diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_dp.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_dp.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c index 1f94fcc144d3..64eee77452c0 100644 --- a/drivers/gpu/drm/mediatek/mtk_dp.c +++ b/drivers/gpu/drm/mediatek/mtk_dp.c @@ -806,10 +806,9 @@ static int mtk_dp_aux_wait_for_completion(struct mtk_dp *mtk_dp, bool is_read) } static int mtk_dp_aux_do_transfer(struct mtk_dp *mtk_dp, bool is_read, u8 cmd, - u32 addr, u8 *buf, size_t length) + u32 addr, u8 *buf, size_t length, u8 *reply_cmd) { int ret; - u32 reply_cmd; if (is_read && (length > DP_AUX_MAX_PAYLOAD_BYTES || (cmd == DP_AUX_NATIVE_READ && !length))) @@ -841,10 +840,10 @@ static int mtk_dp_aux_do_transfer(struct mtk_dp *mtk_dp, bool is_read, u8 cmd, /* Wait for feedback from sink device. */ ret = mtk_dp_aux_wait_for_completion(mtk_dp, is_read); - reply_cmd = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3624) & - AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK; + *reply_cmd = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3624) & + AUX_RX_REPLY_COMMAND_AUX_TX_P0_MASK; - if (ret || reply_cmd) { + if (ret) { u32 phy_status = mtk_dp_read(mtk_dp, MTK_DP_AUX_P0_3628) & AUX_RX_PHY_STATE_AUX_TX_P0_MASK; if (phy_status != AUX_RX_PHY_STATE_AUX_TX_P0_RX_IDLE) { @@ -1823,7 +1822,8 @@ static irqreturn_t mtk_dp_hpd_event_thread(int hpd, void *dev) spin_unlock_irqrestore(&mtk_dp->irq_thread_lock, flags); if (status & MTK_DP_THREAD_CABLE_STATE_CHG) { - drm_helper_hpd_irq_event(mtk_dp->bridge.dev); + if (mtk_dp->bridge.dev) + drm_helper_hpd_irq_event(mtk_dp->bridge.dev); if (!mtk_dp->train_info.cable_plugged_in) { mtk_dp_disable_sdp_aui(mtk_dp); @@ -2070,7 +2070,7 @@ static ssize_t mtk_dp_aux_transfer(struct drm_dp_aux *mtk_aux, ret = mtk_dp_aux_do_transfer(mtk_dp, is_read, request, msg->address + accessed_bytes, msg->buffer + accessed_bytes, - to_access); + to_access, &msg->reply); if (ret) { drm_info(mtk_dp->drm_dev, @@ -2080,7 +2080,6 @@ static ssize_t mtk_dp_aux_transfer(struct drm_dp_aux *mtk_aux, accessed_bytes += to_access; } while (accessed_bytes < msg->size); - msg->reply = DP_AUX_NATIVE_REPLY_ACK | DP_AUX_I2C_REPLY_ACK; return msg->size; err: msg->reply = DP_AUX_NATIVE_REPLY_NACK | DP_AUX_I2C_REPLY_NACK; |