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-rw-r--r--drivers/input/touchscreen/Kconfig12
-rw-r--r--drivers/input/touchscreen/Makefile1
-rw-r--r--drivers/input/touchscreen/cyttsp4_core.c2169
-rw-r--r--drivers/input/touchscreen/cyttsp4_core.h472
-rw-r--r--include/linux/platform_data/cyttsp4.h76
5 files changed, 2730 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index f9a5fd89bc02..66df8df88140 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -167,6 +167,18 @@ config TOUCHSCREEN_CYTTSP_SPI
To compile this driver as a module, choose M here: the
module will be called cyttsp_spi.
+config TOUCHSCREEN_CYTTSP4_CORE
+ tristate "Cypress TrueTouch Gen4 Touchscreen Driver"
+ help
+ Core driver for Cypress TrueTouch(tm) Standard Product
+ Generation4 touchscreen controllers.
+
+ Say Y here if you have a Cypress Gen4 touchscreen.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here.
+
config TOUCHSCREEN_DA9034
tristate "Touchscreen support for Dialog Semiconductor DA9034"
depends on PMIC_DA903X
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 2b378b12ee6b..f44500674c32 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_TOUCHSCREEN_CY8CTMG110) += cy8ctmg110_ts.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C) += cyttsp_i2c.o cyttsp_i2c_common.o
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_SPI) += cyttsp_spi.o
+obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_CORE) += cyttsp4_core.o
obj-$(CONFIG_TOUCHSCREEN_DA9034) += da9034-ts.o
obj-$(CONFIG_TOUCHSCREEN_DA9052) += da9052_tsi.o
obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o
diff --git a/drivers/input/touchscreen/cyttsp4_core.c b/drivers/input/touchscreen/cyttsp4_core.c
new file mode 100644
index 000000000000..963da052c15e
--- /dev/null
+++ b/drivers/input/touchscreen/cyttsp4_core.c
@@ -0,0 +1,2169 @@
+/*
+ * cyttsp4_core.c
+ * Cypress TrueTouch(TM) Standard Product V4 Core driver module.
+ * For use with Cypress Txx4xx parts.
+ * Supported parts include:
+ * TMA4XX
+ * TMA1036
+ *
+ * Copyright (C) 2012 Cypress Semiconductor
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2, and only version 2, as published by the
+ * Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
+ *
+ */
+
+#include "cyttsp4_core.h"
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/input/mt.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+
+/* Timeout in ms. */
+#define CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT 500
+#define CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT 5000
+#define CY_CORE_MODE_CHANGE_TIMEOUT 1000
+#define CY_CORE_RESET_AND_WAIT_TIMEOUT 500
+#define CY_CORE_WAKEUP_TIMEOUT 500
+
+#define CY_CORE_STARTUP_RETRY_COUNT 3
+
+static const u8 ldr_exit[] = {
+ 0xFF, 0x01, 0x3B, 0x00, 0x00, 0x4F, 0x6D, 0x17
+};
+
+static const u8 ldr_err_app[] = {
+ 0x01, 0x02, 0x00, 0x00, 0x55, 0xDD, 0x17
+};
+
+static inline size_t merge_bytes(u8 high, u8 low)
+{
+ return (high << 8) + low;
+}
+
+#ifdef VERBOSE_DEBUG
+static void cyttsp4_pr_buf(struct device *dev, u8 *pr_buf, u8 *dptr, int size,
+ const char *data_name)
+{
+ int i, k;
+ const char fmt[] = "%02X ";
+ int max;
+
+ if (!size)
+ return;
+
+ max = (CY_MAX_PRBUF_SIZE - 1) - sizeof(CY_PR_TRUNCATED);
+
+ pr_buf[0] = 0;
+ for (i = k = 0; i < size && k < max; i++, k += 3)
+ scnprintf(pr_buf + k, CY_MAX_PRBUF_SIZE, fmt, dptr[i]);
+
+ dev_vdbg(dev, "%s: %s[0..%d]=%s%s\n", __func__, data_name, size - 1,
+ pr_buf, size <= max ? "" : CY_PR_TRUNCATED);
+}
+#else
+#define cyttsp4_pr_buf(dev, pr_buf, dptr, size, data_name) do { } while (0)
+#endif
+
+static int cyttsp4_load_status_regs(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ struct device *dev = cd->dev;
+ int rc;
+
+ rc = cyttsp4_adap_read(cd, CY_REG_BASE, si->si_ofs.mode_size,
+ si->xy_mode);
+ if (rc < 0)
+ dev_err(dev, "%s: fail read mode regs r=%d\n",
+ __func__, rc);
+ else
+ cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_mode,
+ si->si_ofs.mode_size, "xy_mode");
+
+ return rc;
+}
+
+static int cyttsp4_handshake(struct cyttsp4 *cd, u8 mode)
+{
+ u8 cmd = mode ^ CY_HST_TOGGLE;
+ int rc;
+
+ /*
+ * Mode change issued, handshaking now will cause endless mode change
+ * requests, for sync mode modechange will do same with handshake
+ * */
+ if (mode & CY_HST_MODE_CHANGE)
+ return 0;
+
+ rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
+ if (rc < 0)
+ dev_err(cd->dev, "%s: bus write fail on handshake (ret=%d)\n",
+ __func__, rc);
+
+ return rc;
+}
+
+static int cyttsp4_hw_soft_reset(struct cyttsp4 *cd)
+{
+ u8 cmd = CY_HST_RESET;
+ int rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: FAILED to execute SOFT reset\n",
+ __func__);
+ return rc;
+ }
+ return 0;
+}
+
+static int cyttsp4_hw_hard_reset(struct cyttsp4 *cd)
+{
+ if (cd->cpdata->xres) {
+ cd->cpdata->xres(cd->cpdata, cd->dev);
+ dev_dbg(cd->dev, "%s: execute HARD reset\n", __func__);
+ return 0;
+ }
+ dev_err(cd->dev, "%s: FAILED to execute HARD reset\n", __func__);
+ return -ENOSYS;
+}
+
+static int cyttsp4_hw_reset(struct cyttsp4 *cd)
+{
+ int rc = cyttsp4_hw_hard_reset(cd);
+ if (rc == -ENOSYS)
+ rc = cyttsp4_hw_soft_reset(cd);
+ return rc;
+}
+
+/*
+ * Gets number of bits for a touch filed as parameter,
+ * sets maximum value for field which is used as bit mask
+ * and returns number of bytes required for that field
+ */
+static int cyttsp4_bits_2_bytes(unsigned int nbits, size_t *max)
+{
+ *max = 1 << nbits;
+ return (nbits + 7) / 8;
+}
+
+static int cyttsp4_si_data_offsets(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ int rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(si->si_data),
+ &si->si_data);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail read sysinfo data offsets r=%d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ /* Print sysinfo data offsets */
+ cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)&si->si_data,
+ sizeof(si->si_data), "sysinfo_data_offsets");
+
+ /* convert sysinfo data offset bytes into integers */
+
+ si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
+ si->si_data.map_szl);
+ si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh,
+ si->si_data.map_szl);
+ si->si_ofs.cydata_ofs = merge_bytes(si->si_data.cydata_ofsh,
+ si->si_data.cydata_ofsl);
+ si->si_ofs.test_ofs = merge_bytes(si->si_data.test_ofsh,
+ si->si_data.test_ofsl);
+ si->si_ofs.pcfg_ofs = merge_bytes(si->si_data.pcfg_ofsh,
+ si->si_data.pcfg_ofsl);
+ si->si_ofs.opcfg_ofs = merge_bytes(si->si_data.opcfg_ofsh,
+ si->si_data.opcfg_ofsl);
+ si->si_ofs.ddata_ofs = merge_bytes(si->si_data.ddata_ofsh,
+ si->si_data.ddata_ofsl);
+ si->si_ofs.mdata_ofs = merge_bytes(si->si_data.mdata_ofsh,
+ si->si_data.mdata_ofsl);
+ return rc;
+}
+
+static int cyttsp4_si_get_cydata(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ int read_offset;
+ int mfgid_sz, calc_mfgid_sz;
+ void *p;
+ int rc;
+
+ si->si_ofs.cydata_size = si->si_ofs.test_ofs - si->si_ofs.cydata_ofs;
+ dev_dbg(cd->dev, "%s: cydata size: %Zd\n", __func__,
+ si->si_ofs.cydata_size);
+
+ p = krealloc(si->si_ptrs.cydata, si->si_ofs.cydata_size, GFP_KERNEL);
+ if (p == NULL) {
+ dev_err(cd->dev, "%s: fail alloc cydata memory\n", __func__);
+ return -ENOMEM;
+ }
+ si->si_ptrs.cydata = p;
+
+ read_offset = si->si_ofs.cydata_ofs;
+
+ /* Read the CYDA registers up to MFGID field */
+ rc = cyttsp4_adap_read(cd, read_offset,
+ offsetof(struct cyttsp4_cydata, mfgid_sz)
+ + sizeof(si->si_ptrs.cydata->mfgid_sz),
+ si->si_ptrs.cydata);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail read cydata r=%d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ /* Check MFGID size */
+ mfgid_sz = si->si_ptrs.cydata->mfgid_sz;
+ calc_mfgid_sz = si->si_ofs.cydata_size - sizeof(struct cyttsp4_cydata);
+ if (mfgid_sz != calc_mfgid_sz) {
+ dev_err(cd->dev, "%s: mismatch in MFGID size, reported:%d calculated:%d\n",
+ __func__, mfgid_sz, calc_mfgid_sz);
+ return -EINVAL;
+ }
+
+ read_offset += offsetof(struct cyttsp4_cydata, mfgid_sz)
+ + sizeof(si->si_ptrs.cydata->mfgid_sz);
+
+ /* Read the CYDA registers for MFGID field */
+ rc = cyttsp4_adap_read(cd, read_offset, si->si_ptrs.cydata->mfgid_sz,
+ si->si_ptrs.cydata->mfg_id);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail read cydata r=%d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ read_offset += si->si_ptrs.cydata->mfgid_sz;
+
+ /* Read the rest of the CYDA registers */
+ rc = cyttsp4_adap_read(cd, read_offset,
+ sizeof(struct cyttsp4_cydata)
+ - offsetof(struct cyttsp4_cydata, cyito_idh),
+ &si->si_ptrs.cydata->cyito_idh);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail read cydata r=%d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.cydata,
+ si->si_ofs.cydata_size, "sysinfo_cydata");
+ return rc;
+}
+
+static int cyttsp4_si_get_test_data(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ void *p;
+ int rc;
+
+ si->si_ofs.test_size = si->si_ofs.pcfg_ofs - si->si_ofs.test_ofs;
+
+ p = krealloc(si->si_ptrs.test, si->si_ofs.test_size, GFP_KERNEL);
+ if (p == NULL) {
+ dev_err(cd->dev, "%s: fail alloc test memory\n", __func__);
+ return -ENOMEM;
+ }
+ si->si_ptrs.test = p;
+
+ rc = cyttsp4_adap_read(cd, si->si_ofs.test_ofs, si->si_ofs.test_size,
+ si->si_ptrs.test);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail read test data r=%d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ cyttsp4_pr_buf(cd->dev, cd->pr_buf,
+ (u8 *)si->si_ptrs.test, si->si_ofs.test_size,
+ "sysinfo_test_data");
+ if (si->si_ptrs.test->post_codel &
+ CY_POST_CODEL_WDG_RST)
+ dev_info(cd->dev, "%s: %s codel=%02X\n",
+ __func__, "Reset was a WATCHDOG RESET",
+ si->si_ptrs.test->post_codel);
+
+ if (!(si->si_ptrs.test->post_codel &
+ CY_POST_CODEL_CFG_DATA_CRC_FAIL))
+ dev_info(cd->dev, "%s: %s codel=%02X\n", __func__,
+ "Config Data CRC FAIL",
+ si->si_ptrs.test->post_codel);
+
+ if (!(si->si_ptrs.test->post_codel &
+ CY_POST_CODEL_PANEL_TEST_FAIL))
+ dev_info(cd->dev, "%s: %s codel=%02X\n",
+ __func__, "PANEL TEST FAIL",
+ si->si_ptrs.test->post_codel);
+
+ dev_info(cd->dev, "%s: SCANNING is %s codel=%02X\n",
+ __func__, si->si_ptrs.test->post_codel & 0x08 ?
