> -----Original Message-----
> From: Murthy, Arun R <arun.r.murthy@xxxxxxxxx>
> Sent: Thursday, April 27, 2023 6:31 AM
> To: Kahola, Mika <mika.kahola@xxxxxxxxx>; intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Nautiyal, Ankit K <ankit.k.nautiyal@xxxxxxxxx>
> Subject: RE: [PATCH 02/13] drm/i915/mtl: C20 HW readout
>
> > -----Original Message-----
> > From: Kahola, Mika <mika.kahola@xxxxxxxxx>
> > Sent: Thursday, April 20, 2023 6:11 PM
> > To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> > Cc: Kahola, Mika <mika.kahola@xxxxxxxxx>; Murthy, Arun R
> > <arun.r.murthy@xxxxxxxxx>; Nautiyal, Ankit K
> > <ankit.k.nautiyal@xxxxxxxxx>
> > Subject: [PATCH 02/13] drm/i915/mtl: C20 HW readout
> >
> > Create a table for C20 DP1.4, DP2.0 and HDMI2.1 rates.
> > The PLL settings are based on table, not for algorithmic alternative.
> > For DP 1.4 only MPLLB is in use.
> >
> > Once register settings are done, we read back C20 HW state.
> >
> > BSpec: 64568
> >
> > Signed-off-by: Mika Kahola <mika.kahola@xxxxxxxxx>
> > Signed-off-by: Arun R Murthy <arun.r.murthy@xxxxxxxxx>
> > Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/display/intel_cx0_phy.c | 623 +++++++++++++++++-
> > drivers/gpu/drm/i915/display/intel_cx0_phy.h | 8 +-
> > drivers/gpu/drm/i915/display/intel_ddi.c | 9 +-
> > .../drm/i915/display/intel_display_types.h | 1 +
> > drivers/gpu/drm/i915/display/intel_hdmi.c | 6 +-
> > drivers/gpu/drm/i915/display/intel_hdmi.h | 1 +
> > 6 files changed, 628 insertions(+), 20 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> > b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> > index dd96bf5e179e..61428c5145e5 100644
> > --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> > +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> > @@ -11,6 +11,7 @@
> > #include "intel_de.h"
> > #include "intel_display_types.h"
> > #include "intel_dp.h"
> > +#include "intel_hdmi.h"
> > #include "intel_panel.h"
> > #include "intel_psr.h"
> > #include "intel_tc.h"
> > @@ -285,6 +286,23 @@ static void intel_c20_sram_write(struct
> > drm_i915_private *i915, enum port port,
> > intel_cx0_write(i915, port, lane, PHY_C20_WR_DATA_L, data & 0xff,
> > 1); }
> >
> > +static u16 intel_c20_sram_read(struct drm_i915_private *i915, enum
> > +port
> > port,
> > + int lane, u16 addr)
> > +{
> > + u16 val;
> > +
> > + assert_dc_off(i915);
> > +
> > + intel_cx0_write(i915, port, lane, PHY_C20_RD_ADDRESS_H, addr >>
> > 8, 0);
> > + intel_cx0_write(i915, port, lane, PHY_C20_RD_ADDRESS_L, addr &
> > 0xff,
> > +1);
> > +
> > + val = intel_cx0_read(i915, port, lane, PHY_C20_RD_DATA_H);
> > + val <<= 8;
> > + val |= intel_cx0_read(i915, port, lane, PHY_C20_RD_DATA_L);
> > +
> > + return val;
> > +}
> > +
> > static void __intel_cx0_rmw(struct drm_i915_private *i915, enum port port,
> > int lane, u16 addr, u8 clear, u8 set, bool
> > committed) { @@ -659,6 +677,199 @@ static const struct
> > intel_c10pll_state
> > * const mtl_c10_edp_tables[] = {
> > NULL,
> > };
> >
> > +/* C20 basic DP 1.4 tables */
> > +static const struct intel_c20pll_state mtl_c20_dp_rbr = {
> > + .link_bit_rate = 162000,
> > + .clock = 162000,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x5800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = {0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x50a8, /* mpllb cfg0 */
> > + 0x2120, /* mpllb cfg1 */
> > + 0xcd9a, /* mpllb cfg2 */
> > + 0xbfc1, /* mpllb cfg3 */
> > + 0x5ab8, /* mpllb cfg4 */
> > + 0x4c34, /* mpllb cfg5 */
> > + 0x2000, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x6000, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0000, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_dp_hbr1 = {
> > + .link_bit_rate = 270000,
> > + .clock = 270000,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x4800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = {0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x308c, /* mpllb cfg0 */
