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path: root/drivers/gpu/drm/msm/dp/dp_audio.c
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Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_audio.c')
-rw-r--r--drivers/gpu/drm/msm/dp/dp_audio.c101
1 files changed, 15 insertions, 86 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_audio.c b/drivers/gpu/drm/msm/dp/dp_audio.c
index 4a2e479723a8..7634e4b74208 100644
--- a/drivers/gpu/drm/msm/dp/dp_audio.c
+++ b/drivers/gpu/drm/msm/dp/dp_audio.c
@@ -15,13 +15,7 @@
#include "dp_audio.h"
#include "dp_panel.h"
#include "dp_display.h"
-
-#define HEADER_BYTE_2_BIT 0
-#define PARITY_BYTE_2_BIT 8
-#define HEADER_BYTE_1_BIT 16
-#define PARITY_BYTE_1_BIT 24
-#define HEADER_BYTE_3_BIT 16
-#define PARITY_BYTE_3_BIT 24
+#include "dp_utils.h"
struct dp_audio_private {
struct platform_device *audio_pdev;
@@ -36,71 +30,6 @@ struct dp_audio_private {
struct dp_audio dp_audio;
};
-static u8 dp_audio_get_g0_value(u8 data)
-{
- u8 c[4];
- u8 g[4];
- u8 ret_data = 0;
- u8 i;
-
- for (i = 0; i < 4; i++)
- c[i] = (data >> i) & 0x01;
-
- g[0] = c[3];
- g[1] = c[0] ^ c[3];
- g[2] = c[1];
- g[3] = c[2];
-
- for (i = 0; i < 4; i++)
- ret_data = ((g[i] & 0x01) << i) | ret_data;
-
- return ret_data;
-}
-
-static u8 dp_audio_get_g1_value(u8 data)
-{
- u8 c[4];
- u8 g[4];
- u8 ret_data = 0;
- u8 i;
-
- for (i = 0; i < 4; i++)
- c[i] = (data >> i) & 0x01;
-
- g[0] = c[0] ^ c[3];
- g[1] = c[0] ^ c[1] ^ c[3];
- g[2] = c[1] ^ c[2];
- g[3] = c[2] ^ c[3];
-
- for (i = 0; i < 4; i++)
- ret_data = ((g[i] & 0x01) << i) | ret_data;
-
- return ret_data;
-}
-
-static u8 dp_audio_calculate_parity(u32 data)
-{
- u8 x0 = 0;
- u8 x1 = 0;
- u8 ci = 0;
- u8 iData = 0;
- u8 i = 0;
- u8 parity_byte;
- u8 num_byte = (data & 0xFF00) > 0 ? 8 : 2;
-
- for (i = 0; i < num_byte; i++) {
- iData = (data >> i*4) & 0xF;
-
- ci = iData ^ x1;
- x1 = x0 ^ dp_audio_get_g1_value(ci);
- x0 = dp_audio_get_g0_value(ci);
- }
-
- parity_byte = x1 | (x0 << 4);
-
- return parity_byte;
-}
-
static u32 dp_audio_get_header(struct dp_catalog *catalog,
enum dp_catalog_audio_sdp_type sdp,
enum dp_catalog_audio_header_type header)
@@ -134,7 +63,7 @@ static void dp_audio_stream_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_STREAM, DP_AUDIO_SDP_HEADER_1);
new_value = 0x02;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_1_BIT)
| (parity_byte << PARITY_BYTE_1_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -147,7 +76,7 @@ static void dp_audio_stream_sdp(struct dp_audio_private *audio)
value = dp_audio_get_header(catalog,
DP_AUDIO_SDP_STREAM, DP_AUDIO_SDP_HEADER_2);
new_value = value;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_2_BIT)
| (parity_byte << PARITY_BYTE_2_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -162,7 +91,7 @@ static void dp_audio_stream_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_STREAM, DP_AUDIO_SDP_HEADER_3);
new_value = audio->channels - 1;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_3_BIT)
| (parity_byte << PARITY_BYTE_3_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -184,7 +113,7 @@ static void dp_audio_timestamp_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_TIMESTAMP, DP_AUDIO_SDP_HEADER_1);
new_value = 0x1;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_1_BIT)
| (parity_byte << PARITY_BYTE_1_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -198,7 +127,7 @@ static void dp_audio_timestamp_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_TIMESTAMP, DP_AUDIO_SDP_HEADER_2);
new_value = 0x17;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_2_BIT)
| (parity_byte << PARITY_BYTE_2_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -212,7 +141,7 @@ static void dp_audio_timestamp_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_TIMESTAMP, DP_AUDIO_SDP_HEADER_3);
new_value = (0x0 | (0x11 << 2));
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_3_BIT)
| (parity_byte << PARITY_BYTE_3_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -233,7 +162,7 @@ static void dp_audio_infoframe_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_INFOFRAME, DP_AUDIO_SDP_HEADER_1);
new_value = 0x84;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_1_BIT)
| (parity_byte << PARITY_BYTE_1_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -247,7 +176,7 @@ static void dp_audio_infoframe_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_INFOFRAME, DP_AUDIO_SDP_HEADER_2);
new_value = 0x1b;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_2_BIT)
| (parity_byte << PARITY_BYTE_2_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -261,7 +190,7 @@ static void dp_audio_infoframe_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_INFOFRAME, DP_AUDIO_SDP_HEADER_3);
new_value = (0x0 | (0x11 << 2));
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_3_BIT)
| (parity_byte << PARITY_BYTE_3_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -282,7 +211,7 @@ static void dp_audio_copy_management_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_COPYMANAGEMENT, DP_AUDIO_SDP_HEADER_1);
new_value = 0x05;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_1_BIT)
| (parity_byte << PARITY_BYTE_1_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -296,7 +225,7 @@ static void dp_audio_copy_management_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_COPYMANAGEMENT, DP_AUDIO_SDP_HEADER_2);
new_value = 0x0F;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_2_BIT)
| (parity_byte << PARITY_BYTE_2_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -310,7 +239,7 @@ static void dp_audio_copy_management_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_COPYMANAGEMENT, DP_AUDIO_SDP_HEADER_3);
new_value = 0x0;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_3_BIT)
| (parity_byte << PARITY_BYTE_3_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -331,7 +260,7 @@ static void dp_audio_isrc_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_ISRC, DP_AUDIO_SDP_HEADER_1);
new_value = 0x06;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_1_BIT)
| (parity_byte << PARITY_BYTE_1_BIT));
drm_dbg_dp(audio->drm_dev,
@@ -345,7 +274,7 @@ static void dp_audio_isrc_sdp(struct dp_audio_private *audio)
DP_AUDIO_SDP_ISRC, DP_AUDIO_SDP_HEADER_2);
new_value = 0x0F;
- parity_byte = dp_audio_calculate_parity(new_value);
+ parity_byte = dp_utils_calculate_parity(new_value);
value |= ((new_value << HEADER_BYTE_2_BIT)
| (parity_byte << PARITY_BYTE_2_BIT));
drm_dbg_dp(audio->drm_dev,
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-15 23:42:38 +0300