diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2017-10-10 06:19:58 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-10-11 10:52:36 +0300 |
| commit | ad537fb2abb0a10e60f702cd1ff14666f54457e3 (patch) | |
| tree | 91b377f968b01966cbbf32a3a3e7127463a2588a /drivers/gpu/drm | |
| parent | d5532f65e0465af2361c8beefe6ed396025316a3 (diff) | |
| download | linux-ad537fb2abb0a10e60f702cd1ff14666f54457e3.tar.xz | |
drm/sun4i: tcon: Add variant callback for TCON output muxing
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.
Since the new callback replaces what the .has_unknown_mux field in
tcon quirks did in the past, the field is removed.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171010032008.682-2-wens@csie.org
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_tcon.c | 44 | ||||
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_tcon.h | 6 |
2 files changed, 32 insertions, 18 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index e853dfe51389..75124043d655 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -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 +760,26 @@ 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_channel_1 = true, + .set_mux = sun5i_a13_tcon_set_mux, }; static const struct sun4i_tcon_quirks sun6i_a31_quirks = { diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h index 5a219d1ccc26..d9e1357cc8ae 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.h +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h @@ -145,10 +145,14 @@ #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 { |