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Commit 88dd4c27 authored by Mohan Pallaka's avatar Mohan Pallaka Committed by Sudhakar Manapati
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input: ft5x06_ts: Add firmware upgrade support for ft6x06 



Focaltech 6x06 controller series uses a different reset
register compared to earlier supported controllers. Use
appropriate reset registers based on controller's id.

  This patch is propagated from 3.4 kernel
    commit: ec271e44c89b0ea21102a5b51c6b8454e2295af0
    input: ft5x06_ts: Add firmware upgrade support for ft6x06

Change-Id: Ia72fa9c256f9e6e2db79388b0152f4d6724ec457
Signed-off-by: default avatarMohan Pallaka <mpallaka@codeaurora.org>
parent 4c142d16

drivers/input/touchscreen/ft5x06_ts.c

+32 −8
Original line number Diff line number Diff line
@@ -76,7 +76,8 @@ 
#define FT_PMODE_HIBERNATE	0x03

#define FT_FACTORYMODE_VALUE	0x40

#define FT_WORKMODE_VALUE	0x00

#define FT_RST_CMD_REG		0xFC

#define FT_RST_CMD_REG1		0xFC

#define FT_RST_CMD_REG2		0xBC

#define FT_READ_ID_REG		0x90

#define FT_ERASE_APP_REG	0x61

#define FT_ERASE_PANEL_REG	0x63
@@ -98,6 +99,7 @@ 


#define FT5316_ID		0x0A

#define FT5306I_ID		0x55

#define FT6X06_ID		0x06



#define FT_UPGRADE_AA		0xAA

#define FT_UPGRADE_55		0x55
@@ -134,6 +136,14 @@ 
#define FT6208_UPGRADE_READID_DELAY	10

#define FT6208_UPGRADE_EARSE_DELAY	2000



/*upgrade config of FT6x06*/

#define FT6X06_UPGRADE_AA_DELAY		100

#define FT6X06_UPGRADE_55_DELAY		30

#define FT6X06_UPGRADE_ID_1		0x79

#define FT6X06_UPGRADE_ID_2		0x08

#define FT6X06_UPGRADE_READID_DELAY	10

#define FT6X06_UPGRADE_EARSE_DELAY	2000



#define FT_UPGRADE_INFO(x, y)	do { \

		x->delay_55 = y##_UPGRADE_55_DELAY; \

		x->delay_aa = y##_UPGRADE_AA_DELAY; \
@@ -162,7 +172,7 @@ 
#define FT_FW_LAST_PKT		0x6ffa

#define FT_EARSE_DLY_MS		100



#define FT_UPGRADE_LOOP		3

#define FT_UPGRADE_LOOP		10

#define FT_CAL_START		0x04

#define FT_CAL_FIN		0x00

#define FT_CAL_STORE		0x05
@@ -580,6 +590,9 @@ static int ft5x06_ts_resume(struct device *dev) 
		msleep(FT_RESET_DLY);

		gpio_set_value_cansleep(data->pdata->reset_gpio, 1);

	}



	msleep(FT_STARTUP_DLY);



	enable_irq(data->client->irq);



	data->suspended = false;
@@ -679,6 +692,9 @@ static int ft5x06_get_upgrade_info(u8 family_id, struct upgrade_info *info) 
	case FT5316_ID:

		FT_UPGRADE_INFO(info, FT5316);

		break;

	case FT6X06_ID:

		FT_UPGRADE_INFO(info, FT6X06);

		break;

	default:

		return -EINVAL;

	}
@@ -691,6 +707,7 @@ static int ft5x06_fw_upgrade_start(struct i2c_client *client, 
{

	struct ft5x06_ts_data *ts_data = i2c_get_clientdata(client);

	struct upgrade_info info;

	u8 reset_reg;

	u8 w_buf[FT_MAX_WR_BUF] = {0}, r_buf[FT_MAX_RD_BUF] = {0};

	u8 pkt_buf[FT_FW_PKT_LEN + FT_FW_PKT_META_LEN];

	int rc, i, j, temp;
@@ -703,22 +720,27 @@ static int ft5x06_fw_upgrade_start(struct i2c_client *client, 
		return -EINVAL;

	}



	for (i = 0; i < FT_UPGRADE_LOOP; i++) {

		/* reset - write 0xaa and 0x55 to register 0xfc */

		ft5x0x_write_reg(client, FT_RST_CMD_REG, FT_UPGRADE_AA);

	for (i = 0, j = 0; i < FT_UPGRADE_LOOP; i++) {

		/* reset - write 0xaa and 0x55 to reset register */

		if (ts_data->family_id == FT6X06_ID)

			reset_reg = FT_RST_CMD_REG2;

		else

			reset_reg = FT_RST_CMD_REG1;



		ft5x0x_write_reg(client, reset_reg, FT_UPGRADE_AA);

		msleep(info.delay_aa);



		ft5x0x_write_reg(client, FT_RST_CMD_REG, FT_UPGRADE_55);

		ft5x0x_write_reg(client, reset_reg, FT_UPGRADE_55);

		msleep(info.delay_55);



		/* Enter upgrade mode */

		w_buf[0] = FT_UPGRADE_55;

		w_buf[1] = FT_UPGRADE_AA;

		do {

			i++;

			j++;

			rc = ft5x06_i2c_write(client, w_buf, 2);

			msleep(FT_RETRY_DLY);

		} while (rc <= 0 && i < FT_MAX_TRIES);

		} while (rc <= 0 && j < FT_MAX_TRIES);



		/* check READ_ID */

		msleep(info.delay_readid);
@@ -821,6 +843,8 @@ static int ft5x06_fw_upgrade_start(struct i2c_client *client, 
	ft5x06_i2c_write(client, w_buf, 1);

	msleep(FT_STARTUP_DLY);



	dev_info(&client->dev, "Firmware upgrade successful\n");



	return 0;

}