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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2021-02-23 06:35:15 +0100
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2021-02-23 06:35:15 +0100
commitcbecf716ca618fd44feda6bd9a64a8179d031fc5 (patch)
tree186c9f69f0d11f773253c440dac85087f67288b7 /drivers/input/touchscreen
parentInput: st1232 - add IDLE state as ready condition (diff)
parentInput: aiptek - convert sysfs sprintf/snprintf family to sysfs_emit (diff)
downloadlinux-cbecf716ca618fd44feda6bd9a64a8179d031fc5.tar.xz
linux-cbecf716ca618fd44feda6bd9a64a8179d031fc5.zip
Merge branch 'next' into for-linus
Prepare input updates for 5.12 merge window.
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r--drivers/input/touchscreen/Kconfig2
-rw-r--r--drivers/input/touchscreen/ads7846.c379
-rw-r--r--drivers/input/touchscreen/elants_i2c.c151
-rw-r--r--drivers/input/touchscreen/elo.c4
-rw-r--r--drivers/input/touchscreen/iqs5xx.c209
-rw-r--r--drivers/input/touchscreen/melfas_mip4.c8
-rw-r--r--drivers/input/touchscreen/raydium_i2c_ts.c3
-rw-r--r--drivers/input/touchscreen/s3c2410_ts.c37
-rw-r--r--drivers/input/touchscreen/stmpe-ts.c1
-rw-r--r--drivers/input/touchscreen/sur40.c1
-rw-r--r--drivers/input/touchscreen/surface3_spi.c2
-rw-r--r--drivers/input/touchscreen/usbtouchscreen.c3
-rw-r--r--drivers/input/touchscreen/zinitix.c4
13 files changed, 472 insertions, 332 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index cc18f54ea887..529614d364fe 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -608,7 +608,7 @@ config TOUCHSCREEN_MTOUCH
config TOUCHSCREEN_IMX6UL_TSC
tristate "Freescale i.MX6UL touchscreen controller"
- depends on (OF && GPIOLIB) || COMPILE_TEST
+ depends on ((OF && GPIOLIB) || COMPILE_TEST) && HAS_IOMEM
help
Say Y here if you have a Freescale i.MX6UL, and want to
use the internal touchscreen controller.
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index de058644ef8a..f113a27aeb1e 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -64,24 +64,13 @@
struct ads7846_buf {
u8 cmd;
- /*
- * This union is a temporary hack. The driver does an in-place
- * endianness conversion. This will be cleaned up in the next
- * patch.
- */
- union {
- __be16 data_be16;
- u16 data;
- };
+ __be16 data;
} __packed;
-
-struct ts_event {
- bool ignore;
- struct ads7846_buf x;
- struct ads7846_buf y;
- struct ads7846_buf z1;
- struct ads7846_buf z2;
+struct ads7846_buf_layout {
+ unsigned int offset;
+ unsigned int count;
+ unsigned int skip;
};
/*
@@ -90,12 +79,18 @@ struct ts_event {
* systems where main memory is not DMA-coherent (most non-x86 boards).
*/
struct ads7846_packet {
- struct ts_event tc;
- struct ads7846_buf read_x_cmd;
- struct ads7846_buf read_y_cmd;
- struct ads7846_buf read_z1_cmd;
- struct ads7846_buf read_z2_cmd;
+ unsigned int count;
+ unsigned int count_skip;
+ unsigned int cmds;
+ unsigned int last_cmd_idx;
+ struct ads7846_buf_layout l[5];
+ struct ads7846_buf *rx;
+ struct ads7846_buf *tx;
+
struct ads7846_buf pwrdown_cmd;
+
+ bool ignore;
+ u16 x, y, z1, z2;
};
struct ads7846 {
@@ -194,7 +189,6 @@ struct ads7846 {
#define READ_Y(vref) (READ_12BIT_DFR(y, 1, vref))
#define READ_Z1(vref) (READ_12BIT_DFR(z1, 1, vref))
#define READ_Z2(vref) (READ_12BIT_DFR(z2, 1, vref))
-
#define READ_X(vref) (READ_12BIT_DFR(x, 1, vref))
#define PWRDOWN (READ_12BIT_DFR(y, 0, 0)) /* LAST */
@@ -207,6 +201,21 @@ struct ads7846 {
#define REF_ON (READ_12BIT_DFR(x, 1, 1))
#define REF_OFF (READ_12BIT_DFR(y, 0, 0))
+/* Order commands in the most optimal way to reduce Vref switching and
+ * settling time:
+ * Measure: X; Vref: X+, X-; IN: Y+
+ * Measure: Y; Vref: Y+, Y-; IN: X+
+ * Measure: Z1; Vref: Y+, X-; IN: X+
+ * Measure: Z2; Vref: Y+, X-; IN: Y-
+ */
+enum ads7846_cmds {
+ ADS7846_X,
+ ADS7846_Y,
+ ADS7846_Z1,
+ ADS7846_Z2,
+ ADS7846_PWDOWN,
+};
+
static int get_pendown_state(struct ads7846 *ts)
{
if (ts->get_pendown_state)
@@ -689,26 +698,109 @@ static int ads7846_no_filter(void *ads, int data_idx, int *val)
return ADS7846_FILTER_OK;
}
-static int ads7846_get_value(struct ads7846 *ts, struct spi_message *m)
+static int ads7846_get_value(struct ads7846_buf *buf)
{
int value;
- struct spi_transfer *t =
- list_entry(m->transfers.prev, struct spi_transfer, transfer_list);
- struct ads7846_buf *buf = t->rx_buf;
- value = be16_to_cpup(&buf->data_be16);
+ value = be16_to_cpup(&buf->data);
/* enforce ADC output is 12 bits width */
return (value >> 3) & 0xfff;
}
-static void ads7846_update_value(struct spi_message *m, int val)
+static void ads7846_set_cmd_val(struct ads7846 *ts, enum ads7846_cmds cmd_idx,
+ u16 val)
+{
+ struct ads7846_packet *packet = ts->packet;
+
+ switch (cmd_idx) {
+ case ADS7846_Y:
+ packet->y = val;
+ break;
+ case ADS7846_X:
+ packet->x = val;
+ break;
+ case ADS7846_Z1:
+ packet->z1 = val;
+ break;
+ case ADS7846_Z2:
+ packet->z2 = val;
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ }
+}
+
+static u8 ads7846_get_cmd(enum ads7846_cmds cmd_idx, int vref)
+{
+ switch (cmd_idx) {
+ case ADS7846_Y:
+ return READ_Y(vref);
+ case ADS7846_X:
+ return READ_X(vref);
+
+ /* 7846 specific commands */
+ case ADS7846_Z1:
+ return READ_Z1(vref);
+ case ADS7846_Z2:
+ return READ_Z2(vref);
+ case ADS7846_PWDOWN:
+ return PWRDOWN;
+ default:
+ WARN_ON_ONCE(1);
+ }
+
+ return 0;
+}
+
+static bool ads7846_cmd_need_settle(enum ads7846_cmds cmd_idx)
+{
+ switch (cmd_idx) {
+ case ADS7846_X:
+ case ADS7846_Y:
+ case ADS7846_Z1:
