On Friday 09 June 2017 03:50 PM, Felipe Balbi wrote:
> ->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@xxxxxxxxxxxxxxx>
>
> changes since v1:
> - rebase on PHY -next
removed this changelog and merged,
Thanks
Kishon
>
>
> ---
> drivers/phy/ti/phy-tusb1210.c | 35 +++++++++++++++++++++++++++++++++++
> 1 file changed, 35 insertions(+)
>
> 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,
> };
>
>
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