diff options
| author | Neil Zhang <zhangwm@marvell.com> | 2011-11-30 09:57:15 +0800 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2011-12-12 11:45:24 +0200 |
| commit | 85ff7bfb6e260d7cc6d675941f5569c9b7ad6b44 (patch) | |
| tree | dc1d0967c547bdca22dcad9d3154f0bd9cf88a68 /drivers | |
| parent | 309d6d2be42c895c424a5090fcc2e95ce2d8499a (diff) | |
| download | talos-obmc-linux-85ff7bfb6e260d7cc6d675941f5569c9b7ad6b44.tar.gz talos-obmc-linux-85ff7bfb6e260d7cc6d675941f5569c9b7ad6b44.zip | |
usb: gadget: mv_udc: refine the clock relative code
Split the clock relative code from clock gating solution.
Then we can remove some duplicate code, make the code more clean.
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/mv_udc_core.c | 45 |
1 files changed, 25 insertions, 20 deletions
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 6ff0b6b238ac..77e906556378 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -1138,11 +1138,11 @@ static int udc_reset(struct mv_udc *udc) return 0; } -static int mv_udc_enable(struct mv_udc *udc) +static int mv_udc_enable_internal(struct mv_udc *udc) { int retval; - if (udc->clock_gating == 0 || udc->active) + if (udc->active) return 0; dev_dbg(&udc->dev->dev, "enable udc\n"); @@ -1161,9 +1161,17 @@ static int mv_udc_enable(struct mv_udc *udc) return 0; } -static void mv_udc_disable(struct mv_udc *udc) +static int mv_udc_enable(struct mv_udc *udc) { - if (udc->clock_gating && udc->active) { + if (udc->clock_gating) + return mv_udc_enable_internal(udc); + + return 0; +} + +static void mv_udc_disable_internal(struct mv_udc *udc) +{ + if (udc->active) { dev_dbg(&udc->dev->dev, "disable udc\n"); if (udc->pdata->phy_deinit) udc->pdata->phy_deinit(udc->phy_regs); @@ -1172,6 +1180,12 @@ static void mv_udc_disable(struct mv_udc *udc) } } +static void mv_udc_disable(struct mv_udc *udc) +{ + if (udc->clock_gating) + mv_udc_disable_internal(udc); +} + static int mv_udc_get_frame(struct usb_gadget *gadget) { struct mv_udc *udc; @@ -2253,14 +2267,9 @@ static int __devinit mv_udc_probe(struct platform_device *dev) } /* we will acces controller register, so enable the clk */ - udc_clock_enable(udc); - if (pdata->phy_init) { - retval = pdata->phy_init(udc->phy_regs); - if (retval) { - dev_err(&dev->dev, "phy init error %d\n", retval); - goto err_iounmap_phyreg; - } - } + retval = mv_udc_enable_internal(udc); + if (retval) + goto err_iounmap_phyreg; udc->op_regs = (struct mv_op_regs __iomem *)((u32)udc->cap_regs + (readl(&udc->cap_regs->caplength_hciversion) @@ -2388,11 +2397,9 @@ static int __devinit mv_udc_probe(struct platform_device *dev) * If not, it means that VBUS detection is not supported, we * have to enable vbus active all the time to let controller work. */ - if (udc->clock_gating) { - if (udc->pdata->phy_deinit) - udc->pdata->phy_deinit(udc->phy_regs); - udc_clock_disable(udc); - } else + if (udc->clock_gating) + mv_udc_disable_internal(udc); + else udc->vbus_active = 1; retval = usb_add_gadget_udc(&dev->dev, &udc->gadget); @@ -2422,9 +2429,7 @@ err_free_dma: dma_free_coherent(&dev->dev, udc->ep_dqh_size, udc->ep_dqh, udc->ep_dqh_dma); err_disable_clock: - if (udc->pdata->phy_deinit) - udc->pdata->phy_deinit(udc->phy_regs); - udc_clock_disable(udc); + mv_udc_disable_internal(udc); err_iounmap_phyreg: iounmap((void *)udc->phy_regs); err_iounmap_capreg: |