+ case ADS7846_Z2:
+ return true;
+ case ADS7846_PWDOWN:
+ return false;
+ default:
+ WARN_ON_ONCE(1);
+ }
+
+ return false;
+}
+
+static int ads7846_filter(struct ads7846 *ts)
{
- struct spi_transfer *t =
- list_entry(m->transfers.prev, struct spi_transfer, transfer_list);
- struct ads7846_buf *buf = t->rx_buf;
+ struct ads7846_packet *packet = ts->packet;
+ int action;
+ int val;
+ unsigned int cmd_idx, b;
- buf->data = val;
+ packet->ignore = false;
+ for (cmd_idx = packet->last_cmd_idx; cmd_idx < packet->cmds - 1; cmd_idx++) {
+ struct ads7846_buf_layout *l = &packet->l[cmd_idx];
+
+ packet->last_cmd_idx = cmd_idx;
+
+ for (b = l->skip; b < l->count; b++) {
+ val = ads7846_get_value(&packet->rx[l->offset + b]);
+
+ action = ts->filter(ts->filter_data, cmd_idx, &val);
+ if (action == ADS7846_FILTER_REPEAT) {
+ if (b == l->count - 1)
+ return -EAGAIN;
+ } else if (action == ADS7846_FILTER_OK) {
+ ads7846_set_cmd_val(ts, cmd_idx, val);
+ break;
+ } else {
+ packet->ignore = true;
+ return 0;
+ }
+ }
+ }
+
+ return 0;
}
static void ads7846_read_state(struct ads7846 *ts)
@@ -716,52 +808,26 @@ static void ads7846_read_state(struct ads7846 *ts)
struct ads7846_packet *packet = ts->packet;
struct spi_message *m;
int msg_idx = 0;
- int val;
- int action;
int error;
- while (msg_idx < ts->msg_count) {
+ packet->last_cmd_idx = 0;
+ while (true) {
ts->wait_for_sync();
m = &ts->msg[msg_idx];
error = spi_sync(ts->spi, m);
if (error) {
dev_err(&ts->spi->dev, "spi_sync --> %d\n", error);
- packet->tc.ignore = true;
+ packet->ignore = true;
return;
}
- /*
- * Last message is power down request, no need to convert
- * or filter the value.
- */
- if (msg_idx < ts->msg_count - 1) {
-
- val = ads7846_get_value(ts, m);
-
- action = ts->filter(ts->filter_data, msg_idx, &val);
- switch (action) {
- case ADS7846_FILTER_REPEAT:
- continue;
-
- case ADS7846_FILTER_IGNORE:
- packet->tc.ignore = true;
- msg_idx = ts->msg_count - 1;
- continue;
-
- case ADS7846_FILTER_OK:
- ads7846_update_value(m, val);
- packet->tc.ignore = false;
- msg_idx++;
- break;
+ error = ads7846_filter(ts);
+ if (error)
+ continue;
- default:
- BUG();
- }
- } else {
- msg_idx++;
- }
+ return;
}
}
@@ -771,19 +837,14 @@ static void ads7846_report_state(struct ads7846 *ts)
unsigned int Rt;
u16 x, y, z1, z2;
- /*
- * ads7846_get_value() does in-place conversion (including byte swap)
- * from on-the-wire format as part of debouncing to get stable
- * readings.
- */
- x = packet->tc.x.data;
- y = packet->tc.y.data;
+ x = packet->x;
+ y = packet->y;
if (ts->model == 7845) {
z1 = 0;
z2 = 0;
} else {
- z1 = packet->tc.z1.data;
- z2 = packet->tc.z2.data;
+ z1 = packet->z1;
+ z2 = packet->z2;
}
/* range filtering */
@@ -816,9 +877,9 @@ static void ads7846_report_state(struct ads7846 *ts)
* the maximum. Don't report it to user space, repeat at least
* once more the measurement
*/
- if (packet->tc.ignore || Rt > ts->pressure_max) {
+ if (packet->ignore || Rt > ts->pressure_max) {
dev_vdbg(&ts->spi->dev, "ignored %d pressure %d\n",
- packet->tc.ignore, Rt);
+ packet->ignore, Rt);
return;
}
@@ -979,13 +1040,59 @@ static int ads7846_setup_pendown(struct spi_device *spi,
* Set up the transfers to read touchscreen state; this assumes we
* use formula #2 for pressure, not #3.
*/
-static void ads7846_setup_spi_msg(struct ads7846 *ts,
+static int ads7846_setup_spi_msg(struct ads7846 *ts,
const struct ads7846_platform_data *pdata)
{
struct spi_message *m = &ts->msg[0];
struct spi_transfer *x = ts->xfer;
struct ads7846_packet *packet = ts->packet;
int vref = pdata->keep_vref_on;
+ unsigned int count, offset = 0;
+ unsigned int cmd_idx, b;
+ unsigned long time;
+ size_t size = 0;
+
+ /* time per bit */
+ time = NSEC_PER_SEC / ts->spi->max_speed_hz;
+
+ count = pdata->settle_delay_usecs * NSEC_PER_USEC / time;
+ packet->count_skip = DIV_ROUND_UP(count, 24);
+
+ if (ts->debounce_max && ts->debounce_rep)
+ /* ads7846_debounce_filter() is making ts->debounce_rep + 2
+ * reads. So we need to get all samples for normal case. */
+ packet->count = ts->debounce_rep + 2;
+ else
+ packet->count = 1;
+
+ if (ts->model == 7846)
+ packet->cmds = 5; /* x, y, z1, z2, pwdown */
+ else
+ packet->cmds = 3; /* x, y, pwdown */
+
+ for (cmd_idx = 0; cmd_idx < packet->cmds; cmd_idx++) {
+ struct ads7846_buf_layout *l = &packet->l[cmd_idx];
+ unsigned int max_count;
+
+ if (ads7846_cmd_need_settle(cmd_idx))
+ max_count = packet->count + packet->count_skip;
+ else
+ max_count = packet->count;
+
+ l->offset = offset;
+ offset += max_count;
+ l->count = max_count;
+ l->skip = packet->count_skip;
+ size += sizeof(*packet->tx) * max_count;
+ }
+
+ packet->tx = devm_kzalloc(&ts->spi->dev, size, GFP_KERNEL);
+ if (!packet->tx)
+ return -ENOMEM;
+
+ packet->rx = devm_kzalloc(&ts->spi->dev, size, GFP_KERNEL);
+ if (!packet->rx)
+ return -ENOMEM;
if (ts->model == 7873) {
/*
@@ -1001,117 +1108,20 @@ static void ads7846_setup_spi_msg(struct ads7846 *ts,
spi_message_init(m);
m->context = ts;
- packet->read_y_cmd.cmd = READ_Y(vref);
- x->tx_buf = &packet->read_y_cmd;
- x->rx_buf = &packet->tc.y;
- x->len = 3;
- spi_message_add_tail(x, m);
+ for (cmd_idx = 0; cmd_idx < packet->cmds; cmd_idx++) {
+ struct ads7846_buf_layout *l = &packet->l[cmd_idx];
+ u8 cmd = ads7846_get_cmd(cmd_idx, vref);
- /*
- * The first sample after switching drivers can be low quality;
- * optionally discard it, using a second one after the signals
- * have had enough time to stabilize.
