diff options
| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-06-09 12:20:42 +0200 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2017-06-09 14:09:39 +0200 |
| commit | 54fe30888901dd14a901bd3ad1a6f5d3c4ccd4a9 (patch) | |
| tree | 574b69304985d888723649298b783bd27148d07d /drivers | |
| parent | phy: tusb1210: add support for TUSB1211 (diff) | |
| download | linux-54fe30888901dd14a901bd3ad1a6f5d3c4ccd4a9.tar.xz linux-54fe30888901dd14a901bd3ad1a6f5d3c4ccd4a9.zip | |
phy: tusb1210: implement ->set_mode()
->set_mode() can be used to tell PHY to prepare itself to enter USB
Host/Peripheral mode and that's very important for DRD
configurations.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/phy/ti/phy-tusb1210.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/phy/ti/phy-tusb1210.c b/drivers/phy/ti/phy-tusb1210.c index 5dbb9a7b4945..b8ec39ac4dfc 100644 --- a/drivers/phy/ti/phy-tusb1210.c +++ b/drivers/phy/ti/phy-tusb1210.c @@ -11,6 +11,7 @@ */ #include <linux/module.h> #include <linux/ulpi/driver.h> +#include <linux/ulpi/regs.h> #include <linux/gpio/consumer.h> #include <linux/phy/ulpi_phy.h> @@ -52,9 +53,43 @@ static int tusb1210_power_off(struct phy *phy) return 0; } +static int tusb1210_set_mode(struct phy *phy, enum phy_mode mode) +{ + struct tusb1210 *tusb = phy_get_drvdata(phy); + int ret; + + ret = ulpi_read(tusb->ulpi, ULPI_OTG_CTRL); + if (ret < 0) + return ret; + + switch (mode) { + case PHY_MODE_USB_HOST: + ret |= (ULPI_OTG_CTRL_DRVVBUS_EXT + | ULPI_OTG_CTRL_ID_PULLUP + | ULPI_OTG_CTRL_DP_PULLDOWN + | ULPI_OTG_CTRL_DM_PULLDOWN); + ulpi_write(tusb->ulpi, ULPI_OTG_CTRL, ret); + ret |= ULPI_OTG_CTRL_DRVVBUS; + break; + case PHY_MODE_USB_DEVICE: + ret &= ~(ULPI_OTG_CTRL_DRVVBUS + | ULPI_OTG_CTRL_DP_PULLDOWN + | ULPI_OTG_CTRL_DM_PULLDOWN); + ulpi_write(tusb->ulpi, ULPI_OTG_CTRL, ret); + ret &= ~ULPI_OTG_CTRL_DRVVBUS_EXT; + break; + default: + /* nothing */ + return 0; + } + + return ulpi_write(tusb->ulpi, ULPI_OTG_CTRL, ret); +} + static const struct phy_ops phy_ops = { .power_on = tusb1210_power_on, .power_off = tusb1210_power_off, + .set_mode = tusb1210_set_mode, .owner = THIS_MODULE, }; |