+ "ENABLED" : "DISABLED",
+ si->si_ptrs.test->post_codel);
+ return rc;
+}
+
+static int cyttsp4_si_get_pcfg_data(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ void *p;
+ int rc;
+
+ si->si_ofs.pcfg_size = si->si_ofs.opcfg_ofs - si->si_ofs.pcfg_ofs;
+
+ p = krealloc(si->si_ptrs.pcfg, si->si_ofs.pcfg_size, GFP_KERNEL);
+ if (p == NULL) {
+ rc = -ENOMEM;
+ dev_err(cd->dev, "%s: fail alloc pcfg memory r=%d\n",
+ __func__, rc);
+ return rc;
+ }
+ si->si_ptrs.pcfg = p;
+
+ rc = cyttsp4_adap_read(cd, si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size,
+ si->si_ptrs.pcfg);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail read pcfg data r=%d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ si->si_ofs.max_x = merge_bytes((si->si_ptrs.pcfg->res_xh
+ & CY_PCFG_RESOLUTION_X_MASK), si->si_ptrs.pcfg->res_xl);
+ si->si_ofs.x_origin = !!(si->si_ptrs.pcfg->res_xh
+ & CY_PCFG_ORIGIN_X_MASK);
+ si->si_ofs.max_y = merge_bytes((si->si_ptrs.pcfg->res_yh
+ & CY_PCFG_RESOLUTION_Y_MASK), si->si_ptrs.pcfg->res_yl);
+ si->si_ofs.y_origin = !!(si->si_ptrs.pcfg->res_yh
+ & CY_PCFG_ORIGIN_Y_MASK);
+ si->si_ofs.max_p = merge_bytes(si->si_ptrs.pcfg->max_zh,
+ si->si_ptrs.pcfg->max_zl);
+
+ cyttsp4_pr_buf(cd->dev, cd->pr_buf,
+ (u8 *)si->si_ptrs.pcfg,
+ si->si_ofs.pcfg_size, "sysinfo_pcfg_data");
+ return rc;
+}
+
+static int cyttsp4_si_get_opcfg_data(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ struct cyttsp4_tch_abs_params *tch;
+ struct cyttsp4_tch_rec_params *tch_old, *tch_new;
+ enum cyttsp4_tch_abs abs;
+ int i;
+ void *p;
+ int rc;
+
+ si->si_ofs.opcfg_size = si->si_ofs.ddata_ofs - si->si_ofs.opcfg_ofs;
+
+ p = krealloc(si->si_ptrs.opcfg, si->si_ofs.opcfg_size, GFP_KERNEL);
+ if (p == NULL) {
+ dev_err(cd->dev, "%s: fail alloc opcfg memory\n", __func__);
+ rc = -ENOMEM;
+ goto cyttsp4_si_get_opcfg_data_exit;
+ }
+ si->si_ptrs.opcfg = p;
+
+ rc = cyttsp4_adap_read(cd, si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size,
+ si->si_ptrs.opcfg);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail read opcfg data r=%d\n",
+ __func__, rc);
+ goto cyttsp4_si_get_opcfg_data_exit;
+ }
+ si->si_ofs.cmd_ofs = si->si_ptrs.opcfg->cmd_ofs;
+ si->si_ofs.rep_ofs = si->si_ptrs.opcfg->rep_ofs;
+ si->si_ofs.rep_sz = (si->si_ptrs.opcfg->rep_szh * 256) +
+ si->si_ptrs.opcfg->rep_szl;
+ si->si_ofs.num_btns = si->si_ptrs.opcfg->num_btns;
+ si->si_ofs.num_btn_regs = (si->si_ofs.num_btns +
+ CY_NUM_BTN_PER_REG - 1) / CY_NUM_BTN_PER_REG;
+ si->si_ofs.tt_stat_ofs = si->si_ptrs.opcfg->tt_stat_ofs;
+ si->si_ofs.obj_cfg0 = si->si_ptrs.opcfg->obj_cfg0;
+ si->si_ofs.max_tchs = si->si_ptrs.opcfg->max_tchs &
+ CY_BYTE_OFS_MASK;
+ si->si_ofs.tch_rec_size = si->si_ptrs.opcfg->tch_rec_size &
+ CY_BYTE_OFS_MASK;
+
+ /* Get the old touch fields */
+ for (abs = CY_TCH_X; abs < CY_NUM_TCH_FIELDS; abs++) {
+ tch = &si->si_ofs.tch_abs[abs];
+ tch_old = &si->si_ptrs.opcfg->tch_rec_old[abs];
+
+ tch->ofs = tch_old->loc & CY_BYTE_OFS_MASK;
+ tch->size = cyttsp4_bits_2_bytes(tch_old->size,
+ &tch->max);
+ tch->bofs = (tch_old->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
+ }
+
+ /* button fields */
+ si->si_ofs.btn_rec_size = si->si_ptrs.opcfg->btn_rec_size;
+ si->si_ofs.btn_diff_ofs = si->si_ptrs.opcfg->btn_diff_ofs;
+ si->si_ofs.btn_diff_size = si->si_ptrs.opcfg->btn_diff_size;
+
+ if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
+ /* Get the extended touch fields */
+ for (i = 0; i < CY_NUM_EXT_TCH_FIELDS; abs++, i++) {
+ tch = &si->si_ofs.tch_abs[abs];
+ tch_new = &si->si_ptrs.opcfg->tch_rec_new[i];
+
+ tch->ofs = tch_new->loc & CY_BYTE_OFS_MASK;
+ tch->size = cyttsp4_bits_2_bytes(tch_new->size,
+ &tch->max);
+ tch->bofs = (tch_new->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT;
+ }
+ }
+
+ for (abs = 0; abs < CY_TCH_NUM_ABS; abs++) {
+ dev_dbg(cd->dev, "%s: tch_rec_%s\n", __func__,
+ cyttsp4_tch_abs_string[abs]);
+ dev_dbg(cd->dev, "%s: ofs =%2Zd\n", __func__,
+ si->si_ofs.tch_abs[abs].ofs);
+ dev_dbg(cd->dev, "%s: siz =%2Zd\n", __func__,
+ si->si_ofs.tch_abs[abs].size);
+ dev_dbg(cd->dev, "%s: max =%2Zd\n", __func__,
+ si->si_ofs.tch_abs[abs].max);
+ dev_dbg(cd->dev, "%s: bofs=%2Zd\n", __func__,
+ si->si_ofs.tch_abs[abs].bofs);
+ }
+
+ si->si_ofs.mode_size = si->si_ofs.tt_stat_ofs + 1;
+ si->si_ofs.data_size = si->si_ofs.max_tchs *
+ si->si_ptrs.opcfg->tch_rec_size;
+
+ cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.opcfg,
+ si->si_ofs.opcfg_size, "sysinfo_opcfg_data");
+
+cyttsp4_si_get_opcfg_data_exit:
+ return rc;
+}
+
+static int cyttsp4_si_get_ddata(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ void *p;
+ int rc;
+
+ si->si_ofs.ddata_size = si->si_ofs.mdata_ofs - si->si_ofs.ddata_ofs;
+
+ p = krealloc(si->si_ptrs.ddata, si->si_ofs.ddata_size, GFP_KERNEL);
+ if (p == NULL) {
+ dev_err(cd->dev, "%s: fail alloc ddata memory\n", __func__);
+ return -ENOMEM;
+ }
+ si->si_ptrs.ddata = p;
+
+ rc = cyttsp4_adap_read(cd, si->si_ofs.ddata_ofs, si->si_ofs.ddata_size,
+ si->si_ptrs.ddata);
+ if (rc < 0)
+ dev_err(cd->dev, "%s: fail read ddata data r=%d\n",
+ __func__, rc);
+ else
+ cyttsp4_pr_buf(cd->dev, cd->pr_buf,
+ (u8 *)si->si_ptrs.ddata,
+ si->si_ofs.ddata_size, "sysinfo_ddata");
+ return rc;
+}
+
+static int cyttsp4_si_get_mdata(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ void *p;
+ int rc;
+
+ si->si_ofs.mdata_size = si->si_ofs.map_sz - si->si_ofs.mdata_ofs;
+
+ p = krealloc(si->si_ptrs.mdata, si->si_ofs.mdata_size, GFP_KERNEL);
+ if (p == NULL) {
+ dev_err(cd->dev, "%s: fail alloc mdata memory\n", __func__);
+ return -ENOMEM;
+ }
+ si->si_ptrs.mdata = p;
+
+ rc = cyttsp4_adap_read(cd, si->si_ofs.mdata_ofs, si->si_ofs.mdata_size,
+ si->si_ptrs.mdata);
+ if (rc < 0)
+ dev_err(cd->dev, "%s: fail read mdata data r=%d\n",
+ __func__, rc);
+ else
+ cyttsp4_pr_buf(cd->dev, cd->pr_buf,
+ (u8 *)si->si_ptrs.mdata,
+ si->si_ofs.mdata_size, "sysinfo_mdata");
+ return rc;
+}
+
+static int cyttsp4_si_get_btn_data(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ int btn;
+ int num_defined_keys;
+ u16 *key_table;
+ void *p;
+ int rc = 0;
+
+ if (si->si_ofs.num_btns) {
+ si->si_ofs.btn_keys_size = si->si_ofs.num_btns *
+ sizeof(struct cyttsp4_btn);
+
+ p = krealloc(si->btn, si->si_ofs.btn_keys_size,
+ GFP_KERNEL|__GFP_ZERO);
+ if (p == NULL) {
+ dev_err(cd->dev, "%s: %s\n", __func__,
+ "fail alloc btn_keys memory");
+ return -ENOMEM;
+ }
+ si->btn = p;
+
+ if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS] == NULL)
+ num_defined_keys = 0;
+ else if (cd->cpdata->sett[CY_IC_GRPNUM_BTN_KEYS]->data == NULL)
+ num_defined_keys = 0;
+ else
+ num_defined_keys = cd->cpdata->sett
+ [CY_IC_GRPNUM_BTN_KEYS]->size;
+
+ for (btn = 0; btn < si->si_ofs.num_btns &&
+ btn < num_defined_keys; btn++) {
+ key_table = (u16 *)cd->cpdata->sett
+ [CY_IC_GRPNUM_BTN_KEYS]->data;
+ si->btn[btn].key_code = key_table[btn];
+ si->btn[btn].state = CY_BTN_RELEASED;
+ si->btn[btn].enabled = true;
+ }
+ for (; btn < si->si_ofs.num_btns; btn++) {
+ si->btn[btn].key_code = KEY_RESERVED;
+ si->btn[btn].state = CY_BTN_RELEASED;
+ si->btn[btn].enabled = true;
+ }
+
+ return rc;
+ }
+
+ si->si_ofs.btn_keys_size = 0;
+ kfree(si->btn);
+ si->btn = NULL;
+ return rc;
+}
+
+static int cyttsp4_si_get_op_data_ptrs(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ void *p;
+
+ p = krealloc(si->xy_mode, si->si_ofs.mode_size, GFP_KERNEL|__GFP_ZERO);
+ if (p == NULL)
+ return -ENOMEM;
+ si->xy_mode = p;
+
+ p = krealloc(si->xy_data, si->si_ofs.data_size, GFP_KERNEL|__GFP_ZERO);
+ if (p == NULL)
+ return -ENOMEM;
+ si->xy_data = p;
+
+ p = krealloc(si->btn_rec_data,
+ si->si_ofs.btn_rec_size * si->si_ofs.num_btns,
+ GFP_KERNEL|__GFP_ZERO);
+ if (p == NULL)
+ return -ENOMEM;
+ si->btn_rec_data = p;
+
+ return 0;
+}
+
+static void cyttsp4_si_put_log_data(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ dev_dbg(cd->dev, "%s: cydata_ofs =%4Zd siz=%4Zd\n", __func__,
+ si->si_ofs.cydata_ofs, si->si_ofs.cydata_size);
+ dev_dbg(cd->dev, "%s: test_ofs =%4Zd siz=%4Zd\n", __func__,
+ si->si_ofs.test_ofs, si->si_ofs.test_size);
+ dev_dbg(cd->dev, "%s: pcfg_ofs =%4Zd siz=%4Zd\n", __func__,
+ si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size);
+ dev_dbg(cd->dev, "%s: opcfg_ofs =%4Zd siz=%4Zd\n", __func__,
+ si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size);
+ dev_dbg(cd->dev, "%s: ddata_ofs =%4Zd siz=%4Zd\n", __func__,
+ si->si_ofs.ddata_ofs, si->si_ofs.ddata_size);
+ dev_dbg(cd->dev, "%s: mdata_ofs =%4Zd siz=%4Zd\n", __func__,
+ si->si_ofs.mdata_ofs, si->si_ofs.mdata_size);
+
+ dev_dbg(cd->dev, "%s: cmd_ofs =%4Zd\n", __func__,
+ si->si_ofs.cmd_ofs);
+ dev_dbg(cd->dev, "%s: rep_ofs =%4Zd\n", __func__,
+ si->si_ofs.rep_ofs);
+ dev_dbg(cd->dev, "%s: rep_sz =%4Zd\n", __func__,
+ si->si_ofs.rep_sz);
+ dev_dbg(cd->dev, "%s: num_btns =%4Zd\n", __func__,
+ si->si_ofs.num_btns);
+ dev_dbg(cd->dev, "%s: num_btn_regs =%4Zd\n", __func__,
+ si->si_ofs.num_btn_regs);
+ dev_dbg(cd->dev, "%s: tt_stat_ofs =%4Zd\n", __func__,
+ si->si_ofs.tt_stat_ofs);
+ dev_dbg(cd->dev, "%s: tch_rec_size =%4Zd\n", __func__,
+ si->si_ofs.tch_rec_size);
+ dev_dbg(cd->dev, "%s: max_tchs =%4Zd\n", __func__,
+ si->si_ofs.max_tchs);
+ dev_dbg(cd->dev, "%s: mode_size =%4Zd\n", __func__,
+ si->si_ofs.mode_size);
+ dev_dbg(cd->dev, "%s: data_size =%4Zd\n", __func__,
+ si->si_ofs.data_size);
+ dev_dbg(cd->dev, "%s: map_sz =%4Zd\n", __func__,
+ si->si_ofs.map_sz);
+
+ dev_dbg(cd->dev, "%s: btn_rec_size =%2Zd\n", __func__,
+ si->si_ofs.btn_rec_size);
+ dev_dbg(cd->dev, "%s: btn_diff_ofs =%2Zd\n", __func__,
+ si->si_ofs.btn_diff_ofs);
+ dev_dbg(cd->dev, "%s: btn_diff_size =%2Zd\n", __func__,
+ si->si_ofs.btn_diff_size);
+
+ dev_dbg(cd->dev, "%s: max_x = 0x%04ZX (%Zd)\n", __func__,
+ si->si_ofs.max_x, si->si_ofs.max_x);
+ dev_dbg(cd->dev, "%s: x_origin = %Zd (%s)\n", __func__,
+ si->si_ofs.x_origin,
+ si->si_ofs.x_origin == CY_NORMAL_ORIGIN ?
