diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2014-03-28 15:27:32 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-05-23 12:02:57 -0300 |
| commit | 05b1b986b540fe48f98a09b087b054754d67ef41 (patch) | |
| tree | dcd07a9d12a358ec4982235f5d5b2cf5d248c754 /drivers/staging/media/omap4iss/iss_csi2.c | |
| parent | 47a963f1025690824a3f00e27d1d161a0f01cd88 (diff) | |
| download | talos-op-linux-05b1b986b540fe48f98a09b087b054754d67ef41.tar.gz talos-op-linux-05b1b986b540fe48f98a09b087b054754d67ef41.zip | |
[media] omap4iss: Use a common macro for all sleep-based poll loops
Instead of implementing usleep_range-based poll loops manually (and
slightly differently), create a generic iss_poll_wait_timeout() macro
and use it through the driver.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/staging/media/omap4iss/iss_csi2.c')
| -rw-r--r-- | drivers/staging/media/omap4iss/iss_csi2.c | 39 |
1 files changed, 11 insertions, 28 deletions
diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c index 61fc350eb251..3296115525d7 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.c +++ b/drivers/staging/media/omap4iss/iss_csi2.c @@ -487,9 +487,7 @@ static void csi2_irq_status_set(struct iss_csi2_device *csi2, int enable) */ int omap4iss_csi2_reset(struct iss_csi2_device *csi2) { - u8 soft_reset_retries = 0; - u32 reg; - int i; + unsigned int timeout; if (!csi2->available) return -ENODEV; @@ -500,37 +498,22 @@ int omap4iss_csi2_reset(struct iss_csi2_device *csi2) iss_reg_set(csi2->iss, csi2->regs1, CSI2_SYSCONFIG, CSI2_SYSCONFIG_SOFT_RESET); - do { - reg = iss_reg_read(csi2->iss, csi2->regs1, CSI2_SYSSTATUS) - & CSI2_SYSSTATUS_RESET_DONE; - if (reg == CSI2_SYSSTATUS_RESET_DONE) - break; - soft_reset_retries++; - if (soft_reset_retries < 5) - usleep_range(100, 100); - } while (soft_reset_retries < 5); - - if (soft_reset_retries == 5) { - dev_err(csi2->iss->dev, - "CSI2: Soft reset try count exceeded!\n"); + timeout = iss_poll_condition_timeout( + iss_reg_read(csi2->iss, csi2->regs1, CSI2_SYSSTATUS) & + CSI2_SYSSTATUS_RESET_DONE, 500, 100, 100); + if (timeout) { + dev_err(csi2->iss->dev, "CSI2: Soft reset timeout!\n"); return -EBUSY; } iss_reg_set(csi2->iss, csi2->regs1, CSI2_COMPLEXIO_CFG, CSI2_COMPLEXIO_CFG_RESET_CTRL); - i = 100; - do { - reg = iss_reg_read(csi2->iss, csi2->phy->phy_regs, REGISTER1) - & REGISTER1_RESET_DONE_CTRLCLK; - if (reg == REGISTER1_RESET_DONE_CTRLCLK) - break; - usleep_range(100, 100); - } while (--i > 0); - - if (i == 0) { - dev_err(csi2->iss->dev, - "CSI2: Reset for CSI2_96M_FCLK domain Failed!\n"); + timeout = iss_poll_condition_timeout( + iss_reg_read(csi2->iss, csi2->phy->phy_regs, REGISTER1) & + REGISTER1_RESET_DONE_CTRLCLK, 10000, 100, 100); + if (timeout) { + dev_err(csi2->iss->dev, "CSI2: CSI2_96M_FCLK reset timeout!\n"); return -EBUSY; } |
