On Mon, Nov 13, 2023 at 06:47:09PM +0200, Jani Nikula wrote:
> Add a helper with better typing and handing for bogus input, and better
> in line with vlv_dig_port_to_channel(), vlv_dig_port_to_phy(), and
> vlv_pipe_to_channel().
>
> Signed-off-by: Jani Nikula <jani.nik...@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_dpio_phy.c | 14 ++++++++++++++
> drivers/gpu/drm/i915/display/intel_dpio_phy.h | 5 +++++
> drivers/gpu/drm/i915/display/intel_pps.c | 2 +-
> drivers/gpu/drm/i915/i915_reg.h | 2 --
> drivers/gpu/drm/i915/vlv_sideband.c | 6 ++++--
> 5 files changed, 24 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dpio_phy.c
> b/drivers/gpu/drm/i915/display/intel_dpio_phy.c
> index 62b93d097e44..d6af46e33424 100644
> --- a/drivers/gpu/drm/i915/display/intel_dpio_phy.c
> +++ b/drivers/gpu/drm/i915/display/intel_dpio_phy.c
> @@ -666,6 +666,20 @@ enum dpio_phy vlv_dig_port_to_phy(struct
> intel_digital_port *dig_port)
> }
> }
>
> +enum dpio_phy vlv_pipe_to_phy(enum pipe pipe)
> +{
> + switch (pipe) {
> + default:
> + MISSING_CASE(pipe);
> + fallthrough;
> + case PIPE_A:
> + case PIPE_B:
> + return DPIO_PHY0;
> + case PIPE_C:
> + return DPIO_PHY1;
> + }
> +}
> +
> enum dpio_channel vlv_pipe_to_channel(enum pipe pipe)
> {
> switch (pipe) {
> diff --git a/drivers/gpu/drm/i915/display/intel_dpio_phy.h
> b/drivers/gpu/drm/i915/display/intel_dpio_phy.h
> index 4d43dbbdf81c..9adc4e8c1738 100644
> --- a/drivers/gpu/drm/i915/display/intel_dpio_phy.h
> +++ b/drivers/gpu/drm/i915/display/intel_dpio_phy.h
> @@ -44,6 +44,7 @@ u8 bxt_ddi_phy_get_lane_lat_optim_mask(struct intel_encoder
> *encoder);
>
> enum dpio_channel vlv_dig_port_to_channel(struct intel_digital_port
> *dig_port);
> enum dpio_phy vlv_dig_port_to_phy(struct intel_digital_port *dig_port);
> +enum dpio_phy vlv_pipe_to_phy(enum pipe pipe);
> enum dpio_channel vlv_pipe_to_channel(enum pipe pipe);
>
> void chv_set_phy_signal_level(struct intel_encoder *encoder,
> @@ -116,6 +117,10 @@ static inline enum dpio_phy vlv_dig_port_to_phy(struct
> intel_digital_port *dig_p
> {
> return DPIO_PHY0;
> }
> +static inline enum dpio_phy vlv_pipe_to_phy(enum pipe pipe)
> +{
> + return DPIO_PHY0;
> +}
> static inline enum dpio_channel vlv_pipe_to_channel(enum pipe pipe)
> {
> return DPIO_CH0;
> diff --git a/drivers/gpu/drm/i915/display/intel_pps.c
> b/drivers/gpu/drm/i915/display/intel_pps.c
> index 73f0f1714b37..a8fa3a20990e 100644
> --- a/drivers/gpu/drm/i915/display/intel_pps.c
> +++ b/drivers/gpu/drm/i915/display/intel_pps.c
> @@ -90,7 +90,7 @@ vlv_power_sequencer_kick(struct intel_dp *intel_dp)
> struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
> enum pipe pipe = intel_dp->pps.pps_pipe;
> bool pll_enabled, release_cl_override = false;
> - enum dpio_phy phy = DPIO_PHY(pipe);
> + enum dpio_phy phy = vlv_pipe_to_phy(pipe);
> enum dpio_channel ch = vlv_pipe_to_channel(pipe);
> u32 DP;
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 135e8d8dbdf0..27dc903f0553 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -195,8 +195,6 @@
> #define DPIO_SFR_BYPASS (1 << 1)
> #define DPIO_CMNRST (1 << 0)
>
> -#define DPIO_PHY(pipe) ((pipe) >> 1)
> -
> /*
> * Per pipe/PLL DPIO regs
> */
> diff --git a/drivers/gpu/drm/i915/vlv_sideband.c
> b/drivers/gpu/drm/i915/vlv_sideband.c
> index b98dec3ad817..f7df55217845 100644
> --- a/drivers/gpu/drm/i915/vlv_sideband.c
> +++ b/drivers/gpu/drm/i915/vlv_sideband.c
> @@ -229,7 +229,8 @@ static u32 vlv_dpio_phy_iosf_port(struct drm_i915_private
> *i915, enum dpio_phy p
>
> u32 vlv_dpio_read(struct drm_i915_private *i915, enum pipe pipe, int reg)
> {
> - u32 port = vlv_dpio_phy_iosf_port(i915, DPIO_PHY(pipe));
> + enum dpio_phy phy = vlv_pipe_to_phy(pipe);
> + u32 port = vlv_dpio_phy_iosf_port(i915, phy);
> u32 val = 0;
>
> vlv_sideband_rw(i915, DPIO_DEVFN, port, SB_MRD_NP, reg, &val);
> @@ -248,7 +249,8 @@ u32 vlv_dpio_read(struct drm_i915_private *i915, enum
> pipe pipe, int reg)
> void vlv_dpio_write(struct drm_i915_private *i915,
> enum pipe pipe, int reg, u32 val)
> {
> - u32 port = vlv_dpio_phy_iosf_port(i915, DPIO_PHY(pipe));
> + enum dpio_phy phy = vlv_pipe_to_phy(pipe);
> + u32 port = vlv_dpio_phy_iosf_port(i915, phy);
>
> vlv_sideband_rw(i915, DPIO_DEVFN, port, SB_MWR_NP, reg, &val);
> }
> --
> 2.39.2
--
Ville Syrjälä
Intel
