| Message ID | 20210416153909.v4.18.I047b8c7c6a3fc60eaca473da7a374f171fb021c2@changeid (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm: Fix EDID reading on ti-sn65dsi86; solve some chicken-and-egg problems | expand |
On Fri 16 Apr 17:39 CDT 2021, Douglas Anderson wrote: > No functional changes--this just makes the diffstat of a future change > easier to understand. > Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Regards, Bjorn > Signed-off-by: Douglas Anderson <dianders@chromium.org> > --- > > (no changes since v1) > > drivers/gpu/drm/bridge/ti-sn65dsi86.c | 116 +++++++++++++------------- > 1 file changed, 58 insertions(+), 58 deletions(-) > > diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c > index a98abf496190..b3c699da7724 100644 > --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c > +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c > @@ -192,6 +192,64 @@ static void ti_sn65dsi86_write_u16(struct ti_sn65dsi86 *pdata, > regmap_write(pdata->regmap, reg + 1, val >> 8); > } > > +static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata) > +{ > + u32 bit_rate_khz, clk_freq_khz; > + struct drm_display_mode *mode = > + &pdata->bridge.encoder->crtc->state->adjusted_mode; > + > + bit_rate_khz = mode->clock * > + mipi_dsi_pixel_format_to_bpp(pdata->dsi->format); > + clk_freq_khz = bit_rate_khz / (pdata->dsi->lanes * 2); > + > + return clk_freq_khz; > +} > + > +/* clk frequencies supported by bridge in Hz in case derived from REFCLK pin */ > +static const u32 ti_sn_bridge_refclk_lut[] = { > + 12000000, > + 19200000, > + 26000000, > + 27000000, > + 38400000, > +}; > + > +/* clk frequencies supported by bridge in Hz in case derived from DACP/N pin */ > +static const u32 ti_sn_bridge_dsiclk_lut[] = { > + 468000000, > + 384000000, > + 416000000, > + 486000000, > + 460800000, > +}; > + > +static void ti_sn_bridge_set_refclk_freq(struct ti_sn65dsi86 *pdata) > +{ > + int i; > + u32 refclk_rate; > + const u32 *refclk_lut; > + size_t refclk_lut_size; > + > + if (pdata->refclk) { > + refclk_rate = clk_get_rate(pdata->refclk); > + refclk_lut = ti_sn_bridge_refclk_lut; > + refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_refclk_lut); > + clk_prepare_enable(pdata->refclk); > + } else { > + refclk_rate = ti_sn_bridge_get_dsi_freq(pdata) * 1000; > + refclk_lut = ti_sn_bridge_dsiclk_lut; > + refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_dsiclk_lut); > + } > + > + /* for i equals to refclk_lut_size means default frequency */ > + for (i = 0; i < refclk_lut_size; i++) > + if (refclk_lut[i] == refclk_rate) > + break; > + > + regmap_update_bits(pdata->regmap, SN_DPPLL_SRC_REG, REFCLK_FREQ_MASK, > + REFCLK_FREQ(i)); > +} > + > static int __maybe_unused ti_sn65dsi86_resume(struct device *dev) > { > struct ti_sn65dsi86 *pdata = dev_get_drvdata(dev); > @@ -459,64 +517,6 @@ static void ti_sn_bridge_disable(struct drm_bridge *bridge) > regmap_write(pdata->regmap, SN_PLL_ENABLE_REG, 0); > } > > -static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata) > -{ > - u32 bit_rate_khz, clk_freq_khz; > - struct drm_display_mode *mode = > - &pdata->bridge.encoder->crtc->state->adjusted_mode; > - > - bit_rate_khz = mode->clock * > - mipi_dsi_pixel_format_to_bpp(pdata->dsi->format); > - clk_freq_khz = bit_rate_khz / (pdata->dsi->lanes * 2); > - > - return clk_freq_khz; > -} > - > -/* clk frequencies supported by bridge in Hz in case derived from REFCLK pin */ > -static const u32 ti_sn_bridge_refclk_lut[] = { > - 12000000, > - 19200000, > - 26000000, > - 27000000, > - 38400000, > -}; > - > -/* clk frequencies supported by bridge in Hz in case derived from DACP/N pin */ > -static const u32 ti_sn_bridge_dsiclk_lut[] = { > - 468000000, > - 384000000, > - 416000000, > - 486000000, > - 460800000, > -}; > - > -static void ti_sn_bridge_set_refclk_freq(struct ti_sn65dsi86 *pdata) > -{ > - int i; > - u32 refclk_rate; > - const u32 *refclk_lut; > - size_t refclk_lut_size; > - > - if (pdata->refclk) { > - refclk_rate = clk_get_rate(pdata->refclk); > - refclk_lut = ti_sn_bridge_refclk_lut; > - refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_refclk_lut); > - clk_prepare_enable(pdata->refclk); > - } else { > - refclk_rate = ti_sn_bridge_get_dsi_freq(pdata) * 1000; > - refclk_lut = ti_sn_bridge_dsiclk_lut; > - refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_dsiclk_lut); > - } > - > - /* for i equals to refclk_lut_size means default frequency */ > - for (i = 0; i < refclk_lut_size; i++) > - if (refclk_lut[i] == refclk_rate) > - break; > - > - regmap_update_bits(pdata->regmap, SN_DPPLL_SRC_REG, REFCLK_FREQ_MASK, > - REFCLK_FREQ(i)); > -} > - > static void ti_sn_bridge_set_dsi_rate(struct ti_sn65dsi86 *pdata) > { > unsigned int bit_rate_mhz, clk_freq_mhz; > -- > 2.31.1.368.gbe11c130af-goog >
