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Date: Fri, 10 May 2013 19:24:11 +0530
From: Venu Byravarasu <vbyravarasu@...dia.com>
To: <gregkh@...uxfoundation.org>, <swarren@...dotorg.org>,
<balbi@...com>, <stern@...land.harvard.edu>
CC: <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-tegra@...r.kernel.org>,
Venu Byravarasu <vbyravarasu@...dia.com>
Subject: [PATCH v3 10/10] Usb: Move PORTSC access to PHY
Changes with this patch:
1. As PHY is being registered as separate platform driver & EHCI Tegra
is no more calling PHY open, moved tegra_ehci_set_pts & tegra_ehci_set_phcd
functions to PHY driver,
2. Removed unused defines for multiple USB port base addresses
Signed-off-by: Venu Byravarasu <vbyravarasu@...dia.com>
---
This is a new patch being added into the series, to address the revert done
with patch#4 of the series.
drivers/usb/host/ehci-tegra.c | 49 -------------------------------------
drivers/usb/phy/phy-tegra-usb.c | 37 +++++++++++++++++++++++++--
include/linux/usb/tegra_usb_phy.h | 4 ---
3 files changed, 34 insertions(+), 56 deletions(-)
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 406abd9..2340d7a 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -30,15 +30,6 @@
#include <linux/usb/tegra_usb_phy.h>
#include <linux/clk/tegra.h>
-#define TEGRA_USB_BASE 0xC5000000
-#define TEGRA_USB2_BASE 0xC5004000
-#define TEGRA_USB3_BASE 0xC5008000
-
-/* PORTSC registers */
-#define TEGRA_USB_PORTSC1 0x184
-#define TEGRA_USB_PORTSC1_PTS(x) (((x) & 0x3) << 30)
-#define TEGRA_USB_PORTSC1_PHCD (1 << 23)
-
#define TEGRA_USB_DMA_ALIGN 32
struct tegra_ehci_hcd {
@@ -608,37 +599,6 @@ static const struct dev_pm_ops tegra_ehci_pm_ops = {
#endif
-/* Bits of PORTSC1, which will get cleared by writing 1 into them */
-#define TEGRA_PORTSC1_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC)
-
-void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val)
-{
- unsigned long val;
- struct usb_hcd *hcd = bus_to_hcd(x->otg->host);
- void __iomem *base = hcd->regs;
-
- val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS;
- val &= ~TEGRA_USB_PORTSC1_PTS(3);
- val |= TEGRA_USB_PORTSC1_PTS(pts_val & 3);
- writel(val, base + TEGRA_USB_PORTSC1);
-}
-EXPORT_SYMBOL_GPL(tegra_ehci_set_pts);
-
-void tegra_ehci_set_phcd(struct usb_phy *x, bool enable)
-{
- unsigned long val;
- struct usb_hcd *hcd = bus_to_hcd(x->otg->host);
- void __iomem *base = hcd->regs;
-
- val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS;
- if (enable)
- val |= TEGRA_USB_PORTSC1_PHCD;
- else
- val &= ~TEGRA_USB_PORTSC1_PHCD;
- writel(val, base + TEGRA_USB_PORTSC1);
-}
-EXPORT_SYMBOL_GPL(tegra_ehci_set_phcd);
-
static u64 tegra_ehci_dma_mask = DMA_BIT_MASK(32);
static int tegra_ehci_probe(struct platform_device *pdev)
@@ -731,15 +691,6 @@ static int tegra_ehci_probe(struct platform_device *pdev)
goto cleanup_hcd_create;
}
- u_phy->otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg),
- GFP_KERNEL);
- if (!u_phy->otg) {
