Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8345c679 authored by Ajay Singh Parmar's avatar Ajay Singh Parmar
Browse files

drm/msm/dsi-staging: add default edid 



Add a default EDID buffer to the DSI connector. Update the
corresponding panel name and checksum to uniquely identify
this buffer.

CRs-Fixed: 2399075
Change-Id: Ic86873d7725ebb93f69ecc7f9e78cba23ffcddbe
Signed-off-by: default avatarAjay Singh Parmar <aparmar@codeaurora.org>
parent 71f4785d

drivers/gpu/drm/msm/dsi-staging/dsi_drm.c

+63 −4
Original line number Diff line number Diff line
@@ -623,13 +623,61 @@ void dsi_connector_put_modes(struct drm_connector *connector, 
	dsi_display->modes = NULL;

}



int dsi_connector_get_modes(struct drm_connector *connector,

		void *display)



static int dsi_drm_update_edid_name(struct edid *edid, const char *name)

{

	u8 *dtd = (u8 *)&edid->detailed_timings[3];

	u8 standard_header[] = {0x00, 0x00, 0x00, 0xFE, 0x00};

	u32 dtd_size = 18;

	u32 header_size = sizeof(standard_header);



	if (!name)

		return -EINVAL;



	/* Fill standard header */

	memcpy(dtd, standard_header, header_size);



	dtd_size -= header_size;

	dtd_size = min_t(u32, dtd_size, strlen(name));



	memcpy(dtd + header_size, name, dtd_size);



	return 0;

}



static void dsi_drm_update_checksum(struct edid *edid)

{

	u8 *data = (u8 *)edid;

	u32 i, sum = 0;



	for (i = 0; i < EDID_LENGTH - 1; i++)

		sum += data[i];



	edid->checksum = 0x100 - (sum & 0xFF);

}



int dsi_connector_get_modes(struct drm_connector *connector, void *data)

{

	u32 count = 0;

	int rc, i;

	u32 count = 0, edid_size;

	struct dsi_display_mode *modes = NULL;

	struct drm_display_mode drm_mode;

	int rc, i;

	struct dsi_display *display = data;

	struct edid edid;

	const u8 edid_buf[EDID_LENGTH] = {

		0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x44, 0x6D,

		0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x1B, 0x10, 0x01, 0x03,

		0x80, 0x50, 0x2D, 0x78, 0x0A, 0x0D, 0xC9, 0xA0, 0x57, 0x47,

		0x98, 0x27, 0x12, 0x48, 0x4C, 0x00, 0x00, 0x00, 0x01, 0x01,

		0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,

		0x01, 0x01, 0x01, 0x01, 0x02, 0x3A, 0x80, 0x18, 0x71, 0x38,

		0x2D, 0x40, 0x58, 0x2C, 0x45, 0x00, 0x50, 0x1D, 0x74, 0x00,

		0x00, 0x1E,

	};



	edid_size = min_t(u32, sizeof(edid), EDID_LENGTH);



	memcpy(&edid, edid_buf, edid_size);



	if (sde_connector_get_panel(connector)) {

		/*
@@ -669,6 +717,17 @@ int dsi_connector_get_modes(struct drm_connector *connector, 
		m->height_mm = connector->display_info.height_mm;

		drm_mode_probed_add(connector, m);

	}



	rc = dsi_drm_update_edid_name(&edid, display->panel->name);

	if (rc) {

		count = 0;

		goto end;

	}



	dsi_drm_update_checksum(&edid);

	rc =  drm_connector_update_edid_property(connector, &edid);

	if (rc)

		count = 0;

end:

	pr_debug("MODE COUNT =%d\n\n", count);

	return count;