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index a98abf496190..b3c699da7724 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -192,6 +192,64 @@ static void ti_sn65dsi86_write_u16(struct ti_sn65dsi86 *pdata, regmap_write(pdata->regmap, reg + 1, val >> 8); } +static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata) +{ + u32 bit_rate_khz, clk_freq_khz; + struct drm_display_mode *mode = + &pdata->bridge.encoder->crtc->state->adjusted_mode; + + bit_rate_khz = mode->clock * + mipi_dsi_pixel_format_to_bpp(pdata->dsi->format); + clk_freq_khz = bit_rate_khz / (pdata->dsi->lanes * 2); + + return clk_freq_khz; +} + +/* clk frequencies supported by bridge in Hz in case derived from REFCLK pin */ +static const u32 ti_sn_bridge_refclk_lut[] = { + 12000000, + 19200000, + 26000000, + 27000000, + 38400000, +}; + +/* clk frequencies supported by bridge in Hz in case derived from DACP/N pin */ +static const u32 ti_sn_bridge_dsiclk_lut[] = { + 468000000, + 384000000, + 416000000, + 486000000, + 460800000, +}; + +static void ti_sn_bridge_set_refclk_freq(struct ti_sn65dsi86 *pdata) +{ + int i; + u32 refclk_rate; + const u32 *refclk_lut; + size_t refclk_lut_size; + + if (pdata->refclk) { + refclk_rate = clk_get_rate(pdata->refclk); + refclk_lut = ti_sn_bridge_refclk_lut; + refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_refclk_lut); + clk_prepare_enable(pdata->refclk); + } else { + refclk_rate = ti_sn_bridge_get_dsi_freq(pdata) * 1000; + refclk_lut = ti_sn_bridge_dsiclk_lut; + refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_dsiclk_lut); + } + + /* for i equals to refclk_lut_size means default frequency */ + for (i = 0; i < refclk_lut_size; i++) + if (refclk_lut[i] == refclk_rate) + break; + + regmap_update_bits(pdata->regmap, SN_DPPLL_SRC_REG, REFCLK_FREQ_MASK, + REFCLK_FREQ(i)); +} + static int __maybe_unused ti_sn65dsi86_resume(struct device *dev) { struct ti_sn65dsi86 *pdata = dev_get_drvdata(dev); @@ -459,64 +517,6 @@ static void ti_sn_bridge_disable(struct drm_bridge *bridge) regmap_write(pdata->regmap, SN_PLL_ENABLE_REG, 0); } -static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata) -{ - u32 bit_rate_khz, clk_freq_khz; - struct drm_display_mode *mode = - &pdata->bridge.encoder->crtc->state->adjusted_mode; - - bit_rate_khz = mode->clock * - mipi_dsi_pixel_format_to_bpp(pdata->dsi->format); - clk_freq_khz = bit_rate_khz / (pdata->dsi->lanes * 2); - - return clk_freq_khz; -} - -/* clk frequencies supported by bridge in Hz in case derived from REFCLK pin */ -static const u32 ti_sn_bridge_refclk_lut[] = { - 12000000, - 19200000, - 26000000, - 27000000, - 38400000, -}; - -/* clk frequencies supported by bridge in Hz in case derived from DACP/N pin */ -static const u32 ti_sn_bridge_dsiclk_lut[] = { - 468000000, - 384000000, - 416000000, - 486000000, - 460800000, -}; - -static void ti_sn_bridge_set_refclk_freq(struct ti_sn65dsi86 *pdata) -{ - int i; - u32 refclk_rate; - const u32 *refclk_lut; - size_t refclk_lut_size; - - if (pdata->refclk) { - refclk_rate = clk_get_rate(pdata->refclk); - refclk_lut = ti_sn_bridge_refclk_lut; - refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_refclk_lut); - clk_prepare_enable(pdata->refclk); - } else { - refclk_rate = ti_sn_bridge_get_dsi_freq(pdata) * 1000; - refclk_lut = ti_sn_bridge_dsiclk_lut; - refclk_lut_size = ARRAY_SIZE(ti_sn_bridge_dsiclk_lut); - } - - /* for i equals to refclk_lut_size means default frequency */ - for (i = 0; i < refclk_lut_size; i++) - if (refclk_lut[i] == refclk_rate) - break; - - regmap_update_bits(pdata->regmap, SN_DPPLL_SRC_REG, REFCLK_FREQ_MASK, - REFCLK_FREQ(i)); -} - static void ti_sn_bridge_set_dsi_rate(struct ti_sn65dsi86 *pdata) { unsigned int bit_rate_mhz, clk_freq_mhz;
No functional changes--this just makes the diffstat of a future change easier to understand. Signed-off-by: Douglas Anderson <dianders@chromium.org> --- (no changes since v1) drivers/gpu/drm/bridge/ti-sn65dsi86.c | 116 +++++++++++++------------- 1 file changed, 58 insertions(+), 58 deletions(-)