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Date: Thu, 27 Apr 2017 16:40:31 +0900
From: Masaki Ota <012nexus@...il.com>
To: benjamin.tissoires@...hat.com, jikos@...nel.org
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
masaki.ota@...alps.com
Subject: [PATCH 1/4] Replace Alps U1 Touchpad code
>From Masaki Ota <masaki.ota@...alps.com>
- Separate U1 device initialization from common initialization.
Signed-off-by: Masaki Ota <masaki.ota@...alps.com>
---
drivers/hid/hid-alps.c | 188 ++++++++++++++++++++++++++-----------------------
1 file changed, 99 insertions(+), 89 deletions(-)
diff --git a/drivers/hid/hid-alps.c b/drivers/hid/hid-alps.c
index ed9c0ea..984e452 100644
--- a/drivers/hid/hid-alps.c
+++ b/drivers/hid/hid-alps.c
@@ -55,24 +55,22 @@
#define MAX_TOUCHES 5
/**
- * struct u1_data
+ * struct u1_dev
*
* @input: pointer to the kernel input device
* @input2: pointer to the kernel input2 device
* @hdev: pointer to the struct hid_device
*
- * @dev_ctrl: device control parameter
* @dev_type: device type
- * @sen_line_num_x: number of sensor line of X
- * @sen_line_num_y: number of sensor line of Y
- * @pitch_x: sensor pitch of X
- * @pitch_y: sensor pitch of Y
- * @resolution: resolution
- * @btn_info: button information
+ * @max_fingers: total number of fingers
+ * @has_sp: boolean of sp existense
+ * @sp_btn_info: button information
* @x_active_len_mm: active area length of X (mm)
* @y_active_len_mm: active area length of Y (mm)
* @x_max: maximum x coordinate value
* @y_max: maximum y coordinate value
+ * @x_min: minimum x coordinate value
+ * @y_min: minimum y coordinate value
* @btn_cnt: number of buttons
* @sp_btn_cnt: number of stick buttons
*/
@@ -81,19 +79,15 @@ struct u1_dev {
struct input_dev *input2;
struct hid_device *hdev;
- u8 dev_ctrl;
- u8 dev_type;
- u8 sen_line_num_x;
- u8 sen_line_num_y;
- u8 pitch_x;
- u8 pitch_y;
- u8 resolution;
- u8 btn_info;
+ u8 max_fingers;
+ u8 has_sp;
u8 sp_btn_info;
u32 x_active_len_mm;
u32 y_active_len_mm;
u32 x_max;
u32 y_max;
+ u32 x_min;
+ u32 y_min;
u32 btn_cnt;
u32 sp_btn_cnt;
};
@@ -255,108 +249,149 @@ static int alps_post_resume(struct hid_device *hdev)
}
#endif /* CONFIG_PM */
-static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
+static int u1_init(struct hid_device *hdev, struct u1_dev *pri_data)
{
- struct u1_dev *data = hid_get_drvdata(hdev);
- struct input_dev *input = hi->input, *input2;
- struct u1_dev devInfo;
int ret;
- int res_x, res_y, i;
-
- data->input = input;
-
- hid_dbg(hdev, "Opening low level driver\n");
- ret = hid_hw_open(hdev);
- if (ret)
- return ret;
-
- /* Allow incoming hid reports */
- hid_device_io_start(hdev);
+ u8 tmp, dev_ctrl, sen_line_num_x, sen_line_num_y;
+ u8 pitch_x, pitch_y, resolution;
/* Device initialization */
ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
- &devInfo.dev_ctrl, 0, true);
+ &dev_ctrl, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret);
goto exit;
}
- devInfo.dev_ctrl &= ~U1_DISABLE_DEV;
- devInfo.dev_ctrl |= U1_TP_ABS_MODE;
+ dev_ctrl &= ~U1_DISABLE_DEV;
+ dev_ctrl |= U1_TP_ABS_MODE;
ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
- NULL, devInfo.dev_ctrl, false);
+ NULL, dev_ctrl, false);
if (ret < 0) {
dev_err(&hdev->dev, "failed to change TP mode (%d)\n", ret);
goto exit;
}
ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_X,
- &devInfo.sen_line_num_x, 0, true);
+ &sen_line_num_x, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_NUM_SENS_X (%d)\n", ret);
goto exit;
}
ret = u1_read_write_register(hdev, ADDRESS_U1_NUM_SENS_Y,
- &devInfo.sen_line_num_y, 0, true);
+ &sen_line_num_y, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_NUM_SENS_Y (%d)\n", ret);
goto exit;
}
ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_X,
- &devInfo.pitch_x, 0, true);
+ &pitch_x, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_PITCH_SENS_X (%d)\n", ret);
goto exit;
}
ret = u1_read_write_register(hdev, ADDRESS_U1_PITCH_SENS_Y,
- &devInfo.pitch_y, 0, true);
+ &pitch_y, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_PITCH_SENS_Y (%d)\n", ret);
goto exit;
}
ret = u1_read_write_register(hdev, ADDRESS_U1_RESO_DWN_ABS,
- &devInfo.resolution, 0, true);
+ &resolution, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret);
goto exit;
}
+ pri_data->x_active_len_mm =
+ (pitch_x * (sen_line_num_x - 1)) / 10;
+ pri_data->y_active_len_mm =
+ (pitch_y * (sen_line_num_y - 1)) / 10;
+
+ pri_data->x_max =
+ (resolution << 2) * (sen_line_num_x - 1);
+ pri_data->x_min = 1;
+ pri_data->y_max =
+ (resolution << 2) * (sen_line_num_y - 1);
+ pri_data->y_min = 1;
ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,
- &devInfo.btn_info, 0, true);