> > + 0x2110, /* mpllb cfg1 */
> > + 0xcc9c, /* mpllb cfg2 */
> > + 0xbfc1, /* mpllb cfg3 */
> > + 0x489a, /* mpllb cfg4 */
> > + 0x3f81, /* mpllb cfg5 */
> > + 0x2000, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x5000, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0000, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_dp_hbr2 = {
> > + .link_bit_rate = 540000,
> > + .clock = 540000,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x4800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = {0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x108c, /* mpllb cfg0 */
> > + 0x2108, /* mpllb cfg1 */
> > + 0xcc9c, /* mpllb cfg2 */
> > + 0xbfc1, /* mpllb cfg3 */
> > + 0x489a, /* mpllb cfg4 */
> > + 0x3f81, /* mpllb cfg5 */
> > + 0x2000, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x5000, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0000, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_dp_hbr3 = {
> > + .link_bit_rate = 810000,
> > + .clock = 810000,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x4800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = {0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x10d2, /* mpllb cfg0 */
> > + 0x2108, /* mpllb cfg1 */
> > + 0x8d98, /* mpllb cfg2 */
> > + 0xbfc1, /* mpllb cfg3 */
> > + 0x7166, /* mpllb cfg4 */
> > + 0x5f42, /* mpllb cfg5 */
> > + 0x2000, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x7800, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0000, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +/* C20 basic DP 2.0 tables */
> > +static const struct intel_c20pll_state mtl_c20_dp_uhbr10 = {
> > + .link_bit_rate = 1000000, /* 10 Gbps */
> > + .clock = 312500,
> > + .tx = { 0xbe21, /* tx cfg0 */
> > + 0x4800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = {0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mplla = { 0x3104, /* mplla cfg0 */
> > + 0xd105, /* mplla cfg1 */
> > + 0xc025, /* mplla cfg2 */
> > + 0xc025, /* mplla cfg3 */
> > + 0xa6ab, /* mplla cfg4 */
> > + 0x8c00, /* mplla cfg5 */
> > + 0x4000, /* mplla cfg6 */
> > + 0x0003, /* mplla cfg7 */
> > + 0x3555, /* mplla cfg8 */
> > + 0x0000, /* mplla cfg9 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_dp_uhbr13_5 = {
> > + .link_bit_rate = 1350000, /* 13.5 Gbps */
> > + .clock = 421875,
> > + .tx = { 0xbea0, /* tx cfg0 */
> > + 0x4800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = {0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x015f, /* mpllb cfg0 */
> > + 0x2205, /* mpllb cfg1 */
> > + 0x1b17, /* mpllb cfg2 */
> > + 0xffc1, /* mpllb cfg3 */
> > + 0xe100, /* mpllb cfg4 */
> > + 0xbd00, /* mpllb cfg5 */
> > + 0x2000, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x4800, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0000, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_dp_uhbr20 = {
> > + .link_bit_rate = 2000000, /* 20 Gbps */
> > + .clock = 625000,
> > + .tx = { 0xbe20, /* tx cfg0 */
> > + 0x4800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = {0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mplla = { 0x3104, /* mplla cfg0 */
> > + 0xd105, /* mplla cfg1 */
> > + 0xc025, /* mplla cfg2 */
> > + 0xc025, /* mplla cfg3 */
> > + 0xa6ab, /* mplla cfg4 */
> > + 0x8c00, /* mplla cfg5 */
> > + 0x4000, /* mplla cfg6 */
> > + 0x0003, /* mplla cfg7 */
> > + 0x3555, /* mplla cfg8 */
> > + 0x0002, /* mplla cfg9 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state * const mtl_c20_dp_tables[] = {
> > + &mtl_c20_dp_rbr,
> > + &mtl_c20_dp_hbr1,
> > + &mtl_c20_dp_hbr2,
> > + &mtl_c20_dp_hbr3,
> > + &mtl_c20_dp_uhbr10,
> > + &mtl_c20_dp_uhbr13_5,
> > + &mtl_c20_dp_uhbr20,
> > + NULL,
> > +};
> > +
> > /*
> > * HDMI link rates with 38.4 MHz reference clock.
