Re: [PATCH 1/4] drm/msm: add some cec register bitfield details

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On 18/04/2023 21:10, Arnaud Vrac wrote:
The register names and bitfields were determined from the downstream
msm-4.4 driver.

Signed-off-by: Arnaud Vrac <avrac@xxxxxxxxxx>
---
  drivers/gpu/drm/msm/hdmi/hdmi.xml.h | 62 ++++++++++++++++++++++++++++++++++++-
  1 file changed, 61 insertions(+), 1 deletion(-)

I have opened MR against Mesa at https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22588.

The patch is:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

Minor nit below


diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.xml.h b/drivers/gpu/drm/msm/hdmi/hdmi.xml.h
index 973b460486a5a..b4dd6e8cba6b7 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.xml.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.xml.h
@@ -76,6 +76,13 @@ enum hdmi_acr_cts {
  	ACR_48 = 3,
  };
+enum hdmi_cec_tx_status {
+	CEC_TX_OK = 0,
+	CEC_TX_NACK = 1,
+	CEC_TX_ARB_LOSS = 2,
+	CEC_TX_MAX_RETRIES = 3,
+};
+
  #define REG_HDMI_CTRL						0x00000000
  #define HDMI_CTRL_ENABLE					0x00000001
  #define HDMI_CTRL_HDMI						0x00000002
@@ -476,20 +483,73 @@ static inline uint32_t HDMI_DDC_REF_REFTIMER(uint32_t val)
  #define REG_HDMI_HDCP_SW_LOWER_AKSV				0x00000288
#define REG_HDMI_CEC_CTRL 0x0000028c
+#define HDMI_CEC_CTRL_ENABLE					0x00000001
+#define HDMI_CEC_CTRL_SEND_TRIGGER				0x00000002
+#define HDMI_CEC_CTRL_FRAME_SIZE__MASK				0x000001f0
+#define HDMI_CEC_CTRL_FRAME_SIZE__SHIFT				4
+static inline uint32_t HDMI_CEC_CTRL_FRAME_SIZE(uint32_t val)
+{
+	return ((val) << HDMI_CEC_CTRL_FRAME_SIZE__SHIFT) & HDMI_CEC_CTRL_FRAME_SIZE__MASK;
+}
+#define HDMI_CEC_CTRL_LINE_OE					0x00000200
#define REG_HDMI_CEC_WR_DATA 0x00000290
+#define HDMI_CEC_WR_DATA_BROADCAST				0x00000001
+#define HDMI_CEC_WR_DATA_DATA__MASK				0x0000ff00
+#define HDMI_CEC_WR_DATA_DATA__SHIFT				8
+static inline uint32_t HDMI_CEC_WR_DATA_DATA(uint32_t val)
+{
+	return ((val) << HDMI_CEC_WR_DATA_DATA__SHIFT) & HDMI_CEC_WR_DATA_DATA__MASK;
+}
-#define REG_HDMI_CEC_CEC_RETRANSMIT 0x00000294
+#define REG_HDMI_CEC_RETRANSMIT					0x00000294
+#define HDMI_CEC_RETRANSMIT_ENABLE				0x00000001
+#define HDMI_CEC_RETRANSMIT_COUNT__MASK				0x000000fe
+#define HDMI_CEC_RETRANSMIT_COUNT__SHIFT			1
+static inline uint32_t HDMI_CEC_RETRANSMIT_COUNT(uint32_t val)
+{
+	return ((val) << HDMI_CEC_RETRANSMIT_COUNT__SHIFT) & HDMI_CEC_RETRANSMIT_COUNT__MASK;
+}
#define REG_HDMI_CEC_STATUS 0x00000298
+#define HDMI_CEC_STATUS_BUSY					0x00000001
+#define HDMI_CEC_STATUS_TX_FRAME_DONE				0x00000008
+#define HDMI_CEC_STATUS_TX_STATUS__MASK				0x000000f0
+#define HDMI_CEC_STATUS_TX_STATUS__SHIFT			4
+static inline uint32_t HDMI_CEC_STATUS_TX_STATUS(enum hdmi_cec_tx_status val)
+{
+	return ((val) << HDMI_CEC_STATUS_TX_STATUS__SHIFT) & HDMI_CEC_STATUS_TX_STATUS__MASK;
+}
#define REG_HDMI_CEC_INT 0x0000029c
+#define HDMI_CEC_INT_TX_DONE					0x00000001
+#define HDMI_CEC_INT_TX_DONE_MASK				0x00000002
+#define HDMI_CEC_INT_TX_ERROR					0x00000004
+#define HDMI_CEC_INT_TX_ERROR_MASK				0x00000008
+#define HDMI_CEC_INT_MONITOR					0x00000010
+#define HDMI_CEC_INT_MONITOR_MASK				0x00000020
+#define HDMI_CEC_INT_RX_DONE					0x00000040
+#define HDMI_CEC_INT_RX_DONE_MASK				0x00000080
#define REG_HDMI_CEC_ADDR 0x000002a0 #define REG_HDMI_CEC_TIME 0x000002a4
+#define HDMI_CEC_TIME_ENABLE					0x00000001
+#define HDMI_CEC_TIME_SIGNAL_FREE_TIME__MASK			0x0000ff80
+#define HDMI_CEC_TIME_SIGNAL_FREE_TIME__SHIFT			7
+static inline uint32_t HDMI_CEC_TIME_SIGNAL_FREE_TIME(uint32_t val)
+{
+	return ((val) << HDMI_CEC_TIME_SIGNAL_FREE_TIME__SHIFT) & HDMI_CEC_TIME_SIGNAL_FREE_TIME__MASK;
+}
#define REG_HDMI_CEC_REFTIMER 0x000002a8
+#define HDMI_CEC_REFTIMER_ENABLE				0x00010000

I think this should come after the REFTIMER field.

+#define HDMI_CEC_REFTIMER_REFTIMER__MASK			0x0000ffff
+#define HDMI_CEC_REFTIMER_REFTIMER__SHIFT			0
+static inline uint32_t HDMI_CEC_REFTIMER_REFTIMER(uint32_t val)
+{
+	return ((val) << HDMI_CEC_REFTIMER_REFTIMER__SHIFT) & HDMI_CEC_REFTIMER_REFTIMER__MASK;
+}
#define REG_HDMI_CEC_RD_DATA 0x000002ac

--
With best wishes
Dmitry




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