- dev_err(&pdev->dev, "Failed to alloc memory for otg\n");
- err = -ENOMEM;
- goto cleanup_phy;
- }
- u_phy->otg->host = hcd_to_bus(hcd);
-
err = usb_phy_set_suspend(hcd->phy, 0);
if (err) {
dev_err(&pdev->dev, "Failed to power on the phy\n");
diff --git a/drivers/usb/phy/phy-tegra-usb.c b/drivers/usb/phy/phy-tegra-usb.c
index 4d81b19..b2a909f 100644
--- a/drivers/usb/phy/phy-tegra-usb.c
+++ b/drivers/usb/phy/phy-tegra-usb.c
@@ -33,6 +33,7 @@
#include <asm/mach-types.h>
#include <linux/usb/tegra_usb_phy.h>
#include <linux/module.h>
+#include <linux/usb/ehci_def.h>
#define ULPI_VIEWPORT 0x170
@@ -196,6 +197,36 @@ static struct tegra_utmip_config utmip_default[] = {
},
};
+/* PORTSC registers */
+#define TEGRA_USB_PORTSC1 0x184
+#define TEGRA_USB_PORTSC1_PTS(x) (((x) & 0x3) << 30)
+#define TEGRA_USB_PORTSC1_PHCD (1 << 23)
+
+/* Bits of PORTSC1, which will get cleared by writing 1 into them */
+#define TEGRA_PORTSC1_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC)
+
+static void tegra_ehci_set_pts(void __iomem *base, u8 pts_val)
+{
+ unsigned long val;
+
+ val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS;
+ val &= ~TEGRA_USB_PORTSC1_PTS(3);
+ val |= TEGRA_USB_PORTSC1_PTS(pts_val & 3);
+ writel(val, base + TEGRA_USB_PORTSC1);
+}
+
+static void tegra_ehci_set_phcd(void __iomem *base, bool enable)
+{
+ unsigned long val;
+
+ val = readl(base + TEGRA_USB_PORTSC1) & ~TEGRA_PORTSC1_RWC_BITS;
+ if (enable)
+ val |= TEGRA_USB_PORTSC1_PHCD;
+ else
+ val &= ~TEGRA_USB_PORTSC1_PHCD;
+ writel(val, base + TEGRA_USB_PORTSC1);
+}
+
static int utmip_pad_open(struct tegra_usb_phy *phy)
{
phy->pad_clk = devm_clk_get(phy->dev, "utmi-pads");
@@ -282,7 +313,7 @@ static void utmi_phy_clk_disable(struct tegra_usb_phy *phy)
val &= ~USB_SUSP_SET;
writel(val, base + USB_SUSP_CTRL);
} else
- tegra_ehci_set_phcd(&phy->u_phy, true);
+ tegra_ehci_set_phcd(base, true);
if (utmi_wait_register(base + USB_SUSP_CTRL, USB_PHY_CLK_VALID, 0) < 0)
pr_err("%s: timeout waiting for phy to stabilize\n", __func__);
@@ -304,7 +335,7 @@ static void utmi_phy_clk_enable(struct tegra_usb_phy *phy)
val &= ~USB_SUSP_CLR;
writel(val, base + USB_SUSP_CTRL);
} else
- tegra_ehci_set_phcd(&phy->u_phy, false);
+ tegra_ehci_set_phcd(base, false);
if (utmi_wait_register(base + USB_SUSP_CTRL, USB_PHY_CLK_VALID,
USB_PHY_CLK_VALID))
@@ -427,7 +458,7 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy)
utmi_phy_clk_enable(phy);
if (!phy->is_legacy_phy)
- tegra_ehci_set_pts(&phy->u_phy, 0);
+ tegra_ehci_set_pts(base, 0);
return 0;
}
diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h
index 0cd15d2..d2ca919 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -76,8 +76,4 @@ void tegra_ehci_phy_restore_start(struct usb_phy *phy,
void tegra_ehci_phy_restore_end(struct usb_phy *phy);
-void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val);
-
-void tegra_ehci_set_phcd(struct usb_phy *x, bool enable);
-
#endif /* __TEGRA_USB_PHY_H */
--
1.7.0.4
--
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