@@ -14,9 +14,12 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
+#include <drm/drm_encoder.h>
#include <drm/drm_modes.h>
#include <drm/drm_of.h>
+#include <uapi/drm/drm_mode.h>
+
#include <linux/component.h>
#include <linux/ioport.h>
#include <linux/of_address.h>
@@ -112,23 +115,13 @@ EXPORT_SYMBOL(sun4i_tcon_enable_vblank);
void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,
struct drm_encoder *encoder)
{
- u32 val;
-
- if (!tcon->quirks->has_unknown_mux)
- return;
+ int ret = -ENOTSUPP;
- if (channel != 1)
- return;
-
- if (encoder->encoder_type == DRM_MODE_ENCODER_TVDAC)
- val = 1;
- else
- val = 0;
+ if (tcon->quirks->set_mux)
+ ret = tcon->quirks->set_mux(tcon, encoder);
- /*
- * FIXME: Undocumented bits
- */
- regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, val);
+ DRM_DEBUG_DRIVER("Muxing encoder %s to CRTC %s: %d\n",
+ encoder->name, encoder->crtc->name, ret);
}
EXPORT_SYMBOL(sun4i_tcon_set_mux);
@@ -767,9 +760,27 @@ static int sun4i_tcon_remove(struct platform_device *pdev)
return 0;
}
+/* platform specific TCON muxing callbacks */
+static int sun5i_a13_tcon_set_mux(struct sun4i_tcon *tcon,
+ struct drm_encoder *encoder)
+{
+ u32 val;
+
+ if (encoder->encoder_type == DRM_MODE_ENCODER_TVDAC)
+ val = 1;
+ else
+ val = 0;
+
+ /*
+ * FIXME: Undocumented bits
+ */
+ return regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, val);
+}
+
static const struct sun4i_tcon_quirks sun5i_a13_quirks = {
- .has_unknown_mux = true,
- .has_channel_1 = true,
+ .has_unknown_mux = true,
+ .has_channel_1 = true,
+ .set_mux = sun5i_a13_tcon_set_mux,
};
static const struct sun4i_tcon_quirks sun6i_a31_quirks = {
@@ -145,10 +145,15 @@
#define SUN4I_TCON_MAX_CHANNELS 2
+struct sun4i_tcon;
+
struct sun4i_tcon_quirks {
bool has_unknown_mux; /* sun5i has undocumented mux */
bool has_channel_1; /* a33 does not have channel 1 */
bool needs_de_be_mux; /* sun6i needs mux to select backend */
+
+ /* callback to handle tcon muxing options */
+ int (*set_mux)(struct sun4i_tcon *, struct drm_encoder *);
};
struct sun4i_tcon {
Different SoCs have different muxing options and values for the TCON outputs. Instead of stuffing every possibility in sun4i_tcon_set_mux(), add a callback pointer to sun4i_tcon_quirks that each TCON variant can use to provide muxing support. The current muxing options in sun4i_tcon_set_mux() for sun5i-a13 are moved to a new sun5i-specific callback function. Signed-off-by: Chen-Yu Tsai <wens@csie.org> --- drivers/gpu/drm/sun4i/sun4i_tcon.c | 45 ++++++++++++++++++++++++-------------- drivers/gpu/drm/sun4i/sun4i_tcon.h | 5 +++++ 2 files changed, 33 insertions(+), 17 deletions(-)