diff options
author | Venu Byravarasu <vbyravarasu@nvidia.com> | 2013-01-17 20:15:37 +0000 |
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committer | Stephen Warren <swarren@nvidia.com> | 2013-01-28 11:20:05 -0700 |
commit | bbdabdb62d86090511410728644a19291bf300cf (patch) | |
tree | 4ad3a6fa47c2368be8a84feefec222f78951ede1 /drivers/usb/phy | |
parent | 3f9db1a19a8a17f6000973194c6a1d63c5cebf21 (diff) | |
download | linux-bbdabdb62d86090511410728644a19291bf300cf.tar.gz |
usb: add APIs to access host registers from Tegra PHY
As Tegra PHY driver needs to access one of the host registers, added few APIs. Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> [swarren: moved assignment of phy->is_ulpi_phy to previous patch.] Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'drivers/usb/phy')
-rw-r--r-- | drivers/usb/phy/tegra_usb_phy.c | 47 |
1 files changed, 6 insertions, 41 deletions
diff --git a/drivers/usb/phy/tegra_usb_phy.c b/drivers/usb/phy/tegra_usb_phy.c index 48fa5258ce0b..d4657045b8b1 100644 --- a/drivers/usb/phy/tegra_usb_phy.c +++ b/drivers/usb/phy/tegra_usb_phy.c @@ -36,19 +36,6 @@ #define ULPI_VIEWPORT 0x170 -#define USB_PORTSC1 0x184 -#define USB_PORTSC1_PTS(x) (((x) & 0x3) << 30) -#define USB_PORTSC1_PSPD(x) (((x) & 0x3) << 26) -#define USB_PORTSC1_PHCD (1 << 23) -#define USB_PORTSC1_WKOC (1 << 22) -#define USB_PORTSC1_WKDS (1 << 21) -#define USB_PORTSC1_WKCN (1 << 20) -#define USB_PORTSC1_PTC(x) (((x) & 0xf) << 16) -#define USB_PORTSC1_PP (1 << 12) -#define USB_PORTSC1_SUSP (1 << 7) -#define USB_PORTSC1_PE (1 << 2) -#define USB_PORTSC1_CCS (1 << 0) - #define USB_SUSP_CTRL 0x400 #define USB_WAKE_ON_CNNT_EN_DEV (1 << 3) #define USB_WAKE_ON_DISCON_EN_DEV (1 << 4) @@ -311,11 +298,8 @@ static void utmi_phy_clk_disable(struct tegra_usb_phy *phy) val = readl(base + USB_SUSP_CTRL); val &= ~USB_SUSP_SET; writel(val, base + USB_SUSP_CTRL); - } else { - val = readl(base + USB_PORTSC1); - val |= USB_PORTSC1_PHCD; - writel(val, base + USB_PORTSC1); - } + } else + tegra_ehci_set_phcd(&phy->u_phy, 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__); @@ -336,11 +320,8 @@ static void utmi_phy_clk_enable(struct tegra_usb_phy *phy) val = readl(base + USB_SUSP_CTRL); val &= ~USB_SUSP_CLR; writel(val, base + USB_SUSP_CTRL); - } else { - val = readl(base + USB_PORTSC1); - val &= ~USB_PORTSC1_PHCD; - writel(val, base + USB_PORTSC1); - } + } else + tegra_ehci_set_phcd(&phy->u_phy, false); if (utmi_wait_register(base + USB_SUSP_CTRL, USB_PHY_CLK_VALID, USB_PHY_CLK_VALID)) @@ -462,11 +443,8 @@ static int utmi_phy_power_on(struct tegra_usb_phy *phy) utmi_phy_clk_enable(phy); - if (!phy->is_legacy_phy) { - val = readl(base + USB_PORTSC1); - val &= ~USB_PORTSC1_PTS(~0); - writel(val, base + USB_PORTSC1); - } + if (!phy->is_legacy_phy) + tegra_ehci_set_pts(&phy->u_phy, 0); return 0; } @@ -611,10 +589,6 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy) return ret; } - val = readl(base + USB_PORTSC1); - val |= USB_PORTSC1_WKOC | USB_PORTSC1_WKDS | USB_PORTSC1_WKCN; - writel(val, base + USB_PORTSC1); - val = readl(base + USB_SUSP_CTRL); val |= USB_SUSP_CLR; writel(val, base + USB_SUSP_CTRL); @@ -629,17 +603,8 @@ static int ulpi_phy_power_on(struct tegra_usb_phy *phy) static int ulpi_phy_power_off(struct tegra_usb_phy *phy) { - unsigned long val; - void __iomem *base = phy->regs; struct tegra_ulpi_config *config = phy->config; - /* Clear WKCN/WKDS/WKOC wake-on events that can cause the USB - * Controller to immediately bring the ULPI PHY out of low power - */ - val = readl(base + USB_PORTSC1); - val &= ~(USB_PORTSC1_WKOC | USB_PORTSC1_WKDS | USB_PORTSC1_WKCN); - writel(val, base + USB_PORTSC1); - clk_disable(phy->clk); return gpio_direction_output(config->reset_gpio, 0); } |