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Commit 5992262d authored by Masaki Ota's avatar Masaki Ota Committed by Jiri Kosina
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HID: alps: remove variables local to u1_init() from the device struct 



Move dev_ctrl, dev_type, sen_line_num_x, sen_line_num_y, pitch_x, pitch_y,
resolution, btn_info from u1_dev structure to "u1_init()", because these
variables are only used in there.

[jkosina@suse.cz: rewrite changelog]
Signed-off-by: default avatarMasaki Ota <masaki.ota@jp.alps.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent c7083d3f

drivers/hid/hid-alps.c

+27 −40
Original line number Diff line number Diff line
@@ -61,14 +61,10 @@ 
 * @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
@@ -77,22 +73,14 @@ 
 * @y_min: minimum y coordinate value

 * @btn_cnt: number of buttons

 * @sp_btn_cnt: number of stick buttons

 * @has_sp: boolean of sp existense

 * @max_fingers: total number of fingers

 */

struct u1_dev {

	struct input_dev *input;

	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;
@@ -102,8 +90,6 @@ struct u1_dev { 
	u32	y_min;

	u32	btn_cnt;

	u32	sp_btn_cnt;

	u8	has_sp;

	u8	max_fingers;

};



static int u1_read_write_register(struct hid_device *hdev, u32 address,
@@ -266,78 +252,80 @@ static int alps_post_resume(struct hid_device *hdev) 
static int u1_init(struct hid_device *hdev, struct u1_dev *pri_data)

{

	int ret;

	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,

			&pri_data->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;

	}



	pri_data->dev_ctrl &= ~U1_DISABLE_DEV;

	pri_data->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, pri_data->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,

			&pri_data->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,

			&pri_data->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,

			&pri_data->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,

			&pri_data->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,

		&pri_data->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 =

		(pri_data->pitch_x * (pri_data->sen_line_num_x - 1)) / 10;

		(pitch_x * (sen_line_num_x - 1)) / 10;

	pri_data->y_active_len_mm =

		(pri_data->pitch_y * (pri_data->sen_line_num_y - 1)) / 10;

		(pitch_y * (sen_line_num_y - 1)) / 10;



	pri_data->x_max =

		(pri_data->resolution << 2) * (pri_data->sen_line_num_x - 1);

		(resolution << 2) * (sen_line_num_x - 1);

	pri_data->x_min = 1;

	pri_data->y_max =

		(pri_data->resolution << 2) * (pri_data->sen_line_num_y - 1);

		(resolution << 2) * (sen_line_num_y - 1);

	pri_data->y_min = 1;



	ret = u1_read_write_register(hdev, ADDRESS_U1_PAD_BTN,

			&pri_data->btn_info, 0, true);

			&tmp, 0, true);

	if (ret < 0) {

		dev_err(&hdev->dev, "failed U1_PAD_BTN (%d)\n", ret);

		goto exit;

	}

	if ((pri_data->btn_info & 0x0F) == (pri_data->btn_info & 0xF0) >> 4) {

		pri_data->btn_cnt = (pri_data->btn_info & 0x0F);

	if ((tmp & 0x0F) == (tmp & 0xF0) >> 4) {

		pri_data->btn_cnt = (tmp & 0x0F);

	} else {

		/* Button pad */

		pri_data->btn_cnt = 1;
@@ -346,16 +334,15 @@ static int u1_init(struct hid_device *hdev, struct u1_dev *pri_data) 
	pri_data->has_sp = 0;

	/* Check StickPointer device */

	ret = u1_read_write_register(hdev, ADDRESS_U1_DEVICE_TYP,

			&pri_data->dev_type, 0, true);

			&tmp, 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;

	if (tmp & U1_DEVTYPE_SP_SUPPORT) {

		dev_ctrl |= U1_SP_ABS_MODE;

		ret = u1_read_write_register(hdev, ADDRESS_U1_DEV_CTRL_1,

			NULL, pri_data->dev_ctrl, false);

			NULL, dev_ctrl, false);

		if (ret < 0) {

			dev_err(&hdev->dev, "failed SP mode (%d)\n", ret);

			goto exit;