- */
- if (pdata->settle_delay_usecs) {
- x->delay.value = pdata->settle_delay_usecs;
- x->delay.unit = SPI_DELAY_UNIT_USECS;
- x++;
-
- x->tx_buf = &packet->read_y_cmd;
- x->rx_buf = &packet->tc.y;
- x->len = 3;
- spi_message_add_tail(x, m);
+ for (b = 0; b < l->count; b++)
+ packet->tx[l->offset + b].cmd = cmd;
}
- ts->msg_count++;
- m++;
- spi_message_init(m);
- m->context = ts;
-
- /* turn y- off, x+ on, then leave in lowpower */
- x++;
- packet->read_x_cmd.cmd = READ_X(vref);
- x->tx_buf = &packet->read_x_cmd;
- x->rx_buf = &packet->tc.x;
- x->len = 3;
+ x->tx_buf = packet->tx;
+ x->rx_buf = packet->rx;
+ x->len = size;
spi_message_add_tail(x, m);
- /* ... maybe discard first sample ... */
- if (pdata->settle_delay_usecs) {
- x->delay.value = pdata->settle_delay_usecs;
- x->delay.unit = SPI_DELAY_UNIT_USECS;
-
- x++;
- x->tx_buf = &packet->read_x_cmd;
- x->rx_buf = &packet->tc.x;
- x->len = 3;
- spi_message_add_tail(x, m);
- }
-
- /* turn y+ off, x- on; we'll use formula #2 */
- if (ts->model == 7846) {
- ts->msg_count++;
- m++;
- spi_message_init(m);
- m->context = ts;
-
- x++;
- packet->read_z1_cmd.cmd = READ_Z1(vref);
- x->tx_buf = &packet->read_z1_cmd;
- x->rx_buf = &packet->tc.z1;
- x->len = 3;
- spi_message_add_tail(x, m);
-
- /* ... maybe discard first sample ... */
- if (pdata->settle_delay_usecs) {
- x->delay.value = pdata->settle_delay_usecs;
- x->delay.unit = SPI_DELAY_UNIT_USECS;
-
- x++;
- x->tx_buf = &packet->read_z1_cmd;
- x->rx_buf = &packet->tc.z1;
- x->len = 3;
- spi_message_add_tail(x, m);
- }
-
- ts->msg_count++;
- m++;
- spi_message_init(m);
- m->context = ts;
-
- x++;
- packet->read_z2_cmd.cmd = READ_Z2(vref);
- x->tx_buf = &packet->read_z2_cmd;
- x->rx_buf = &packet->tc.z2;
- x->len = 3;
- spi_message_add_tail(x, m);
-
- /* ... maybe discard first sample ... */
- if (pdata->settle_delay_usecs) {
- x->delay.value = pdata->settle_delay_usecs;
- x->delay.unit = SPI_DELAY_UNIT_USECS;
-
- x++;
- x->tx_buf = &packet->read_z2_cmd;
- x->rx_buf = &packet->tc.z2;
- x->len = 3;
- spi_message_add_tail(x, m);
- }
- }
-
- /* power down */
- ts->msg_count++;
- m++;
- spi_message_init(m);
- m->context = ts;
-
- x++;
- packet->pwrdown_cmd.cmd = PWRDOWN;
- x->tx_buf = &packet->pwrdown_cmd;
- x->len = 3;
-
- CS_CHANGE(*x);
- spi_message_add_tail(x, m);
+ return 0;
}
#ifdef CONFIG_OF
@@ -1229,7 +1239,8 @@ static int ads7846_probe(struct spi_device *spi)
* may not. So we stick to very-portable 8 bit words, both RX and TX.
*/
spi->bits_per_word = 8;
- spi->mode = SPI_MODE_0;
+ spi->mode &= ~SPI_MODE_X_MASK;
+ spi->mode |= SPI_MODE_0;
err = spi_setup(spi);
if (err < 0)
return err;
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c
index d51cb910fba1..4c2b579f6c8b 100644
--- a/drivers/input/touchscreen/elants_i2c.c
+++ b/drivers/input/touchscreen/elants_i2c.c
@@ -56,6 +56,7 @@
#define QUEUE_HEADER_SINGLE 0x62
#define QUEUE_HEADER_NORMAL 0X63
#define QUEUE_HEADER_WAIT 0x64
+#define QUEUE_HEADER_NORMAL2 0x66
/* Command header definition */
#define CMD_HEADER_WRITE 0x54
@@ -69,6 +70,7 @@
#define CMD_HEADER_REK 0x66
/* FW position data */
+#define PACKET_SIZE_OLD 40
#define PACKET_SIZE 55
#define MAX_CONTACT_NUM 10
#define FW_POS_HEADER 0
@@ -90,6 +92,8 @@
/* FW read command, 0x53 0x?? 0x0, 0x01 */
#define E_ELAN_INFO_FW_VER 0x00
#define E_ELAN_INFO_BC_VER 0x10
+#define E_ELAN_INFO_X_RES 0x60
+#define E_ELAN_INFO_Y_RES 0x63
#define E_ELAN_INFO_REK 0xD0
#define E_ELAN_INFO_TEST_VER 0xE0
#define E_ELAN_INFO_FW_ID 0xF0
@@ -112,6 +116,11 @@
#define ELAN_POWERON_DELAY_USEC 500
#define ELAN_RESET_DELAY_MSEC 20
+enum elants_chip_id {
+ EKTH3500,
+ EKTF3624,
+};
+
enum elants_state {
ELAN_STATE_NORMAL,
ELAN_WAIT_QUEUE_HEADER,
@@ -143,9 +152,12 @@ struct elants_data {
unsigned int y_res;
unsigned int x_max;
unsigned int y_max;
+ unsigned int phy_x;
+ unsigned int phy_y;
struct touchscreen_properties prop;
enum elants_state state;
+ enum elants_chip_id chip_id;
enum elants_iap_mode iap_mode;
/* Guards against concurrent access to the device via sysfs */
@@ -433,7 +445,51 @@ static int elants_i2c_query_bc_version(struct elants_data *ts)
return 0;
}
-static int elants_i2c_query_ts_info(struct elants_data *ts)
+static int elants_i2c_query_ts_info_ektf(struct elants_data *ts)
+{
