diff options
| author |   Dario Binacchi <dariobin@libero.it> | 2021-03-22 22:33:37 +0100 |
|---|---|---|
| committer |   Jyri Sarha <jyri.sarha@iki.fi> | 2021-03-24 12:05:28 +0200 |
| commit | 976677b5958ef7f9973ea8ba952a96b7243f2c13 (patch) | |
| tree | 83062d70e39d89e3ba4315bc4697470728724a59 /drivers/gpu/drm/tilcdc | |
| parent | drm/tilcdc: fix LCD pixel clock setting (diff) | |
| download | linux-dev-976677b5958ef7f9973ea8ba952a96b7243f2c13.tar.xz linux-dev-976677b5958ef7f9973ea8ba952a96b7243f2c13.zip | |
drm/tilcdc: fix pixel clock setting warning message
The warning message did not printed the LCD pixel clock rate but the LCD
clock divisor input rate. As a consequence, the required and real pixel
clock rates are now passed to the tilcdc_pclk_diff().
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Jyri Sarha <jyri.sarha@iki.fi>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Jyri Sarha <jyri.sarha@iki.fi>
Link: https://patchwork.freedesktop.org/patch/msgid/20210322213337.26667-4-dariobin@libero.it
Diffstat (limited to 'drivers/gpu/drm/tilcdc')
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index 25278f59d165..29890d704cb4 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -203,7 +203,7 @@ static void tilcdc_crtc_set_clk(struct drm_crtc *crtc) struct drm_device *dev = crtc->dev; struct tilcdc_drm_private *priv = dev->dev_private; struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); - unsigned long clk_rate, real_rate, real_pclk_rate, pclk_rate; + unsigned long clk_rate, real_pclk_rate, pclk_rate; unsigned int clkdiv; int ret; @@ -239,12 +239,12 @@ static void tilcdc_crtc_set_clk(struct drm_crtc *crtc) * 5% is an arbitrary value - LCDs are usually quite tolerant * about pixel clock rates. */ - real_rate = clkdiv * pclk_rate; + real_pclk_rate = clk_rate / clkdiv; - if (tilcdc_pclk_diff(clk_rate, real_rate) > 5) { + if (tilcdc_pclk_diff(pclk_rate, real_pclk_rate) > 5) { dev_warn(dev->dev, - "effective pixel clock rate (%luHz) differs from the calculated rate (%luHz)\n", - clk_rate, real_rate); + "effective pixel clock rate (%luHz) differs from the requested rate (%luHz)\n", + real_pclk_rate, pclk_rate); } } |