+ "left corner" : "right corner");
+ dev_dbg(cd->dev, "%s: max_y = 0x%04ZX (%Zd)\n", __func__,
+ si->si_ofs.max_y, si->si_ofs.max_y);
+ dev_dbg(cd->dev, "%s: y_origin = %Zd (%s)\n", __func__,
+ si->si_ofs.y_origin,
+ si->si_ofs.y_origin == CY_NORMAL_ORIGIN ?
+ "upper corner" : "lower corner");
+ dev_dbg(cd->dev, "%s: max_p = 0x%04ZX (%Zd)\n", __func__,
+ si->si_ofs.max_p, si->si_ofs.max_p);
+
+ dev_dbg(cd->dev, "%s: xy_mode=%p xy_data=%p\n", __func__,
+ si->xy_mode, si->xy_data);
+}
+
+static int cyttsp4_get_sysinfo_regs(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+ int rc;
+
+ rc = cyttsp4_si_data_offsets(cd);
+ if (rc < 0)
+ return rc;
+
+ rc = cyttsp4_si_get_cydata(cd);
+ if (rc < 0)
+ return rc;
+
+ rc = cyttsp4_si_get_test_data(cd);
+ if (rc < 0)
+ return rc;
+
+ rc = cyttsp4_si_get_pcfg_data(cd);
+ if (rc < 0)
+ return rc;
+
+ rc = cyttsp4_si_get_opcfg_data(cd);
+ if (rc < 0)
+ return rc;
+
+ rc = cyttsp4_si_get_ddata(cd);
+ if (rc < 0)
+ return rc;
+
+ rc = cyttsp4_si_get_mdata(cd);
+ if (rc < 0)
+ return rc;
+
+ rc = cyttsp4_si_get_btn_data(cd);
+ if (rc < 0)
+ return rc;
+
+ rc = cyttsp4_si_get_op_data_ptrs(cd);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: failed to get_op_data\n",
+ __func__);
+ return rc;
+ }
+
+ cyttsp4_si_put_log_data(cd);
+
+ /* provide flow control handshake */
+ rc = cyttsp4_handshake(cd, si->si_data.hst_mode);
+ if (rc < 0)
+ dev_err(cd->dev, "%s: handshake fail on sysinfo reg\n",
+ __func__);
+
+ si->ready = true;
+ return rc;
+}
+
+static void cyttsp4_queue_startup_(struct cyttsp4 *cd)
+{
+ if (cd->startup_state == STARTUP_NONE) {
+ cd->startup_state = STARTUP_QUEUED;
+ schedule_work(&cd->startup_work);
+ dev_dbg(cd->dev, "%s: cyttsp4_startup queued\n", __func__);
+ } else {
+ dev_dbg(cd->dev, "%s: startup_state = %d\n", __func__,
+ cd->startup_state);
+ }
+}
+
+static void cyttsp4_report_slot_liftoff(struct cyttsp4_mt_data *md,
+ int max_slots)
+{
+ int t;
+
+ if (md->num_prv_tch == 0)
+ return;
+
+ for (t = 0; t < max_slots; t++) {
+ input_mt_slot(md->input, t);
+ input_mt_report_slot_state(md->input,
+ MT_TOOL_FINGER, false);
+ }
+}
+
+static void cyttsp4_lift_all(struct cyttsp4_mt_data *md)
+{
+ if (!md->si)
+ return;
+
+ if (md->num_prv_tch != 0) {
+ cyttsp4_report_slot_liftoff(md,
+ md->si->si_ofs.tch_abs[CY_TCH_T].max);
+ input_sync(md->input);
+ md->num_prv_tch = 0;
+ }
+}
+
+static void cyttsp4_get_touch_axis(struct cyttsp4_mt_data *md,
+ int *axis, int size, int max, u8 *xy_data, int bofs)
+{
+ int nbyte;
+ int next;
+
+ for (nbyte = 0, *axis = 0, next = 0; nbyte < size; nbyte++) {
+ dev_vdbg(&md->input->dev,
+ "%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
+ " xy_data[%d]=%02X(%d) bofs=%d\n",
+ __func__, *axis, *axis, size, max, xy_data, next,
+ xy_data[next], xy_data[next], bofs);
+ *axis = (*axis * 256) + (xy_data[next] >> bofs);
+ next++;
+ }
+
+ *axis &= max - 1;
+
+ dev_vdbg(&md->input->dev,
+ "%s: *axis=%02X(%d) size=%d max=%08X xy_data=%p"
+ " xy_data[%d]=%02X(%d)\n",
+ __func__, *axis, *axis, size, max, xy_data, next,
+ xy_data[next], xy_data[next]);
+}
+
+static void cyttsp4_get_touch(struct cyttsp4_mt_data *md,
+ struct cyttsp4_touch *touch, u8 *xy_data)
+{
+ struct device *dev = &md->input->dev;
+ struct cyttsp4_sysinfo *si = md->si;
+ enum cyttsp4_tch_abs abs;
+ int tmp;
+ bool flipped;
+
+ for (abs = CY_TCH_X; abs < CY_TCH_NUM_ABS; abs++) {
+ cyttsp4_get_touch_axis(md, &touch->abs[abs],
+ si->si_ofs.tch_abs[abs].size,
+ si->si_ofs.tch_abs[abs].max,
+ xy_data + si->si_ofs.tch_abs[abs].ofs,
+ si->si_ofs.tch_abs[abs].bofs);
+ dev_vdbg(dev, "%s: get %s=%04X(%d)\n", __func__,
+ cyttsp4_tch_abs_string[abs],
+ touch->abs[abs], touch->abs[abs]);
+ }
+
+ if (md->pdata->flags & CY_FLAG_FLIP) {
+ tmp = touch->abs[CY_TCH_X];
+ touch->abs[CY_TCH_X] = touch->abs[CY_TCH_Y];
+ touch->abs[CY_TCH_Y] = tmp;
+ flipped = true;
+ } else
+ flipped = false;
+
+ if (md->pdata->flags & CY_FLAG_INV_X) {
+ if (flipped)
+ touch->abs[CY_TCH_X] = md->si->si_ofs.max_y -
+ touch->abs[CY_TCH_X];
+ else
+ touch->abs[CY_TCH_X] = md->si->si_ofs.max_x -
+ touch->abs[CY_TCH_X];
+ }
+ if (md->pdata->flags & CY_FLAG_INV_Y) {
+ if (flipped)
+ touch->abs[CY_TCH_Y] = md->si->si_ofs.max_x -
+ touch->abs[CY_TCH_Y];
+ else
+ touch->abs[CY_TCH_Y] = md->si->si_ofs.max_y -
+ touch->abs[CY_TCH_Y];
+ }
+
+ dev_vdbg(dev, "%s: flip=%s inv-x=%s inv-y=%s x=%04X(%d) y=%04X(%d)\n",
+ __func__, flipped ? "true" : "false",
+ md->pdata->flags & CY_FLAG_INV_X ? "true" : "false",
+ md->pdata->flags & CY_FLAG_INV_Y ? "true" : "false",
+ touch->abs[CY_TCH_X], touch->abs[CY_TCH_X],
+ touch->abs[CY_TCH_Y], touch->abs[CY_TCH_Y]);
+}
+
+static void cyttsp4_final_sync(struct input_dev *input, int max_slots, int *ids)
+{
+ int t;
+
+ for (t = 0; t < max_slots; t++) {
+ if (ids[t])
+ continue;
+ input_mt_slot(input, t);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, false);
+ }
+
+ input_sync(input);
+}
+
+static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch)
+{
+ struct device *dev = &md->input->dev;
+ struct cyttsp4_sysinfo *si = md->si;
+ struct cyttsp4_touch tch;
+ int sig;
+ int i, j, t = 0;
+ int ids[max(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)];
+
+ memset(ids, 0, si->si_ofs.tch_abs[CY_TCH_T].max * sizeof(int));
+ for (i = 0; i < num_cur_tch; i++) {
+ cyttsp4_get_touch(md, &tch, si->xy_data +
+ (i * si->si_ofs.tch_rec_size));
+ if ((tch.abs[CY_TCH_T] < md->pdata->frmwrk->abs
+ [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST]) ||
+ (tch.abs[CY_TCH_T] > md->pdata->frmwrk->abs
+ [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MAX_OST])) {
+ dev_err(dev, "%s: tch=%d -> bad trk_id=%d max_id=%d\n",
+ __func__, i, tch.abs[CY_TCH_T],
+ md->pdata->frmwrk->abs[(CY_ABS_ID_OST *
+ CY_NUM_ABS_SET) + CY_MAX_OST]);
+ continue;
+ }
+
+ /* use 0 based track id's */
+ sig = md->pdata->frmwrk->abs
+ [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + 0];
+ if (sig != CY_IGNORE_VALUE) {
+ t = tch.abs[CY_TCH_T] - md->pdata->frmwrk->abs
+ [(CY_ABS_ID_OST * CY_NUM_ABS_SET) + CY_MIN_OST];
+ if (tch.abs[CY_TCH_E] == CY_EV_LIFTOFF) {
+ dev_dbg(dev, "%s: t=%d e=%d lift-off\n",
+ __func__, t, tch.abs[CY_TCH_E]);
+ goto cyttsp4_get_mt_touches_pr_tch;
+ }
+ input_mt_slot(md->input, t);
+ input_mt_report_slot_state(md->input, MT_TOOL_FINGER,
+ true);
+ ids[t] = true;
+ }
+
+ /* all devices: position and pressure fields */
+ for (j = 0; j <= CY_ABS_W_OST; j++) {
+ sig = md->pdata->frmwrk->abs[((CY_ABS_X_OST + j) *
+ CY_NUM_ABS_SET) + 0];
+ if (sig != CY_IGNORE_VALUE)
+ input_report_abs(md->input, sig,
+ tch.abs[CY_TCH_X + j]);
+ }
+ if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE) {
+ /*
+ * TMA400 size and orientation fields:
+ * if pressure is non-zero and major touch
+ * signal is zero, then set major and minor touch
+ * signals to minimum non-zero value
+ */
+ if (tch.abs[CY_TCH_P] > 0 && tch.abs[CY_TCH_MAJ] == 0)
+ tch.abs[CY_TCH_MAJ] = tch.abs[CY_TCH_MIN] = 1;
+
+ /* Get the extended touch fields */
+ for (j = 0; j < CY_NUM_EXT_TCH_FIELDS; j++) {
+ sig = md->pdata->frmwrk->abs
+ [((CY_ABS_MAJ_OST + j) *
+ CY_NUM_ABS_SET) + 0];
+ if (sig != CY_IGNORE_VALUE)
+ input_report_abs(md->input, sig,
+ tch.abs[CY_TCH_MAJ + j]);
+ }
+ }
+
+cyttsp4_get_mt_touches_pr_tch:
+ if (si->si_ofs.tch_rec_size > CY_TMA1036_TCH_REC_SIZE)
+ dev_dbg(dev,
+ "%s: t=%d x=%d y=%d z=%d M=%d m=%d o=%d e=%d\n",
+ __func__, t,
+ tch.abs[CY_TCH_X],
+ tch.abs[CY_TCH_Y],
+ tch.abs[CY_TCH_P],
+ tch.abs[CY_TCH_MAJ],
+ tch.abs[CY_TCH_MIN],
+ tch.abs[CY_TCH_OR],
+ tch.abs[CY_TCH_E]);
+ else
+ dev_dbg(dev,
+ "%s: t=%d x=%d y=%d z=%d e=%d\n", __func__,
+ t,
+ tch.abs[CY_TCH_X],
+ tch.abs[CY_TCH_Y],
+ tch.abs[CY_TCH_P],
+ tch.abs[CY_TCH_E]);
+ }
+
+ cyttsp4_final_sync(md->input, si->si_ofs.tch_abs[CY_TCH_T].max, ids);
+
+ md->num_prv_tch = num_cur_tch;
+
+ return;
+}
+
+/* read xy_data for all current touches */
+static int cyttsp4_xy_worker(struct cyttsp4 *cd)
+{
+ struct cyttsp4_mt_data *md = &cd->md;
+ struct device *dev = &md->input->dev;
+ struct cyttsp4_sysinfo *si = md->si;
+ u8 num_cur_tch;
+ u8 hst_mode;
+ u8 rep_len;
+ u8 rep_stat;
+ u8 tt_stat;
+ int rc = 0;
+
+ /*
+ * Get event data from cyttsp4 device.
