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drm/omap: dsi: lp/hs switching support for transfer()

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Integrate low-power / high-speed bus switching into transfer
function and drop the omapdrm specific enable_hs() callback.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-24-tomi.valkeinen@ti.com
This commit is contained in:
Sebastian Reichel 2020-12-15 12:45:56 +02:00 committed by Tomi Valkeinen
parent 61714cd309
commit 3220034b12
3 changed files with 10 additions and 7 deletions
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6
drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
View File

@ -269,7 +269,7 @@ static int dsicm_exit_ulps(struct panel_drv_data *ddata)
return 0;
src->ops->enable(src);
src->ops->dsi.enable_hs(src, ddata->dsi->channel, true);
ddata->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
r = _dsicm_enable_te(ddata, true);
if (r) {
@ -573,7 +573,7 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
dsicm_hw_reset(ddata);
src->ops->dsi.enable_hs(src, ddata->dsi->channel, false);
ddata->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
r = dsicm_sleep_out(ddata);
if (r)
@ -616,7 +616,7 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
ddata->intro_printed = true;
}
src->ops->dsi.enable_hs(src, ddata->dsi->channel, true);
ddata->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
return 0;
err:

9
drivers/gpu/drm/omapdrm/dss/dsi.c
View File

@ -329,6 +329,7 @@ struct dsi_data {
int irq;
bool is_enabled;
bool in_lp_mode;
struct clk *dss_clk;
struct regmap *syscon;
@ -2433,6 +2434,8 @@ static void dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel,
/* start the DDR clock by sending a NULL packet */
if (dsi->vm_timings.ddr_clk_always_on && enable)
dsi_vc_send_null(dsi, channel);
dsi->in_lp_mode = !enable;
}
static void dsi_vc_flush_long_data(struct dsi_data *dsi, int channel)
@ -4690,6 +4693,10 @@ static ssize_t omap_dsi_host_transfer(struct mipi_dsi_host *host,
struct dsi_data *dsi = host_to_omap(host);
struct omap_dss_device *dssdev = &dsi->output;
if (!!(msg->flags & MIPI_DSI_MSG_USE_LPM) != dsi->in_lp_mode)
dsi_vc_enable_hs(dssdev, msg->channel,
!(msg->flags & MIPI_DSI_MSG_USE_LPM));
switch (msg->type) {
case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM:
case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM:
@ -4750,8 +4757,6 @@ static const struct omap_dss_device_ops dsi_ops = {
.disable = dsi_display_disable,
.enable_hs = dsi_vc_enable_hs,
.set_config = dsi_set_config,
.enable_video_output = dsi_enable_video_output,

2
drivers/gpu/drm/omapdrm/dss/omapdss.h
View File

@ -291,8 +291,6 @@ struct omapdss_dsi_ops {
int (*set_config)(struct omap_dss_device *dssdev,
const struct omap_dss_dsi_config *cfg);
void (*enable_hs)(struct omap_dss_device *dssdev, int channel,
bool enable);
int (*enable_te)(struct omap_dss_device *dssdev, bool enable);
int (*update)(struct omap_dss_device *dssdev, int channel,