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-rw-r--r--drivers/media/rc/img-ir/Kconfig7
-rw-r--r--drivers/media/rc/img-ir/Makefile1
-rw-r--r--drivers/media/rc/img-ir/img-ir-hw.c4
-rw-r--r--drivers/media/rc/img-ir/img-ir-sony.c145
4 files changed, 157 insertions, 0 deletions
diff --git a/drivers/media/rc/img-ir/Kconfig b/drivers/media/rc/img-ir/Kconfig
index 96006fbfb0d6..ab365778b5d2 100644
--- a/drivers/media/rc/img-ir/Kconfig
+++ b/drivers/media/rc/img-ir/Kconfig
@@ -38,3 +38,10 @@ config IR_IMG_JVC
38 help 38 help
39 Say Y here to enable support for the JVC protocol in the ImgTec 39 Say Y here to enable support for the JVC protocol in the ImgTec
40 infrared decoder block. 40 infrared decoder block.
41
42config IR_IMG_SONY
43 bool "Sony protocol support"
44 depends on IR_IMG_HW
45 help
46 Say Y here to enable support for the Sony protocol in the ImgTec
47 infrared decoder block.
diff --git a/drivers/media/rc/img-ir/Makefile b/drivers/media/rc/img-ir/Makefile
index c5f8f06c89eb..978c0c6713ab 100644
--- a/drivers/media/rc/img-ir/Makefile
+++ b/drivers/media/rc/img-ir/Makefile
@@ -3,6 +3,7 @@ img-ir-$(CONFIG_IR_IMG_RAW) += img-ir-raw.o
3img-ir-$(CONFIG_IR_IMG_HW) += img-ir-hw.o 3img-ir-$(CONFIG_IR_IMG_HW) += img-ir-hw.o
4img-ir-$(CONFIG_IR_IMG_NEC) += img-ir-nec.o 4img-ir-$(CONFIG_IR_IMG_NEC) += img-ir-nec.o
5img-ir-$(CONFIG_IR_IMG_JVC) += img-ir-jvc.o 5img-ir-$(CONFIG_IR_IMG_JVC) += img-ir-jvc.o
6img-ir-$(CONFIG_IR_IMG_SONY) += img-ir-sony.o
6img-ir-objs := $(img-ir-y) 7img-ir-objs := $(img-ir-y)
7 8
8obj-$(CONFIG_IR_IMG) += img-ir.o 9obj-$(CONFIG_IR_IMG) += img-ir.o
diff --git a/drivers/media/rc/img-ir/img-ir-hw.c b/drivers/media/rc/img-ir/img-ir-hw.c
index 81c50e3f88d9..0d4f9211f9f2 100644
--- a/drivers/media/rc/img-ir/img-ir-hw.c
+++ b/drivers/media/rc/img-ir/img-ir-hw.c
@@ -22,6 +22,7 @@ static DEFINE_SPINLOCK(img_ir_decoders_lock);
22 22
23extern struct img_ir_decoder img_ir_nec; 23extern struct img_ir_decoder img_ir_nec;
24extern struct img_ir_decoder img_ir_jvc; 24extern struct img_ir_decoder img_ir_jvc;
25extern struct img_ir_decoder img_ir_sony;
25 26
26static bool img_ir_decoders_preprocessed; 27static bool img_ir_decoders_preprocessed;
27static struct img_ir_decoder *img_ir_decoders[] = { 28static struct img_ir_decoder *img_ir_decoders[] = {
@@ -31,6 +32,9 @@ static struct img_ir_decoder *img_ir_decoders[] = {
31#ifdef CONFIG_IR_IMG_JVC 32#ifdef CONFIG_IR_IMG_JVC
32 &img_ir_jvc, 33 &img_ir_jvc,
33#endif 34#endif
35#ifdef CONFIG_IR_IMG_SONY
36 &img_ir_sony,
37#endif
34 NULL 38 NULL
35}; 39};
36 40
diff --git a/drivers/media/rc/img-ir/img-ir-sony.c b/drivers/media/rc/img-ir/img-ir-sony.c
new file mode 100644
index 000000000000..993409a51a71
--- /dev/null
+++ b/drivers/media/rc/img-ir/img-ir-sony.c
@@ -0,0 +1,145 @@
1/*
2 * ImgTec IR Decoder setup for Sony (SIRC) protocol.
3 *
4 * Copyright 2012-2014 Imagination Technologies Ltd.