> > */
> > @@ -1243,7 +1454,281 @@ static const struct intel_c10pll_state * const
> > mtl_c10_hdmi_tables[] = {
> > NULL,
> > };
> >
> > -int intel_c10_phy_check_hdmi_link_rate(int clock)
> > +static const struct intel_c20pll_state mtl_c20_hdmi_25_175 = {
> > + .link_bit_rate = 25175,
> > + .clock = 25175,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0xa0d2, /* mpllb cfg0 */
> > + 0x7d80, /* mpllb cfg1 */
> > + 0x0906, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x0200, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x0000, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0001, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_27_0 = {
> > + .link_bit_rate = 27000,
> > + .clock = 27000,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0xa0e0, /* mpllb cfg0 */
> > + 0x7d80, /* mpllb cfg1 */
> > + 0x0906, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x8000, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0001, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_74_25 = {
> > + .link_bit_rate = 74250,
> > + .clock = 74250,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x609a, /* mpllb cfg0 */
> > + 0x7d40, /* mpllb cfg1 */
> > + 0xca06, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x5800, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0001, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_148_5 = {
> > + .link_bit_rate = 148500,
> > + .clock = 148500,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x409a, /* mpllb cfg0 */
> > + 0x7d20, /* mpllb cfg1 */
> > + 0xca06, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x5800, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0001, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_594 = {
> > + .link_bit_rate = 594000,
> > + .clock = 594000,
> > + .tx = { 0xbe88, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x009a, /* mpllb cfg0 */
> > + 0x7d08, /* mpllb cfg1 */
> > + 0xca06, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x5800, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0001, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_300 = {
> > + .link_bit_rate = 3000000,
> > + .clock = 166670,
> > + .tx = { 0xbe98, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x209c, /* mpllb cfg0 */
> > + 0x7d10, /* mpllb cfg1 */
> > + 0xca06, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x2000, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0004, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_600 = {
> > + .link_bit_rate = 6000000,
> > + .clock = 333330,
> > + .tx = { 0xbe98, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x009c, /* mpllb cfg0 */
> > + 0x7d08, /* mpllb cfg1 */
> > + 0xca06, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x2000, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0004, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_800 = {
> > + .link_bit_rate = 8000000,
> > + .clock = 444440,
> > + .tx = { 0xbe98, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x00d0, /* mpllb cfg0 */
> > + 0x7d08, /* mpllb cfg1 */
> > + 0x4a06, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0003, /* mpllb cfg7 */
> > + 0x2aaa, /* mpllb cfg8 */
> > + 0x0002, /* mpllb cfg9 */
> > + 0x0004, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_1000 = {
> > + .link_bit_rate = 10000000,
> > + .clock = 555560,
> > + .tx = { 0xbe98, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x1104, /* mpllb cfg0 */
> > + 0x7d08, /* mpllb cfg1 */
> > + 0x0a06, /* mpllb cfg2 */
> > + 0xbe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0003, /* mpllb cfg7 */
> > + 0x3555, /* mpllb cfg8 */
> > + 0x0001, /* mpllb cfg9 */
> > + 0x0004, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state mtl_c20_hdmi_1200 = {
> > + .link_bit_rate = 12000000,
> > + .clock = 666670,
> > + .tx = { 0xbe98, /* tx cfg0 */
