From: Jiri Kosina <jkosina@suse.cz>
To: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Henrik Rydberg <rydberg@euromail.se>,
Stephane Chatty <chatty@enac.fr>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 01/13] HID: hid-input: export hidinput_calc_abs_res
Date: Tue, 13 Nov 2012 08:45:23 +0100 (CET) [thread overview]
Message-ID: <alpine.LNX.2.00.1211130845080.15877@pobox.suse.cz> (raw)
In-Reply-To: <1352306256-12180-2-git-send-email-benjamin.tissoires@gmail.com>
On Wed, 7 Nov 2012, Benjamin Tissoires wrote:
> Exporting the function allows us to calculate the resolution in third
> party drivers like hid-multitouch.
> This patch also complete the function with additional valid axes.
>
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
> ---
> drivers/hid/hid-input.c | 9 ++++++++-
> drivers/hid/hid-multitouch.c | 1 +
> include/linux/hid.h | 1 +
> 3 files changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
> index 10248cf..f5b1d57 100644
> --- a/drivers/hid/hid-input.c
> +++ b/drivers/hid/hid-input.c
> @@ -208,7 +208,7 @@ static int hidinput_setkeycode(struct input_dev *dev,
> * Only exponent 1 length units are processed. Centimeters and inches are
> * converted to millimeters. Degrees are converted to radians.
> */
> -static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
> +__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
> {
> __s32 unit_exponent = field->unit_exponent;
> __s32 logical_extents = field->logical_maximum -
> @@ -229,6 +229,12 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
> case ABS_X:
> case ABS_Y:
> case ABS_Z:
> + case ABS_MT_POSITION_X:
> + case ABS_MT_POSITION_Y:
> + case ABS_MT_TOOL_X:
> + case ABS_MT_TOOL_Y:
> + case ABS_MT_TOUCH_MAJOR:
> + case ABS_MT_TOUCH_MINOR:
> if (field->unit == 0x11) { /* If centimeters */
> /* Convert to millimeters */
> unit_exponent += 1;
> @@ -283,6 +289,7 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
> /* Calculate resolution */
> return logical_extents / physical_extents;
> }
> +EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
>
> #ifdef CONFIG_HID_BATTERY_STRENGTH
> static enum power_supply_property hidinput_battery_props[] = {
> diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
> index 3eb02b9..9f64e36 100644
> --- a/drivers/hid/hid-multitouch.c
> +++ b/drivers/hid/hid-multitouch.c
> @@ -298,6 +298,7 @@ static void set_abs(struct input_dev *input, unsigned int code,
> int fmax = field->logical_maximum;
> int fuzz = snratio ? (fmax - fmin) / snratio : 0;
> input_set_abs_params(input, code, fmin, fmax, fuzz, 0);
> + input_abs_set_res(input, code, hidinput_calc_abs_res(field, code));
> }
>
> static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
> diff --git a/include/linux/hid.h b/include/linux/hid.h
> index 7e1f37d..9edb06c 100644
> --- a/include/linux/hid.h
> +++ b/include/linux/hid.h
> @@ -743,6 +743,7 @@ int hid_input_report(struct hid_device *, int type, u8 *, int, int);
> int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
> struct hid_field *hidinput_get_led_field(struct hid_device *hid);
> unsigned int hidinput_count_leds(struct hid_device *hid);
> +__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code);
> void hid_output_report(struct hid_report *report, __u8 *data);
> struct hid_device *hid_allocate_device(void);
> struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id);
> --
> 1.7.11.7
>
--
Jiri Kosina
SUSE Labs
next prev parent reply other threads:[~2012-11-13 7:45 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-07 16:37 [PATCH v3 00/13] Win 8 support for digitizers Benjamin Tissoires
2012-11-07 16:37 ` [PATCH v3 01/13] HID: hid-input: export hidinput_calc_abs_res Benjamin Tissoires
2012-11-13 7:45 ` Jiri Kosina [this message]
2012-11-07 16:37 ` [PATCH v3 02/13] HID: hid-input: round return value of hidinput_calc_abs_res Benjamin Tissoires
2012-11-13 7:44 ` Jiri Kosina
2012-11-07 16:37 ` [PATCH v3 03/13] HID: core: fix unit exponent parsing Benjamin Tissoires
2012-11-13 7:43 ` Jiri Kosina
2012-11-07 16:37 ` [PATCH v3 04/13] HID: hid-input: add usage_index in struct hid_usage Benjamin Tissoires
2012-11-13 7:44 ` Jiri Kosina
2012-11-13 15:38 ` Henrik Rydberg
2012-11-07 16:37 ` [PATCH v3 05/13] HID: hid-multitouch: support arrays for the split of the touches in a report Benjamin Tissoires
2012-11-13 15:44 ` Henrik Rydberg
2012-11-07 16:37 ` [PATCH v3 06/13] HID: hid-multitouch: get maxcontacts also from logical_max value Benjamin Tissoires
2012-11-07 16:37 ` [PATCH v3 07/13] HID: hid-multitouch: support T and C for win8 devices Benjamin Tissoires
2012-11-13 15:56 ` Henrik Rydberg
2012-11-07 16:37 ` [PATCH v3 08/13] HID: hid-multitouch: move ALWAYS_VALID quirk check Benjamin Tissoires
2012-11-13 15:57 ` Henrik Rydberg
2012-11-07 16:37 ` [PATCH v3 09/13] HID: hid-multitouch: add MT_QUIRK_IGNORE_DUPLICATES Benjamin Tissoires
2012-11-13 16:25 ` Henrik Rydberg
2012-11-07 16:37 ` [PATCH v3 10/13] HID: hid-multitouch: fix Win 8 protocol Benjamin Tissoires
2012-11-13 16:31 ` Henrik Rydberg
2012-11-07 16:37 ` [PATCH v3 11/13] HID: hid-multitouch: support for hovering devices Benjamin Tissoires
2012-11-13 16:42 ` Henrik Rydberg
2012-11-13 17:29 ` Benjamin Tissoires
2012-11-13 18:04 ` Henrik Rydberg
2012-11-13 18:08 ` Benjamin Tissoires
2012-11-13 18:55 ` Henrik Rydberg
2012-11-07 16:37 ` [PATCH v3 12/13] HID: introduce Scan Time Benjamin Tissoires
2012-11-09 8:45 ` Dmitry Torokhov
2012-11-13 14:25 ` Benjamin Tissoires
2012-11-13 17:15 ` Henrik Rydberg
2012-11-07 16:37 ` [PATCH v3 13/13] HID: hid-multitouch: forwards ABS_SCAN_TIME Benjamin Tissoires
2012-11-13 14:30 ` Benjamin Tissoires
2012-11-13 17:27 ` Henrik Rydberg
2012-11-13 17:45 ` Benjamin Tissoires
2012-11-13 18:28 ` Henrik Rydberg
2012-11-13 18:43 ` Henrik Rydberg
2012-11-13 7:47 ` [PATCH v3 00/13] Win 8 support for digitizers Jiri Kosina
2012-11-13 8:12 ` Benjamin Tissoires
2012-11-13 17:33 ` Henrik Rydberg
2012-11-13 17:52 ` Benjamin Tissoires
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