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| author | Robert Chiras <robert.chiras@nxp.com> | 2019-08-29 14:30:02 +0300 |
|---|---|---|
| committer | Stefan Agner <stefan@agner.ch> | 2019-10-14 22:19:22 +0200 |
| commit | d02340436695cbf6920ae1aaaed8afdc8635468d (patch) | |
| tree | 6d5737850c7d4120f29693afd2e235c9febcf872 /drivers/gpu/drm/mxsfb/mxsfb_crtc.c | |
| parent | 67c698fc5eb0f7471f28e10cd6960e5cf6426de1 (diff) | |
| download | lwn-d02340436695cbf6920ae1aaaed8afdc8635468d.tar.gz lwn-d02340436695cbf6920ae1aaaed8afdc8635468d.zip | |
drm/mxsfb: Update mxsfb to support a bridge
Currently, the MXSFB DRM driver only supports a panel. But, its output
display signal can also be redirected to another encoder, like a DSI
controller. In this case, that DSI controller may act like a drm_bridge.
In order support this use-case too, this patch adds support for drm_bridge
in mxsfb.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
Tested-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1567078215-31601-2-git-send-email-robert.chiras@nxp.com
Diffstat (limited to 'drivers/gpu/drm/mxsfb/mxsfb_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/mxsfb/mxsfb_crtc.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_crtc.c b/drivers/gpu/drm/mxsfb/mxsfb_crtc.c index 12421567af89..de09b93e60ea 100644 --- a/drivers/gpu/drm/mxsfb/mxsfb_crtc.c +++ b/drivers/gpu/drm/mxsfb/mxsfb_crtc.c @@ -95,8 +95,11 @@ static void mxsfb_set_bus_fmt(struct mxsfb_drm_private *mxsfb) reg = readl(mxsfb->base + LCDC_CTRL); - if (mxsfb->connector.display_info.num_bus_formats) - bus_format = mxsfb->connector.display_info.bus_formats[0]; + if (mxsfb->connector->display_info.num_bus_formats) + bus_format = mxsfb->connector->display_info.bus_formats[0]; + + DRM_DEV_DEBUG_DRIVER(drm->dev, "Using bus_format: 0x%08X\n", + bus_format); reg &= ~CTRL_BUS_WIDTH_MASK; switch (bus_format) { @@ -204,8 +207,9 @@ static dma_addr_t mxsfb_get_fb_paddr(struct mxsfb_drm_private *mxsfb) static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb) { + struct drm_device *drm = mxsfb->pipe.crtc.dev; struct drm_display_mode *m = &mxsfb->pipe.crtc.state->adjusted_mode; - const u32 bus_flags = mxsfb->connector.display_info.bus_flags; + const u32 bus_flags = mxsfb->connector->display_info.bus_flags; u32 vdctrl0, vsync_pulse_len, hsync_pulse_len; int err; @@ -229,6 +233,13 @@ static void mxsfb_crtc_mode_set_nofb(struct mxsfb_drm_private *mxsfb) clk_set_rate(mxsfb->clk, m->crtc_clock * 1000); + DRM_DEV_DEBUG_DRIVER(drm->dev, "Pixel clock: %dkHz (actual: %dkHz)\n", + m->crtc_clock, + (int)(clk_get_rate(mxsfb->clk) / 1000)); + DRM_DEV_DEBUG_DRIVER(drm->dev, "Connector bus_flags: 0x%08X\n", + bus_flags); + DRM_DEV_DEBUG_DRIVER(drm->dev, "Mode flags: 0x%08X\n", m->flags); + writel(TRANSFER_COUNT_SET_VCOUNT(m->crtc_vdisplay) | TRANSFER_COUNT_SET_HCOUNT(m->crtc_hdisplay), mxsfb->base + mxsfb->devdata->transfer_count); |