Re: [PATCH] drm/i915/edp/jsl: Update vswing table for HBR and HBR2

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I don't think that checkpatch.pl has all the style rules that we follow in drm.
Check the output of "✗ Fi.CI.CHECKPATCH: warning for drm/i915/edp/jsl: Update vswing table for HBR and HBR2 (rev2)" there more style errors than that.

On Mon, 2020-10-19 at 11:08 +0000, Surendrakumar Upadhyay, TejaskumarX wrote:
> Hi Jose,
> 
> I use scripts/checkpatch.pl. And it has reported me following :
> 
> drm-tip# ./scripts/checkpatch.pl 0001-drm-i915-edp-jsl-Update-vswing-table-for-HBR-and-HBR.patch
> WARNING: else is not generally useful after a break or return
> #88: FILE: drivers/gpu/drm/i915/display/intel_ddi.c:1222:
> +                       return jsl_combo_phy_ddi_translations_edp_hbr2;
> +               } else {
> 
> total: 0 errors, 1 warnings, 111 lines checked
> 
> I have got 1 warning, which is because I have tried to maintain same format which is there in other similar functions in intel_ddi.c. If I will change to resolve this warning, everything else also needs similar change as applicable.
> 
> Please let me know how you want me to proceed.
> 
> Thanks,
> Tejas
> 
> > -----Original Message-----
> > From: Souza, Jose <jose.souza@xxxxxxxxx>
> > Sent: 17 October 2020 02:11
> > To: Surendrakumar Upadhyay, TejaskumarX
> > <tejaskumarx.surendrakumar.upadhyay@xxxxxxxxx>; dri-
> > devel@xxxxxxxxxxxxxxxxxxxxx; intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> > Subject: Re: [PATCH] drm/i915/edp/jsl: Update vswing table for HBR and
> > HBR2
> > 
> > Please fix the checkpatch errors, you can run it locally by running "dim
> > checkpatch drm-tip/drm-tip..HEAD", search for instructions of how to fetch
> > and setup dim.
> > 
> > Also no need to CC drm-devel for patches that only touches i915, drm-devel
> > is for drivers that don't have it's own list and for changes in drm subsystem
> > that affects all other drm based drivers.
> > 
> > On Wed, 2020-10-14 at 20:29 +0530, Tejas Upadhyay wrote:
> > > JSL has update in vswing table for eDP.
> > > 
> > > BSpec: 21257
> > > 
> > > Cc: Souza Jose <jose.souza@xxxxxxxxx>
> > > Signed-off-by: Tejas Upadhyay
> > > <tejaskumarx.surendrakumar.upadhyay@xxxxxxxxx>
> > > ---
> > >  drivers/gpu/drm/i915/display/intel_ddi.c | 87
> > > +++++++++++++++++++++++-
> > >  1 file changed, 85 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
> > > b/drivers/gpu/drm/i915/display/intel_ddi.c
> > > index bb0b9930958f..7ab694c6d8df 100644
> > > --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> > > +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> > > @@ -582,6 +582,34 @@ static const struct cnl_ddi_buf_trans
> > ehl_combo_phy_ddi_translations_dp[] = {
> > >  { 0x6, 0x7F, 0x3F, 0x00, 0x00 },/* 900   900      0.0   */
> > >  };
> > > 
> > > 
> > > +static const struct cnl_ddi_buf_trans
> > jsl_combo_phy_ddi_translations_edp_hbr[] = {
> > > +/* NT mV Trans mV db    */
> > > +{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },        /* 200   200      0.0   */
> > > +{ 0x8, 0x7F, 0x38, 0x00, 0x07 },        /* 200   250      1.9   */
> > > +{ 0x1, 0x7F, 0x33, 0x00, 0x0C },        /* 200   300      3.5   */
> > > +{ 0xA, 0x35, 0x36, 0x00, 0x09 },        /* 200   350      4.9   */
> > > +{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },        /* 250   250      0.0   */
> > > +{ 0x1, 0x7F, 0x38, 0x00, 0x07 },        /* 250   300      1.6   */
> > > +{ 0xA, 0x35, 0x35, 0x00, 0x0A },        /* 250   350      2.9   */
> > > +{ 0x1, 0x7F, 0x3F, 0x00, 0x00 },        /* 300   300      0.0   */
> > > +{ 0xA, 0x35, 0x38, 0x00, 0x07 },        /* 300   350      1.3   */
> > > +{ 0xA, 0x35, 0x3F, 0x00, 0x00 },        /* 350   350      0.0   */
> > > +};
> > > +
> > > +static const struct cnl_ddi_buf_trans
> > jsl_combo_phy_ddi_translations_edp_hbr2[] = {
> > > +/* NT mV Trans mV db    */
> > > +{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },        /* 200   200      0.0   */
> > > +{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },        /* 200   250      1.9   */
> > > +{ 0x1, 0x7F, 0x3D, 0x00, 0x02 },        /* 200   300      3.5   */
> > > +{ 0xA, 0x35, 0x38, 0x00, 0x07 },        /* 200   350      4.9   */
