_RCAL_START   (1 << 12)
-
-struct pxa168_usb_drv_data {
-       struct ehci_hcd ehci;
-       struct clk      *pxa168_usb_clk;
-       struct resource *usb_phy_res;
-       void __iomem    *usb_phy_reg_base;
-};
-
-static int ehci_pxa168_setup(struct usb_hcd *hcd)
-{
-       struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-       int retval;
-
-       ehci_reset(ehci);
-       retval = ehci_halt(ehci);
-       if (retval)
-               return retval;
-
-       /*
-        * data structure init
-        */
-       retval = ehci_init(hcd);
-       if (retval)
-               return retval;
-
-       hcd->has_tt = 1;
-
-       ehci_port_power(ehci, 0);
-
-       return retval;
-}
-
-static const struct hc_driver ehci_pxa168_hc_driver = {
-       .description = hcd_name,
-       .product_desc = "Marvell PXA168 EHCI",
-       .hcd_priv_size = sizeof(struct pxa168_usb_drv_data),
-
-       /*
-        * generic hardware linkage
-        */
-       .irq = ehci_irq,
-       .flags = HCD_MEMORY | HCD_USB2,
-
-       /*
-        * basic lifecycle operations
-        */
-       .reset = ehci_pxa168_setup,
-       .start = ehci_run,
-       .stop = ehci_stop,
-       .shutdown = ehci_shutdown,
-
-       /*
-        * managing i/o requests and associated device resources
-        */
-       .urb_enqueue = ehci_urb_enqueue,
-       .urb_dequeue = ehci_urb_dequeue,
-       .endpoint_disable = ehci_endpoint_disable,
-       .endpoint_reset = ehci_endpoint_reset,
-
-       /*
-        * scheduling support
-        */
-       .get_frame_number = ehci_get_frame,
-
-       /*
-        * root hub support
-        */
-       .hub_status_data = ehci_hub_status_data,
-       .hub_control = ehci_hub_control,
-       .bus_suspend = ehci_bus_suspend,
-       .bus_resume = ehci_bus_resume,
-       .relinquish_port = ehci_relinquish_port,
-       .port_handed_over = ehci_port_handed_over,
-
-       .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
-
-static int pxa168_usb_phy_init(struct platform_device *pdev)
-{
-       struct resource *res;
-       void __iomem *usb_phy_reg_base;
-       struct pxa168_usb_pdata *pdata;
-       struct pxa168_usb_drv_data *drv_data;
-       struct usb_hcd *hcd = platform_get_drvdata(pdev);
-       unsigned long reg_val;
-       int pll_retry_cont = 10000, err = 0;
-
-       drv_data = (struct pxa168_usb_drv_data *)hcd->hcd_priv;
-       pdata = (struct pxa168_usb_pdata *)pdev->dev.platform_data;
-
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-       if (!res) {
-               dev_err(&pdev->dev,
-                       "Found HC with no PHY register addr. Check %s setup!\n",
-                       dev_name(&pdev->dev));
-               return -ENODEV;
-       }
-
-       if (!request_mem_region(res->start, resource_size(res),
-                               ehci_pxa168_hc_driver.description)) {
-               dev_dbg(&pdev->dev, "controller already in use\n");
-               return -EBUSY;
-       }
-
-       usb_phy_reg_base = ioremap(res->start, resource_size(res));
-       if (usb_phy_reg_base == NULL) {
-               dev_dbg(&pdev->dev, "error mapping memory\n");
-               err = -EFAULT;
-               goto err1;
-       }
-       drv_data->usb_phy_reg_base = usb_phy_reg_base;
-       drv_data->usb_phy_res = res;
-
-       /* If someone wants to init USB phy in board specific way */
-       if (pdata && pdata->phy_init)
-               return pdata->phy_init(usb_phy_reg_base);
-
-       /* Power up the PHY and PLL */
-       writel(readl(usb_phy_reg_base + USB_PHY_CTRL_REG) | 0x3,
-               usb_phy_reg_base + USB_PHY_CTRL_REG);
-
-       /* Configure PHY PLL */
-       reg_val = readl(usb_phy_reg_base + USB_PHY_PLL_REG) & ~(0x7e03ffff);
-       reg_val |= (VDD18_22 << PLLVDD18_SHIFT | VDD12_12 << PLLVDD12_SHIFT |
-               CALI12_11 << PLLCALI12_SHIFT | 3 << KVCO_SHIFT |
-               ICP_15 << ICP_SHIFT | 0xee << FBDIV_SHIFT | 0xb);
-       writel(reg_val, usb_phy_reg_base + USB_PHY_PLL_REG);
-
-       /* Make sure PHY PLL is ready */
-       while (!(readl(usb_phy_reg_base + USB_PHY_PLL_REG) & PLL_READY)) {
-               if (!(pll_retry_cont--)) {
-                       dev_dbg(&pdev->dev, "USB PHY PLL not ready\n");
-                       err = -EIO;
-                       goto err2;
-               }
-       }
-
-       /* Toggle VCOCAL_START bit of U2PLL for PLL calibration */
-       udelay(200);
-       writel(readl(usb_phy_reg_base + USB_PHY_PLL_REG) | VCOCAL_START,
-               usb_phy_reg_base + USB_PHY_PLL_REG);
-       udelay(40);
-       writel(readl(usb_phy_reg_base + USB_PHY_PLL_REG) & ~VCOCAL_START,
-               usb_phy_reg_base + USB_PHY_PLL_REG);
-
-       /* Toggle REG_RCAL_START bit of U2PTX for impedance calibration */
-       udelay(400);
-       writel(readl(usb_phy_reg_base + USB_PHY_TX_REG) | REG_RCAL_START,
-               usb_phy_reg_base + USB_PHY_TX_REG);
-       udelay(40);
