Re: [PATCH 02/13] drm/i915/mtl: C20 HW readout

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On Thu, Apr 20, 2023 at 03:40:39PM +0300, Mika Kahola wrote:
> 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 */
This should be 0x4b9a ^ for mpllb cfg4 according to the consolidated table.

> +		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 */
This should be 0x4b9a ^ for mpllb cfg4 according to the consolidated table.

> +		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 */
This should be 0x8c00 ^ for mplla cfg4 according to the consolidated table.

> +		0x8c00,		/* mplla cfg5 */
This should be 0x759a ^ for mplla cfg5 according to the consolidated table.

> +		0x4000,		/* mplla cfg6 */
> +		0x0003,		/* mplla cfg7 */
> +		0x3555,		/* mplla cfg8 */
> +		0x0000,		/* mplla cfg9 */
This should be 0x0001 ^ for mplla cfg9 according to the consolidated table.

> +		},
> +};
> +
> +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 */
This should be 0x0001 ^ for mplla cfg9 according to the consolidated table.

These are the suggested changes for now. I would need to check the HDMI tables.

- Radhakrishna(RK) Sripada
> +		},
> +};
> +
> +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) {
> +		/* 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 */
> +		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
> 



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