#include <linux/slab.h>
#include <asm/unaligned.h>
-/* Version */
-#define MXT_VER_20 20
-#define MXT_VER_21 21
-#define MXT_VER_22 22
-
/* Firmware files */
#define MXT_FW_NAME "maxtouch.fw"
#define MXT_CFG_NAME "maxtouch.cfg"
#define MXT_CFG_MAGIC "OBP_RAW V1"
/* Registers */
-#define MXT_INFO 0x00
-#define MXT_FAMILY_ID 0x00
-#define MXT_VARIANT_ID 0x01
-#define MXT_VERSION 0x02
-#define MXT_BUILD 0x03
-#define MXT_MATRIX_X_SIZE 0x04
-#define MXT_MATRIX_Y_SIZE 0x05
-#define MXT_OBJECT_NUM 0x06
#define MXT_OBJECT_START 0x07
-
#define MXT_OBJECT_SIZE 6
#define MXT_INFO_CHECKSUM_SIZE 3
#define MXT_MAX_BLOCK_WRITE 256
#define MXT_POWER_CFG_RUN 0
#define MXT_POWER_CFG_DEEPSLEEP 1
-/* MXT_GEN_ACQUIRE_T8 field */
-#define MXT_ACQUIRE_CHRGTIME 0
-#define MXT_ACQUIRE_TCHDRIFT 2
-#define MXT_ACQUIRE_DRIFTST 3
-#define MXT_ACQUIRE_TCHAUTOCAL 4
-#define MXT_ACQUIRE_SYNC 5
-#define MXT_ACQUIRE_ATCHCALST 6
-#define MXT_ACQUIRE_ATCHCALSTHR 7
-
/* MXT_TOUCH_MULTI_T9 field */
#define MXT_T9_CTRL 0
#define MXT_T9_ORIENT 9
/* MXT_TOUCH_MULTI_T9 orient */
#define MXT_T9_ORIENT_SWITCH (1 << 0)
-/* MXT_PROCI_GRIPFACE_T20 field */
-#define MXT_GRIPFACE_CTRL 0
-#define MXT_GRIPFACE_XLOGRIP 1
-#define MXT_GRIPFACE_XHIGRIP 2
-#define MXT_GRIPFACE_YLOGRIP 3
-#define MXT_GRIPFACE_YHIGRIP 4
-#define MXT_GRIPFACE_MAXTCHS 5
-#define MXT_GRIPFACE_SZTHR1 7
-#define MXT_GRIPFACE_SZTHR2 8
-#define MXT_GRIPFACE_SHPTHR1 9
-#define MXT_GRIPFACE_SHPTHR2 10
-#define MXT_GRIPFACE_SUPEXTTO 11
-
-/* MXT_PROCI_NOISE field */
-#define MXT_NOISE_CTRL 0
-#define MXT_NOISE_OUTFLEN 1
-#define MXT_NOISE_GCAFUL_LSB 3
-#define MXT_NOISE_GCAFUL_MSB 4
-#define MXT_NOISE_GCAFLL_LSB 5
-#define MXT_NOISE_GCAFLL_MSB 6
-#define MXT_NOISE_ACTVGCAFVALID 7
-#define MXT_NOISE_NOISETHR 8
-#define MXT_NOISE_FREQHOPSCALE 10
-#define MXT_NOISE_FREQ0 11
-#define MXT_NOISE_FREQ1 12
-#define MXT_NOISE_FREQ2 13
-#define MXT_NOISE_FREQ3 14
-#define MXT_NOISE_FREQ4 15
-#define MXT_NOISE_IDLEGCAFVALID 16
-
/* MXT_SPT_COMMSCONFIG_T18 */
#define MXT_COMMS_CTRL 0
#define MXT_COMMS_CMD 1
-/* MXT_SPT_CTECONFIG_T28 field */
-#define MXT_CTE_CTRL 0
-#define MXT_CTE_CMD 1
-#define MXT_CTE_MODE 2
-#define MXT_CTE_IDLEGCAFDEPTH 3
-#define MXT_CTE_ACTVGCAFDEPTH 4
-#define MXT_CTE_VOLTAGE 5
-
-#define MXT_VOLTAGE_DEFAULT 2700000
-#define MXT_VOLTAGE_STEP 10000
-
/* Define for MXT_GEN_COMMAND_T6 */
#define MXT_BOOT_VALUE 0xa5
#define MXT_RESET_VALUE 0x01
count = data->msg_buf[0];
- if (count == 0) {
- /*
- * This condition is caused by the CHG line being configured
- * in Mode 0. It results in unnecessary I2C operations but it
- * is benign.