+ &tmp, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);
goto exit;
}
+ if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) {
+ pri_data->btn_cnt = (tmp & 0x0F);
+ } else {
+ /* Button pad */
+ pri_data->btn_cnt = 1;
+ }
+ pri_data->has_sp = 0;
/* Check StickPointer device */
ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,
- &devInfo.dev_type, 0, true);
+ &tmp, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret);
goto exit;
}
+ if (tmp & U1_DEVTYPE_SP_SUPPORT) {
+ dev_ctrl |= U1_SP_ABS_MODE;
+ ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
+ NULL, dev_ctrl, false);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);
+ goto exit;
+ }
+
+ ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN,
+ &pri_data->sp_btn_info, 0, true);
+ if (ret < 0) {
+ dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret);
+ goto exit;
+ }
+ pri_data->has_sp = 1;
+ }
+ pri_data->max_fingers = 5;
+exit:
+ return ret;
+}
+
+static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
+{
+ struct u1_dev *data = hid_get_drvdata(hdev);
+ struct input_dev *input = hi->input, *input2;
+ int ret;
+ int res_x, res_y, i;
- devInfo.x_active_len_mm =
- (devInfo.pitch_x * (devInfo.sen_line_num_x - 1)) / 10;
- devInfo.y_active_len_mm =
- (devInfo.pitch_y * (devInfo.sen_line_num_y - 1)) / 10;
+ data->input = input;
+
+ hid_dbg(hdev, "Opening low level driver\n");
+ ret = hid_hw_open(hdev);
+ if (ret)
+ return ret;
- devInfo.x_max =
- (devInfo.resolution << 2) * (devInfo.sen_line_num_x - 1);
- devInfo.y_max =
- (devInfo.resolution << 2) * (devInfo.sen_line_num_y - 1);
+ /* Allow incoming hid reports */
+ hid_device_io_start(hdev);
+
+ ret = u1_init(hdev, data);
+
+ if (ret)
+ goto exit;
__set_bit(EV_ABS, input->evbit);
- input_set_abs_params(input, ABS_MT_POSITION_X, 1, devInfo.x_max, 0, 0);
- input_set_abs_params(input, ABS_MT_POSITION_Y, 1, devInfo.y_max, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_X,
+ data->x_min, data->x_max, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y,
+ data->y_min, data->y_max, 0, 0);
- if (devInfo.x_active_len_mm && devInfo.y_active_len_mm) {
- res_x = (devInfo.x_max - 1) / devInfo.x_active_len_mm;
- res_y = (devInfo.y_max - 1) / devInfo.y_active_len_mm;
+ if (data->x_active_len_mm && data->y_active_len_mm) {
+ res_x = (data->x_max - 1) / data->x_active_len_mm;
+ res_y = (data->y_max - 1) / data->y_active_len_mm;
input_abs_set_res(input, ABS_MT_POSITION_X, res_x);
input_abs_set_res(input, ABS_MT_POSITION_Y, res_y);
@@ -364,49 +399,25 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
input_set_abs_params(input, ABS_MT_PRESSURE, 0, 64, 0, 0);
- input_mt_init_slots(input, MAX_TOUCHES, INPUT_MT_POINTER);
+ input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER);
__set_bit(EV_KEY, input->evbit);
- if ((devInfo.btn_info & 0x0F) == (devInfo.btn_info & 0xF0) >> 4) {
- devInfo.btn_cnt = (devInfo.btn_info & 0x0F);
- } else {
- /* Button pad */
- devInfo.btn_cnt = 1;
+
+ if (data->btn_cnt == 1)
__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
- }
- for (i = 0; i < devInfo.btn_cnt; i++)
+ for (i = 0; i < data->btn_cnt; i++)
__set_bit(BTN_LEFT + i, input->keybit);
-
/* Stick device initialization */
- if (devInfo.dev_type & U1_DEVTYPE_SP_SUPPORT) {
-
+ if (data->has_sp) {
input2 = input_allocate_device();
if (!input2) {
- ret = -ENOMEM;
- goto exit;
- }
-
- data->input2 = input2;
-
- devInfo.dev_ctrl |= U1_SP_ABS_MODE;
- ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
- NULL, devInfo.dev_ctrl, false);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);
- input_free_device(input2);
- goto exit;
- }
-
- ret = u1_read_write_register(hdev, ADDRESS_U1_SP_BTN,
- &devInfo.sp_btn_info, 0, true);
- if (ret < 0) {
- dev_err(&hdev->dev, "failed U1_SP_BTN (%d)\n", ret);
input_free_device(input2);
goto exit;
}
+ data->input2 = input2;
input2->phys = input->phys;
input2->name = "DualPoint Stick";
input2->id.bustype = BUS_I2C;
@@ -416,8 +427,8 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
input2->dev.parent = input->dev.parent;
__set_bit(EV_KEY, input2->evbit);
- devInfo.sp_btn_cnt = (devInfo.sp_btn_info & 0x0F);
- for (i = 0; i < devInfo.sp_btn_cnt; i++)
+ data->sp_btn_cnt = (data->sp_btn_info & 0x0F);
+ for (i = 0; i < data->sp_btn_cnt; i++)
__set_bit(BTN_LEFT + i, input2->keybit);
__set_bit(EV_REL, input2->evbit);
@@ -426,8 +437,7 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
__set_bit(INPUT_PROP_POINTER, input2->propbit);
__set_bit(INPUT_PROP_POINTING_STICK, input2->propbit);
- ret = input_register_device(data->input2);
- if (ret) {
+ if (input_register_device(data->input2)) {
input_free_device(input2);
goto exit;
}
--
2.7.4
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