+ * The event data includes all data
+ * for all active touches.
+ * Event data also includes button data
+ */
+ /*
+ * Use 2 reads:
+ * 1st read to get mode + button bytes + touch count (core)
+ * 2nd read (optional) to get touch 1 - touch n data
+ */
+ hst_mode = si->xy_mode[CY_REG_BASE];
+ rep_len = si->xy_mode[si->si_ofs.rep_ofs];
+ rep_stat = si->xy_mode[si->si_ofs.rep_ofs + 1];
+ tt_stat = si->xy_mode[si->si_ofs.tt_stat_ofs];
+ dev_vdbg(dev, "%s: %s%02X %s%d %s%02X %s%02X\n", __func__,
+ "hst_mode=", hst_mode, "rep_len=", rep_len,
+ "rep_stat=", rep_stat, "tt_stat=", tt_stat);
+
+ num_cur_tch = GET_NUM_TOUCHES(tt_stat);
+ dev_vdbg(dev, "%s: num_cur_tch=%d\n", __func__, num_cur_tch);
+
+ if (rep_len == 0 && num_cur_tch > 0) {
+ dev_err(dev, "%s: report length error rep_len=%d num_tch=%d\n",
+ __func__, rep_len, num_cur_tch);
+ goto cyttsp4_xy_worker_exit;
+ }
+
+ /* read touches */
+ if (num_cur_tch > 0) {
+ rc = cyttsp4_adap_read(cd, si->si_ofs.tt_stat_ofs + 1,
+ num_cur_tch * si->si_ofs.tch_rec_size,
+ si->xy_data);
+ if (rc < 0) {
+ dev_err(dev, "%s: read fail on touch regs r=%d\n",
+ __func__, rc);
+ goto cyttsp4_xy_worker_exit;
+ }
+ }
+
+ /* print xy data */
+ cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_data, num_cur_tch *
+ si->si_ofs.tch_rec_size, "xy_data");
+
+ /* check any error conditions */
+ if (IS_BAD_PKT(rep_stat)) {
+ dev_dbg(dev, "%s: Invalid buffer detected\n", __func__);
+ rc = 0;
+ goto cyttsp4_xy_worker_exit;
+ }
+
+ if (IS_LARGE_AREA(tt_stat))
+ dev_dbg(dev, "%s: Large area detected\n", __func__);
+
+ if (num_cur_tch > si->si_ofs.max_tchs) {
+ dev_err(dev, "%s: too many tch; set to max tch (n=%d c=%Zd)\n",
+ __func__, num_cur_tch, si->si_ofs.max_tchs);
+ num_cur_tch = si->si_ofs.max_tchs;
+ }
+
+ /* extract xy_data for all currently reported touches */
+ dev_vdbg(dev, "%s: extract data num_cur_tch=%d\n", __func__,
+ num_cur_tch);
+ if (num_cur_tch)
+ cyttsp4_get_mt_touches(md, num_cur_tch);
+ else
+ cyttsp4_lift_all(md);
+
+ rc = 0;
+
+cyttsp4_xy_worker_exit:
+ return rc;
+}
+
+static int cyttsp4_mt_attention(struct cyttsp4 *cd)
+{
+ struct device *dev = cd->dev;
+ struct cyttsp4_mt_data *md = &cd->md;
+ int rc = 0;
+
+ if (!md->si)
+ return 0;
+
+ mutex_lock(&md->report_lock);
+ if (!md->is_suspended) {
+ /* core handles handshake */
+ rc = cyttsp4_xy_worker(cd);
+ } else {
+ dev_vdbg(dev, "%s: Ignoring report while suspended\n",
+ __func__);
+ }
+ mutex_unlock(&md->report_lock);
+ if (rc < 0)
+ dev_err(dev, "%s: xy_worker error r=%d\n", __func__, rc);
+
+ return rc;
+}
+
+static irqreturn_t cyttsp4_irq(int irq, void *handle)
+{
+ struct cyttsp4 *cd = handle;
+ struct device *dev = cd->dev;
+ enum cyttsp4_mode cur_mode;
+ u8 cmd_ofs = cd->sysinfo.si_ofs.cmd_ofs;
+ u8 mode[3];
+ int rc;
+
+ /*
+ * Check whether this IRQ should be ignored (external)
+ * This should be the very first thing to check since
+ * ignore_irq may be set for a very short period of time
+ */
+ if (atomic_read(&cd->ignore_irq)) {
+ dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
+ return IRQ_HANDLED;
+ }
+
+ dev_dbg(dev, "%s int:0x%x\n", __func__, cd->int_status);
+
+ mutex_lock(&cd->system_lock);
+
+ /* Just to debug */
+ if (cd->sleep_state == SS_SLEEP_ON || cd->sleep_state == SS_SLEEPING)
+ dev_vdbg(dev, "%s: Received IRQ while in sleep\n", __func__);
+
+ rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), mode);
+ if (rc) {
+ dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
+ goto cyttsp4_irq_exit;
+ }
+ dev_vdbg(dev, "%s mode[0-2]:0x%X 0x%X 0x%X\n", __func__,
+ mode[0], mode[1], mode[2]);
+
+ if (IS_BOOTLOADER(mode[0], mode[1])) {
+ cur_mode = CY_MODE_BOOTLOADER;
+ dev_vdbg(dev, "%s: bl running\n", __func__);
+ if (cd->mode == CY_MODE_BOOTLOADER) {
+ /* Signal bootloader heartbeat heard */
+ wake_up(&cd->wait_q);
+ goto cyttsp4_irq_exit;
+ }
+
+ /* switch to bootloader */
+ dev_dbg(dev, "%s: restart switch to bl m=%d -> m=%d\n",
+ __func__, cd->mode, cur_mode);
+
+ /* catch operation->bl glitch */
+ if (cd->mode != CY_MODE_UNKNOWN) {
+ /* Incase startup_state do not let startup_() */
+ cd->mode = CY_MODE_UNKNOWN;
+ cyttsp4_queue_startup_(cd);
+ goto cyttsp4_irq_exit;
+ }
+
+ /*
+ * do not wake thread on this switch since
+ * it is possible to get an early heartbeat
+ * prior to performing the reset
+ */
+ cd->mode = cur_mode;
+
+ goto cyttsp4_irq_exit;
+ }
+
+ switch (mode[0] & CY_HST_MODE) {
+ case CY_HST_OPERATE:
+ cur_mode = CY_MODE_OPERATIONAL;
+ dev_vdbg(dev, "%s: operational\n", __func__);
+ break;
+ case CY_HST_CAT:
+ cur_mode = CY_MODE_CAT;
+ dev_vdbg(dev, "%s: CaT\n", __func__);
+ break;
+ case CY_HST_SYSINFO:
+ cur_mode = CY_MODE_SYSINFO;
+ dev_vdbg(dev, "%s: sysinfo\n", __func__);
+ break;
+ default:
+ cur_mode = CY_MODE_UNKNOWN;
+ dev_err(dev, "%s: unknown HST mode 0x%02X\n", __func__,
+ mode[0]);
+ break;
+ }
+
+ /* Check whether this IRQ should be ignored (internal) */
+ if (cd->int_status & CY_INT_IGNORE) {
+ dev_vdbg(dev, "%s: Ignoring IRQ\n", __func__);
+ goto cyttsp4_irq_exit;
+ }
+
+ /* Check for wake up interrupt */
+ if (cd->int_status & CY_INT_AWAKE) {
+ cd->int_status &= ~CY_INT_AWAKE;
+ wake_up(&cd->wait_q);
+ dev_vdbg(dev, "%s: Received wake up interrupt\n", __func__);
+ goto cyttsp4_irq_handshake;
+ }
+
+ /* Expecting mode change interrupt */
+ if ((cd->int_status & CY_INT_MODE_CHANGE)
+ && (mode[0] & CY_HST_MODE_CHANGE) == 0) {
+ cd->int_status &= ~CY_INT_MODE_CHANGE;
+ dev_dbg(dev, "%s: finish mode switch m=%d -> m=%d\n",
+ __func__, cd->mode, cur_mode);
+ cd->mode = cur_mode;
+ wake_up(&cd->wait_q);
+ goto cyttsp4_irq_handshake;
+ }
+
+ /* compare current core mode to current device mode */
+ dev_vdbg(dev, "%s: cd->mode=%d cur_mode=%d\n",
+ __func__, cd->mode, cur_mode);
+ if ((mode[0] & CY_HST_MODE_CHANGE) == 0 && cd->mode != cur_mode) {
+ /* Unexpected mode change occurred */
+ dev_err(dev, "%s %d->%d 0x%x\n", __func__, cd->mode,
+ cur_mode, cd->int_status);
+ dev_dbg(dev, "%s: Unexpected mode change, startup\n",
+ __func__);
+ cyttsp4_queue_startup_(cd);
+ goto cyttsp4_irq_exit;
+ }
+
+ /* Expecting command complete interrupt */
+ dev_vdbg(dev, "%s: command byte:0x%x\n", __func__, mode[cmd_ofs]);
+ if ((cd->int_status & CY_INT_EXEC_CMD)
+ && mode[cmd_ofs] & CY_CMD_COMPLETE) {
+ cd->int_status &= ~CY_INT_EXEC_CMD;
+ dev_vdbg(dev, "%s: Received command complete interrupt\n",
+ __func__);
+ wake_up(&cd->wait_q);
+ /*
+ * It is possible to receive a single interrupt for
+ * command complete and touch/button status report.
+ * Continue processing for a possible status report.
