commit 6d5104c5a6b56385426e15047050584794bb6254 upstream.
In chasing down a previous issue with EDID probing from calling drm_helper_hpd_irq_event() from irq context, Laurent noticed that the DRM documentation suggests that drm_kms_helper_hotplug_event() should be used instead.
Thus this patch replaces drm_helper_hpd_irq_event() with drm_kms_helper_hotplug_event(), which requires we update the connector.status entry and only call _hotplug_event() when the status changes.
Cc: David Airlie airlied@linux.ie Cc: Archit Taneja architt@codeaurora.org Cc: Wolfram Sang wsa+renesas@sang-engineering.com Cc: Lars-Peter Clausen lars@metafoo.de Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Tested-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: John Stultz john.stultz@linaro.org Signed-off-by: Archit Taneja architt@codeaurora.org Signed-off-by: Thong Ho thong.ho.px@rvc.renesas.com Signed-off-by: Nhan Nguyen nhan.nguyen.yb@renesas.com Link: http://patchwork.freedesktop.org/patch/msgid/1484614372-15342-3-git-send-ema... --- drivers/gpu/drm/i2c/adv7511.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c index f8a8a0b..9844336 100644 --- a/drivers/gpu/drm/i2c/adv7511.c +++ b/drivers/gpu/drm/i2c/adv7511.c @@ -435,8 +435,21 @@ static bool adv7511_hpd(struct adv7511 *adv7511) static void adv7511_hpd_work(struct work_struct *work) { struct adv7511 *adv7511 = container_of(work, struct adv7511, hpd_work); + enum drm_connector_status status; + unsigned int val; + int ret; + ret = regmap_read(adv7511->regmap, ADV7511_REG_STATUS, &val); + if (ret < 0) + status = connector_status_disconnected; + else if (val & ADV7511_STATUS_HPD) + status = connector_status_connected; + else + status = connector_status_disconnected;
- drm_helper_hpd_irq_event(adv7511->connector.dev); + if (adv7511->connector.status != status) { + adv7511->connector.status = status; + drm_kms_helper_hotplug_event(adv7511->connector.dev); + } }
static int adv7511_irq_process(struct adv7511 *adv7511, bool process_hpd)