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| author | Otto Pflüger <otto.pflueger@abscue.de> | 2022-12-01 19:02:43 +0300 |
|---|---|---|
| committer | Noralf Trønnes <noralf@tronnes.org> | 2022-12-14 16:57:09 +0300 |
| commit | 3b1fb8b3a3f8a4e645ef580edaeed35ec3f73c38 (patch) | |
| tree | 9f378d4cf134beb7619d375b95c5a7672cd7e286 /drivers/gpu/drm/drm_mipi_dbi.c | |
| parent | 58377de46eee1e0066c93f659c91a809432d024c (diff) | |
| download | linux-3b1fb8b3a3f8a4e645ef580edaeed35ec3f73c38.tar.xz | |
drm/mipi-dbi: Support separate I/O regulator
The MIPI DBI specification defines separate vdd (panel power) and
vddi (I/O voltage) supplies. Displays that require different voltages
for the different supplies do exist, so the supplies cannot be
combined into one as they are now. Add a new io_regulator property to
the mipi_dbi_dev struct which can be set by the panel driver along
with the regulator property.
Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221201160245.2093816-2-otto.pflueger@abscue.de
Diffstat (limited to 'drivers/gpu/drm/drm_mipi_dbi.c')
| -rw-r--r-- | drivers/gpu/drm/drm_mipi_dbi.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c index eb27d000bcfb..c871d9f096b8 100644 --- a/drivers/gpu/drm/drm_mipi_dbi.c +++ b/drivers/gpu/drm/drm_mipi_dbi.c @@ -417,6 +417,8 @@ void mipi_dbi_pipe_disable(struct drm_simple_display_pipe *pipe) if (dbidev->regulator) regulator_disable(dbidev->regulator); + if (dbidev->io_regulator) + regulator_disable(dbidev->io_regulator); } EXPORT_SYMBOL(mipi_dbi_pipe_disable); @@ -726,6 +728,16 @@ static int mipi_dbi_poweron_reset_conditional(struct mipi_dbi_dev *dbidev, bool } } + if (dbidev->io_regulator) { + ret = regulator_enable(dbidev->io_regulator); + if (ret) { + DRM_DEV_ERROR(dev, "Failed to enable I/O regulator (%d)\n", ret); + if (dbidev->regulator) + regulator_disable(dbidev->regulator); + return ret; + } + } + if (cond && mipi_dbi_display_is_on(dbi)) return 1; @@ -735,6 +747,8 @@ static int mipi_dbi_poweron_reset_conditional(struct mipi_dbi_dev *dbidev, bool DRM_DEV_ERROR(dev, "Failed to send reset command (%d)\n", ret); if (dbidev->regulator) regulator_disable(dbidev->regulator); + if (dbidev->io_regulator) + regulator_disable(dbidev->io_regulator); return ret; } |