diff options
Diffstat (limited to 'drivers/gpu/drm/arm/hdlcd_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/arm/hdlcd_crtc.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/gpu/drm/arm/hdlcd_crtc.c b/drivers/gpu/drm/arm/hdlcd_crtc.c index 0b2b62f8fa3c..af67fefed38d 100644 --- a/drivers/gpu/drm/arm/hdlcd_crtc.c +++ b/drivers/gpu/drm/arm/hdlcd_crtc.c @@ -9,7 +9,12 @@ * Implementation of a CRTC class for the HDLCD driver. */ -#include <drm/drmP.h> +#include <linux/clk.h> +#include <linux/of_graph.h> +#include <linux/platform_data/simplefb.h> + +#include <video/videomode.h> + #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc.h> @@ -19,10 +24,7 @@ #include <drm/drm_of.h> #include <drm/drm_plane_helper.h> #include <drm/drm_probe_helper.h> -#include <linux/clk.h> -#include <linux/of_graph.h> -#include <linux/platform_data/simplefb.h> -#include <video/videomode.h> +#include <drm/drm_vblank.h> #include "hdlcd_drv.h" #include "hdlcd_regs.h" @@ -186,20 +188,20 @@ static void hdlcd_crtc_atomic_disable(struct drm_crtc *crtc, clk_disable_unprepare(hdlcd->clk); } -static int hdlcd_crtc_atomic_check(struct drm_crtc *crtc, - struct drm_crtc_state *state) +static enum drm_mode_status hdlcd_crtc_mode_valid(struct drm_crtc *crtc, + const struct drm_display_mode *mode) { struct hdlcd_drm_private *hdlcd = crtc_to_hdlcd_priv(crtc); - struct drm_display_mode *mode = &state->adjusted_mode; long rate, clk_rate = mode->clock * 1000; rate = clk_round_rate(hdlcd->clk, clk_rate); - if (rate != clk_rate) { + /* 0.1% seems a close enough tolerance for the TDA19988 on Juno */ + if (abs(rate - clk_rate) * 1000 > clk_rate) { /* clock required by mode not supported by hardware */ - return -EINVAL; + return MODE_NOCLOCK; } - return 0; + return MODE_OK; } static void hdlcd_crtc_atomic_begin(struct drm_crtc *crtc, @@ -220,7 +222,7 @@ static void hdlcd_crtc_atomic_begin(struct drm_crtc *crtc, } static const struct drm_crtc_helper_funcs hdlcd_crtc_helper_funcs = { - .atomic_check = hdlcd_crtc_atomic_check, + .mode_valid = hdlcd_crtc_mode_valid, .atomic_begin = hdlcd_crtc_atomic_begin, .atomic_enable = hdlcd_crtc_atomic_enable, .atomic_disable = hdlcd_crtc_atomic_disable, |