+ struct i2c_client *client = ts->client;
+ int error;
+ u8 resp[4];
+ u16 phy_x, phy_y;
+ const u8 get_xres_cmd[] = {
+ CMD_HEADER_READ, E_ELAN_INFO_X_RES, 0x00, 0x00
+ };
+ const u8 get_yres_cmd[] = {
+ CMD_HEADER_READ, E_ELAN_INFO_Y_RES, 0x00, 0x00
+ };
+
+ /* Get X/Y size in mm */
+ error = elants_i2c_execute_command(client, get_xres_cmd,
+ sizeof(get_xres_cmd),
+ resp, sizeof(resp), 1,
+ "get X size");
+ if (error)
+ return error;
+
+ phy_x = resp[2] | ((resp[3] & 0xF0) << 4);
+
+ error = elants_i2c_execute_command(client, get_yres_cmd,
+ sizeof(get_yres_cmd),
+ resp, sizeof(resp), 1,
+ "get Y size");
+ if (error)
+ return error;
+
+ phy_y = resp[2] | ((resp[3] & 0xF0) << 4);
+
+ dev_dbg(&client->dev, "phy_x=%d, phy_y=%d\n", phy_x, phy_y);
+
+ ts->phy_x = phy_x;
+ ts->phy_y = phy_y;
+
+ /* eKTF doesn't report max size, set it to default values */
+ ts->x_max = 2240 - 1;
+ ts->y_max = 1408 - 1;
+
+ return 0;
+}
+
+static int elants_i2c_query_ts_info_ekth(struct elants_data *ts)
{
struct i2c_client *client = ts->client;
int error;
@@ -508,6 +564,8 @@ static int elants_i2c_query_ts_info(struct elants_data *ts)
ts->x_res = DIV_ROUND_CLOSEST(ts->x_max, phy_x);
ts->y_max = ELAN_TS_RESOLUTION(cols, osr);
ts->y_res = DIV_ROUND_CLOSEST(ts->y_max, phy_y);
+ ts->phy_x = phy_x;
+ ts->phy_y = phy_y;
}
return 0;
@@ -587,8 +645,19 @@ static int elants_i2c_initialize(struct elants_data *ts)
error = elants_i2c_query_fw_version(ts);
if (!error)
error = elants_i2c_query_test_version(ts);
- if (!error)
- error = elants_i2c_query_ts_info(ts);
+
+ switch (ts->chip_id) {
+ case EKTH3500:
+ if (!error)
+ error = elants_i2c_query_ts_info_ekth(ts);
+ break;
+ case EKTF3624:
+ if (!error)
+ error = elants_i2c_query_ts_info_ektf(ts);
+ break;
+ default:
+ BUG();
+ }
if (error)
ts->iap_mode = ELAN_IAP_RECOVERY;
@@ -853,7 +922,8 @@ out:
* Event reporting.
*/
-static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf)
+static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf,
+ size_t packet_size)
{
struct input_dev *input = ts->input;
unsigned int n_fingers;
@@ -880,8 +950,24 @@ static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf)
pos = &buf[FW_POS_XY + i * 3];
x = (((u16)pos[0] & 0xf0) << 4) | pos[1];
y = (((u16)pos[0] & 0x0f) << 8) | pos[2];
- p = buf[FW_POS_PRESSURE + i];
- w = buf[FW_POS_WIDTH + i];
+
+ /*
+ * eKTF3624 may have use "old" touch-report format,
+ * depending on a device and TS firmware version.
+ * For example, ASUS Transformer devices use the "old"
+ * format, while ASUS Nexus 7 uses the "new" formant.
+ */
+ if (packet_size == PACKET_SIZE_OLD &&
+ ts->chip_id == EKTF3624) {
+ w = buf[FW_POS_WIDTH + i / 2];
+ w >>= 4 * (~i & 1);
+ w |= w << 4;
+ w |= !w;
+ p = w;
+ } else {
+ p = buf[FW_POS_PRESSURE + i];
+ w = buf[FW_POS_WIDTH + i];
+ }
dev_dbg(&ts->client->dev, "i=%d x=%d y=%d p=%d w=%d\n",
i, x, y, p, w);
@@ -913,7 +999,8 @@ static u8 elants_i2c_calculate_checksum(u8 *buf)
return checksum;
}
-static void elants_i2c_event(struct elants_data *ts, u8 *buf)
+static void elants_i2c_event(struct elants_data *ts, u8 *buf,
+ size_t packet_size)
{
u8 checksum = elants_i2c_calculate_checksum(buf);
@@ -927,7 +1014,7 @@ static void elants_i2c_event(struct elants_data *ts, u8 *buf)
"%s: unknown packet type: %02x\n",
__func__, buf[FW_POS_HEADER]);
else
- elants_i2c_mt_event(ts, buf);
+ elants_i2c_mt_event(ts, buf, packet_size);
}
static irqreturn_t elants_i2c_irq(int irq, void *_dev)
@@ -970,7 +1057,6 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
switch (ts->buf[FW_HDR_TYPE]) {
case CMD_HEADER_HELLO:
case CMD_HEADER_RESP:
- case CMD_HEADER_REK:
break;
case QUEUE_HEADER_WAIT:
@@ -985,9 +1071,24 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
break;
case QUEUE_HEADER_SINGLE:
- elants_i2c_event(ts, &ts->buf[HEADER_SIZE]);
+ elants_i2c_event(ts, &ts->buf[HEADER_SIZE],
+ ts->buf[FW_HDR_LENGTH]);
break;
+ case QUEUE_HEADER_NORMAL2: /* CMD_HEADER_REK */
+ /*
+ * Depending on firmware version, eKTF3624 touchscreens
+ * may utilize one of these opcodes for the touch events:
+ * 0x63 (NORMAL) and 0x66 (NORMAL2). The 0x63 is used by
+ * older firmware version and differs from 0x66 such that
+ * touch pressure value needs to be adjusted. The 0x66
+ * opcode of newer firmware is equal to 0x63 of eKTH3500.
