[PATCH v2 1/5] rc: img-ir: add scancode requests to a struct

From: Sifan Naeem
Date: Thu Dec 11 2014 - 15:06:05 EST

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The information being requested of hardware decode callbacks through
the img-ir-hw scancode API is mounting up, so combine it into a struct
which can be passed in with a single pointer rather than multiple
pointer arguments. This allows it to be extended more easily without
touching all the hardware decode callbacks.

Signed-off-by: Sifan Naeem <sifan.naeem@xxxxxxxxxx>
---
drivers/media/rc/img-ir/img-ir-hw.c | 16 +++++++++-------
drivers/media/rc/img-ir/img-ir-hw.h | 16 ++++++++++++++--
drivers/media/rc/img-ir/img-ir-jvc.c | 8 ++++----
drivers/media/rc/img-ir/img-ir-nec.c | 24 ++++++++++++------------
drivers/media/rc/img-ir/img-ir-sanyo.c | 8 ++++----
drivers/media/rc/img-ir/img-ir-sharp.c | 8 ++++----
drivers/media/rc/img-ir/img-ir-sony.c | 12 ++++++------
7 files changed, 53 insertions(+), 39 deletions(-)

diff --git a/drivers/media/rc/img-ir/img-ir-hw.c b/drivers/media/rc/img-ir/img-ir-hw.c
index 2fd47c9..88fada5 100644
--- a/drivers/media/rc/img-ir/img-ir-hw.c
+++ b/drivers/media/rc/img-ir/img-ir-hw.c
@@ -806,20 +806,22 @@ static void img_ir_handle_data(struct img_ir_priv *priv, u32 len, u64 raw)
struct img_ir_priv_hw *hw = &priv->hw;
const struct img_ir_decoder *dec = hw->decoder;
int ret = IMG_IR_SCANCODE;
- u32 scancode;
- enum rc_type protocol = RC_TYPE_UNKNOWN;
+ struct img_ir_scancode_req request;
+
+ request.protocol = RC_TYPE_UNKNOWN;

if (dec->scancode)
- ret = dec->scancode(len, raw, &protocol, &scancode, hw->enabled_protocols);
+ ret = dec->scancode(len, raw, hw->enabled_protocols, &request);
else if (len >= 32)
- scancode = (u32)raw;
+ request.scancode = (u32)raw;
else if (len < 32)
- scancode = (u32)raw & ((1 << len)-1);
+ request.scancode = (u32)raw & ((1 << len)-1);
dev_dbg(priv->dev, "data (%u bits) = %#llx\n",
len, (unsigned long long)raw);
if (ret == IMG_IR_SCANCODE) {
- dev_dbg(priv->dev, "decoded scan code %#x\n", scancode);
- rc_keydown(hw->rdev, protocol, scancode, 0);
+ dev_dbg(priv->dev, "decoded scan code %#x\n",
+ request.scancode);
+ rc_keydown(hw->rdev, request.protocol, request.scancode, 0);
img_ir_end_repeat(priv);
} else if (ret == IMG_IR_REPEATCODE) {
if (hw->mode == IMG_IR_M_REPEATING) {
diff --git a/drivers/media/rc/img-ir/img-ir-hw.h b/drivers/media/rc/img-ir/img-ir-hw.h
index 5c2b216..aeef3d1 100644
--- a/drivers/media/rc/img-ir/img-ir-hw.h
+++ b/drivers/media/rc/img-ir/img-ir-hw.h
@@ -133,6 +133,18 @@ struct img_ir_timing_regvals {
#define IMG_IR_REPEATCODE 1 /* repeat the previous code */

/**
+ * struct img_ir_scancode_req - Scancode request data.
+ * @protocol: Protocol code of received message (defaults to
+ * RC_TYPE_UNKNOWN).
+ * @scancode: Scan code of received message (must be written by
+ * handler if IMG_IR_SCANCODE is returned).
+ */
+struct img_ir_scancode_req {
+ enum rc_type protocol;
+ u32 scancode;
+};
+
+/**
* struct img_ir_decoder - Decoder settings for an IR protocol.
* @type: Protocol types bitmap.
* @tolerance: Timing tolerance as a percentage (default 10%).
@@ -162,8 +174,8 @@ struct img_ir_decoder {
struct img_ir_control control;