-       writel(readl(usb_phy_reg_base + USB_PHY_TX_REG) & ~REG_RCAL_START,
-               usb_phy_reg_base + USB_PHY_TX_REG);
-
-       /* Make sure PHY PLL is ready again */
-       pll_retry_cont = 0;
-       while (!(readl(usb_phy_reg_base + USB_PHY_PLL_REG) & PLL_READY)) {
-               if (!(pll_retry_cont--)) {
-                       dev_dbg(&pdev->dev, "USB PHY PLL not ready\n");
-                       err = -EIO;
-                       goto err2;
-               }
-       }
-
-       return 0;
-err2:
-       iounmap(usb_phy_reg_base);
-err1:
-       release_mem_region(res->start, resource_size(res));
-       return err;
-}
-
-static int __devinit ehci_pxa168_drv_probe(struct platform_device *pdev)
-{
-       struct resource *res;
-       struct usb_hcd *hcd;
-       struct ehci_hcd *ehci;
-       struct pxa168_usb_drv_data *drv_data;
-       void __iomem *regs;
-       int irq, err = 0;
-
-       if (usb_disabled())
-               return -ENODEV;
-
-       pr_debug("Initializing pxa168-SoC USB Host Controller\n");
-
-       irq = platform_get_irq(pdev, 0);
-       if (irq <= 0) {
-               dev_err(&pdev->dev,
-                       "Found HC with no IRQ. Check %s setup!\n",
-                       dev_name(&pdev->dev));
-               err = -ENODEV;
-               goto err1;
-       }
-
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!res) {
-               dev_err(&pdev->dev,
-                       "Found HC with no register addr. Check %s setup!\n",
-                       dev_name(&pdev->dev));
-               err = -ENODEV;
-               goto err1;
-       }
-
-       if (!request_mem_region(res->start, resource_size(res),
-                               ehci_pxa168_hc_driver.description)) {
-               dev_dbg(&pdev->dev, "controller already in use\n");
-               err = -EBUSY;
-               goto err1;
-       }
-
-       regs = ioremap(res->start, resource_size(res));
-       if (regs == NULL) {
-               dev_dbg(&pdev->dev, "error mapping memory\n");
-               err = -EFAULT;
-               goto err2;
-       }
-
-       hcd = usb_create_hcd(&ehci_pxa168_hc_driver,
-                       &pdev->dev, dev_name(&pdev->dev));
-       if (!hcd) {
-               err = -ENOMEM;
-               goto err3;
-       }
-
-       drv_data = (struct pxa168_usb_drv_data *)hcd->hcd_priv;
-
-       /* Enable USB clock */
-       drv_data->pxa168_usb_clk = clk_get(&pdev->dev, "PXA168-USBCLK");
-       if (IS_ERR(drv_data->pxa168_usb_clk)) {
-               dev_err(&pdev->dev, "Couldn't get USB clock\n");
-               err = PTR_ERR(drv_data->pxa168_usb_clk);
-               goto err4;
-       }
-       clk_enable(drv_data->pxa168_usb_clk);
-
-       err = pxa168_usb_phy_init(pdev);
-       if (err) {
-               dev_err(&pdev->dev, "USB PHY initialization failed\n");
-               goto err5;
-       }
-
-       hcd->rsrc_start = res->start;
-       hcd->rsrc_len = resource_size(res);
-       hcd->regs = regs;
-
-       ehci = hcd_to_ehci(hcd);
-       ehci->caps = hcd->regs + 0x100;
-       ehci->regs = hcd->regs + 0x100 +
-               HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
-       ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-       hcd->has_tt = 1;
-       ehci->sbrn = 0x20;
-
-       err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
-       if (err)
-               goto err5;
-
-       return 0;
-
-err5:
-       clk_disable(drv_data->pxa168_usb_clk);
-       clk_put(drv_data->pxa168_usb_clk);
-err4:
-       usb_put_hcd(hcd);
-err3:
-       iounmap(regs);
-err2:
-       release_mem_region(res->start, resource_size(res));
-err1:
-       dev_err(&pdev->dev, "init %s fail, %d\n",
-               dev_name(&pdev->dev), err);
-
-       return err;
-}
-
-static int __exit ehci_pxa168_drv_remove(struct platform_device *pdev)
-{
-       struct usb_hcd *hcd = platform_get_drvdata(pdev);
-       struct pxa168_usb_drv_data *drv_data =
-               (struct pxa168_usb_drv_data *)hcd->hcd_priv;
-
-       usb_remove_hcd(hcd);
-
-       /* Power down PHY & PLL */
-       writel(readl(drv_data->usb_phy_reg_base + USB_PHY_CTRL_REG) & (~0x3),
-               drv_data->usb_phy_reg_base + USB_PHY_CTRL_REG);
-
-       clk_disable(drv_data->pxa168_usb_clk);
-       clk_put(drv_data->pxa168_usb_clk);
-
-       iounmap(hcd->regs);
-       release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-
-       iounmap(drv_data->usb_phy_reg_base);
-       release_mem_region(drv_data->usb_phy_res->start,
-                       resource_size(drv_data->usb_phy_res));
-
-       usb_put_hcd(hcd);
-
-       return 0;
-}
-
-MODULE_ALIAS("platform:pxa168-ehci");
-
-static struct platform_driver ehci_pxa168_driver = {
-       .probe          = ehci_pxa168_drv_probe,
-       .remove         = __exit_p(ehci_pxa168_drv_remove),
-       .shutdown       = usb_hcd_platform_shutdown,
-       .driver.name    = "pxa168-ehci",
-};