+ */
+ if (ts->chip_id != EKTF3624)
+ break;
+
+ fallthrough;
+
case QUEUE_HEADER_NORMAL:
report_count = ts->buf[FW_HDR_COUNT];
if (report_count == 0 || report_count > 3) {
@@ -998,7 +1099,12 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
}
report_len = ts->buf[FW_HDR_LENGTH] / report_count;
- if (report_len != PACKET_SIZE) {
+
+ if (report_len == PACKET_SIZE_OLD &&
+ ts->chip_id == EKTF3624) {
+ dev_dbg_once(&client->dev,
+ "using old report format\n");
+ } else if (report_len != PACKET_SIZE) {
dev_err(&client->dev,
"mismatching report length: %*ph\n",
HEADER_SIZE, ts->buf);
@@ -1007,8 +1113,8 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev)
for (i = 0; i < report_count; i++) {
u8 *buf = ts->buf + HEADER_SIZE +
- i * PACKET_SIZE;
- elants_i2c_event(ts, buf);
+ i * report_len;
+ elants_i2c_event(ts, buf, report_len);
}
break;
@@ -1250,6 +1356,7 @@ static int elants_i2c_probe(struct i2c_client *client,
init_completion(&ts->cmd_done);
ts->client = client;
+ ts->chip_id = (enum elants_chip_id)id->driver_data;
i2c_set_clientdata(client, ts);
ts->vcc33 = devm_regulator_get(&client->dev, "vcc33");
@@ -1331,13 +1438,20 @@ static int elants_i2c_probe(struct i2c_client *client,
input_set_abs_params(ts->input, ABS_MT_PRESSURE, 0, 255, 0, 0);
input_set_abs_params(ts->input, ABS_MT_TOOL_TYPE,
0, MT_TOOL_PALM, 0, 0);
+
+ touchscreen_parse_properties(ts->input, true, &ts->prop);
+
+ if (ts->chip_id == EKTF3624) {
+ /* calculate resolution from size */
+ ts->x_res = DIV_ROUND_CLOSEST(ts->prop.max_x, ts->phy_x);
+ ts->y_res = DIV_ROUND_CLOSEST(ts->prop.max_y, ts->phy_y);
+ }
+
input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->x_res);
input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->y_res);
if (ts->major_res > 0)
input_abs_set_res(ts->input, ABS_MT_TOUCH_MAJOR, ts->major_res);
- touchscreen_parse_properties(ts->input, true, &ts->prop);
-
error = input_mt_init_slots(ts->input, MAX_CONTACT_NUM,
INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
if (error) {
@@ -1466,14 +1580,16 @@ static SIMPLE_DEV_PM_OPS(elants_i2c_pm_ops,
elants_i2c_suspend, elants_i2c_resume);
static const struct i2c_device_id elants_i2c_id[] = {
- { DEVICE_NAME, 0 },
+ { DEVICE_NAME, EKTH3500 },
+ { "ekth3500", EKTH3500 },
+ { "ektf3624", EKTF3624 },
{ }
};
MODULE_DEVICE_TABLE(i2c, elants_i2c_id);
#ifdef CONFIG_ACPI
static const struct acpi_device_id elants_acpi_id[] = {
- { "ELAN0001", 0 },
+ { "ELAN0001", EKTH3500 },
{ }
};
MODULE_DEVICE_TABLE(acpi, elants_acpi_id);
@@ -1482,6 +1598,7 @@ MODULE_DEVICE_TABLE(acpi, elants_acpi_id);
#ifdef CONFIG_OF
static const struct of_device_id elants_of_match[] = {
{ .compatible = "elan,ekth3500" },
+ { .compatible = "elan,ektf3624" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, elants_of_match);
diff --git a/drivers/input/touchscreen/elo.c b/drivers/input/touchscreen/elo.c
index e0bacd34866a..96173232e53f 100644
--- a/drivers/input/touchscreen/elo.c
+++ b/drivers/input/touchscreen/elo.c
@@ -341,8 +341,10 @@ static int elo_connect(struct serio *serio, struct serio_driver *drv)
switch (elo->id) {
case 0: /* 10-byte protocol */
- if (elo_setup_10(elo))
+ if (elo_setup_10(elo)) {
+ err = -EIO;
goto fail3;
+ }
break;
diff --git a/drivers/input/touchscreen/iqs5xx.c b/drivers/input/touchscreen/iqs5xx.c
index 4fd21bc3ce0f..54f30038dca4 100644
--- a/drivers/input/touchscreen/iqs5xx.c
+++ b/drivers/input/touchscreen/iqs5xx.c
@@ -2,8 +2,7 @@
/*
* Azoteq IQS550/572/525 Trackpad/Touchscreen Controller
*
- * Copyright (C) 2018
- * Author: Jeff LaBundy <jeff@labundy.com>
+ * Copyright (C) 2018 Jeff LaBundy <jeff@labundy.com>
*
* These devices require firmware exported from a PC-based configuration tool
* made available by the vendor. Firmware files may be pushed to the device's
@@ -12,6 +11,7 @@
* Link to PC-based configuration tool and data sheet: http://www.azoteq.com/
*/
+#include <linux/bits.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/err.h>
@@ -30,9 +30,9 @@
#define IQS5XX_FW_FILE_LEN 64
#define IQS5XX_NUM_RETRIES 10
-#define IQS5XX_NUM_POINTS 256
#define IQS5XX_NUM_CONTACTS 5
#define IQS5XX_WR_BYTES_MAX 2
+#define IQS5XX_XY_RES_MAX 0xFFFE
#define IQS5XX_PROD_NUM_IQS550 40
#define IQS5XX_PROD_NUM_IQS572 58
@@ -41,28 +41,27 @@
#define IQS5XX_PROJ_NUM_B000 15
#define IQS5XX_MAJOR_VER_MIN 2
-#define IQS5XX_RESUME 0x00
-#define IQS5XX_SUSPEND 0x01
+#define IQS5XX_SHOW_RESET BIT(7)
+#define IQS5XX_ACK_RESET BIT(7)
-#define IQS5XX_SW_INPUT_EVENT 0x10
-#define IQS5XX_SETUP_COMPLETE 0x40
-#define IQS5XX_EVENT_MODE 0x01
-#define IQS5XX_TP_EVENT 0x04
+#define IQS5XX_SUSPEND BIT(0)
+#define IQS5XX_RESUME 0
-#define IQS5XX_FLIP_X 0x01
-#define IQS5XX_FLIP_Y 0x02
-#define IQS5XX_SWITCH_XY_AXIS 0x04
+#define IQS5XX_SETUP_COMPLETE BIT(6)
+#define IQS5XX_WDT BIT(5)
+#define IQS5XX_ALP_REATI BIT(3)
