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path: root/drivers/gpu/drm/i915/dvo_tfp410.c
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Diffstat (limited to 'drivers/gpu/drm/i915/dvo_tfp410.c')
-rw-r--r--drivers/gpu/drm/i915/dvo_tfp410.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/dvo_tfp410.c b/drivers/gpu/drm/i915/dvo_tfp410.c
index 097b3e82b00f..e17f1b07e915 100644
--- a/drivers/gpu/drm/i915/dvo_tfp410.c
+++ b/drivers/gpu/drm/i915/dvo_tfp410.c
@@ -249,6 +249,19 @@ static void tfp410_dpms(struct intel_dvo_device *dvo, bool enable)
tfp410_writeb(dvo, TFP410_CTL_1, ctl1);
}
+static bool tfp410_get_hw_state(struct intel_dvo_device *dvo)
+{
+ uint8_t ctl1;
+
+ if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
+ return false;
+
+ if (ctl1 & TFP410_CTL_1_PD)
+ return true;
+ else
+ return false;
+}
+
static void tfp410_dump_regs(struct intel_dvo_device *dvo)
{
uint8_t val, val2;
@@ -299,6 +312,7 @@ struct intel_dvo_dev_ops tfp410_ops = {
.mode_valid = tfp410_mode_valid,
.mode_set = tfp410_mode_set,
.dpms = tfp410_dpms,
+ .get_hw_state = tfp410_get_hw_state,
.dump_regs = tfp410_dump_regs,
.destroy = tfp410_destroy,
};