/* scancode logic */
- int (*scancode)(int len, u64 raw, enum rc_type *protocol,
- u32 *scancode, u64 enabled_protocols);
+ int (*scancode)(int len, u64 raw, u64 enabled_protocols,
+ struct img_ir_scancode_req *request);
int (*filter)(const struct rc_scancode_filter *in,
struct img_ir_filter *out, u64 protocols);
};
diff --git a/drivers/media/rc/img-ir/img-ir-jvc.c b/drivers/media/rc/img-ir/img-ir-jvc.c
index a60dda8..d3e2fc0 100644
--- a/drivers/media/rc/img-ir/img-ir-jvc.c
+++ b/drivers/media/rc/img-ir/img-ir-jvc.c
@@ -12,8 +12,8 @@
#include "img-ir-hw.h"

/* Convert JVC data to a scancode */
-static int img_ir_jvc_scancode(int len, u64 raw, enum rc_type *protocol,
- u32 *scancode, u64 enabled_protocols)
+static int img_ir_jvc_scancode(int len, u64 raw, u64 enabled_protocols,
+ struct img_ir_scancode_req *request)
{
unsigned int cust, data;

@@ -23,8 +23,8 @@ static int img_ir_jvc_scancode(int len, u64 raw, enum rc_type *protocol,
cust = (raw >> 0) & 0xff;
data = (raw >> 8) & 0xff;

- *protocol = RC_TYPE_JVC;
- *scancode = cust << 8 | data;
+ request->protocol = RC_TYPE_JVC;
+ request->scancode = cust << 8 | data;
return IMG_IR_SCANCODE;
}

diff --git a/drivers/media/rc/img-ir/img-ir-nec.c b/drivers/media/rc/img-ir/img-ir-nec.c
index 7398975..27a7ea8 100644
--- a/drivers/media/rc/img-ir/img-ir-nec.c
+++ b/drivers/media/rc/img-ir/img-ir-nec.c
@@ -13,8 +13,8 @@
#include <linux/bitrev.h>

/* Convert NEC data to a scancode */
-static int img_ir_nec_scancode(int len, u64 raw, enum rc_type *protocol,
- u32 *scancode, u64 enabled_protocols)
+static int img_ir_nec_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 */
@@ -30,23 +30,23 @@ static int img_ir_nec_scancode(int len, u64 raw, enum rc_type *protocol,
if ((data_inv ^ data) != 0xff) {
/* 32-bit NEC (used by Apple and TiVo remotes) */
/* scan encoding: as transmitted, MSBit = first received bit */
- *scancode = bitrev8(addr) << 24 |
- bitrev8(addr_inv) << 16 |
- bitrev8(data) << 8 |
- bitrev8(data_inv);
+ request->scancode = bitrev8(addr) << 24 |
+ bitrev8(addr_inv) << 16 |
+ bitrev8(data) << 8 |
+ bitrev8(data_inv);
} else if ((addr_inv ^ addr) != 0xff) {
/* Extended NEC */
/* scan encoding: AAaaDD */
- *scancode = addr << 16 |
- addr_inv << 8 |
- data;
+ request->scancode = addr << 16 |
+ addr_inv << 8 |
+ data;
} else {
/* Normal NEC */
/* scan encoding: AADD */
- *scancode = addr << 8 |
- data;
+ request->scancode = addr << 8 |
+ data;
}
- *protocol = RC_TYPE_NEC;
+ request->protocol = RC_TYPE_NEC;
return IMG_IR_SCANCODE;
}

diff --git a/drivers/media/rc/img-ir/img-ir-sanyo.c b/drivers/media/rc/img-ir/img-ir-sanyo.c
index 6b0653e..f394994 100644
--- a/drivers/media/rc/img-ir/img-ir-sanyo.c
+++ b/drivers/media/rc/img-ir/img-ir-sanyo.c
@@ -23,8 +23,8 @@
#include "img-ir-hw.h"