+ */
+ }
+
+ /* This should be status report, read status regs */
+ if (cd->mode == CY_MODE_OPERATIONAL) {
+ dev_vdbg(dev, "%s: Read status registers\n", __func__);
+ rc = cyttsp4_load_status_regs(cd);
+ if (rc < 0)
+ dev_err(dev, "%s: fail read mode regs r=%d\n",
+ __func__, rc);
+ }
+
+ cyttsp4_mt_attention(cd);
+
+cyttsp4_irq_handshake:
+ /* handshake the event */
+ dev_vdbg(dev, "%s: Handshake mode=0x%02X r=%d\n",
+ __func__, mode[0], rc);
+ rc = cyttsp4_handshake(cd, mode[0]);
+ if (rc < 0)
+ dev_err(dev, "%s: Fail handshake mode=0x%02X r=%d\n",
+ __func__, mode[0], rc);
+
+ /*
+ * a non-zero udelay period is required for using
+ * IRQF_TRIGGER_LOW in order to delay until the
+ * device completes isr deassert
+ */
+ udelay(cd->cpdata->level_irq_udelay);
+
+cyttsp4_irq_exit:
+ mutex_unlock(&cd->system_lock);
+ return IRQ_HANDLED;
+}
+
+static void cyttsp4_start_wd_timer(struct cyttsp4 *cd)
+{
+ if (!CY_WATCHDOG_TIMEOUT)
+ return;
+
+ mod_timer(&cd->watchdog_timer, jiffies +
+ msecs_to_jiffies(CY_WATCHDOG_TIMEOUT));
+}
+
+static void cyttsp4_stop_wd_timer(struct cyttsp4 *cd)
+{
+ if (!CY_WATCHDOG_TIMEOUT)
+ return;
+
+ /*
+ * Ensure we wait until the watchdog timer
+ * running on a different CPU finishes
+ */
+ del_timer_sync(&cd->watchdog_timer);
+ cancel_work_sync(&cd->watchdog_work);
+ del_timer_sync(&cd->watchdog_timer);
+}
+
+static void cyttsp4_watchdog_timer(unsigned long handle)
+{
+ struct cyttsp4 *cd = (struct cyttsp4 *)handle;
+
+ dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__);
+
+ if (!cd)
+ return;
+
+ if (!work_pending(&cd->watchdog_work))
+ schedule_work(&cd->watchdog_work);
+
+ return;
+}
+
+static int cyttsp4_request_exclusive(struct cyttsp4 *cd, void *ownptr,
+ int timeout_ms)
+{
+ int t = msecs_to_jiffies(timeout_ms);
+ bool with_timeout = (timeout_ms != 0);
+
+ mutex_lock(&cd->system_lock);
+ if (!cd->exclusive_dev && cd->exclusive_waits == 0) {
+ cd->exclusive_dev = ownptr;
+ goto exit;
+ }
+
+ cd->exclusive_waits++;
+wait:
+ mutex_unlock(&cd->system_lock);
+ if (with_timeout) {
+ t = wait_event_timeout(cd->wait_q, !cd->exclusive_dev, t);
+ if (IS_TMO(t)) {
+ dev_err(cd->dev, "%s: tmo waiting exclusive access\n",
+ __func__);
+ mutex_lock(&cd->system_lock);
+ cd->exclusive_waits--;
+ mutex_unlock(&cd->system_lock);
+ return -ETIME;
+ }
+ } else {
+ wait_event(cd->wait_q, !cd->exclusive_dev);
+ }
+ mutex_lock(&cd->system_lock);
+ if (cd->exclusive_dev)
+ goto wait;
+ cd->exclusive_dev = ownptr;
+ cd->exclusive_waits--;
+exit:
+ mutex_unlock(&cd->system_lock);
+
+ return 0;
+}
+
+/*
+ * returns error if was not owned
+ */
+static int cyttsp4_release_exclusive(struct cyttsp4 *cd, void *ownptr)
+{
+ mutex_lock(&cd->system_lock);
+ if (cd->exclusive_dev != ownptr) {
+ mutex_unlock(&cd->system_lock);
+ return -EINVAL;
+ }
+
+ dev_vdbg(cd->dev, "%s: exclusive_dev %p freed\n",
+ __func__, cd->exclusive_dev);
+ cd->exclusive_dev = NULL;
+ wake_up(&cd->wait_q);
+ mutex_unlock(&cd->system_lock);
+ return 0;
+}
+
+static int cyttsp4_wait_bl_heartbeat(struct cyttsp4 *cd)
+{
+ long t;
+ int rc = 0;
+
+ /* wait heartbeat */
+ dev_vdbg(cd->dev, "%s: wait heartbeat...\n", __func__);
+ t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_BOOTLOADER,
+ msecs_to_jiffies(CY_CORE_RESET_AND_WAIT_TIMEOUT));
+ if (IS_TMO(t)) {
+ dev_err(cd->dev, "%s: tmo waiting bl heartbeat cd->mode=%d\n",
+ __func__, cd->mode);
+ rc = -ETIME;
+ }
+
+ return rc;
+}
+
+static int cyttsp4_wait_sysinfo_mode(struct cyttsp4 *cd)
+{
+ long t;
+
+ dev_vdbg(cd->dev, "%s: wait sysinfo...\n", __func__);
+
+ t = wait_event_timeout(cd->wait_q, cd->mode == CY_MODE_SYSINFO,
+ msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
+ if (IS_TMO(t)) {
+ dev_err(cd->dev, "%s: tmo waiting exit bl cd->mode=%d\n",
+ __func__, cd->mode);
+ mutex_lock(&cd->system_lock);
+ cd->int_status &= ~CY_INT_MODE_CHANGE;
+ mutex_unlock(&cd->system_lock);
+ return -ETIME;
+ }
+
+ return 0;
+}
+
+static int cyttsp4_reset_and_wait(struct cyttsp4 *cd)
+{
+ int rc;
+
+ /* reset hardware */
+ mutex_lock(&cd->system_lock);
+ dev_dbg(cd->dev, "%s: reset hw...\n", __func__);
+ rc = cyttsp4_hw_reset(cd);
+ cd->mode = CY_MODE_UNKNOWN;
+ mutex_unlock(&cd->system_lock);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s:Fail hw reset r=%d\n", __func__, rc);
+ return rc;
+ }
+
+ return cyttsp4_wait_bl_heartbeat(cd);
+}
+
+/*
+ * returns err if refused or timeout; block until mode change complete
+ * bit is set (mode change interrupt)
+ */
+static int cyttsp4_set_mode(struct cyttsp4 *cd, int new_mode)
+{
+ u8 new_dev_mode;
+ u8 mode;
+ long t;
+ int rc;
+
+ switch (new_mode) {
+ case CY_MODE_OPERATIONAL:
+ new_dev_mode = CY_HST_OPERATE;
+ break;
+ case CY_MODE_SYSINFO:
+ new_dev_mode = CY_HST_SYSINFO;
+ break;
+ case CY_MODE_CAT:
+ new_dev_mode = CY_HST_CAT;
+ break;
+ default:
+ dev_err(cd->dev, "%s: invalid mode: %02X(%d)\n",
+ __func__, new_mode, new_mode);
+ return -EINVAL;
+ }
+
+ /* change mode */
+ dev_dbg(cd->dev, "%s: %s=%p new_dev_mode=%02X new_mode=%d\n",
+ __func__, "have exclusive", cd->exclusive_dev,
+ new_dev_mode, new_mode);
+
+ mutex_lock(&cd->system_lock);
+ rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
+ if (rc < 0) {
+ mutex_unlock(&cd->system_lock);
+ dev_err(cd->dev, "%s: Fail read mode r=%d\n",
+ __func__, rc);
+ goto exit;
+ }
+
+ /* Clear device mode bits and set to new mode */
+ mode &= ~CY_HST_MODE;
+ mode |= new_dev_mode | CY_HST_MODE_CHANGE;
+
+ cd->int_status |= CY_INT_MODE_CHANGE;
+ rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode), &mode);
+ mutex_unlock(&cd->system_lock);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: Fail write mode change r=%d\n",
+ __func__, rc);
+ goto exit;
+ }
+
+ /* wait for mode change done interrupt */
+ t = wait_event_timeout(cd->wait_q,
+ (cd->int_status & CY_INT_MODE_CHANGE) == 0,
+ msecs_to_jiffies(CY_CORE_MODE_CHANGE_TIMEOUT));
+ dev_dbg(cd->dev, "%s: back from wait t=%ld cd->mode=%d\n",
+ __func__, t, cd->mode);
+
+ if (IS_TMO(t)) {
+ dev_err(cd->dev, "%s: %s\n", __func__,
+ "tmo waiting mode change");
+ mutex_lock(&cd->system_lock);
+ cd->int_status &= ~CY_INT_MODE_CHANGE;
+ mutex_unlock(&cd->system_lock);
+ rc = -EINVAL;
+ }
+
+exit:
+ return rc;
+}
+
+static void cyttsp4_watchdog_work(struct work_struct *work)
+{
+ struct cyttsp4 *cd =
+ container_of(work, struct cyttsp4, watchdog_work);
+ u8 *mode;
+ int retval;
+
+ if (cd == NULL) {
+ dev_err(cd->dev, "%s: NULL context pointer\n", __func__);
+ return;
+ }
+
+ mutex_lock(&cd->system_lock);
+ retval = cyttsp4_load_status_regs(cd);
+ if (retval < 0) {
+ dev_err(cd->dev,
+ "%s: failed to access device in watchdog timer r=%d\n",
+ __func__, retval);
+ cyttsp4_queue_startup_(cd);
+ goto cyttsp4_timer_watchdog_exit_error;
+ }
+ mode = &cd->sysinfo.xy_mode[CY_REG_BASE];
+ if (IS_BOOTLOADER(mode[0], mode[1])) {
+ dev_err(cd->dev,
+ "%s: device found in bootloader mode when operational mode\n",
+ __func__);
+ cyttsp4_queue_startup_(cd);
+ goto cyttsp4_timer_watchdog_exit_error;
+ }
+
+ cyttsp4_start_wd_timer(cd);
+cyttsp4_timer_watchdog_exit_error:
+ mutex_unlock(&cd->system_lock);
+ return;
+}
+
+static int cyttsp4_core_sleep_(struct cyttsp4 *cd)
+{
+ enum cyttsp4_sleep_state ss = SS_SLEEP_ON;
+ enum cyttsp4_int_state int_status = CY_INT_IGNORE;
+ int rc = 0;
+ u8 mode[2];
+
+ /* Already in sleep mode? */
+ mutex_lock(&cd->system_lock);
+ if (cd->sleep_state == SS_SLEEP_ON) {
+ mutex_unlock(&cd->system_lock);
+ return 0;
+ }
+ cd->sleep_state = SS_SLEEPING;
+ mutex_unlock(&cd->system_lock);
+
+ cyttsp4_stop_wd_timer(cd);
+
+ /* Wait until currently running IRQ handler exits and disable IRQ */
+ disable_irq(cd->irq);
+
+ dev_vdbg(cd->dev, "%s: write DEEP SLEEP...\n", __func__);
+ mutex_lock(&cd->system_lock);
+ rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
+ if (rc) {
+ mutex_unlock(&cd->system_lock);
+ dev_err(cd->dev, "%s: Fail read adapter r=%d\n", __func__, rc);
+ goto error;
+ }
+
+ if (IS_BOOTLOADER(mode[0], mode[1])) {
+ mutex_unlock(&cd->system_lock);
+ dev_err(cd->dev, "%s: Device in BOOTLADER mode.\n", __func__);
+ rc = -EINVAL;
+ goto error;
+ }
+
+ mode[0] |= CY_HST_SLEEP;
+ rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(mode[0]), &mode[0]);
+ mutex_unlock(&cd->system_lock);
+ if (rc) {
+ dev_err(cd->dev, "%s: Fail write adapter r=%d\n", __func__, rc);
+ goto error;
+ }
+ dev_vdbg(cd->dev, "%s: write DEEP SLEEP succeeded\n", __func__);
+
+ if (cd->cpdata->power) {
+ dev_dbg(cd->dev, "%s: Power down HW\n", __func__);
+ rc = cd->cpdata->power(cd->cpdata, 0, cd->dev, &cd->ignore_irq);
+ } else {
+ dev_dbg(cd->dev, "%s: No power function\n", __func__);
+ rc = 0;
+ }
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: HW Power down fails r=%d\n",
+ __func__, rc);
+ goto error;
+ }
+
