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SubjectRe: [PATCH v2 04/30] usb: phy: nop: Handle power supply regulator for the PHY
On Mon, Jan 28, 2013 at 01:30:05PM +0200, Roger Quadros wrote:
> We use "vcc" as the supply name for the PHY's power supply.
> The power supply will be enabled during .init() and disabled
> during .shutdown()
>
> Signed-off-by: Roger Quadros <rogerq@ti.com>

Acked-by: Felipe Balbi <balbi@ti.com>

> ---
> drivers/usb/otg/nop-usb-xceiv.c | 18 ++++++++++++++++++
> 1 files changed, 18 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c
> index 849eb9d..0a9628c 100644
> --- a/drivers/usb/otg/nop-usb-xceiv.c
> +++ b/drivers/usb/otg/nop-usb-xceiv.c
> @@ -33,11 +33,13 @@
> #include <linux/usb/nop-usb-xceiv.h>
> #include <linux/slab.h>
> #include <linux/clk.h>
> +#include <linux/regulator/consumer.h>
>
> struct nop_usb_xceiv {
> struct usb_phy phy;
> struct device *dev;
> struct clk *clk;
> + struct regulator *vcc;
> };
>
> static struct platform_device *pd;
> @@ -70,6 +72,11 @@ static int nop_init(struct usb_phy *phy)
> {
> struct nop_usb_xceiv *nop = dev_get_drvdata(phy->dev);
>
> + if (!IS_ERR(nop->vcc)) {
> + if (regulator_enable(nop->vcc))
> + dev_err(phy->dev, "Failed to enable power\n");
> + }
> +
> if (!IS_ERR(nop->clk))
> clk_enable(nop->clk);
>
> @@ -82,6 +89,11 @@ static void nop_shutdown(struct usb_phy *phy)
>
> if (!IS_ERR(nop->clk))
> clk_disable(nop->clk);
> +
> + if (!IS_ERR(nop->vcc)) {
> + if (regulator_disable(nop->vcc))
> + dev_err(phy->dev, "Failed to disable power\n");
> + }
> }
>
> static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
> @@ -153,6 +165,12 @@ static int nop_usb_xceiv_probe(struct platform_device *pdev)
> }
> }
>
> + nop->vcc = devm_regulator_get(&pdev->dev, "vcc");
> + if (IS_ERR(nop->vcc)) {
> + dev_dbg(&pdev->dev, "Error getting vcc regulator: %ld\n",
> + PTR_ERR(nop->vcc));
> + }
> +
> nop->dev = &pdev->dev;
> nop->phy.dev = nop->dev;
> nop->phy.label = "nop-xceiv";
> --
> 1.7.4.1
>

--
balbi
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