[PATCH v4 11/24] hid: Port hid-holtekff to ff-memless-next

From: Michal MalÃ
Date: Sat Apr 26 2014 - 11:10:11 EST


Port hid-holtekff to ff-memless-next

Signed-off-by: Michal Malà <madcatxster@xxxxxxxxxxxxxxxxxx>
---
drivers/hid/Kconfig | 2 +-
drivers/hid/hid-holtekff.c | 47 +++++++++++++++++++++++++++++-----------------
2 files changed, 31 insertions(+), 18 deletions(-)

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 4c59a88..1749a4a 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -256,7 +256,7 @@ config HID_HOLTEK
config HOLTEK_FF
bool "Holtek On Line Grip force feedback support"
depends on HID_HOLTEK
- select INPUT_FF_MEMLESS
+ select INPUT_FF_MEMLESS_NEXT
---help---
Say Y here if you have a Holtek On Line Grip based game controller
and want to have force feedback support for it.
diff --git a/drivers/hid/hid-holtekff.c b/drivers/hid/hid-holtekff.c
index 9325545..9c6064d 100644
--- a/drivers/hid/hid-holtekff.c
+++ b/drivers/hid/hid-holtekff.c
@@ -27,9 +27,12 @@
#include <linux/input.h>
#include <linux/module.h>
#include <linux/slab.h>
+#include <linux/input/ff-memless-next.h>

#include "hid-ids.h"

+#define FF_UPDATE_RATE 50
+
#ifdef CONFIG_HOLTEK_FF

MODULE_LICENSE("GPL");
@@ -104,34 +107,44 @@ static void holtekff_send(struct holtekff_device *holtekff,
}

static int holtekff_play(struct input_dev *dev, void *data,
- struct ff_effect *effect)
+ const struct mlnx_effect_command *command)
{
struct hid_device *hid = input_get_drvdata(dev);
struct holtekff_device *holtekff = data;
+ const struct mlnx_rumble_force *rumble_force = &command->u.rumble_force;
int left, right;
/* effect type 1, length 65535 msec */
u8 buf[HOLTEKFF_MSG_LENGTH] =
{ 0x01, 0x01, 0xff, 0xff, 0x10, 0xe0, 0x00 };

- left = effect->u.rumble.strong_magnitude;
- right = effect->u.rumble.weak_magnitude;
- dbg_hid("called with 0x%04x 0x%04x\n", left, right);
+ switch (command->cmd) {
+ case MLNX_START_RUMBLE:
+ left = rumble_force->strong;
+ right = rumble_force->weak;
+ dbg_hid("called with 0x%04x 0x%04x\n", left, right);

- if (!left && !right) {
- holtekff_send(holtekff, hid, stop_all6);
- return 0;
- }
+ if (!left && !right) {
+ holtekff_send(holtekff, hid, stop_all6);
+ return 0;
+ }

- if (left)
- buf[1] |= 0x80;
- if (right)
- buf[1] |= 0x40;
+ if (left)
+ buf[1] |= 0x80;
+ if (right)
+ buf[1] |= 0x40;

- /* The device takes a single magnitude, so we just sum them up. */
- buf[6] = min(0xf, (left >> 12) + (right >> 12));
+ /* The device takes a single magnitude, so we just sum them up. */
+ buf[6] = min(0xf, (left >> 12) + (right >> 12));

- holtekff_send(holtekff, hid, buf);
- holtekff_send(holtekff, hid, start_effect_1);
+ holtekff_send(holtekff, hid, buf);
+ holtekff_send(holtekff, hid, start_effect_1);
+ return 0;
+ case MLNX_STOP_RUMBLE:
+ holtekff_send(holtekff, hid, stop_all6);
+ return 0;
+ default:
+ return -EINVAL;
+ }

return 0;
}
@@ -171,7 +184,7 @@ static int holtekff_init(struct hid_device *hid)
holtekff_send(holtekff, hid, stop_all4);
holtekff_send(holtekff, hid, stop_all6);

- error = input_ff_create_memless(dev, holtekff, holtekff_play);
+ error = input_ff_create_mlnx(dev, holtekff, holtekff_play, FF_UPDATE_RATE);
if (error) {
kfree(holtekff);
return error;
--
1.9.2

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