Re: [PATCH 1/4] HID: microsoft: moving quirks to struct
From: Tolga Cakir
Date: Wed Apr 09 2014 - 18:07:44 EST
Am 09.04.2014 22:40, schrieb Benjamin Tissoires:
On Fri, Apr 4, 2014 at 1:06 PM, Tolga Cakir <tolga@xxxxxxxxx> wrote:
This will give us the opportunity to easily implement extra features
for new devices.
Signed-off-by: Tolga Cakir <tolga@xxxxxxxxx>
---
drivers/hid/hid-microsoft.c | 44 ++++++++++++++++++++++++++++----------------
1 file changed, 28 insertions(+), 16 deletions(-)
diff --git a/drivers/hid/hid-microsoft.c b/drivers/hid/hid-microsoft.c
index 6fd5817..0a61403 100644
--- a/drivers/hid/hid-microsoft.c
+++ b/drivers/hid/hid-microsoft.c
@@ -30,23 +30,28 @@
#define MS_DUPLICATE_USAGES 0x20
#define MS_RDESC_3K 0x40
+struct ms_data {
+ unsigned long quirks;
+ void *extra;
I do not like having a void * pointer in this kind of struct,
especially when it is not used in the current patch.
Please remove it in v2
Hi Benjamin, thank you for the review!
Yes you're right, I will change that in v2.
+};
+
static __u8 *ms_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+ struct ms_data *sc = hid_get_drvdata(hdev);
/*
* Microsoft Wireless Desktop Receiver (Model 1028) has
* 'Usage Min/Max' where it ought to have 'Physical Min/Max'
*/
- if ((quirks & MS_RDESC) && *rsize == 571 && rdesc[557] == 0x19 &&
+ if ((sc->quirks & MS_RDESC) && *rsize == 571 && rdesc[557] == 0x19 &&
rdesc[559] == 0x29) {
hid_info(hdev, "fixing up Microsoft Wireless Receiver Model 1028 report descriptor\n");
rdesc[557] = 0x35;
rdesc[559] = 0x45;
}
/* the same as above (s/usage/physical/) */
- if ((quirks & MS_RDESC_3K) && *rsize == 106 && rdesc[94] == 0x19 &&
+ if ((sc->quirks & MS_RDESC_3K) && *rsize == 106 && rdesc[94] == 0x19 &&
rdesc[95] == 0x00 && rdesc[96] == 0x29 &&
rdesc[97] == 0xff) {
rdesc[94] = 0x35;
@@ -142,15 +147,15 @@ static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+ struct ms_data *sc = hid_get_drvdata(hdev);
- if (quirks & MS_ERGONOMY) {
+ if (sc->quirks & MS_ERGONOMY) {
int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max);
if (ret)
return ret;
}
- if ((quirks & MS_PRESENTER) &&
+ if ((sc->quirks & MS_PRESENTER) &&
ms_presenter_8k_quirk(hi, usage, bit, max))
return 1;
@@ -161,9 +166,9 @@ static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+ struct ms_data *sc = hid_get_drvdata(hdev);
- if (quirks & MS_DUPLICATE_USAGES)
+ if (sc->quirks & MS_DUPLICATE_USAGES)
clear_bit(usage->code, *bit);
return 0;
@@ -172,7 +177,7 @@ static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi,
static int ms_event(struct hid_device *hdev, struct hid_field *field,
struct hid_usage *usage, __s32 value)
{
- unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+ struct ms_data *sc = hid_get_drvdata(hdev);
struct input_dev *input;
if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
@@ -182,7 +187,7 @@ static int ms_event(struct hid_device *hdev, struct hid_field *field,
input = field->hidinput->input;
/* Handling MS keyboards special buttons */
- if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff00)) {
+ if (sc->quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff00)) {
/* Special keypad keys */
input_report_key(input, KEY_KPEQUAL, value & 0x01);
input_report_key(input, KEY_KPLEFTPAREN, value & 0x02);
@@ -190,7 +195,7 @@ static int ms_event(struct hid_device *hdev, struct hid_field *field,
return 1;
}
- if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff01)) {
+ if (sc->quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff01)) {
/* Scroll wheel */
int step = ((value & 0x60) >> 5) + 1;
@@ -205,7 +210,7 @@ static int ms_event(struct hid_device *hdev, struct hid_field *field,
return 1;
}
- if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
+ if (sc->quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
static unsigned int last_key = 0;
unsigned int key = 0;
switch (value) {
@@ -229,12 +234,19 @@ static int ms_event(struct hid_device *hdev, struct hid_field *field,
static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
- unsigned long quirks = id->driver_data;
+ struct ms_data *sc;
int ret;
- hid_set_drvdata(hdev, (void *)quirks);
+ sc = devm_kzalloc(&hdev->dev, sizeof(struct ms_data), GFP_KERNEL);
+ if (!sc) {
+ hid_err(hdev, "can't alloc microsoft descriptor\n");
How about: "Can not allocate microsoft data"?
I have no idea where this "descriptor" comes from.
Besides these two nitpicks, the rest of the patch is:
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Cheers,
Benjamin
That sounds better, yeah :)! It was quite some time ago, when I came up
with "descriptor".
I remember, that it was due to the "sc" I chose for ms_data.
Unfortunately, I don't remember what "sc" is standing for, but it's also
used in hid-sony. But I'm fine using your suggestion ;)!
+ return -ENOMEM;
+ }
+
+ sc->quirks = id->driver_data;
+ hid_set_drvdata(hdev, sc);
- if (quirks & MS_NOGET)
+ if (sc->quirks & MS_NOGET)
hdev->quirks |= HID_QUIRK_NOGET;
ret = hid_parse(hdev);
@@ -243,7 +255,7 @@ static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id)
goto err_free;
}
- ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & MS_HIDINPUT) ?
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((sc->quirks & MS_HIDINPUT) ?
HID_CONNECT_HIDINPUT_FORCE : 0));
if (ret) {
hid_err(hdev, "hw start failed\n");
--
1.9.1
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