diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_sdvo.c | 40 |
1 files changed, 30 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c index bde11c03cd5a..651bf26bd1a3 100644 --- a/drivers/gpu/drm/i915/display/intel_sdvo.c +++ b/drivers/gpu/drm/i915/display/intel_sdvo.c @@ -395,11 +395,24 @@ static const struct { #undef SDVO_CMD_NAME_ENTRY +static const char *sdvo_cmd_name(u8 cmd) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(sdvo_cmd_names); i++) { + if (cmd == sdvo_cmd_names[i].cmd) + return sdvo_cmd_names[i].name; + } + + return NULL; +} + #define SDVO_NAME(svdo) ((svdo)->port == PORT_B ? "SDVOB" : "SDVOC") static void intel_sdvo_debug_write(struct intel_sdvo *intel_sdvo, u8 cmd, const void *args, int args_len) { + const char *cmd_name; int i, pos = 0; #define BUF_LEN 256 char buffer[BUF_LEN]; @@ -414,15 +427,12 @@ static void intel_sdvo_debug_write(struct intel_sdvo *intel_sdvo, u8 cmd, for (; i < 8; i++) { BUF_PRINT(" "); } - for (i = 0; i < ARRAY_SIZE(sdvo_cmd_names); i++) { - if (cmd == sdvo_cmd_names[i].cmd) { - BUF_PRINT("(%s)", sdvo_cmd_names[i].name); - break; - } - } - if (i == ARRAY_SIZE(sdvo_cmd_names)) { + + cmd_name = sdvo_cmd_name(cmd); + if (cmd_name) + BUF_PRINT("(%s)", cmd_name); + else BUF_PRINT("(%02X)", cmd); - } BUG_ON(pos >= BUF_LEN - 1); #undef BUF_PRINT #undef BUF_LEN @@ -440,6 +450,14 @@ static const char * const cmd_status_names[] = { [SDVO_CMD_STATUS_SCALING_NOT_SUPP] = "Scaling not supported", }; +static const char *sdvo_cmd_status(u8 status) +{ + if (status < ARRAY_SIZE(cmd_status_names)) + return cmd_status_names[status]; + else + return NULL; +} + static bool __intel_sdvo_write_cmd(struct intel_sdvo *intel_sdvo, u8 cmd, const void *args, int args_len, bool unlocked) @@ -518,6 +536,7 @@ static bool intel_sdvo_write_cmd(struct intel_sdvo *intel_sdvo, u8 cmd, static bool intel_sdvo_read_response(struct intel_sdvo *intel_sdvo, void *response, int response_len) { + const char *cmd_status; u8 retry = 15; /* 5 quick checks, followed by 10 long checks */ u8 status; int i, pos = 0; @@ -564,8 +583,9 @@ static bool intel_sdvo_read_response(struct intel_sdvo *intel_sdvo, #define BUF_PRINT(args...) \ pos += snprintf(buffer + pos, max_t(int, BUF_LEN - pos, 0), args) - if (status < ARRAY_SIZE(cmd_status_names)) - BUF_PRINT("(%s)", cmd_status_names[status]); + cmd_status = sdvo_cmd_status(status); + if (cmd_status) + BUF_PRINT("(%s)", cmd_status); else BUF_PRINT("(??? %d)", status); |