> > + 0x9800, /* tx cfg1 */
> > + 0x0000, /* tx cfg2 */
> > + },
> > + .cmn = { 0x0500, /* cmn cfg0*/
> > + 0x0005, /* cmn cfg1 */
> > + 0x0000, /* cmn cfg2 */
> > + 0x0000, /* cmn cfg3 */
> > + },
> > + .mpllb = { 0x0138, /* mpllb cfg0 */
> > + 0x7d08, /* mpllb cfg1 */
> > + 0x5486, /* mpllb cfg2 */
> > + 0xfe40, /* mpllb cfg3 */
> > + 0x0000, /* mpllb cfg4 */
> > + 0x0000, /* mpllb cfg5 */
> > + 0x2200, /* mpllb cfg6 */
> > + 0x0001, /* mpllb cfg7 */
> > + 0x4000, /* mpllb cfg8 */
> > + 0x0000, /* mpllb cfg9 */
> > + 0x0004, /* mpllb cfg10 */
> > + },
> > +};
> > +
> > +static const struct intel_c20pll_state * const mtl_c20_hdmi_tables[] = {
> > + &mtl_c20_hdmi_25_175,
> > + &mtl_c20_hdmi_27_0,
> > + &mtl_c20_hdmi_74_25,
> > + &mtl_c20_hdmi_148_5,
> > + &mtl_c20_hdmi_594,
> > + &mtl_c20_hdmi_300,
> > + &mtl_c20_hdmi_600,
> > + &mtl_c20_hdmi_800,
> > + &mtl_c20_hdmi_1000,
> > + &mtl_c20_hdmi_1200,
> > + NULL,
> > +};
> > +
> > +static int intel_c10_phy_check_hdmi_link_rate(int clock)
> > {
> > const struct intel_c10pll_state * const *tables =
> > mtl_c10_hdmi_tables;
> > int i;
> > @@ -1319,17 +1804,6 @@ static int intel_c10pll_calc_state(struct
> > intel_crtc_state *crtc_state,
> > return -EINVAL;
> > }
> >
> > -int intel_cx0pll_calc_state(struct intel_crtc_state *crtc_state,
> > - struct intel_encoder *encoder)
> > -{
> > - struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> > - enum phy phy = intel_port_to_phy(i915, encoder->port);
> > -
> > - drm_WARN_ON(&i915->drm, !intel_is_c10phy(i915, phy));
> > -
> > - return intel_c10pll_calc_state(crtc_state, encoder);
> > -}
> > -
> > void intel_c10pll_readout_hw_state(struct intel_encoder *encoder,
> > struct intel_c10pll_state *pll_state) { @@ -
> > 1427,6 +1901,74 @@ void intel_c10pll_dump_hw_state(struct
> > drm_i915_private *i915,
> > i + 2, hw_state->pll[i + 2], i + 3, hw_state->pll[i + 3]);
> }
> >
> > +static int intel_c20_phy_check_hdmi_link_rate(int clock) {
> > + const struct intel_c20pll_state * const *tables =
> > mtl_c20_hdmi_tables;
> > + int i;
> > +
> > + for (i = 0; tables[i]; i++) {
> > + if (clock == tables[i]->link_bit_rate)
> > + return MODE_OK;
> > + }
> > +
> > + return MODE_CLOCK_RANGE;
> > +}
> > +
> > +int intel_cx0_phy_check_hdmi_link_rate(struct intel_hdmi *hdmi, int
> > +clock) {
> > + struct intel_digital_port *dig_port = hdmi_to_dig_port(hdmi);
> > + struct drm_i915_private *i915 = intel_hdmi_to_i915(hdmi);
> > + enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
> > +
> > + if (intel_is_c10phy(i915, phy))
> > + return intel_c10_phy_check_hdmi_link_rate(clock);
> > + return intel_c20_phy_check_hdmi_link_rate(clock);
> > +}
> > +
> > +static const struct intel_c20pll_state * const *
> > +intel_c20_pll_tables_get(struct intel_crtc_state *crtc_state,
> > + struct intel_encoder *encoder)
> > +{
> > + if (intel_crtc_has_dp_encoder(crtc_state))
> > + return mtl_c20_dp_tables;
> > + else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
> > + return mtl_c20_hdmi_tables;
> > +
> > + MISSING_CASE(encoder->type);
> > + return NULL;
> > +}
> > +
> > +static int intel_c20pll_calc_state(struct intel_crtc_state *crtc_state,
> > + struct intel_encoder *encoder) {
> > + const struct intel_c20pll_state * const *tables;
> > + int i;
> > +
> > + tables = intel_c20_pll_tables_get(crtc_state, encoder);
> > + if (!tables)
> > + return -EINVAL;
> > +
> > + for (i = 0; tables[i]; i++) {
> > + if (crtc_state->port_clock == tables[i]->link_bit_rate) {
> > + crtc_state->cx0pll_state.c20 = *tables[i];
> > + return 0;
> > + }
> > + }
> > +
> > + return -EINVAL;
> > +}
> > +
> > +int intel_cx0pll_calc_state(struct intel_crtc_state *crtc_state,
> > + struct intel_encoder *encoder)
> > +{
> > + struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> > + enum phy phy = intel_port_to_phy(i915, encoder->port);