/* Convert Sanyo data to a scancode */
-static int img_ir_sanyo_scancode(int len, u64 raw, enum rc_type *protocol,
- u32 *scancode, u64 enabled_protocols)
+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 */
@@ -44,8 +44,8 @@ static int img_ir_sanyo_scancode(int len, u64 raw, enum rc_type *protocol,
return -EINVAL;

/* Normal Sanyo */
- *protocol = RC_TYPE_SANYO;
- *scancode = addr << 8 | data;
+ request->protocol = RC_TYPE_SANYO;
+ request->scancode = addr << 8 | data;
return IMG_IR_SCANCODE;
}

diff --git a/drivers/media/rc/img-ir/img-ir-sharp.c b/drivers/media/rc/img-ir/img-ir-sharp.c
index 3300a38..fe5acc4 100644
--- a/drivers/media/rc/img-ir/img-ir-sharp.c
+++ b/drivers/media/rc/img-ir/img-ir-sharp.c
@@ -12,8 +12,8 @@
#include "img-ir-hw.h"

/* Convert Sharp data to a scancode */
-static int img_ir_sharp_scancode(int len, u64 raw, enum rc_type *protocol,
- u32 *scancode, u64 enabled_protocols)
+static int img_ir_sharp_scancode(int len, u64 raw, u64 enabled_protocols,
+ struct img_ir_scancode_req *request)
{
unsigned int addr, cmd, exp, chk;

@@ -32,8 +32,8 @@ static int img_ir_sharp_scancode(int len, u64 raw, enum rc_type *protocol,
/* probably the second half of the message */
return -EINVAL;

- *protocol = RC_TYPE_SHARP;
- *scancode = addr << 8 | cmd;
+ request->protocol = RC_TYPE_SHARP;
+ request->scancode = addr << 8 | cmd;
return IMG_IR_SCANCODE;
}

diff --git a/drivers/media/rc/img-ir/img-ir-sony.c b/drivers/media/rc/img-ir/img-ir-sony.c
index 3a0f17b..7f7375f 100644
--- a/drivers/media/rc/img-ir/img-ir-sony.c
+++ b/drivers/media/rc/img-ir/img-ir-sony.c
@@ -12,8 +12,8 @@
#include "img-ir-hw.h"

/* Convert Sony data to a scancode */
-static int img_ir_sony_scancode(int len, u64 raw, enum rc_type *protocol,
- u32 *scancode, u64 enabled_protocols)
+static int img_ir_sony_scancode(int len, u64 raw, u64 enabled_protocols,
+ struct img_ir_scancode_req *request)
{
unsigned int dev, subdev, func;

@@ -25,7 +25,7 @@ static int img_ir_sony_scancode(int len, u64 raw, enum rc_type *protocol,
raw >>= 7;
dev = raw & 0x1f; /* next 5 bits */
subdev = 0;
- *protocol = RC_TYPE_SONY12;
+ request->protocol = RC_TYPE_SONY12;
break;
case 15:
if (!(enabled_protocols & RC_BIT_SONY15))
@@ -34,7 +34,7 @@ static int img_ir_sony_scancode(int len, u64 raw, enum rc_type *protocol,
raw >>= 7;
dev = raw & 0xff; /* next 8 bits */
subdev = 0;
- *protocol = RC_TYPE_SONY15;
+ request->protocol = RC_TYPE_SONY15;
break;
case 20:
if (!(enabled_protocols & RC_BIT_SONY20))
@@ -44,12 +44,12 @@ static int img_ir_sony_scancode(int len, u64 raw, enum rc_type *protocol,
dev = raw & 0x1f; /* next 5 bits */
raw >>= 5;
subdev = raw & 0xff; /* next 8 bits */
- *protocol = RC_TYPE_SONY20;
+ request->protocol = RC_TYPE_SONY20;
break;
default:
return -EINVAL;
}
- *scancode = dev << 16 | subdev << 8 | func;
+ request->scancode = dev << 16 | subdev << 8 | func;
return IMG_IR_SCANCODE;
}

--
1.7.9.5

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Next message: Sifan Naeem: "[PATCH v2 5/5] rc: img-ir: add philips rc6 decoder module"
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Next in thread: Sifan Naeem: "[PATCH v2 5/5] rc: img-ir: add philips rc6 decoder module"
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