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msm/display: add more panel info sys node

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msm/display:
Add more panel info sys node for moto care.
Use drm_conn->kdev to get
/sys/class/drm/card0-DSI-1 handle:
panelId
panelName
panelVer
panelRegDA
panelSupplier

Change-Id: Iefb5dc5816a885fda0c69700d2dd9ffe2eeb43a0
Signed-off-by: wangyq13 <wangyq13@lenovo.com>
Reviewed-on: https://gerrit.mot.com/1845582
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Dezhen Hou <houdz1@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
wangyq13 2021-01-12 14:28:49 +08:00 • committed by tongkun1
commit f5b4d7047b
1 changed files with 114 additions and 0 deletions
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114
msm/dsi/dsi_display.c
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@ -6477,6 +6477,118 @@ static void dsi_display_firmware_display(const struct firmware *fw,
DSI_DEBUG("success\n");
}
/*
Add /sys/class/drm path, other module can get panel info from this path.
*/
struct dsi_display *display_panel = NULL;
static ssize_t panelId_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int written = 0;
mutex_lock(&display_panel->drm_conn->dev->mode_config.mutex);
written = snprintf(buf, PAGE_SIZE, "0x%016llx\n",
display_panel->panel->panel_id);
mutex_unlock(&display_panel->drm_conn->dev->mode_config.mutex);
return written;
}
static ssize_t panelVer_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int written = 0;
mutex_lock(&display_panel->drm_conn->dev->mode_config.mutex);
written = snprintf(buf, PAGE_SIZE, "0x%016llx\n",
display_panel->panel->panel_ver);
mutex_unlock(&display_panel->drm_conn->dev->mode_config.mutex);
return written;
}
static ssize_t panelName_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int written = 0;
mutex_lock(&display_panel->drm_conn->dev->mode_config.mutex);
written = snprintf(buf, PAGE_SIZE, "%s\n", display_panel->panel->panel_name);
mutex_unlock(&display_panel->drm_conn->dev->mode_config.mutex);
return written;
}
static ssize_t panelRegDA_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int written = 0;
mutex_lock(&display_panel->drm_conn->dev->mode_config.mutex);
written = snprintf(buf, PAGE_SIZE, "0x%02x\n", display_panel->panel->panel_regDA);
mutex_unlock(&display_panel->drm_conn->dev->mode_config.mutex);
return written;
}
static ssize_t panelSupplier_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int written = 0;
mutex_lock(&display_panel->drm_conn->dev->mode_config.mutex);
written = scnprintf(buf, PAGE_SIZE, display_panel->panel->panel_supplier);
mutex_unlock(&display_panel->drm_conn->dev->mode_config.mutex);
return written;
}
static struct device_attribute panel_attributes[] = {
__ATTR_RO(panelId),
__ATTR_RO(panelVer),
__ATTR_RO(panelName),
__ATTR_RO(panelRegDA),
__ATTR_RO(panelSupplier),
__ATTR_NULL
};
#define DRM_RETRY_TIMES 3
static int panel_class_create(struct platform_device *pdev)
{
struct device_attribute *attrs = panel_attributes;
int i, j, error = 0;
display_panel = platform_get_drvdata(pdev);
for (j = 0; j < DRM_RETRY_TIMES; j++) {
if (display_panel->drm_conn->kdev) {
for (i = 0; attrs[i].attr.name != NULL; ++i) {
error = device_create_file(display_panel->drm_conn->kdev, &attrs[i]);
if (error)
break;
}
} else {
DSI_ERR("drm_conn->kdev is NULL, retry %d times\n", j);
}
}
if (error)
goto device_destroy;
return 0;
device_destroy:
for (--i; i >= 0; --i)
device_remove_file(display_panel->drm_conn->kdev, &attrs[i]);
DSI_ERR("creating panel class failed\n");
return -ENODEV;
}
int dsi_display_dev_probe(struct platform_device *pdev)
{
struct dsi_display *display = NULL;
@ -6577,6 +6689,8 @@ int dsi_display_dev_probe(struct platform_device *pdev)
goto end;
}
panel_class_create(pdev);
return 0;
end:
if (display)