> > +
> > + if (intel_is_c10phy(i915, phy))
> > + return intel_c10pll_calc_state(crtc_state, encoder);
> > + return intel_c20pll_calc_state(crtc_state, encoder); }
> > +
> > static bool intel_c20_use_mplla(u32 clock) {
> > /* 10G and 20G rates use MPLLA */
> > @@ -1436,6 +1978,63 @@ static bool intel_c20_use_mplla(u32 clock)
> > return false;
> > }
> >
> > +void intel_c20pll_readout_hw_state(struct intel_encoder *encoder,
> > + struct intel_c20pll_state *pll_state) {
> > + struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> > + bool cntx, use_mpllb;
> > + u32 val;
> > + int i;
> > +
> > + /* 1. Read current context selection */
> > + cntx = intel_cx0_read(i915, encoder->port, INTEL_CX0_LANE0,
> > +PHY_C20_VDR_CUSTOM_SERDES_RATE) & PHY_C20_CONTEXT_TOGGLE;
> > +
> > + /* Read Tx configuration */
> > + for (i = 0; i < ARRAY_SIZE(pll_state->tx); i++) {
> > + if (cntx)
> > + pll_state->tx[i] = intel_c20_sram_read(i915, encoder-
> > >port, INTEL_CX0_LANE0,
> > +
> > PHY_C20_B_TX_CNTX_CFG(i));
> > + else
> > + pll_state->tx[i] = intel_c20_sram_read(i915, encoder-
> > >port, INTEL_CX0_LANE0,
> > +
> > PHY_C20_A_TX_CNTX_CFG(i));
> > + }
> > +
> > + /* Read common configuration */
> > + for (i = 0; i < ARRAY_SIZE(pll_state->cmn); i++) {
> > + if (cntx)
> > + pll_state->cmn[i] = intel_c20_sram_read(i915,
> > encoder->port, INTEL_CX0_LANE0,
> > +
> > PHY_C20_B_CMN_CNTX_CFG(i));
> > + else
> > + pll_state->cmn[i] = intel_c20_sram_read(i915,
> > encoder->port, INTEL_CX0_LANE0,
> > +
> > PHY_C20_A_CMN_CNTX_CFG(i));
> > + }
> > +
> > + val = intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
> > PHY_C20_A_MPLLA_CNTX_CFG(6));
> > + use_mpllb = val & C20_MPLLB_FRACEN;
> > +
> > + if (use_mpllb) {
>
> If mpllb is in use why is it that the data read is copied to mplla of pll_state?
> I assume that the change is for only context!
This should state use_mplla. This is a typo from the change that wasn't useful. Good catch, thanks!
I also noticed that we cannot use mplla_fracen as differentiator between mplla and mpllb. These both has fracen enabled. I was thinking that in this case the differentiator could be mpllx_fracn_quot i.e. tx[8]. For both 10G and 20G rates the franc_quot is 0x3555 which is not used for any other rate.
-Mika-
>
> > + /* MPLLA configuration */
> > + for (i = 0; i < ARRAY_SIZE(pll_state->mplla); i++) {
> > + if (cntx)
> > + pll_state->mplla[i] =
> > intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
> > +
> > PHY_C20_B_MPLLA_CNTX_CFG(i));
> > + else
> > + pll_state->mplla[i] =
> > intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
> > +
> > PHY_C20_A_MPLLA_CNTX_CFG(i));
> > + }
> > + } else {
> > + /* MPLLB configuration */
>
>
> Same here, should this be mplla?
>
> Thanks and Regards,
> Arun R Murthy
> --------------------
>
> > + for (i = 0; i < ARRAY_SIZE(pll_state->mpllb); i++) {
> > + if (cntx)
> > + pll_state->mpllb[i] =
> > intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
> > +
> > PHY_C20_B_MPLLB_CNTX_CFG(i));
> > + else
> > + pll_state->mpllb[i] =
> > intel_c20_sram_read(i915, encoder->port, INTEL_CX0_LANE0,
> > +
> > PHY_C20_A_MPLLB_CNTX_CFG(i));
> > + }
> > + }
> > +}
> > +
> > static u8 intel_c20_get_dp_rate(u32 clock) {
> > switch (clock) {
> > diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.h
> > b/drivers/gpu/drm/i915/display/intel_cx0_phy.h
> > index 509d1d12776e..9760c6292c81 100644
> > --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.h
> > +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.h
> > @@ -30,8 +30,12 @@ int intel_c10pll_calc_port_clock(struct
> > intel_encoder *encoder,
> > const struct intel_c10pll_state *pll_state); void
> > intel_c10pll_state_verify(struct intel_atomic_state *state,
> > struct intel_crtc_state *new_crtc_state);