5 */
6
7#include "img-ir-hw.h"
8
9/* Convert Sony data to a scancode */
10static int img_ir_sony_scancode(int len, u64 raw, int *scancode, u64 protocols)
11{
12 unsigned int dev, subdev, func;
13
14 switch (len) {
15 case 12:
16 if (!(protocols & RC_BIT_SONY12))
17 return -EINVAL;
18 func = raw & 0x7f; /* first 7 bits */
19 raw >>= 7;
20 dev = raw & 0x1f; /* next 5 bits */
21 subdev = 0;
22 break;
23 case 15:
24 if (!(protocols & RC_BIT_SONY15))
25 return -EINVAL;
26 func = raw & 0x7f; /* first 7 bits */
27 raw >>= 7;
28 dev = raw & 0xff; /* next 8 bits */
29 subdev = 0;
30 break;
31 case 20:
32 if (!(protocols & RC_BIT_SONY20))
33 return -EINVAL;
34 func = raw & 0x7f; /* first 7 bits */
35 raw >>= 7;
36 dev = raw & 0x1f; /* next 5 bits */
37 raw >>= 5;
38 subdev = raw & 0xff; /* next 8 bits */
39 break;
40 default:
41 return -EINVAL;
42 }
43 *scancode = dev << 16 | subdev << 8 | func;
44 return IMG_IR_SCANCODE;
45}
46
47/* Convert NEC scancode to NEC data filter */
48static int img_ir_sony_filter(const struct rc_scancode_filter *in,
49 struct img_ir_filter *out, u64 protocols)
50{
51 unsigned int dev, subdev, func;
52 unsigned int dev_m, subdev_m, func_m;
53 unsigned int len = 0;
54
55 dev = (in->data >> 16) & 0xff;
56 dev_m = (in->mask >> 16) & 0xff;
57 subdev = (in->data >> 8) & 0xff;
58 subdev_m = (in->mask >> 8) & 0xff;
59 func = (in->data >> 0) & 0x7f;
60 func_m = (in->mask >> 0) & 0x7f;
61
62 if (subdev & subdev_m) {
63 /* can't encode subdev and higher device bits */
64 if (dev & dev_m & 0xe0)
65 return -EINVAL;
66 /* subdevice (extended) bits only in 20 bit encoding */
67 if (!(protocols & RC_BIT_SONY20))
68 return -EINVAL;
69 len = 20;
70 dev_m &= 0x1f;
71 } else if (dev & dev_m & 0xe0) {
72 /* upper device bits only in 15 bit encoding */
73 if (!(protocols & RC_BIT_SONY15))
74 return -EINVAL;
75 len = 15;
76 subdev_m = 0;
77 } else {
78 /*
79 * The hardware mask cannot distinguish high device bits and low
80 * extended bits, so logically AND those bits of the masks
81 * together.
82 */
83 subdev_m &= (dev_m >> 5) | 0xf8;
84 dev_m &= 0x1f;
85 }
86
87 /* ensure there aren't any bits straying between fields */
88 dev &= dev_m;
89 subdev &= subdev_m;
90
91 /* write the hardware filter */
92 out->data = func |
93 dev << 7 |
94 subdev << 15;
95 out->mask = func_m |
96 dev_m << 7 |
97 subdev_m << 15;
98
99 if (len) {
100 out->minlen = len;
101 out->maxlen = len;
102 }
103 return 0;
104}
105
106/*
107 * Sony SIRC decoder
108 * See also http://www.sbprojects.com/knowledge/ir/sirc.php
109 * http://picprojects.org.uk/projects/sirc/sonysirc.pdf
110 */
111struct img_ir_decoder img_ir_sony = {
112 .type = RC_BIT_SONY12 | RC_BIT_SONY15 | RC_BIT_SONY20,
113 .control = {
114 .decoden = 1,
115 .code_type = IMG_IR_CODETYPE_PULSELEN,
116 },
117 /* main timings */
118 .unit = 600000, /* 600 us */
119 .timings = {
120 /* leader symbol */
121 .ldr = {
122 .pulse = { 4 /* 2.4 ms */ },
123 .space = { 1 /* 600 us */ },
124 },
125 /* 0 symbol */
126 .s00 = {
127 .pulse = { 1 /* 600 us */ },
128 .space = { 1 /* 600 us */ },
129 },
130 /* 1 symbol */
131 .s01 = {
132 .pulse = { 2 /* 1.2 ms */ },
133 .space = { 1 /* 600 us */ },
134 },
135 /* free time */
136 .ft = {
137 .minlen = 12,
138 .maxlen = 20,
139 .ft_min = 10, /* 6 ms */
140 },
141 },
142 /* scancode logic */
143 .scancode = img_ir_sony_scancode,
144 .filter = img_ir_sony_filter,
145};
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-20 14:43:45 -0400