> > > +{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },        /* 250   250      0.0   */
> > > +{ 0x1, 0x7F, 0x3F, 0x00, 0x00 },        /* 250   300      1.6   */
> > > +{ 0xA, 0x35, 0x3A, 0x00, 0x05 },        /* 250   350      2.9   */
> > > +{ 0x1, 0x7F, 0x3F, 0x00, 0x00 },        /* 300   300      0.0   */
> > > +{ 0xA, 0x35, 0x38, 0x00, 0x07 },        /* 300   350      1.3   */
> > > +{ 0xA, 0x35, 0x3F, 0x00, 0x00 },        /* 350   350      0.0   */
> > > +};
> > > +
> > >  struct icl_mg_phy_ddi_buf_trans {
> > >  u32 cri_txdeemph_override_11_6;
> > >  u32 cri_txdeemph_override_5_0;
> > > @@ -1162,6 +1190,57 @@ ehl_get_combo_buf_trans(struct intel_encoder
> > > *encoder,  return ehl_get_combo_buf_trans_dp(encoder, crtc_state,
> > > n_entries);  }
> > > 
> > > 
> > > +static const struct cnl_ddi_buf_trans *
> > > +jsl_get_combo_buf_trans_hdmi(struct intel_encoder *encoder,
> > > +    const struct intel_crtc_state *crtc_state,
> > > +    int *n_entries)
> > > +{
> > > +*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_hdmi);
> > > +return icl_combo_phy_ddi_translations_hdmi;
> > > +}
> > > +
> > > +static const struct cnl_ddi_buf_trans *
> > > +jsl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
> > > +  const struct intel_crtc_state *crtc_state,
> > > +  int *n_entries)
> > > +{
> > > +*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_dp_hbr2);
> > > +return icl_combo_phy_ddi_translations_dp_hbr2;
> > > +}
> > > +
> > > +static const struct cnl_ddi_buf_trans *
> > > +jsl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
> > > +   const struct intel_crtc_state *crtc_state,
> > > +   int *n_entries)
> > > +{
> > > +struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> > > +
> > > +if (dev_priv->vbt.edp.low_vswing) {
> > > +if (crtc_state->port_clock > 270000) { *n_entries =
> > > +ARRAY_SIZE(jsl_combo_phy_ddi_translations_edp_hbr2);
> > > +return jsl_combo_phy_ddi_translations_edp_hbr2;
> > > +} else {
> > > +*n_entries = ARRAY_SIZE(jsl_combo_phy_ddi_translations_edp_hbr);
> > > +return jsl_combo_phy_ddi_translations_edp_hbr;
> > > +}
> > > +}
> > > +
> > > +return jsl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries); }
> > > +
> > > +static const struct cnl_ddi_buf_trans *
> > > +jsl_get_combo_buf_trans(struct intel_encoder *encoder,
> > > +       const struct intel_crtc_state *crtc_state,
> > > +       int *n_entries)
> > > +{
> > > +if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) return
> > > +jsl_get_combo_buf_trans_hdmi(encoder, crtc_state, n_entries); else if
> > > +(intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) return
> > > +jsl_get_combo_buf_trans_edp(encoder, crtc_state, n_entries); else
> > > +return jsl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries); }
> > > +
> > >  static const struct cnl_ddi_buf_trans *
> > > tgl_get_combo_buf_trans_hdmi(struct intel_encoder *encoder,
> > >       const struct intel_crtc_state *crtc_state, @@ -2363,7 +2442,9 @@
> > > static u8 intel_ddi_dp_voltage_max(struct intel_dp *intel_dp,  else
> > > tgl_get_dkl_buf_trans(encoder, crtc_state, &n_entries);  } else if
> > > (INTEL_GEN(dev_priv) == 11) { -if (IS_JSL_EHL(dev_priv))
> > > +if (IS_PLATFORM(dev_priv, INTEL_JASPERLAKE))
> > > +jsl_get_combo_buf_trans(encoder, crtc_state, &n_entries); else if
> > > +(IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE))
> > >  ehl_get_combo_buf_trans(encoder, crtc_state, &n_entries);  else if
> > > (intel_phy_is_combo(dev_priv, phy))  icl_get_combo_buf_trans(encoder,
> > > crtc_state, &n_entries); @@ -2544,7 +2625,9 @@ static void
> > > icl_ddi_combo_vswing_program(struct intel_encoder *encoder,
> > > 
> > > 
> > >  if (INTEL_GEN(dev_priv) >= 12)
> > >  ddi_translations = tgl_get_combo_buf_trans(encoder, crtc_state,
> > > &n_entries); -else if (IS_JSL_EHL(dev_priv))
> > > +else if (IS_PLATFORM(dev_priv, INTEL_JASPERLAKE)) ddi_translations =
> > > +jsl_get_combo_buf_trans(encoder, crtc_state, &n_entries); else if
> > > +(IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE))
> > >  ddi_translations = ehl_get_combo_buf_trans(encoder, crtc_state,
> > > &n_entries);  else  ddi_translations =
> > > icl_get_combo_buf_trans(encoder, crtc_state, &n_entries);
> > 
> 

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