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path: root/drivers/media/rc/img-ir/img-ir-jvc.c
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Diffstat (limited to 'drivers/media/rc/img-ir/img-ir-jvc.c')
-rw-r--r--drivers/media/rc/img-ir/img-ir-jvc.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/media/rc/img-ir/img-ir-jvc.c b/drivers/media/rc/img-ir/img-ir-jvc.c
new file mode 100644
index 000000000000..10209d200efb
--- /dev/null
+++ b/drivers/media/rc/img-ir/img-ir-jvc.c
@@ -0,0 +1,81 @@
+/*
+ * ImgTec IR Decoder setup for JVC protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert JVC data to a scancode */
+static int img_ir_jvc_scancode(int len, u64 raw, int *scancode, u64 protocols)
+{
+ unsigned int cust, data;
+
+ if (len != 16)
+ return -EINVAL;
+
+ cust = (raw >> 0) & 0xff;
+ data = (raw >> 8) & 0xff;
+
+ *scancode = cust << 8 | data;
+ return IMG_IR_SCANCODE;
+}
+
+/* Convert JVC scancode to JVC data filter */
+static int img_ir_jvc_filter(const struct rc_scancode_filter *in,
+ struct img_ir_filter *out, u64 protocols)
+{
+ unsigned int cust, data;
+ unsigned int cust_m, data_m;
+
+ cust = (in->data >> 8) & 0xff;
+ cust_m = (in->mask >> 8) & 0xff;
+ data = (in->data >> 0) & 0xff;
+ data_m = (in->mask >> 0) & 0xff;
+
+ out->data = cust | data << 8;
+ out->mask = cust_m | data_m << 8;
+
+ return 0;
+}
+
+/*
+ * JVC decoder
+ * See also http://www.sbprojects.com/knowledge/ir/jvc.php
+ * http://support.jvc.com/consumer/support/documents/RemoteCodes.pdf
+ */
+struct img_ir_decoder img_ir_jvc = {
+ .type = RC_BIT_JVC,
+ .control = {
+ .decoden = 1,
+ .code_type = IMG_IR_CODETYPE_PULSEDIST,
+ },
+ /* main timings */
+ .unit = 527500, /* 527.5 us */
+ .timings = {
+ /* leader symbol */
+ .ldr = {
+ .pulse = { 16 /* 8.44 ms */ },
+ .space = { 8 /* 4.22 ms */ },
+ },
+ /* 0 symbol */
+ .s00 = {
+ .pulse = { 1 /* 527.5 us +-60 us */ },
+ .space = { 1 /* 527.5 us */ },
+ },
+ /* 1 symbol */
+ .s01 = {
+ .pulse = { 1 /* 527.5 us +-60 us */ },
+ .space = { 3 /* 1.5825 ms +-40 us */ },
+ },
+ /* free time */
+ .ft = {
+ .minlen = 16,
+ .maxlen = 16,
+ .ft_min = 10, /* 5.275 ms */
+ },
+ },
+ /* scancode logic */
+ .scancode = img_ir_jvc_scancode,
+ .filter = img_ir_jvc_filter,
+};