diff options
| -rw-r--r-- | drivers/staging/media/omap4iss/iss.c | 46 | ||||
| -rw-r--r-- | drivers/staging/media/omap4iss/iss.h | 14 | ||||
| -rw-r--r-- | drivers/staging/media/omap4iss/iss_csi2.c | 39 |
3 files changed, 45 insertions, 54 deletions
diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index 219519d0f029..217d719625ce 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -734,18 +734,17 @@ static int iss_pipeline_is_last(struct media_entity *me) static int iss_reset(struct iss_device *iss) { - unsigned long timeout = 0; + unsigned int timeout; iss_reg_set(iss, OMAP4_ISS_MEM_TOP, ISS_HL_SYSCONFIG, ISS_HL_SYSCONFIG_SOFTRESET); - while (iss_reg_read(iss, OMAP4_ISS_MEM_TOP, ISS_HL_SYSCONFIG) & - ISS_HL_SYSCONFIG_SOFTRESET) { - if (timeout++ > 100) { - dev_alert(iss->dev, "cannot reset ISS\n"); - return -ETIMEDOUT; - } - usleep_range(10, 10); + timeout = iss_poll_condition_timeout( + !(iss_reg_read(iss, OMAP4_ISS_MEM_TOP, ISS_HL_SYSCONFIG) & + ISS_HL_SYSCONFIG_SOFTRESET), 1000, 10, 10); + if (timeout) { + dev_err(iss->dev, "ISS reset timeout\n"); + return -ETIMEDOUT; } iss->crashed = 0; @@ -754,7 +753,7 @@ static int iss_reset(struct iss_device *iss) static int iss_isp_reset(struct iss_device *iss) { - unsigned long timeout = 0; + unsigned int timeout; /* Fist, ensure that the ISP is IDLE (no transactions happening) */ iss_reg_update(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_SYSCONFIG, @@ -763,29 +762,24 @@ static int iss_isp_reset(struct iss_device *iss) iss_reg_set(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_CTRL, ISP5_CTRL_MSTANDBY); - for (;;) { - if (iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_CTRL) & - ISP5_CTRL_MSTANDBY_WAIT) - break; - if (timeout++ > 1000) { - dev_alert(iss->dev, "cannot set ISP5 to standby\n"); - return -ETIMEDOUT; - } - usleep_range(1000, 1500); + timeout = iss_poll_condition_timeout( + iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_CTRL) & + ISP5_CTRL_MSTANDBY_WAIT, 1000000, 1000, 1500); + if (timeout) { + dev_err(iss->dev, "ISP5 standby timeout\n"); + return -ETIMEDOUT; } /* Now finally, do the reset */ iss_reg_set(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_SYSCONFIG, ISP5_SYSCONFIG_SOFTRESET); - timeout = 0; - while (iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_SYSCONFIG) & - ISP5_SYSCONFIG_SOFTRESET) { - if (timeout++ > 1000) { - dev_alert(iss->dev, "cannot reset ISP5\n"); - return -ETIMEDOUT; - } - usleep_range(1000, 1500); + timeout = iss_poll_condition_timeout( + !(iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_SYSCONFIG) & + ISP5_SYSCONFIG_SOFTRESET), 1000000, 1000, 1500); + if (timeout) { + dev_err(iss->dev, "ISP5 reset timeout\n"); + return -ETIMEDOUT; } return 0; diff --git a/drivers/staging/media/omap4iss/iss.h b/drivers/staging/media/omap4iss/iss.h index 346db9233171..05cd9bf3b41f 100644 --- a/drivers/staging/media/omap4iss/iss.h +++ b/drivers/staging/media/omap4iss/iss.h @@ -233,4 +233,18 @@ void iss_reg_update(struct iss_device *iss, enum iss_mem_resources res, iss_reg_write(iss, res, offset, (v & ~clr) | set); } +#define iss_poll_condition_timeout(cond, timeout, min_ival, max_ival) \ +({ \ + unsigned long __timeout = jiffies + usecs_to_jiffies(timeout); \ + unsigned int __min_ival = (min_ival); \ + unsigned int __max_ival = (max_ival); \ + bool __cond; \ + while (!(__cond = (cond))) { \ + if (time_after(jiffies, __timeout)) \ + break; \ + usleep_range(__min_ival, __max_ival); \ + } \ + !__cond; \ +}) + #endif /* _OMAP4_ISS_H_ */ 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; } |