+ /* Give time to FW to sleep */
+ msleep(50);
+
+ goto exit;
+
+error:
+ ss = SS_SLEEP_OFF;
+ int_status = CY_INT_NONE;
+ cyttsp4_start_wd_timer(cd);
+
+exit:
+ mutex_lock(&cd->system_lock);
+ cd->sleep_state = ss;
+ cd->int_status |= int_status;
+ mutex_unlock(&cd->system_lock);
+ enable_irq(cd->irq);
+ return rc;
+}
+
+static int cyttsp4_core_sleep(struct cyttsp4 *cd)
+{
+ int rc;
+
+ rc = cyttsp4_request_exclusive(cd, cd->dev,
+ CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
+ __func__, cd->exclusive_dev, cd->dev);
+ return 0;
+ }
+
+ rc = cyttsp4_core_sleep_(cd);
+
+ if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
+ dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
+ else
+ dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
+
+ return rc;
+}
+
+static int cyttsp4_core_wake_(struct cyttsp4 *cd)
+{
+ struct device *dev = cd->dev;
+ int rc;
+ u8 mode;
+ int t;
+
+ /* Already woken? */
+ mutex_lock(&cd->system_lock);
+ if (cd->sleep_state == SS_SLEEP_OFF) {
+ mutex_unlock(&cd->system_lock);
+ return 0;
+ }
+ cd->int_status &= ~CY_INT_IGNORE;
+ cd->int_status |= CY_INT_AWAKE;
+ cd->sleep_state = SS_WAKING;
+
+ if (cd->cpdata->power) {
+ dev_dbg(dev, "%s: Power up HW\n", __func__);
+ rc = cd->cpdata->power(cd->cpdata, 1, dev, &cd->ignore_irq);
+ } else {
+ dev_dbg(dev, "%s: No power function\n", __func__);
+ rc = -ENOSYS;
+ }
+ if (rc < 0) {
+ dev_err(dev, "%s: HW Power up fails r=%d\n",
+ __func__, rc);
+
+ /* Initiate a read transaction to wake up */
+ cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(mode), &mode);
+ } else
+ dev_vdbg(cd->dev, "%s: HW power up succeeds\n",
+ __func__);
+ mutex_unlock(&cd->system_lock);
+
+ t = wait_event_timeout(cd->wait_q,
+ (cd->int_status & CY_INT_AWAKE) == 0,
+ msecs_to_jiffies(CY_CORE_WAKEUP_TIMEOUT));
+ if (IS_TMO(t)) {
+ dev_err(dev, "%s: TMO waiting for wakeup\n", __func__);
+ mutex_lock(&cd->system_lock);
+ cd->int_status &= ~CY_INT_AWAKE;
+ /* Try starting up */
+ cyttsp4_queue_startup_(cd);
+ mutex_unlock(&cd->system_lock);
+ }
+
+ mutex_lock(&cd->system_lock);
+ cd->sleep_state = SS_SLEEP_OFF;
+ mutex_unlock(&cd->system_lock);
+
+ cyttsp4_start_wd_timer(cd);
+
+ return 0;
+}
+
+static int cyttsp4_core_wake(struct cyttsp4 *cd)
+{
+ int rc;
+
+ rc = cyttsp4_request_exclusive(cd, cd->dev,
+ CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
+ __func__, cd->exclusive_dev, cd->dev);
+ return 0;
+ }
+
+ rc = cyttsp4_core_wake_(cd);
+
+ if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
+ dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
+ else
+ dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
+
+ return rc;
+}
+
+static int cyttsp4_startup_(struct cyttsp4 *cd)
+{
+ int retry = CY_CORE_STARTUP_RETRY_COUNT;
+ int rc;
+
+ cyttsp4_stop_wd_timer(cd);
+
+reset:
+ if (retry != CY_CORE_STARTUP_RETRY_COUNT)
+ dev_dbg(cd->dev, "%s: Retry %d\n", __func__,
+ CY_CORE_STARTUP_RETRY_COUNT - retry);
+
+ /* reset hardware and wait for heartbeat */
+ rc = cyttsp4_reset_and_wait(cd);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: Error on h/w reset r=%d\n", __func__, rc);
+ if (retry--)
+ goto reset;
+ goto exit;
+ }
+
+ /* exit bl into sysinfo mode */
+ dev_vdbg(cd->dev, "%s: write exit ldr...\n", __func__);
+ mutex_lock(&cd->system_lock);
+ cd->int_status &= ~CY_INT_IGNORE;
+ cd->int_status |= CY_INT_MODE_CHANGE;
+
+ rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(ldr_exit),
+ (u8 *)ldr_exit);
+ mutex_unlock(&cd->system_lock);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: Fail write r=%d\n", __func__, rc);
+ if (retry--)
+ goto reset;
+ goto exit;
+ }
+
+ rc = cyttsp4_wait_sysinfo_mode(cd);
+ if (rc < 0) {
+ u8 buf[sizeof(ldr_err_app)];
+ int rc1;
+
+ /* Check for invalid/corrupted touch application */
+ rc1 = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(ldr_err_app),
+ buf);
+ if (rc1) {
+ dev_err(cd->dev, "%s: Fail read r=%d\n", __func__, rc1);
+ } else if (!memcmp(buf, ldr_err_app, sizeof(ldr_err_app))) {
+ dev_err(cd->dev, "%s: Error launching touch application\n",
+ __func__);
+ mutex_lock(&cd->system_lock);
+ cd->invalid_touch_app = true;
+ mutex_unlock(&cd->system_lock);
+ goto exit_no_wd;
+ }
+
+ if (retry--)
+ goto reset;
+ goto exit;
+ }
+
+ mutex_lock(&cd->system_lock);
+ cd->invalid_touch_app = false;
+ mutex_unlock(&cd->system_lock);
+
+ /* read sysinfo data */
+ dev_vdbg(cd->dev, "%s: get sysinfo regs..\n", __func__);
+ rc = cyttsp4_get_sysinfo_regs(cd);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: failed to get sysinfo regs rc=%d\n",
+ __func__, rc);
+ if (retry--)
+ goto reset;
+ goto exit;
+ }
+
+ rc = cyttsp4_set_mode(cd, CY_MODE_OPERATIONAL);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: failed to set mode to operational rc=%d\n",
+ __func__, rc);
+ if (retry--)
+ goto reset;
+ goto exit;
+ }
+
+ cyttsp4_lift_all(&cd->md);
+
+ /* restore to sleep if was suspended */
+ mutex_lock(&cd->system_lock);
+ if (cd->sleep_state == SS_SLEEP_ON) {
+ cd->sleep_state = SS_SLEEP_OFF;
+ mutex_unlock(&cd->system_lock);
+ cyttsp4_core_sleep_(cd);
+ goto exit_no_wd;
+ }
+ mutex_unlock(&cd->system_lock);
+
+exit:
+ cyttsp4_start_wd_timer(cd);
+exit_no_wd:
+ return rc;
+}
+
+static int cyttsp4_startup(struct cyttsp4 *cd)
+{
+ int rc;
+
+ mutex_lock(&cd->system_lock);
+ cd->startup_state = STARTUP_RUNNING;
+ mutex_unlock(&cd->system_lock);
+
+ rc = cyttsp4_request_exclusive(cd, cd->dev,
+ CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT);
+ if (rc < 0) {
+ dev_err(cd->dev, "%s: fail get exclusive ex=%p own=%p\n",
+ __func__, cd->exclusive_dev, cd->dev);
+ goto exit;
+ }
+
+ rc = cyttsp4_startup_(cd);
+
+ if (cyttsp4_release_exclusive(cd, cd->dev) < 0)
+ /* Don't return fail code, mode is already changed. */
+ dev_err(cd->dev, "%s: fail to release exclusive\n", __func__);
+ else
+ dev_vdbg(cd->dev, "%s: pass release exclusive\n", __func__);
+
+exit:
+ mutex_lock(&cd->system_lock);
+ cd->startup_state = STARTUP_NONE;
+ mutex_unlock(&cd->system_lock);
+
+ /* Wake the waiters for end of startup */
+ wake_up(&cd->wait_q);
+
+ return rc;
+}
+
+static void cyttsp4_startup_work_function(struct work_struct *work)
+{
+ struct cyttsp4 *cd = container_of(work, struct cyttsp4, startup_work);
+ int rc;
+
+ rc = cyttsp4_startup(cd);
+ if (rc < 0)
+ dev_err(cd->dev, "%s: Fail queued startup r=%d\n",
+ __func__, rc);
+}
+
+static void cyttsp4_free_si_ptrs(struct cyttsp4 *cd)
+{
+ struct cyttsp4_sysinfo *si = &cd->sysinfo;
+
+ if (!si)
+ return;
+
+ kfree(si->si_ptrs.cydata);
+ kfree(si->si_ptrs.test);
+ kfree(si->si_ptrs.pcfg);
+ kfree(si->si_ptrs.opcfg);
+ kfree(si->si_ptrs.ddata);
+ kfree(si->si_ptrs.mdata);
+ kfree(si->btn);
+ kfree(si->xy_mode);
+ kfree(si->xy_data);
+ kfree(si->btn_rec_data);
+}
+
+#if defined(CONFIG_PM_SLEEP) || defined(CONFIG_PM_RUNTIME)
+static int cyttsp4_core_suspend(struct device *dev)
+{
+ struct cyttsp4 *cd = dev_get_drvdata(dev);
+ struct cyttsp4_mt_data *md = &cd->md;
+ int rc;
+
+ md->is_suspended = true;
+
+ rc = cyttsp4_core_sleep(cd);
+ if (rc < 0) {
+ dev_err(dev, "%s: Error on sleep\n", __func__);
+ return -EAGAIN;
+ }
+ return 0;
+}
+
+static int cyttsp4_core_resume(struct device *dev)
+{
+ struct cyttsp4 *cd = dev_get_drvdata(dev);
+ struct cyttsp4_mt_data *md = &cd->md;
+ int rc;
+
+ md->is_suspended = false;
+
+ rc = cyttsp4_core_wake(cd);
+ if (rc < 0) {
+ dev_err(dev, "%s: Error on wake\n", __func__);
+ return -EAGAIN;
+ }
+
+ return 0;
+}
+#endif
+
+const struct dev_pm_ops cyttsp4_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(cyttsp4_core_suspend, cyttsp4_core_resume)
+ SET_RUNTIME_PM_OPS(cyttsp4_core_suspend, cyttsp4_core_resume, NULL)
+};
+EXPORT_SYMBOL_GPL(cyttsp4_pm_ops);
+
+static int cyttsp4_mt_open(struct input_dev *input)
+{
+ pm_runtime_get(input->dev.parent);
+ return 0;
+}
+
+static void cyttsp4_mt_close(struct input_dev *input)
+{
+ struct cyttsp4_mt_data *md = input_get_drvdata(input);
+ mutex_lock(&md->report_lock);
+ if (!md->is_suspended)
+ pm_runtime_put(input->dev.parent);
+ mutex_unlock(&md->report_lock);
+}
+
+
+static int cyttsp4_setup_input_device(struct cyttsp4 *cd)
+{
+ struct device *dev = cd->dev;
+ struct cyttsp4_mt_data *md = &cd->md;
+ int signal = CY_IGNORE_VALUE;
+ int max_x, max_y, max_p, min, max;
+ int max_x_tmp, max_y_tmp;
+ int i;
+ int rc;
+
+ dev_vdbg(dev, "%s: Initialize event signals\n", __func__);
+ __set_bit(EV_ABS, md->input->evbit);
+ __set_bit(EV_REL, md->input->evbit);
+ __set_bit(EV_KEY, md->input->evbit);
+
+ max_x_tmp = md->si->si_ofs.max_x;
+ max_y_tmp = md->si->si_ofs.max_y;
+
+ /* get maximum values from the sysinfo data */
+ if (md->pdata->flags & CY_FLAG_FLIP) {
+ max_x = max_y_tmp - 1;
+ max_y = max_x_tmp - 1;
+ } else {
+ max_x = max_x_tmp - 1;
+ max_y = max_y_tmp - 1;
+ }
