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-rw-r--r--include/media/davinci/dm644x_ccdc.h24
1 files changed, 18 insertions, 6 deletions
diff --git a/include/media/davinci/dm644x_ccdc.h b/include/media/davinci/dm644x_ccdc.h
index 3e178eb52fb3..852e96c4bb46 100644
--- a/include/media/davinci/dm644x_ccdc.h
+++ b/include/media/davinci/dm644x_ccdc.h
@@ -38,17 +38,23 @@ enum ccdc_sample_line {
CCDC_SAMPLE_16LINES
};
-/* enum for Alaw gama width */
-enum ccdc_gama_width {
- CCDC_GAMMA_BITS_15_6,
+/* enum for Alaw gamma width */
+enum ccdc_gamma_width {
+ CCDC_GAMMA_BITS_15_6, /* use bits 15-6 for gamma */
CCDC_GAMMA_BITS_14_5,
CCDC_GAMMA_BITS_13_4,
CCDC_GAMMA_BITS_12_3,
CCDC_GAMMA_BITS_11_2,
CCDC_GAMMA_BITS_10_1,
- CCDC_GAMMA_BITS_09_0
+ CCDC_GAMMA_BITS_09_0 /* use bits 9-0 for gamma */
};
+/* returns the highest bit used for the gamma */
+static inline u8 ccdc_gamma_width_max_bit(enum ccdc_gamma_width width)
+{
+ return 15 - width;
+}
+
enum ccdc_data_size {
CCDC_DATA_16BITS,
CCDC_DATA_15BITS,
@@ -60,12 +66,18 @@ enum ccdc_data_size {
CCDC_DATA_8BITS
};
+/* returns the highest bit used for this data size */
+static inline u8 ccdc_data_size_max_bit(enum ccdc_data_size sz)
+{
+ return sz == CCDC_DATA_8BITS ? 7 : 15 - sz;
+}
+
/* structure for ALaw */
struct ccdc_a_law {
/* Enable/disable A-Law */
unsigned char enable;
- /* Gama Width Input */
- enum ccdc_gama_width gama_wd;
+ /* Gamma Width Input */
+ enum ccdc_gamma_width gamma_wd;
};
/* structure for Black Clamping */