drm/mipi: use dcs write for mipi_dsi_dcs_set_tear_scanline
[ Upstream commit5.4-rM2-2.2.x-imx-squashed7a05c3b6d2
] The helper uses the MIPI_DCS_SET_TEAR_SCANLINE, although it's currently using the generic write. This does not look right. Perhaps some platforms don't distinguish between the two writers? Cc: Robert Chiras <robert.chiras@nxp.com> Cc: Vinay Simha BN <simhavcs@gmail.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Thierry Reding <treding@nvidia.com> Fixes:e839508163
("drm/dsi: Implement set tear scanline") Signed-off-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200505160329.2976059-3-emil.l.velikov@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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6f2b14006d
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835c6f7c0a
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@ -1029,11 +1029,11 @@ EXPORT_SYMBOL(mipi_dsi_dcs_set_pixel_format);
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*/
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*/
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int mipi_dsi_dcs_set_tear_scanline(struct mipi_dsi_device *dsi, u16 scanline)
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int mipi_dsi_dcs_set_tear_scanline(struct mipi_dsi_device *dsi, u16 scanline)
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{
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{
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u8 payload[3] = { MIPI_DCS_SET_TEAR_SCANLINE, scanline >> 8,
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u8 payload[2] = { scanline >> 8, scanline & 0xff };
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scanline & 0xff };
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ssize_t err;
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ssize_t err;
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err = mipi_dsi_generic_write(dsi, payload, sizeof(payload));
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err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_TEAR_SCANLINE, payload,
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sizeof(payload));
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if (err < 0)
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if (err < 0)
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return err;
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return err;
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