+ max_p = md->si->si_ofs.max_p;
+
+ /* set event signal capabilities */
+ for (i = 0; i < (md->pdata->frmwrk->size / CY_NUM_ABS_SET); i++) {
+ signal = md->pdata->frmwrk->abs
+ [(i * CY_NUM_ABS_SET) + CY_SIGNAL_OST];
+ if (signal != CY_IGNORE_VALUE) {
+ __set_bit(signal, md->input->absbit);
+ min = md->pdata->frmwrk->abs
+ [(i * CY_NUM_ABS_SET) + CY_MIN_OST];
+ max = md->pdata->frmwrk->abs
+ [(i * CY_NUM_ABS_SET) + CY_MAX_OST];
+ if (i == CY_ABS_ID_OST) {
+ /* shift track ids down to start at 0 */
+ max = max - min;
+ min = min - min;
+ } else if (i == CY_ABS_X_OST)
+ max = max_x;
+ else if (i == CY_ABS_Y_OST)
+ max = max_y;
+ else if (i == CY_ABS_P_OST)
+ max = max_p;
+ input_set_abs_params(md->input, signal, min, max,
+ md->pdata->frmwrk->abs
+ [(i * CY_NUM_ABS_SET) + CY_FUZZ_OST],
+ md->pdata->frmwrk->abs
+ [(i * CY_NUM_ABS_SET) + CY_FLAT_OST]);
+ dev_dbg(dev, "%s: register signal=%02X min=%d max=%d\n",
+ __func__, signal, min, max);
+ if ((i == CY_ABS_ID_OST) &&
+ (md->si->si_ofs.tch_rec_size <
+ CY_TMA4XX_TCH_REC_SIZE))
+ break;
+ }
+ }
+
+ input_mt_init_slots(md->input, md->si->si_ofs.tch_abs[CY_TCH_T].max,
+ INPUT_MT_DIRECT);
+ rc = input_register_device(md->input);
+ if (rc < 0)
+ dev_err(dev, "%s: Error, failed register input device r=%d\n",
+ __func__, rc);
+ return rc;
+}
+
+static int cyttsp4_mt_probe(struct cyttsp4 *cd)
+{
+ struct device *dev = cd->dev;
+ struct cyttsp4_mt_data *md = &cd->md;
+ struct cyttsp4_mt_platform_data *pdata = cd->pdata->mt_pdata;
+ int rc = 0;
+
+ mutex_init(&md->report_lock);
+ md->pdata = pdata;
+ /* Create the input device and register it. */
+ dev_vdbg(dev, "%s: Create the input device and register it\n",
+ __func__);
+ md->input = input_allocate_device();
+ if (md->input == NULL) {
+ dev_err(dev, "%s: Error, failed to allocate input device\n",
+ __func__);
+ rc = -ENOSYS;
+ goto error_alloc_failed;
+ }
+
+ md->input->name = pdata->inp_dev_name;
+ scnprintf(md->phys, sizeof(md->phys)-1, "%s", dev_name(dev));
+ md->input->phys = md->phys;
+ md->input->id.bustype = cd->bus_ops->bustype;
+ md->input->dev.parent = dev;
+ md->input->open = cyttsp4_mt_open;
+ md->input->close = cyttsp4_mt_close;
+ input_set_drvdata(md->input, md);
+
+ /* get sysinfo */
+ md->si = &cd->sysinfo;
+ if (!md->si) {
+ dev_err(dev, "%s: Fail get sysinfo pointer from core p=%p\n",
+ __func__, md->si);
+ goto error_get_sysinfo;
+ }
+
+ rc = cyttsp4_setup_input_device(cd);
+ if (rc)
+ goto error_init_input;
+
+ return 0;
+
+error_init_input:
+ input_free_device(md->input);
+error_get_sysinfo:
+ input_set_drvdata(md->input, NULL);
+error_alloc_failed:
+ dev_err(dev, "%s failed.\n", __func__);
+ return rc;
+}
+
+struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
+ struct device *dev, u16 irq, size_t xfer_buf_size)
+{
+ struct cyttsp4 *cd;
+ struct cyttsp4_platform_data *pdata = dev_get_platdata(dev);
+ unsigned long irq_flags;
+ int rc = 0;
+
+ if (!pdata || !pdata->core_pdata || !pdata->mt_pdata) {
+ dev_err(dev, "%s: Missing platform data\n", __func__);
+ rc = -ENODEV;
+ goto error_no_pdata;
+ }
+
+ cd = kzalloc(sizeof(*cd), GFP_KERNEL);
+ if (!cd) {
+ dev_err(dev, "%s: Error, kzalloc\n", __func__);
+ rc = -ENOMEM;
+ goto error_alloc_data;
+ }
+
+ cd->xfer_buf = kzalloc(xfer_buf_size, GFP_KERNEL);
+ if (!cd->xfer_buf) {
+ dev_err(dev, "%s: Error, kzalloc\n", __func__);
+ rc = -ENOMEM;
+ goto error_alloc_data;
+ }
+
+ /* Initialize device info */
+ cd->dev = dev;
+ cd->pdata = pdata;
+ cd->cpdata = pdata->core_pdata;
+ cd->bus_ops = ops;
+
+ /* Initialize mutexes and spinlocks */
+ mutex_init(&cd->system_lock);
+ mutex_init(&cd->adap_lock);
+
+ /* Initialize wait queue */
+ init_waitqueue_head(&cd->wait_q);
+
+ /* Initialize works */
+ INIT_WORK(&cd->startup_work, cyttsp4_startup_work_function);
+ INIT_WORK(&cd->watchdog_work, cyttsp4_watchdog_work);
+
+ /* Initialize IRQ */
+ cd->irq = gpio_to_irq(cd->cpdata->irq_gpio);
+ if (cd->irq < 0) {
+ rc = -EINVAL;
+ goto error_gpio_irq;
+ }
+
+ dev_set_drvdata(dev, cd);
+
+ /* Call platform init function */
+ if (cd->cpdata->init) {
+ dev_dbg(cd->dev, "%s: Init HW\n", __func__);
+ rc = cd->cpdata->init(cd->cpdata, 1, cd->dev);
+ } else {
+ dev_dbg(cd->dev, "%s: No HW INIT function\n", __func__);
+ rc = 0;
+ }
+ if (rc < 0)
+ dev_err(cd->dev, "%s: HW Init fail r=%d\n", __func__, rc);
+
+ dev_dbg(dev, "%s: initialize threaded irq=%d\n", __func__, cd->irq);
+ if (cd->cpdata->level_irq_udelay > 0)
+ /* use level triggered interrupts */
+ irq_flags = IRQF_TRIGGER_LOW | IRQF_ONESHOT;
+ else
+ /* use edge triggered interrupts */
+ irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
+
+ rc = request_threaded_irq(cd->irq, NULL, cyttsp4_irq, irq_flags,
+ dev_name(dev), cd);
+ if (rc < 0) {
+ dev_err(dev, "%s: Error, could not request irq\n", __func__);
+ goto error_request_irq;
+ }
+
+ /* Setup watchdog timer */
+ setup_timer(&cd->watchdog_timer, cyttsp4_watchdog_timer,
+ (unsigned long)cd);
+
+ /*
+ * call startup directly to ensure that the device
+ * is tested before leaving the probe
+ */
+ rc = cyttsp4_startup(cd);
+
+ /* Do not fail probe if startup fails but the device is detected */
+ if (rc < 0 && cd->mode == CY_MODE_UNKNOWN) {
+ dev_err(cd->dev, "%s: Fail initial startup r=%d\n",
+ __func__, rc);
+ goto error_startup;
+ }
+
+ rc = cyttsp4_mt_probe(cd);
+ if (rc < 0) {
+ dev_err(dev, "%s: Error, fail mt probe\n", __func__);
+ goto error_startup;
+ }
+
+ pm_runtime_enable(dev);
+
+ return cd;
+
+error_startup:
+ cancel_work_sync(&cd->startup_work);
+ cyttsp4_stop_wd_timer(cd);
+ pm_runtime_disable(dev);
+ cyttsp4_free_si_ptrs(cd);
+ free_irq(cd->irq, cd);
+error_request_irq:
+ if (cd->cpdata->init)
+ cd->cpdata->init(cd->cpdata, 0, dev);
+ dev_set_drvdata(dev, NULL);
+error_gpio_irq:
+ kfree(cd);
+error_alloc_data:
+error_no_pdata:
+ dev_err(dev, "%s failed.\n", __func__);
+ return ERR_PTR(rc);
+}
+EXPORT_SYMBOL_GPL(cyttsp4_probe);
+
+static void cyttsp4_mt_release(struct cyttsp4_mt_data *md)
+{
+ input_unregister_device(md->input);
+ input_set_drvdata(md->input, NULL);
+}
+
+int cyttsp4_remove(struct cyttsp4 *cd)
+{
+ struct device *dev = cd->dev;
+
+ cyttsp4_mt_release(&cd->md);
+
+ /*
+ * Suspend the device before freeing the startup_work and stopping
+ * the watchdog since sleep function restarts watchdog on failure
+ */
+ pm_runtime_suspend(dev);
+ pm_runtime_disable(dev);
+
+ cancel_work_sync(&cd->startup_work);
+
+ cyttsp4_stop_wd_timer(cd);
+
+ free_irq(cd->irq, cd);
+ if (cd->cpdata->init)
+ cd->cpdata->init(cd->cpdata, 0, dev);
+ dev_set_drvdata(dev, NULL);
+ cyttsp4_free_si_ptrs(cd);
+ kfree(cd);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cyttsp4_remove);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard touchscreen core driver");
+MODULE_AUTHOR("Cypress");
diff --git a/drivers/input/touchscreen/cyttsp4_core.h b/drivers/input/touchscreen/cyttsp4_core.h
new file mode 100644
index 000000000000..86a254354136
--- /dev/null
+++ b/drivers/input/touchscreen/cyttsp4_core.h
@@ -0,0 +1,472 @@
+/*
+ * cyttsp4_core.h
+ * Cypress TrueTouch(TM) Standard Product V4 Core driver module.
+ * For use with Cypress Txx4xx parts.
+ * Supported parts include:
+ * TMA4XX
+ * TMA1036
+ *
+ * Copyright (C) 2012 Cypress Semiconductor
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2, and only version 2, as published by the
+ * Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
+ *
+ */
+
+#ifndef _LINUX_CYTTSP4_CORE_H
+#define _LINUX_CYTTSP4_CORE_H
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/input.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/module.h>
+#include <linux/stringify.h>
+#include <linux/types.h>
+#include <linux/platform_data/cyttsp4.h>
+
+#define CY_REG_BASE 0x00
+
+#define CY_POST_CODEL_WDG_RST 0x01
+#define CY_POST_CODEL_CFG_DATA_CRC_FAIL 0x02
+#define CY_POST_CODEL_PANEL_TEST_FAIL 0x04
+
+#define CY_NUM_BTN_PER_REG 4
+
+/* touch record system information offset masks and shifts */
+#define CY_BYTE_OFS_MASK 0x1F
+#define CY_BOFS_MASK 0xE0
+#define CY_BOFS_SHIFT 5
+
+#define CY_TMA1036_TCH_REC_SIZE 6
+#define CY_TMA4XX_TCH_REC_SIZE 9
+#define CY_TMA1036_MAX_TCH 0x0E
+#define CY_TMA4XX_MAX_TCH 0x1E
+
+#define CY_NORMAL_ORIGIN 0 /* upper, left corner */
+#define CY_INVERT_ORIGIN 1 /* lower, right corner */
+
+/* helpers */
+#define GET_NUM_TOUCHES(x) ((x) & 0x1F)
+#define IS_LARGE_AREA(x) ((x) & 0x20)
+#define IS_BAD_PKT(x) ((x) & 0x20)
+#define IS_BOOTLOADER(hst_mode, reset_detect) \
+ ((hst_mode) & 0x01 || (reset_detect) != 0)
+#define IS_TMO(t) ((t) == 0)
+
+
+enum cyttsp_cmd_bits {
+ CY_CMD_COMPLETE = (1 << 6),
+};
+
+/* Timeout in ms. */
+#define CY_WATCHDOG_TIMEOUT 1000
+
+#define CY_MAX_PRINT_SIZE 512
+#ifdef VERBOSE_DEBUG
+#define CY_MAX_PRBUF_SIZE PIPE_BUF
+#define CY_PR_TRUNCATED " truncated..."
