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drm: omapdrm: dpi: Remove unneeded regulator check 

The dpi_display_enable() function ensures that a VDDS_DSI regulator is
available if the DSI uses the VDDS_DSI supply. This is not needed, as a
failure to get the VDDS_DSI supply will result in a probe failure,
dpi_display_enable() will thus never be called in that case.

Remove the check, and replace tests for the FEAT_DPI_USES_VDDS_DSI
feature with a test for the regulator object.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Laurent Pinchart 2017-08-05 01:43:49 +03:00 committed by Tomi Valkeinen
parent afed19e46e
commit e65837b5b2
1 changed files with 3 additions and 10 deletions
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13
drivers/gpu/drm/omapdrm/dss/dpi.c
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@ -403,19 +403,13 @@ static int dpi_display_enable(struct omap_dss_device *dssdev)
mutex_lock(&dpi->lock);
if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && !dpi->vdds_dsi_reg) {
DSSERR("no VDSS_DSI regulator\n");
r = -ENODEV;
goto err_no_reg;
}
if (!out->dispc_channel_connected) {
DSSERR("failed to enable display: no output/manager\n");
r = -ENODEV;
goto err_no_out_mgr;
}
if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) {
if (dpi->vdds_dsi_reg) {
r = regulator_enable(dpi->vdds_dsi_reg);
if (r)
goto err_reg_enable;
@ -459,11 +453,10 @@ err_pll_init:
err_src_sel:
dispc_runtime_put();
err_get_dispc:
if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
if (dpi->vdds_dsi_reg)
regulator_disable(dpi->vdds_dsi_reg);
err_reg_enable:
err_no_out_mgr:
err_no_reg:
mutex_unlock(&dpi->lock);
return r;
}
@ -484,7 +477,7 @@ static void dpi_display_disable(struct omap_dss_device *dssdev)
dispc_runtime_put();
if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
if (dpi->vdds_dsi_reg)
regulator_disable(dpi->vdds_dsi_reg);
mutex_unlock(&dpi->lock);