> > +void intel_c20pll_readout_hw_state(struct intel_encoder *encoder,
> > + struct intel_c20pll_state *pll_state);
> > void intel_cx0_phy_set_signal_levels(struct intel_encoder *encoder,
> > const struct intel_crtc_state *crtc_state); -
> int
> > intel_c10_phy_check_hdmi_link_rate(int clock);
> > -
> > +int intel_cx0_phy_check_hdmi_link_rate(struct intel_hdmi *hdmi, int
> > +clock); void intel_cx0_phy_ddi_vswing_sequence(struct intel_encoder
> > *encoder,
> > + const struct intel_crtc_state *crtc_state,
> > + u32 level);
> > #endif /* __INTEL_CX0_PHY_H__ */
> > diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
> > b/drivers/gpu/drm/i915/display/intel_ddi.c
> > index f445f2613adb..44f07011245b 100644
> > --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> > @@ -3853,10 +3853,13 @@ static void mtl_ddi_get_config(struct
> > intel_encoder *encoder,
> > struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> > enum phy phy = intel_port_to_phy(i915, encoder->port);
> >
> > - drm_WARN_ON(&i915->drm, !intel_is_c10phy(i915, phy));
> > + if (intel_is_c10phy(i915, phy)) {
> > + intel_c10pll_readout_hw_state(encoder, &crtc_state-
> > >cx0pll_state.c10);
> > + intel_c10pll_dump_hw_state(i915, &crtc_state-
> > >cx0pll_state.c10);
> > + } else {
> > + intel_c20pll_readout_hw_state(encoder, &crtc_state-
> > >cx0pll_state.c20);
> > + }
> >
> > - intel_c10pll_readout_hw_state(encoder, &crtc_state-
> > >cx0pll_state.c10);
> > - intel_c10pll_dump_hw_state(i915, &crtc_state->cx0pll_state.c10);
> > crtc_state->port_clock = intel_c10pll_calc_port_clock(encoder,
> > &crtc_state->cx0pll_state.c10);
> >
> > intel_ddi_get_config(encoder, crtc_state); diff --git
> > a/drivers/gpu/drm/i915/display/intel_display_types.h
> > b/drivers/gpu/drm/i915/display/intel_display_types.h
> > index c9927e12b95e..4eadf45c0a43 100644
> > --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> > +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> > @@ -997,6 +997,7 @@ struct intel_c10pll_state { };
> >
> > struct intel_c20pll_state {
> > + u32 link_bit_rate;
> > u32 clock; /* in kHz */
> > u16 tx[3];
> > u16 cmn[4];
> > diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
> > b/drivers/gpu/drm/i915/display/intel_hdmi.c
> > index 8141d5184856..65a258507d62 100644
> > --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> > +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> > @@ -58,7 +58,7 @@
> > #include "intel_panel.h"
> > #include "intel_snps_phy.h"
> >
> > -static struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi
> > *intel_hdmi)
> > +inline struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi
> > +*intel_hdmi)
> > {
> > return to_i915(hdmi_to_dig_port(intel_hdmi)->base.base.dev);
> > }
> > @@ -1865,8 +1865,8 @@ hdmi_port_clock_valid(struct intel_hdmi *hdmi,
> > * FIXME: We will hopefully get an algorithmic way of programming
> > * the MPLLB for HDMI in the future.
> > */
> > - if (IS_METEORLAKE(dev_priv))
> > - return intel_c10_phy_check_hdmi_link_rate(clock);
> > + if (DISPLAY_VER(dev_priv) >= 14)
> > + return intel_cx0_phy_check_hdmi_link_rate(hdmi, clock);
> > else if (IS_DG2(dev_priv))
> > return intel_snps_phy_check_hdmi_link_rate(clock);
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.h
> > b/drivers/gpu/drm/i915/display/intel_hdmi.h
> > index 774dda2376ed..492bd3921385 100644
> > --- a/drivers/gpu/drm/i915/display/intel_hdmi.h
> > +++ b/drivers/gpu/drm/i915/display/intel_hdmi.h
> > @@ -54,5 +54,6 @@ int intel_hdmi_dsc_get_num_slices(const struct
> > intel_crtc_state *crtc_state,
> > int src_max_slices, int src_max_slice_width,
> > int hdmi_max_slices, int hdmi_throughput); int
> > intel_hdmi_dsc_get_slice_height(int vactive);
> > +struct drm_i915_private *intel_hdmi_to_i915(struct intel_hdmi
> > +*intel_hdmi);
> >
> > #endif /* __INTEL_HDMI_H__ */
> > --
> > 2.34.1
