Re: [Intel-gfx] [PATCH v2 07/11] drm/i915/dp-aux: switch to intel_de_* register accessors in display code

[Andrzej Hajda <andrzej.hajda@intel.com>]

On 07.12.2022 18:17, Jani Nikula wrote:
> Avoid direct uncore use in display code.
> 
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>

Regards
Andrzej

> ---
>   drivers/gpu/drm/i915/display/intel_dp_aux.c | 29 +++++++++------------
>   1 file changed, 13 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.c b/drivers/gpu/drm/i915/display/intel_dp_aux.c
> index 664bebdecea7..91c93c93e5fc 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_aux.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_aux.c
> @@ -6,6 +6,7 @@
>   #include "i915_drv.h"
>   #include "i915_reg.h"
>   #include "i915_trace.h"
> +#include "intel_de.h"
>   #include "intel_display_types.h"
>   #include "intel_dp_aux.h"
>   #include "intel_pps.h"
> @@ -42,7 +43,7 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp)
>   	u32 status;
>   	bool done;
>   
> -#define C (((status = intel_uncore_read_notrace(&i915->uncore, ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0)
> +#define C (((status = intel_de_read_notrace(i915, ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0)
>   	done = wait_event_timeout(i915->display.gmbus.wait_queue, C,
>   				  msecs_to_jiffies_timeout(timeout_ms));
>   
> @@ -191,7 +192,6 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
>   	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
>   	struct drm_i915_private *i915 =
>   			to_i915(dig_port->base.base.dev);
> -	struct intel_uncore *uncore = &i915->uncore;
>   	enum phy phy = intel_port_to_phy(i915, dig_port->base.port);
>   	bool is_tc_port = intel_phy_is_tc(i915, phy);
>   	i915_reg_t ch_ctl, ch_data[5];
> @@ -235,7 +235,7 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
>   
>   	/* Try to wait for any previous AUX channel activity */
>   	for (try = 0; try < 3; try++) {
> -		status = intel_uncore_read_notrace(uncore, ch_ctl);
> +		status = intel_de_read_notrace(i915, ch_ctl);
>   		if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0)
>   			break;
>   		msleep(1);
> @@ -244,7 +244,7 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
>   	trace_i915_reg_rw(false, ch_ctl, status, sizeof(status), true);
>   
>   	if (try == 3) {
> -		const u32 status = intel_uncore_read(uncore, ch_ctl);
> +		const u32 status = intel_de_read(i915, ch_ctl);
>   
>   		if (status != intel_dp->aux_busy_last_status) {
>   			drm_WARN(&i915->drm, 1,
> @@ -274,23 +274,20 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
>   		for (try = 0; try < 5; try++) {
>   			/* Load the send data into the aux channel data registers */
>   			for (i = 0; i < send_bytes; i += 4)
> -				intel_uncore_write(uncore,
> -						   ch_data[i >> 2],
> -						   intel_dp_aux_pack(send + i,
> -								     send_bytes - i));
> +				intel_de_write(i915, ch_data[i >> 2],
> +					       intel_dp_aux_pack(send + i,
> +								 send_bytes - i));
>   
>   			/* Send the command and wait for it to complete */
> -			intel_uncore_write(uncore, ch_ctl, send_ctl);
> +			intel_de_write(i915, ch_ctl, send_ctl);
>   
>   			status = intel_dp_aux_wait_done(intel_dp);
>   
>   			/* Clear done status and any errors */
> -			intel_uncore_write(uncore,
> -					   ch_ctl,
> -					   status |
> -					   DP_AUX_CH_CTL_DONE |
> -					   DP_AUX_CH_CTL_TIME_OUT_ERROR |
> -					   DP_AUX_CH_CTL_RECEIVE_ERROR);
> +			intel_de_write(i915, ch_ctl,
> +				       status | DP_AUX_CH_CTL_DONE |
> +				       DP_AUX_CH_CTL_TIME_OUT_ERROR |
> +				       DP_AUX_CH_CTL_RECEIVE_ERROR);
>   
>   			/*
>   			 * DP CTS 1.2 Core Rev 1.1, 4.2.1.1 & 4.2.1.2
> @@ -361,7 +358,7 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp,
>   		recv_bytes = recv_size;
>   
>   	for (i = 0; i < recv_bytes; i += 4)
> -		intel_dp_aux_unpack(intel_uncore_read(uncore, ch_data[i >> 2]),
> +		intel_dp_aux_unpack(intel_de_read(i915, ch_data[i >> 2]),
>   				    recv + i, recv_bytes - i);
>   
>   	ret = recv_bytes;