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HID: alps: Separate U1 device code 

Create 'static int u1_init()' and factor out U1 device initialization code from
main initialization and introduce per-device 'has_sp' flag.

[jkosina@suse.cz: rewrite changelog]
Signed-off-by: Masaki Ota <masaki.ota@jp.alps.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Masaki Ota 2017-10-06 11:53:14 +09:00 committed by Jiri Kosina
parent ce6abcf83b
commit 5d8c720d3b
1 changed files with 109 additions and 95 deletions
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204
drivers/hid/hid-alps.c
View File

@ -75,6 +75,7 @@
* @y_max: maximum y coordinate value
* @btn_cnt: number of buttons
* @sp_btn_cnt: number of stick buttons
* @has_sp: boolean of sp existense
*/
struct u1_dev {
struct input_dev *input;
@ -96,6 +97,7 @@ struct u1_dev {
u32 y_max;
u32 btn_cnt;
u32 sp_btn_cnt;
u8 has_sp;
};
static int u1_read_write_register(struct hid_device *hdev, u32 address,
@ -255,6 +257,109 @@ static int alps_post_resume(struct hid_device *hdev)
}
#endif /* CONFIG_PM */
static int u1_init(struct hid_device *hdev, struct u1_dev *pri_data)
{
int ret;
/* Device initialization */
ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
&pri_data->dev_ctrl, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret);
goto exit;
}
pri_data->dev_ctrl &= ~U1_DISABLE_DEV;
pri_data->dev_ctrl |= U1_TP_ABS_MODE;
ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
NULL, pri_data->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,
&pri_data->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,
&pri_data->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,
&pri_data->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,
&pri_data->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,
&pri_data->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 =
(pri_data->pitch_x * (pri_data->sen_line_num_x - 1)) / 10;
pri_data->y_active_len_mm =
(pri_data->pitch_y * (pri_data->sen_line_num_y - 1)) / 10;
pri_data->x_max =
(pri_data->resolution << 2) * (pri_data->sen_line_num_x - 1);
pri_data->y_max =
(pri_data->resolution << 2) * (pri_data->sen_line_num_y - 1);
ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,
&pri_data->btn_info, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);
goto exit;
}
pri_data->has_sp = 0;
/* Check StickPointer device */
ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,
&pri_data->dev_type, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret);
goto exit;
}
if (pri_data->dev_type & U1_DEVTYPE_SP_SUPPORT) {
pri_data->dev_ctrl |= U1_SP_ABS_MODE;
ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
NULL, pri_data->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;
}
exit:
return ret;
}
static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
{
struct u1_dev *data = hid_get_drvdata(hdev);
@ -272,82 +377,10 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
/* Allow incoming hid reports */
hid_device_io_start(hdev);
/* Device initialization */
ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
&data->dev_ctrl, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_DEV_CTRL_1 (%d)\n", ret);
ret = u1_init(hdev, data);
if (ret)
goto exit;
}
data->dev_ctrl &= ~U1_DISABLE_DEV;
data->dev_ctrl |= U1_TP_ABS_MODE;
ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
NULL, data->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,
&data->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,
&data->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,
&data->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,
&data->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,
&data->resolution, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_RESO_DWN_ABS (%d)\n", ret);
goto exit;
}
ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,
&data->btn_info, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);
goto exit;
}
/* Check StickPointer device */
ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,
&data->dev_type, 0, true);
if (ret < 0) {
dev_err(&hdev->dev, "failed U1_DEVICE_TYP (%d)\n", ret);
goto exit;
}
data->x_active_len_mm =
(data->pitch_x * (data->sen_line_num_x - 1)) / 10;
data->y_active_len_mm =
(data->pitch_y * (data->sen_line_num_y - 1)) / 10;
data->x_max =
(data->resolution << 2) * (data->sen_line_num_x - 1);
data->y_max =
(data->resolution << 2) * (data->sen_line_num_y - 1);
__set_bit(EV_ABS, input->evbit);
input_set_abs_params(input, ABS_MT_POSITION_X, 1, data->x_max, 0, 0);
@ -379,8 +412,7 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
/* Stick device initialization */
if (data->dev_type & U1_DEVTYPE_SP_SUPPORT) {
if (data->has_sp) {
input2 = input_allocate_device();
if (!input2) {
ret = -ENOMEM;
@ -388,24 +420,6 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
}
data->input2 = input2;
data->dev_ctrl |= U1_SP_ABS_MODE;
ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,
NULL, data->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,
&data->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;
}
input2->phys = input->phys;
input2->name = "DualPoint Stick";
input2->id.bustype = BUS_I2C;