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Date: Mon, 28 Jan 2013 13:30:12 +0200
From: Roger Quadros <rogerq@...com>
To: <tony@...mide.com>
CC: <linux@....linux.org.uk>, <sameo@...ux.intel.com>, <balbi@...com>,
<stern@...land.harvard.edu>, <gregkh@...uxfoundation.org>,
<eballetbo@...il.com>, <javier@...hile0.org>,
<sshtylyov@...sta.com>, <linux-usb@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v2 11/30] usb: ehci-omap: Remove PHY reset handling code
Reset GPIO handling for the PHY must be done in the PHY
driver. We use the PHY helpers instead to reset the PHY.
Signed-off-by: Roger Quadros <rogerq@...com>
---
drivers/usb/host/ehci-omap.c | 70 +++++------------------------------------
1 files changed, 9 insertions(+), 61 deletions(-)
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index a35e44e..3c63619 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -86,79 +86,27 @@ static inline u32 ehci_read(void __iomem *base, u32 reg)
return __raw_readl(base + reg);
}
-
-static void omap_ehci_soft_phy_reset(struct usb_hcd *hcd, u8 port)
-{
- unsigned long timeout = jiffies + msecs_to_jiffies(1000);
- unsigned reg = 0;
-
- reg = ULPI_FUNC_CTRL_RESET
- /* FUNCTION_CTRL_SET register */
- | (ULPI_SET(ULPI_FUNC_CTRL) << EHCI_INSNREG05_ULPI_REGADD_SHIFT)
- /* Write */
- | (2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT)
- /* PORTn */
- | ((port + 1) << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT)
- /* start ULPI access*/
- | (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT);
-
- ehci_write(hcd->regs, EHCI_INSNREG05_ULPI, reg);
-
- /* Wait for ULPI access completion */
- while ((ehci_read(hcd->regs, EHCI_INSNREG05_ULPI)
- & (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT))) {
- cpu_relax();
-
- if (time_after(jiffies, timeout)) {
- dev_dbg(hcd->self.controller,
- "phy reset operation timed out\n");
- break;
- }
- }
-}
-
static int omap_ehci_init(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- int rc;
- struct usbhs_omap_platform_data *pdata;
-
- pdata = hcd->self.controller->platform_data;
+ struct omap_hcd *omap = (struct omap_hcd *)ehci->priv;
+ int rc, i;
/* Hold PHYs in reset while initializing EHCI controller */
- if (pdata->phy_reset) {
- if (gpio_is_valid(pdata->reset_gpio_port[0]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[0], 0);
-
- if (gpio_is_valid(pdata->reset_gpio_port[1]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[1], 0);
-
- /* Hold the PHY in RESET for enough time till DIR is high */
- udelay(10);
+ for (i = 0; i < omap->nports; i++) {
+ if (omap->phy[i])
+ usb_phy_shutdown(omap->phy[i]);
}
- /* Soft reset the PHY using PHY reset command over ULPI */
- if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY)
- omap_ehci_soft_phy_reset(hcd, 0);
- if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY)
- omap_ehci_soft_phy_reset(hcd, 1);
-
/* we know this is the memory we want, no need to ioremap again */
ehci->caps = hcd->regs;
rc = ehci_setup(hcd);
- if (pdata->phy_reset) {
- /* Hold the PHY in RESET for enough time till
- * PHY is settled and ready
- */
- udelay(10);
-
- if (gpio_is_valid(pdata->reset_gpio_port[0]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1);
-
- if (gpio_is_valid(pdata->reset_gpio_port[1]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
+ /* Bring PHYs out of reset */
+ for (i = 0; i < omap->nports; i++) {
+ if (omap->phy[i])
+ usb_phy_init(omap->phy[i]);
}
return rc;
--
1.7.4.1
--
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