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| author |   Jingoo Han <jg1.han@samsung.com> | 2012-07-18 18:50:59 +0900 |
|---|---|---|
| committer |   Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-07-24 20:56:18 +0000 |
| commit | a2c81bc12c81189928a03a94da1565d0c14e32eb (patch) | |
| tree | e9f20a421b085d2b50e780e97a10cc0bbca86008 /drivers/video/exynos | |
| parent | video: exynos_dp: check the only INTERLANE_ALIGN_DONE bit during Link Training (diff) | |
| download | linux-dev-a2c81bc12c81189928a03a94da1565d0c14e32eb.tar.xz linux-dev-a2c81bc12c81189928a03a94da1565d0c14e32eb.zip | |
video: exynos_dp: use usleep_range instead of delay
This patch replaces udelay and mdelay with usleep_range to remove
the busy loop waiting.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/exynos')
| -rw-r--r-- | drivers/video/exynos/exynos_dp_core.c | 14 | ||||
| -rw-r--r-- | drivers/video/exynos/exynos_dp_reg.c | 4 |
2 files changed, 9 insertions, 9 deletions
diff --git a/drivers/video/exynos/exynos_dp_core.c b/drivers/video/exynos/exynos_dp_core.c index 0f3a64baecc9..c6c016a506ce 100644 --- a/drivers/video/exynos/exynos_dp_core.c +++ b/drivers/video/exynos/exynos_dp_core.c @@ -47,7 +47,7 @@ static int exynos_dp_detect_hpd(struct exynos_dp_device *dp) exynos_dp_init_hpd(dp); - udelay(200); + usleep_range(200, 210); while (exynos_dp_get_plug_in_status(dp) != 0) { timeout_loop++; @@ -55,7 +55,7 @@ static int exynos_dp_detect_hpd(struct exynos_dp_device *dp) dev_err(dp->dev, "failed to get hpd plug status\n"); return -ETIMEDOUT; } - udelay(10); + usleep_range(10, 11); } return 0; @@ -486,7 +486,7 @@ static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp) u8 pre_emphasis; u8 training_lane; - udelay(100); + usleep_range(100, 101); exynos_dp_read_bytes_from_dpcd(dp, DPCD_ADDR_LANE0_1_STATUS, 6, link_status); @@ -571,7 +571,7 @@ static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp) u8 adjust_request[2]; - udelay(400); + usleep_range(400, 401); exynos_dp_read_bytes_from_dpcd(dp, DPCD_ADDR_LANE0_1_STATUS, 6, link_status); @@ -739,7 +739,7 @@ static int exynos_dp_set_link_train(struct exynos_dp_device *dp, if (retval == 0) break; - udelay(100); + usleep_range(100, 110); } return retval; @@ -773,7 +773,7 @@ static int exynos_dp_config_video(struct exynos_dp_device *dp, return -ETIMEDOUT; } - udelay(1); + usleep_range(1, 2); } /* Set to use the register calculated M/N video */ @@ -807,7 +807,7 @@ static int exynos_dp_config_video(struct exynos_dp_device *dp, return -ETIMEDOUT; } - mdelay(1); + usleep_range(1000, 1001); } if (retval != 0) diff --git a/drivers/video/exynos/exynos_dp_reg.c b/drivers/video/exynos/exynos_dp_reg.c index 6ce76d56c3a1..ce401c83f638 100644 --- a/drivers/video/exynos/exynos_dp_reg.c +++ b/drivers/video/exynos/exynos_dp_reg.c @@ -122,7 +122,7 @@ void exynos_dp_reset(struct exynos_dp_device *dp) LS_CLK_DOMAIN_FUNC_EN_N; writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2); - udelay(20); + usleep_range(20, 30); exynos_dp_lane_swap(dp, 0); @@ -988,7 +988,7 @@ void exynos_dp_reset_macro(struct exynos_dp_device *dp) writel(reg, dp->reg_base + EXYNOS_DP_PHY_TEST); /* 10 us is the minimum reset time. */ - udelay(10); + usleep_range(10, 20); reg &= ~MACRO_RST; writel(reg, dp->reg_base + EXYNOS_DP_PHY_TEST); |