Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / media / rc / img-ir / img-ir-sanyo.c

diff --git a/kernel/drivers/media/rc/img-ir/img-ir-sanyo.c b/kernel/drivers/media/rc/img-ir/img-ir-sanyo.c
new file mode 100644 (file)
index 0000000..f394994
--- /dev/null
+++ b/kernel/drivers/media/rc/img-ir/img-ir-sanyo.c
@@ -0,0 +1,129 @@
+/*
+ * ImgTec IR Decoder setup for Sanyo protocol.
+ *
+ * Copyright 2012-2014 Imagination Technologies Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * From ir-sanyo-decoder.c:
+ *
+ * This protocol uses the NEC protocol timings. However, data is formatted as:
+ *     13 bits Custom Code
+ *     13 bits NOT(Custom Code)
+ *     8 bits Key data
+ *     8 bits NOT(Key data)
+ *
+ * According with LIRC, this protocol is used on Sanyo, Aiwa and Chinon
+ * Information for this protocol is available at the Sanyo LC7461 datasheet.
+ */
+
+#include "img-ir-hw.h"
+
+/* Convert Sanyo data to a scancode */
+static int img_ir_sanyo_scancode(int len, u64 raw, u64 enabled_protocols,
+                                struct img_ir_scancode_req *request)
+{
+       unsigned int addr, addr_inv, data, data_inv;
+       /* a repeat code has no data */
+       if (!len)
+               return IMG_IR_REPEATCODE;
+       if (len != 42)
+               return -EINVAL;
+       addr     = (raw >>  0) & 0x1fff;
+       addr_inv = (raw >> 13) & 0x1fff;
+       data     = (raw >> 26) & 0xff;
+       data_inv = (raw >> 34) & 0xff;
+       /* Validate data */
+       if ((data_inv ^ data) != 0xff)
+               return -EINVAL;
+       /* Validate address */
+       if ((addr_inv ^ addr) != 0x1fff)
+               return -EINVAL;
+
+       /* Normal Sanyo */
+       request->protocol = RC_TYPE_SANYO;
+       request->scancode = addr << 8 | data;
+       return IMG_IR_SCANCODE;
+}
+
+/* Convert Sanyo scancode to Sanyo data filter */
+static int img_ir_sanyo_filter(const struct rc_scancode_filter *in,
+                              struct img_ir_filter *out, u64 protocols)
+{
+       unsigned int addr, addr_inv, data, data_inv;
+       unsigned int addr_m, data_m;
+
+       data = in->data & 0xff;
+       data_m = in->mask & 0xff;
+       data_inv = data ^ 0xff;
+
+       if (in->data & 0xff700000)
+               return -EINVAL;
+
+       addr       = (in->data >> 8) & 0x1fff;
+       addr_m     = (in->mask >> 8) & 0x1fff;
+       addr_inv   = addr ^ 0x1fff;
+
+       out->data = (u64)data_inv << 34 |
+                   (u64)data     << 26 |
+                        addr_inv << 13 |
+                        addr;
+       out->mask = (u64)data_m << 34 |
+                   (u64)data_m << 26 |
+                        addr_m << 13 |
+                        addr_m;
+       return 0;
+}
+
+/* Sanyo decoder */
+struct img_ir_decoder img_ir_sanyo = {
+       .type = RC_BIT_SANYO,
+       .control = {
+               .decoden = 1,
+               .code_type = IMG_IR_CODETYPE_PULSEDIST,
+       },
+       /* main timings */
+       .unit = 562500, /* 562.5 us */
+       .timings = {
+               /* leader symbol */
+               .ldr = {
+                       .pulse = { 16   /* 9ms */ },
+                       .space = { 8    /* 4.5ms */ },
+               },
+               /* 0 symbol */
+               .s00 = {
+                       .pulse = { 1    /* 562.5 us */ },
+                       .space = { 1    /* 562.5 us */ },
+               },
+               /* 1 symbol */
+               .s01 = {
+                       .pulse = { 1    /* 562.5 us */ },
+                       .space = { 3    /* 1687.5 us */ },
+               },
+               /* free time */
+               .ft = {
+                       .minlen = 42,
+                       .maxlen = 42,
+                       .ft_min = 10,   /* 5.625 ms */
+               },
+       },
+       /* repeat codes */
+       .repeat = 108,                  /* 108 ms */
+       .rtimings = {
+               /* leader symbol */
+               .ldr = {
+                       .space = { 4    /* 2.25 ms */ },
+               },
+               /* free time */
+               .ft = {
+                       .minlen = 0,    /* repeat code has no data */
+                       .maxlen = 0,
+               },
+       },
+       /* scancode logic */
+       .scancode = img_ir_sanyo_scancode,
+       .filter = img_ir_sanyo_filter,
+};