+#define IQS5XX_REATI BIT(2)
+
+#define IQS5XX_TP_EVENT BIT(2)
+#define IQS5XX_EVENT_MODE BIT(0)
#define IQS5XX_PROD_NUM 0x0000
-#define IQS5XX_ABS_X 0x0016
-#define IQS5XX_ABS_Y 0x0018
+#define IQS5XX_SYS_INFO0 0x000F
+#define IQS5XX_SYS_INFO1 0x0010
#define IQS5XX_SYS_CTRL0 0x0431
#define IQS5XX_SYS_CTRL1 0x0432
#define IQS5XX_SYS_CFG0 0x058E
#define IQS5XX_SYS_CFG1 0x058F
-#define IQS5XX_TOTAL_RX 0x063D
-#define IQS5XX_TOTAL_TX 0x063E
-#define IQS5XX_XY_CFG0 0x0669
#define IQS5XX_X_RES 0x066E
#define IQS5XX_Y_RES 0x0670
#define IQS5XX_CHKSM 0x83C0
@@ -99,6 +98,7 @@ struct iqs5xx_private {
struct i2c_client *client;
struct input_dev *input;
struct gpio_desc *reset_gpio;
+ struct touchscreen_properties prop;
struct mutex lock;
u8 bl_status;
};
@@ -126,6 +126,14 @@ struct iqs5xx_touch_data {
u8 area;
} __packed;
+struct iqs5xx_status {
+ u8 sys_info[2];
+ u8 num_active;
+ __be16 rel_x;
+ __be16 rel_y;
+ struct iqs5xx_touch_data touch_data[IQS5XX_NUM_CONTACTS];
+} __packed;
+
static int iqs5xx_read_burst(struct i2c_client *client,
u16 reg, void *val, u16 len)
{
@@ -182,11 +190,6 @@ static int iqs5xx_read_word(struct i2c_client *client, u16 reg, u16 *val)
return 0;
}
-static int iqs5xx_read_byte(struct i2c_client *client, u16 reg, u8 *val)
-{
- return iqs5xx_read_burst(client, reg, val, sizeof(*val));
-}
-
static int iqs5xx_write_burst(struct i2c_client *client,
u16 reg, const void *val, u16 len)
{
@@ -337,11 +340,16 @@ static int iqs5xx_bl_open(struct i2c_client *client)
*/
for (i = 0; i < IQS5XX_BL_ATTEMPTS; i++) {
iqs5xx_reset(client);
+ usleep_range(350, 400);
for (j = 0; j < IQS5XX_NUM_RETRIES; j++) {
error = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_VER, 0);
- if (!error || error == -EINVAL)
- return error;
+ if (!error)
+ usleep_range(10000, 10100);
+ else if (error != -EINVAL)
+ continue;
+
+ return error;
}
}
@@ -481,12 +489,10 @@ static void iqs5xx_close(struct input_dev *input)
static int iqs5xx_axis_init(struct i2c_client *client)
{
struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client);
- struct touchscreen_properties prop;
+ struct touchscreen_properties *prop = &iqs5xx->prop;
struct input_dev *input;
+ u16 max_x, max_y;
int error;
- u16 max_x, max_x_hw;
- u16 max_y, max_y_hw;
- u8 val;
if (!iqs5xx->input) {
input = devm_input_allocate_device(&client->dev);
@@ -506,89 +512,39 @@ static int iqs5xx_axis_init(struct i2c_client *client)
iqs5xx->input = input;
}
- touchscreen_parse_properties(iqs5xx->input, true, &prop);
-
- error = iqs5xx_read_byte(client, IQS5XX_TOTAL_RX, &val);
- if (error)
- return error;
- max_x_hw = (val - 1) * IQS5XX_NUM_POINTS;
-
- error = iqs5xx_read_byte(client, IQS5XX_TOTAL_TX, &val);
+ error = iqs5xx_read_word(client, IQS5XX_X_RES, &max_x);
if (error)
return error;
- max_y_hw = (val - 1) * IQS5XX_NUM_POINTS;
- error = iqs5xx_read_byte(client, IQS5XX_XY_CFG0, &val);
+ error = iqs5xx_read_word(client, IQS5XX_Y_RES, &max_y);
if (error)
return error;
- if (val & IQS5XX_SWITCH_XY_AXIS)
- swap(max_x_hw, max_y_hw);
+ input_abs_set_max(iqs5xx->input, ABS_MT_POSITION_X, max_x);
+ input_abs_set_max(iqs5xx->input, ABS_MT_POSITION_Y, max_y);
- if (prop.swap_x_y)
- val ^= IQS5XX_SWITCH_XY_AXIS;
-
- if (prop.invert_x)
- val ^= prop.swap_x_y ? IQS5XX_FLIP_Y : IQS5XX_FLIP_X;
-
- if (prop.invert_y)
- val ^= prop.swap_x_y ? IQS5XX_FLIP_X : IQS5XX_FLIP_Y;
-
- error = iqs5xx_write_byte(client, IQS5XX_XY_CFG0, val);
- if (error)
- return error;
+ touchscreen_parse_properties(iqs5xx->input, true, prop);
- if (prop.max_x > max_x_hw) {
+ if (prop->max_x > IQS5XX_XY_RES_MAX) {
dev_err(&client->dev, "Invalid maximum x-coordinate: %u > %u\n",
- prop.max_x, max_x_hw);
+ prop->max_x, IQS5XX_XY_RES_MAX);
return -EINVAL;
- } else if (prop.max_x == 0) {
- error = iqs5xx_read_word(client, IQS5XX_X_RES, &max_x);
+ } else if (prop->max_x != max_x) {
+ error = iqs5xx_write_word(client, IQS5XX_X_RES, prop->max_x);
if (error)
return error;
-
- input_abs_set_max(iqs5xx->input,
- prop.swap_x_y ? ABS_MT_POSITION_Y :
- ABS_MT_POSITION_X,
- max_x);
- } else {
- max_x = (u16)prop.max_x;
}
- if (prop.max_y > max_y_hw) {
+ if (prop->max_y > IQS5XX_XY_RES_MAX) {
dev_err(&client->dev, "Invalid maximum y-coordinate: %u > %u\n",
- prop.max_y, max_y_hw);
+ prop->max_y, IQS5XX_XY_RES_MAX);
return -EINVAL;
- } else if (prop.max_y == 0) {
- error = iqs5xx_read_word(client, IQS5XX_Y_RES, &max_y);
+ } else if (prop->max_y != max_y) {
+ error = iqs5xx_write_word(client, IQS5XX_Y_RES, prop->max_y);
if (error)
return error;
-
- input_abs_set_max(iqs5xx->input,
- prop.swap_x_y ? ABS_MT_POSITION_X :
- ABS_MT_POSITION_Y,
- max_y);
- } else {
- max_y = (u16)prop.max_y;
}
- /*
- * Write horizontal and vertical resolution to the device in case its
- * original defaults were overridden or swapped as per the properties
- * specified in the device tree.
