[Intel-gfx] [PATCH 2/8] drm/i915: Added SDP and VSC structures for handling PSR for eDP

[Daniel Vetter]

On Fri, Jan 11, 2013 at 05:57:51PM -0200, Rodrigo Vivi wrote:
> From: Shobhit Kumar <shobhit.kumar at intel.com>
> 
> Signed-off-by: Sateesh Kavuri <sateesh.kavuri at intel.com>
> 
> v2: Modified and corrected the structures to be more in line for
> kernel coding guidelines and rebased the code on Paulo's DP patchset
> 
> Signed-off-by: Shobhit Kumar <shobhit.kumar at intel.com>
> 
> v3: removing unecessary identation at DP_RECEIVER_CAP_SIZE
> 
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>

DP spec stuff should be put into the drm core imo, i.e. into
include/drm/drm_dp_helper.h Since all bitfields are u8 we also have no
problems with endianess for this.
-Daniel

> ---
>  drivers/gpu/drm/i915/intel_drv.h | 28 ++++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 116580b..9799fe9 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -371,10 +371,38 @@ struct intel_dp {
>  	int backlight_on_delay;
>  	int backlight_off_delay;
>  	struct delayed_work panel_vdd_work;
> +	uint8_t psr_setup;
>  	bool want_panel_vdd;
>  	struct intel_connector *attached_connector;
>  };
>  
> +/* SDP header as per eDP 1.3 spec, section 3.6 */
> +struct edp_sdp_header {
> +	u8 id;
> +	u8 type;
> +	u8 revision : 5;   	    /* Bits 0:4 */
> +	u8 rsvd1    : 3;   	    /* Bits 5:7 */
> +	u8 valid_payload_bytes : 5; /* Bits 0:4 */
> +	u8 rsvd2	       : 3; /* Bits 5:7 */
> +} __attribute__((packed));
> +
> +/* SDP VSC header as per eDP 1.3 spec, section 3.6 */
> +struct edp_vsc_psr {
> +	struct edp_sdp_header sdp_header;
> +	u8 unused;
> +	u8 psr_state  : 1; 	/* Bit 0 */
> +	u8 update_rfb : 1;	/* Bit 1 */
> +	u8 valid_crc  : 1;	/* Bit 2 */
> +	u8 reserved1  : 5;	/* Bits 3:7 */
> +	u8 crc_r_lower;
> +	u8 crc_r_higher;
> +	u8 crc_g_lower;
> +	u8 crc_g_higher;
> +	u8 crc_b_lower;
> +	u8 crc_b_higher;
> +	u8 reserved2[24];
> +} __attribute__((packed));
> +
>  struct intel_digital_port {
>  	struct intel_encoder base;
>  	enum port port;
> -- 
> 1.7.11.7
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch