diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2021-02-15 07:27:29 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-03-11 13:59:52 +0300 |
| commit | 6e1de0062768ffaf780fd4a07f98723174653052 (patch) | |
| tree | cc79760f48860b8b542586fdb8986f2c20eed96a /drivers | |
| parent | 421ba86abfa6878dcf0095aeae4972fc78210bdd (diff) | |
| download | linux-6e1de0062768ffaf780fd4a07f98723174653052.tar.xz | |
media: imx: imx7_mipi_csis: Avoid double get of wrap clock
The wrap clock is retrieved with the other clocks using
devm_clk_bulk_get(), and retrieved independently with a specific
devm_clk_get() call. The latter isn't needed, replace it with usage of
the wrap clock from the bulk array.
As the wrap clock is mandatory, simplify its usage further by removing
conditionals.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/media/imx/imx7-mipi-csis.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c index c153a77c3784..816650c438aa 100644 --- a/drivers/staging/media/imx/imx7-mipi-csis.c +++ b/drivers/staging/media/imx/imx7-mipi-csis.c @@ -206,7 +206,17 @@ static const struct mipi_csis_event mipi_csis_events[] = { #define MIPI_CSIS_NUM_EVENTS ARRAY_SIZE(mipi_csis_events) -static const char * const mipi_csis_clk_id[] = {"pclk", "wrap", "phy"}; +enum mipi_csis_clk { + MIPI_CSIS_CLK_PCLK, + MIPI_CSIS_CLK_WRAP, + MIPI_CSIS_CLK_PHY, +}; + +static const char * const mipi_csis_clk_id[] = { + "pclk", + "wrap", + "phy", +}; struct csis_hw_reset { struct regmap *src; @@ -229,7 +239,6 @@ struct csi_state { struct platform_device *pdev; struct phy *phy; void __iomem *regs; - struct clk *wrap_clk; int irq; u32 flags; @@ -507,12 +516,7 @@ static void mipi_csis_set_params(struct csi_state *state) mipi_csis_write(state, MIPI_CSIS_ISPSYNC_CH0, val); val = mipi_csis_read(state, MIPI_CSIS_CLK_CTRL); - val &= ~MIPI_CSIS_CLK_CTRL_WCLK_SRC; - if (state->wrap_clk) - val |= MIPI_CSIS_CLK_CTRL_WCLK_SRC; - else - val &= ~MIPI_CSIS_CLK_CTRL_WCLK_SRC; - + val |= MIPI_CSIS_CLK_CTRL_WCLK_SRC; val |= MIPI_CSIS_CLK_CTRL_CLKGATE_TRAIL_CH0(15); val &= ~MIPI_CSIS_CLK_CTRL_CLKGATE_EN_MSK; mipi_csis_write(state, MIPI_CSIS_CLK_CTRL, val); @@ -557,12 +561,9 @@ static int mipi_csis_clk_get(struct csi_state *state) if (ret < 0) return ret; - state->wrap_clk = devm_clk_get(dev, "wrap"); - if (IS_ERR(state->wrap_clk)) - return PTR_ERR(state->wrap_clk); - /* Set clock rate */ - ret = clk_set_rate(state->wrap_clk, state->clk_frequency); + ret = clk_set_rate(state->clks[MIPI_CSIS_CLK_WRAP].clk, + state->clk_frequency); if (ret < 0) dev_err(dev, "set rate=%d failed: %d\n", state->clk_frequency, ret); @@ -1149,9 +1150,9 @@ static int mipi_csis_probe(struct platform_device *pdev) goto unregister_all; } - dev_info(&pdev->dev, "lanes: %d, hs_settle: %d, wclk: %d, freq: %u\n", + dev_info(&pdev->dev, "lanes: %d, hs_settle: %d, freq: %u\n", state->bus.num_data_lanes, state->hs_settle, - state->wrap_clk ? 1 : 0, state->clk_frequency); + state->clk_frequency); return 0; |