- */
- error = iqs5xx_write_word(client,
- prop.swap_x_y ? IQS5XX_Y_RES : IQS5XX_X_RES,
- max_x);
- if (error)
- return error;
-
- error = iqs5xx_write_word(client,
- prop.swap_x_y ? IQS5XX_X_RES : IQS5XX_Y_RES,
- max_y);
- if (error)
- return error;
-
error = input_mt_init_slots(iqs5xx->input, IQS5XX_NUM_CONTACTS,
INPUT_MT_DIRECT);
if (error)
@@ -603,7 +559,6 @@ static int iqs5xx_dev_init(struct i2c_client *client)
struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client);
struct iqs5xx_dev_id_info *dev_id_info;
int error;
- u8 val;
u8 buf[sizeof(*dev_id_info) + 1];
error = iqs5xx_read_burst(client, IQS5XX_PROD_NUM,
@@ -666,18 +621,18 @@ static int iqs5xx_dev_init(struct i2c_client *client)
if (error)
return error;
- error = iqs5xx_read_byte(client, IQS5XX_SYS_CFG0, &val);
+ error = iqs5xx_write_byte(client, IQS5XX_SYS_CTRL0, IQS5XX_ACK_RESET);
if (error)
return error;
- val |= IQS5XX_SETUP_COMPLETE;
- val &= ~IQS5XX_SW_INPUT_EVENT;
- error = iqs5xx_write_byte(client, IQS5XX_SYS_CFG0, val);
+ error = iqs5xx_write_byte(client, IQS5XX_SYS_CFG0,
+ IQS5XX_SETUP_COMPLETE | IQS5XX_WDT |
+ IQS5XX_ALP_REATI | IQS5XX_REATI);
if (error)
return error;
- val = IQS5XX_TP_EVENT | IQS5XX_EVENT_MODE;
- error = iqs5xx_write_byte(client, IQS5XX_SYS_CFG1, val);
+ error = iqs5xx_write_byte(client, IQS5XX_SYS_CFG1,
+ IQS5XX_TP_EVENT | IQS5XX_EVENT_MODE);
if (error)
return error;
@@ -688,13 +643,12 @@ static int iqs5xx_dev_init(struct i2c_client *client)
iqs5xx->bl_status = dev_id_info->bl_status;
/*
- * Closure of the first communication window that appears following the
- * release of reset appears to kick off an initialization period during
- * which further communication is met with clock stretching. The return
- * from this function is delayed so that further communication attempts
- * avoid this period.
+ * The following delay allows ATI to complete before the open and close
+ * callbacks are free to elicit I2C communication. Any attempts to read
+ * from or write to the device during this time may face extended clock
+ * stretching and prompt the I2C controller to report an error.
*/
- msleep(100);
+ msleep(250);
return 0;
}
@@ -702,7 +656,7 @@ static int iqs5xx_dev_init(struct i2c_client *client)
static irqreturn_t iqs5xx_irq(int irq, void *data)
{
struct iqs5xx_private *iqs5xx = data;
- struct iqs5xx_touch_data touch_data[IQS5XX_NUM_CONTACTS];
+ struct iqs5xx_status status;
struct i2c_client *client = iqs5xx->client;
struct input_dev *input = iqs5xx->input;
int error, i;
@@ -715,21 +669,35 @@ static irqreturn_t iqs5xx_irq(int irq, void *data)
if (iqs5xx->bl_status == IQS5XX_BL_STATUS_RESET)
return IRQ_NONE;
- error = iqs5xx_read_burst(client, IQS5XX_ABS_X,
- touch_data, sizeof(touch_data));
+ error = iqs5xx_read_burst(client, IQS5XX_SYS_INFO0,
+ &status, sizeof(status));
if (error)
return IRQ_NONE;
- for (i = 0; i < ARRAY_SIZE(touch_data); i++) {
- u16 pressure = be16_to_cpu(touch_data[i].strength);
+ if (status.sys_info[0] & IQS5XX_SHOW_RESET) {
+ dev_err(&client->dev, "Unexpected device reset\n");
+
+ error = iqs5xx_dev_init(client);
+ if (error) {
+ dev_err(&client->dev,
+ "Failed to re-initialize device: %d\n", error);
+ return IRQ_NONE;
+ }
+
+ return IRQ_HANDLED;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(status.touch_data); i++) {
+ struct iqs5xx_touch_data *touch_data = &status.touch_data[i];
+ u16 pressure = be16_to_cpu(touch_data->strength);
input_mt_slot(input, i);
if (input_mt_report_slot_state(input, MT_TOOL_FINGER,
pressure != 0)) {
- input_report_abs(input, ABS_MT_POSITION_X,
- be16_to_cpu(touch_data[i].abs_x));
- input_report_abs(input, ABS_MT_POSITION_Y,
- be16_to_cpu(touch_data[i].abs_y));
+ touchscreen_report_pos(iqs5xx->input, &iqs5xx->prop,
+ be16_to_cpu(touch_data->abs_x),
+ be16_to_cpu(touch_data->abs_y),
+ true);
input_report_abs(input, ABS_MT_PRESSURE, pressure);
}
}
@@ -884,7 +852,7 @@ static int iqs5xx_fw_file_parse(struct i2c_client *client,
static int iqs5xx_fw_file_write(struct i2c_client *client, const char *fw_file)
{
struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client);
- int error;
+ int error, error_bl = 0;
u8 *pmap;
if (iqs5xx->bl_status == IQS5XX_BL_STATUS_NONE)
@@ -938,6 +906,7 @@ err_reset:
usleep_range(10000, 10100);
}
+ error_bl = error;
error = iqs5xx_dev_init(client);
if (!error && iqs5xx->bl_status == IQS5XX_BL_STATUS_RESET)
error = -EINVAL;
@@ -949,11 +918,15 @@ err_reset:
err_kfree:
kfree(pmap);
+ if (error_bl)
+ return error_bl;
+
return error;
}
-static ssize_t fw_file_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t fw_file_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
{
struct iqs5xx_private *iqs5xx = dev_get_drvdata(dev);
struct i2c_client *client = iqs5xx->client;
@@ -1012,7 +985,7 @@ static int __maybe_unused iqs5xx_suspend(struct device *dev)
struct input_dev *input = iqs5xx->input;
int error = 0;
- if (!input)
+ if (!input || device_may_wakeup(dev))
return error;
mutex_lock(&input->mutex);
@@ -1031,7 +1004,7 @@ static int __maybe_unused iqs5xx_resume(struct device *dev)
struct input_dev *input = iqs5xx->input;
int error = 0;
- if (!input)
+ if (!input || device_may_wakeup(dev))
return error;
mutex_lock(&input->mutex);
diff --git a/drivers/input/touchscreen/melfas_mip4.c b/drivers/input/touchscreen/melfas_mip4.c
index c0050044a5a9..225796a3f546 100644
--- a/drivers/input/touchscreen/melfas_mip4.c
+++ b/drivers/input/touchscreen/melfas_mip4.c
@@ -465,13 +465,13 @@ static void mip4_report_keys(struct mip4_ts *ts, u8 *packet)
static void mip4_report_touch(struct mip4_ts *ts, u8 *packet)
{