- */
- dev_dbg(dev, "Interrupt triggered but zero messages\n");
+ /*
+ * This condition may be caused by the CHG line being configured in
+ * Mode 0. It results in unnecessary I2C operations but it is benign.
+ */
+ if (count == 0)
return IRQ_NONE;
- } else if (count > data->max_reportid) {
- dev_err(dev, "T44 count %d exceeded max report id\n", count);
+
+ if (count > data->max_reportid) {
+ dev_warn(dev, "T44 count %d exceeded max report id\n", count);
count = data->max_reportid;
}
struct device *dev = &data->client->dev;
int ret = 0;
- dev_info(dev, "Resetting chip\n");
+ dev_info(dev, "Resetting device\n");
+
+ disable_irq(data->irq);
reinit_completion(&data->reset_completion);
if (ret)
return ret;
+ /* Ignore CHG line for 100ms after reset */
+ msleep(100);
+
+ enable_irq(data->irq);
+
ret = mxt_wait_for_completion(data, &data->reset_completion,
MXT_RESET_TIMEOUT);
if (ret)
int error;
/* Read 7-byte info block starting at address 0 */
- error = __mxt_read_reg(client, MXT_INFO, sizeof(*info), info);
+ error = __mxt_read_reg(client, 0, sizeof(*info), info);
if (error)
return error;
if (pdata->t19_num_keys) {
mxt_set_up_as_touchpad(input_dev, data);
mt_flags |= INPUT_MT_POINTER;
+ } else {
+ mt_flags |= INPUT_MT_DIRECT;
}
/* For multi touch */
static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client)
{
struct mxt_platform_data *pdata;
+ struct device_node *np = client->dev.of_node;
u32 *keymap;
- u32 keycode;
- int proplen, i, ret;
+ int proplen, ret;
- if (!client->dev.of_node)
+ if (!np)
return ERR_PTR(-ENOENT);
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return ERR_PTR(-ENOMEM);
- if (of_find_property(client->dev.of_node, "linux,gpio-keymap",
- &proplen)) {
+ if (of_find_property(np, "linux,gpio-keymap", &proplen)) {
pdata->t19_num_keys = proplen / sizeof(u32);
keymap = devm_kzalloc(&client->dev,
if (!keymap)
return ERR_PTR(-ENOMEM);
- for (i = 0; i < pdata->t19_num_keys; i++) {
- ret = of_property_read_u32_index(client->dev.of_node,
- "linux,gpio-keymap", i, &keycode);
- if (ret)
- keycode = KEY_RESERVED;
-
- keymap[i] = keycode;
- }
+ ret = of_property_read_u32_array(np, "linux,gpio-keymap",
+ keymap, pdata->t19_num_keys);
+ if (ret)
+ dev_warn(&client->dev,
+ "Couldn't read linux,gpio-keymap: %d\n", ret);
pdata->t19_keymap = keymap;
}
struct mxt_data *data = i2c_get_clientdata(client);
struct input_dev *input_dev = data->input_dev;
+ if (!input_dev)
+ return 0;
+
mutex_lock(&input_dev->mutex);
if (input_dev->users)
struct mxt_data *data = i2c_get_clientdata(client);
struct input_dev *input_dev = data->input_dev;
+ if (!input_dev)
+ return 0;
+
mutex_lock(&input_dev->mutex);
if (input_dev->users)
projects / firefly-linux-kernel-4.4.55.git / blobdiff