> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Mika
> Kahola
> Sent: Thursday, April 20, 2023 6:11 PM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject: [PATCH 03/13] drm/i915/mtl: Dump C20 pll hw state
>
> As we already do with C10 chip, let's dump the pll hw state for C20 as well.
>
> Signed-off-by: Mika Kahola <mika.kahola@xxxxxxxxx>
> ---
Reviewed-by: Arun R Murthy <arun.r.murthy@xxxxxxxxx>
Thanks and Regards,
Arun R Murthy
--------------------
> drivers/gpu/drm/i915/display/intel_cx0_phy.c | 20 ++++++++++++++++++++
> drivers/gpu/drm/i915/display/intel_cx0_phy.h | 2 ++
> drivers/gpu/drm/i915/display/intel_ddi.c | 1 +
> 3 files changed, 23 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> index 61428c5145e5..144474540ef4 100644
> --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
> @@ -2035,6 +2035,26 @@ void intel_c20pll_readout_hw_state(struct
> intel_encoder *encoder,
> }
> }
>
> +void intel_c20pll_dump_hw_state(struct drm_i915_private *i915,
> + const struct intel_c20pll_state *hw_state) {
> + int i;
> +
> + drm_dbg_kms(&i915->drm, "c20pll_hw_state:\n");
> + drm_dbg_kms(&i915->drm, "tx[0] = 0x%.4x, tx[1] = 0x%.4x, tx[2] =
> 0x%.4x\n",
> + hw_state->tx[0], hw_state->tx[1], hw_state->tx[2]);
> + drm_dbg_kms(&i915->drm, "cmn[0] = 0x%.4x, cmn[1] = 0x%.4x,
> cmn[2] = 0x%.4x, cmn[3] = 0x%.4x\n",
> + hw_state->cmn[0], hw_state->cmn[1], hw_state->cmn[2],
> +hw_state->cmn[3]);
> +
> + if (intel_c20_use_mplla(hw_state->clock)) {
> + for (i = 0; i < ARRAY_SIZE(hw_state->mplla); i++)
> + drm_dbg_kms(&i915->drm, "mplla[%d] = 0x%.4x\n",
> i, hw_state->mplla[i]);
> + } else {
> + for (i = 0; i < ARRAY_SIZE(hw_state->mpllb); i++)
> + drm_dbg_kms(&i915->drm, "mpllb[%d] = 0x%.4x\n",
> i, hw_state->mpllb[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 9760c6292c81..c643aae27bac 100644
> --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.h
> +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.h
> @@ -32,6 +32,8 @@ 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_c20pll_dump_hw_state(struct drm_i915_private *i915,
> + const struct intel_c20pll_state *hw_state);
> void intel_cx0_phy_set_signal_levels(struct intel_encoder *encoder,
> const struct intel_crtc_state *crtc_state);
> int intel_cx0_phy_check_hdmi_link_rate(struct intel_hdmi *hdmi, int clock);
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
> b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 44f07011245b..d414dd8c26bf 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -3858,6 +3858,7 @@ static void mtl_ddi_get_config(struct intel_encoder
> *encoder,
> intel_c10pll_dump_hw_state(i915, &crtc_state-
> >cx0pll_state.c10);
> } else {
> intel_c20pll_readout_hw_state(encoder, &crtc_state-
> >cx0pll_state.c20);
> + intel_c20pll_dump_hw_state(i915, &crtc_state-
> >cx0pll_state.c20);
> }
>
> crtc_state->port_clock = intel_c10pll_calc_port_clock(encoder,
> &crtc_state->cx0pll_state.c10);
> --
> 2.34.1