int id;
- bool hover;
- bool palm;
+ bool __always_unused hover;
+ bool __always_unused palm;
bool state;
u16 x, y;
- u8 pressure_stage = 0;
+ u8 __always_unused pressure_stage = 0;
u8 pressure;
- u8 size;
+ u8 __always_unused size;
u8 touch_major;
u8 touch_minor;
diff --git a/drivers/input/touchscreen/raydium_i2c_ts.c b/drivers/input/touchscreen/raydium_i2c_ts.c
index 603a948460d6..4d2d22a86977 100644
--- a/drivers/input/touchscreen/raydium_i2c_ts.c
+++ b/drivers/input/touchscreen/raydium_i2c_ts.c
@@ -445,6 +445,7 @@ static int raydium_i2c_write_object(struct i2c_client *client,
enum raydium_bl_ack state)
{
int error;
+ static const u8 cmd[] = { 0xFF, 0x39 };
error = raydium_i2c_send(client, RM_CMD_BOOT_WRT, data, len);
if (error) {
@@ -453,7 +454,7 @@ static int raydium_i2c_write_object(struct i2c_client *client,
return error;
}
- error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, NULL, 0);
+ error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, cmd, sizeof(cmd));
if (error) {
dev_err(&client->dev, "Ack obj command failed: %d\n", error);
return error;
diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
index 82920ff46f72..2e70c0b79444 100644
--- a/drivers/input/touchscreen/s3c2410_ts.c
+++ b/drivers/input/touchscreen/s3c2410_ts.c
@@ -20,10 +20,43 @@
#include <linux/clk.h>
#include <linux/io.h>
-#include <plat/adc.h>
-#include <plat/regs-adc.h>
+#include <linux/soc/samsung/s3c-adc.h>
#include <linux/platform_data/touchscreen-s3c2410.h>
+#define S3C2410_ADCCON (0x00)
+#define S3C2410_ADCTSC (0x04)
+#define S3C2410_ADCDLY (0x08)
+#define S3C2410_ADCDAT0 (0x0C)
+#define S3C2410_ADCDAT1 (0x10)
+#define S3C64XX_ADCUPDN (0x14)
+#define S3C2443_ADCMUX (0x18)
+#define S3C64XX_ADCCLRINT (0x18)
+#define S5P_ADCMUX (0x1C)
+#define S3C64XX_ADCCLRINTPNDNUP (0x20)
+
+/* ADCTSC Register Bits */
+#define S3C2443_ADCTSC_UD_SEN (1 << 8)
+#define S3C2410_ADCTSC_YM_SEN (1<<7)
+#define S3C2410_ADCTSC_YP_SEN (1<<6)
+#define S3C2410_ADCTSC_XM_SEN (1<<5)
+#define S3C2410_ADCTSC_XP_SEN (1<<4)
+#define S3C2410_ADCTSC_PULL_UP_DISABLE (1<<3)
+#define S3C2410_ADCTSC_AUTO_PST (1<<2)
+#define S3C2410_ADCTSC_XY_PST(x) (((x)&0x3)<<0)
+
+/* ADCDAT0 Bits */
+#define S3C2410_ADCDAT0_UPDOWN (1<<15)
+#define S3C2410_ADCDAT0_AUTO_PST (1<<14)
+#define S3C2410_ADCDAT0_XY_PST (0x3<<12)
+#define S3C2410_ADCDAT0_XPDATA_MASK (0x03FF)
+
+/* ADCDAT1 Bits */
+#define S3C2410_ADCDAT1_UPDOWN (1<<15)
+#define S3C2410_ADCDAT1_AUTO_PST (1<<14)
+#define S3C2410_ADCDAT1_XY_PST (0x3<<12)
+#define S3C2410_ADCDAT1_YPDATA_MASK (0x03FF)
+
+
#define TSC_SLEEP (S3C2410_ADCTSC_PULL_UP_DISABLE | S3C2410_ADCTSC_XY_PST(0))
#define INT_DOWN (0)
diff --git a/drivers/input/touchscreen/stmpe-ts.c b/drivers/input/touchscreen/stmpe-ts.c
index cd747725589b..25c45c3a3561 100644
--- a/drivers/input/touchscreen/stmpe-ts.c
+++ b/drivers/input/touchscreen/stmpe-ts.c
@@ -52,6 +52,7 @@
* @idev: registered input device
* @work: a work item used to scan the device
* @dev: a pointer back to the MFD cell struct device*
+ * @prop: Touchscreen properties
* @ave_ctrl: Sample average control
* (0 -> 1 sample, 1 -> 2 samples, 2 -> 4 samples, 3 -> 8 samples)
* @touch_det_delay: Touch detect interrupt delay
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index 620cdd7d214a..12f2562b0141 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -787,6 +787,7 @@ static int sur40_probe(struct usb_interface *interface,
dev_err(&interface->dev,
"Unable to register video controls.");
v4l2_ctrl_handler_free(&sur40->hdl);
+ error = sur40->hdl.error;
goto err_unreg_v4l2;
}
diff --git a/drivers/input/touchscreen/surface3_spi.c b/drivers/input/touchscreen/surface3_spi.c
index 731454599fce..1da23e5585a0 100644
--- a/drivers/input/touchscreen/surface3_spi.c
+++ b/drivers/input/touchscreen/surface3_spi.c
@@ -94,9 +94,7 @@ static void surface3_spi_report_touch(struct surface3_ts_data *ts_data,
static void surface3_spi_process_touch(struct surface3_ts_data *ts_data, u8 *data)
{
- u16 timestamp;
unsigned int i;
- timestamp = get_unaligned_le16(&data[15]);
for (i = 0; i < 13; i++) {
struct surface3_ts_data_finger *finger;
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index 397cb1d3f481..c847453a03c2 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -1044,6 +1044,7 @@ static void nexio_exit(struct usbtouch_usb *usbtouch)
static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
{
+ struct device *dev = &usbtouch->interface->dev;
struct nexio_touch_packet *packet = (void *) pkt;
struct nexio_priv *priv = usbtouch->priv;
unsigned int data_len = be16_to_cpu(packet->data_len);
@@ -1062,6 +1063,8 @@ static int nexio_read_data(struct usbtouch_usb *usbtouch, unsigned char *pkt)
/* send ACK */
ret = usb_submit_urb(priv->ack, GFP_ATOMIC);
+ if (ret)
+ dev_warn(dev, "Failed to submit ACK URB: %d\n", ret);
if (!usbtouch->type->max_xc) {
usbtouch->type->max_xc = 2 * x_len;
diff --git a/drivers/input/touchscreen/zinitix.c b/drivers/input/touchscreen/zinitix.c
index a3e3adbabc67..3b636beb583c 100644
--- a/drivers/input/touchscreen/zinitix.c
+++ b/drivers/input/touchscreen/zinitix.c
@@ -161,7 +161,7 @@ static int zinitix_read_data(struct i2c_client *client,
ret = i2c_master_recv(client, (u8 *)values, length);
if (ret != length)
- return ret < 0 ? ret : -EIO; ;
+ return ret < 0 ? ret : -EIO;
return 0;
}
@@ -190,7 +190,7 @@ static int zinitix_write_cmd(struct i2c_client *client, u16 reg)
return 0;
}
-static bool zinitix_init_touch(struct bt541_ts_data *bt541)
+static int zinitix_init_touch(struct bt541_ts_data *bt541)
{
struct i2c_client *client = bt541->client;
int i;