+#endif
+
+enum cyttsp4_ic_grpnum {
+ CY_IC_GRPNUM_RESERVED,
+ CY_IC_GRPNUM_CMD_REGS,
+ CY_IC_GRPNUM_TCH_REP,
+ CY_IC_GRPNUM_DATA_REC,
+ CY_IC_GRPNUM_TEST_REC,
+ CY_IC_GRPNUM_PCFG_REC,
+ CY_IC_GRPNUM_TCH_PARM_VAL,
+ CY_IC_GRPNUM_TCH_PARM_SIZE,
+ CY_IC_GRPNUM_RESERVED1,
+ CY_IC_GRPNUM_RESERVED2,
+ CY_IC_GRPNUM_OPCFG_REC,
+ CY_IC_GRPNUM_DDATA_REC,
+ CY_IC_GRPNUM_MDATA_REC,
+ CY_IC_GRPNUM_TEST_REGS,
+ CY_IC_GRPNUM_BTN_KEYS,
+ CY_IC_GRPNUM_TTHE_REGS,
+ CY_IC_GRPNUM_NUM
+};
+
+enum cyttsp4_int_state {
+ CY_INT_NONE,
+ CY_INT_IGNORE = (1 << 0),
+ CY_INT_MODE_CHANGE = (1 << 1),
+ CY_INT_EXEC_CMD = (1 << 2),
+ CY_INT_AWAKE = (1 << 3),
+};
+
+enum cyttsp4_mode {
+ CY_MODE_UNKNOWN,
+ CY_MODE_BOOTLOADER = (1 << 1),
+ CY_MODE_OPERATIONAL = (1 << 2),
+ CY_MODE_SYSINFO = (1 << 3),
+ CY_MODE_CAT = (1 << 4),
+ CY_MODE_STARTUP = (1 << 5),
+ CY_MODE_LOADER = (1 << 6),
+ CY_MODE_CHANGE_MODE = (1 << 7),
+ CY_MODE_CHANGED = (1 << 8),
+ CY_MODE_CMD_COMPLETE = (1 << 9),
+};
+
+enum cyttsp4_sleep_state {
+ SS_SLEEP_OFF,
+ SS_SLEEP_ON,
+ SS_SLEEPING,
+ SS_WAKING,
+};
+
+enum cyttsp4_startup_state {
+ STARTUP_NONE,
+ STARTUP_QUEUED,
+ STARTUP_RUNNING,
+};
+
+#define CY_NUM_REVCTRL 8
+struct cyttsp4_cydata {
+ u8 ttpidh;
+ u8 ttpidl;
+ u8 fw_ver_major;
+ u8 fw_ver_minor;
+ u8 revctrl[CY_NUM_REVCTRL];
+ u8 blver_major;
+ u8 blver_minor;
+ u8 jtag_si_id3;
+ u8 jtag_si_id2;
+ u8 jtag_si_id1;
+ u8 jtag_si_id0;
+ u8 mfgid_sz;
+ u8 cyito_idh;
+ u8 cyito_idl;
+ u8 cyito_verh;
+ u8 cyito_verl;
+ u8 ttsp_ver_major;
+ u8 ttsp_ver_minor;
+ u8 device_info;
+ u8 mfg_id[];
+} __packed;
+
+struct cyttsp4_test {
+ u8 post_codeh;
+ u8 post_codel;
+} __packed;
+
+struct cyttsp4_pcfg {
+ u8 electrodes_x;
+ u8 electrodes_y;
+ u8 len_xh;
+ u8 len_xl;
+ u8 len_yh;
+ u8 len_yl;
+ u8 res_xh;
+ u8 res_xl;
+ u8 res_yh;
+ u8 res_yl;
+ u8 max_zh;
+ u8 max_zl;
+ u8 panel_info0;
+} __packed;
+
+struct cyttsp4_tch_rec_params {
+ u8 loc;
+ u8 size;
+} __packed;
+
+#define CY_NUM_TCH_FIELDS 7
+#define CY_NUM_EXT_TCH_FIELDS 3
+struct cyttsp4_opcfg {
+ u8 cmd_ofs;
+ u8 rep_ofs;
+ u8 rep_szh;
+ u8 rep_szl;
+ u8 num_btns;
+ u8 tt_stat_ofs;
+ u8 obj_cfg0;
+ u8 max_tchs;
+ u8 tch_rec_size;
+ struct cyttsp4_tch_rec_params tch_rec_old[CY_NUM_TCH_FIELDS];
+ u8 btn_rec_size; /* btn record size (in bytes) */
+ u8 btn_diff_ofs; /* btn data loc, diff counts */
+ u8 btn_diff_size; /* btn size of diff counts (in bits) */
+ struct cyttsp4_tch_rec_params tch_rec_new[CY_NUM_EXT_TCH_FIELDS];
+} __packed;
+
+struct cyttsp4_sysinfo_ptr {
+ struct cyttsp4_cydata *cydata;
+ struct cyttsp4_test *test;
+ struct cyttsp4_pcfg *pcfg;
+ struct cyttsp4_opcfg *opcfg;
+ struct cyttsp4_ddata *ddata;
+ struct cyttsp4_mdata *mdata;
+} __packed;
+
+struct cyttsp4_sysinfo_data {
+ u8 hst_mode;
+ u8 reserved;
+ u8 map_szh;
+ u8 map_szl;
+ u8 cydata_ofsh;
+ u8 cydata_ofsl;
+ u8 test_ofsh;
+ u8 test_ofsl;
+ u8 pcfg_ofsh;
+ u8 pcfg_ofsl;
+ u8 opcfg_ofsh;
+ u8 opcfg_ofsl;
+ u8 ddata_ofsh;
+ u8 ddata_ofsl;
+ u8 mdata_ofsh;
+ u8 mdata_ofsl;
+} __packed;
+
+enum cyttsp4_tch_abs { /* for ordering within the extracted touch data array */
+ CY_TCH_X, /* X */
+ CY_TCH_Y, /* Y */
+ CY_TCH_P, /* P (Z) */
+ CY_TCH_T, /* TOUCH ID */
+ CY_TCH_E, /* EVENT ID */
+ CY_TCH_O, /* OBJECT ID */
+ CY_TCH_W, /* SIZE */
+ CY_TCH_MAJ, /* TOUCH_MAJOR */
+ CY_TCH_MIN, /* TOUCH_MINOR */
+ CY_TCH_OR, /* ORIENTATION */
+ CY_TCH_NUM_ABS
+};
+
+static const char * const cyttsp4_tch_abs_string[] = {
+ [CY_TCH_X] = "X",
+ [CY_TCH_Y] = "Y",
+ [CY_TCH_P] = "P",
+ [CY_TCH_T] = "T",
+ [CY_TCH_E] = "E",
+ [CY_TCH_O] = "O",
+ [CY_TCH_W] = "W",
+ [CY_TCH_MAJ] = "MAJ",
+ [CY_TCH_MIN] = "MIN",
+ [CY_TCH_OR] = "OR",
+ [CY_TCH_NUM_ABS] = "INVALID"
+};
+
+struct cyttsp4_touch {
+ int abs[CY_TCH_NUM_ABS];
+};
+
+struct cyttsp4_tch_abs_params {
+ size_t ofs; /* abs byte offset */
+ size_t size; /* size in bits */
+ size_t max; /* max value */
+ size_t bofs; /* bit offset */
+};
+
+struct cyttsp4_sysinfo_ofs {
+ size_t chip_type;
+ size_t cmd_ofs;
+ size_t rep_ofs;
+ size_t rep_sz;
+ size_t num_btns;
+ size_t num_btn_regs; /* ceil(num_btns/4) */
+ size_t tt_stat_ofs;
+ size_t tch_rec_size;
+ size_t obj_cfg0;
+ size_t max_tchs;
+ size_t mode_size;
+ size_t data_size;
+ size_t map_sz;
+ size_t max_x;
+ size_t x_origin; /* left or right corner */
+ size_t max_y;
+ size_t y_origin; /* upper or lower corner */
+ size_t max_p;
+ size_t cydata_ofs;
+ size_t test_ofs;
+ size_t pcfg_ofs;
+ size_t opcfg_ofs;
+ size_t ddata_ofs;
+ size_t mdata_ofs;
+ size_t cydata_size;
+ size_t test_size;
+ size_t pcfg_size;
+ size_t opcfg_size;
+ size_t ddata_size;
+ size_t mdata_size;
+ size_t btn_keys_size;
+ struct cyttsp4_tch_abs_params tch_abs[CY_TCH_NUM_ABS];
+ size_t btn_rec_size; /* btn record size (in bytes) */
+ size_t btn_diff_ofs;/* btn data loc ,diff counts, (Op-Mode byte ofs) */
+ size_t btn_diff_size;/* btn size of diff counts (in bits) */
+};
+
+enum cyttsp4_btn_state {
+ CY_BTN_RELEASED,
+ CY_BTN_PRESSED,
+ CY_BTN_NUM_STATE
+};
+
+struct cyttsp4_btn {
+ bool enabled;
+ int state; /* CY_BTN_PRESSED, CY_BTN_RELEASED */
+ int key_code;
+};
+
+struct cyttsp4_sysinfo {
+ bool ready;
+ struct cyttsp4_sysinfo_data si_data;
+ struct cyttsp4_sysinfo_ptr si_ptrs;
+ struct cyttsp4_sysinfo_ofs si_ofs;
+ struct cyttsp4_btn *btn; /* button states */
+ u8 *btn_rec_data; /* button diff count data */
+ u8 *xy_mode; /* operational mode and status regs */
+ u8 *xy_data; /* operational touch regs */
+};
+
+struct cyttsp4_mt_data {
+ struct cyttsp4_mt_platform_data *pdata;
+ struct cyttsp4_sysinfo *si;
+ struct input_dev *input;
+ struct mutex report_lock;
+ bool is_suspended;
+ char phys[NAME_MAX];
+ int num_prv_tch;
+};
+
+struct cyttsp4 {
+ struct device *dev;
+ struct mutex system_lock;
+ struct mutex adap_lock;
+ enum cyttsp4_mode mode;
+ enum cyttsp4_sleep_state sleep_state;
+ enum cyttsp4_startup_state startup_state;
+ int int_status;
+ wait_queue_head_t wait_q;
+ int irq;
+ struct work_struct startup_work;
+ struct work_struct watchdog_work;
+ struct timer_list watchdog_timer;
+ struct cyttsp4_sysinfo sysinfo;
+ void *exclusive_dev;
+ int exclusive_waits;
+ atomic_t ignore_irq;
+ bool invalid_touch_app;
+ struct cyttsp4_mt_data md;
+ struct cyttsp4_platform_data *pdata;
+ struct cyttsp4_core_platform_data *cpdata;
+ const struct cyttsp4_bus_ops *bus_ops;
+ u8 *xfer_buf;
+#ifdef VERBOSE_DEBUG
+ u8 pr_buf[CY_MAX_PRBUF_SIZE];
+#endif
+};
+
+struct cyttsp4_bus_ops {
+ u16 bustype;
+ int (*write)(struct device *dev, u8 *xfer_buf, u8 addr, u8 length,
+ const void *values);
+ int (*read)(struct device *dev, u8 *xfer_buf, u8 addr, u8 length,
+ void *values);
+};
+
+enum cyttsp4_hst_mode_bits {
+ CY_HST_TOGGLE = (1 << 7),
+ CY_HST_MODE_CHANGE = (1 << 3),
+ CY_HST_MODE = (7 << 4),
+ CY_HST_OPERATE = (0 << 4),
+ CY_HST_SYSINFO = (1 << 4),
+ CY_HST_CAT = (2 << 4),
+ CY_HST_LOWPOW = (1 << 2),
+ CY_HST_SLEEP = (1 << 1),
+ CY_HST_RESET = (1 << 0),
+};
+
+/* abs settings */
+#define CY_IGNORE_VALUE 0xFFFF
+
+/* abs signal capabilities offsets in the frameworks array */
+enum cyttsp4_sig_caps {
+ CY_SIGNAL_OST,
+ CY_MIN_OST,
+ CY_MAX_OST,
+ CY_FUZZ_OST,
+ CY_FLAT_OST,
+ CY_NUM_ABS_SET /* number of signal capability fields */
+};
+
+/* abs axis signal offsets in the framworks array */
+enum cyttsp4_sig_ost {
+ CY_ABS_X_OST,
+ CY_ABS_Y_OST,
+ CY_ABS_P_OST,
+ CY_ABS_W_OST,
+ CY_ABS_ID_OST,
+ CY_ABS_MAJ_OST,
+ CY_ABS_MIN_OST,
+ CY_ABS_OR_OST,
+ CY_NUM_ABS_OST /* number of abs signals */
+};
+
+enum cyttsp4_flags {
+ CY_FLAG_NONE = 0x00,
+ CY_FLAG_HOVER = 0x04,
+ CY_FLAG_FLIP = 0x08,
+ CY_FLAG_INV_X = 0x10,
+ CY_FLAG_INV_Y = 0x20,
+ CY_FLAG_VKEYS = 0x40,
+};
+
+enum cyttsp4_object_id {
+ CY_OBJ_STANDARD_FINGER,
+ CY_OBJ_LARGE_OBJECT,
+ CY_OBJ_STYLUS,
+ CY_OBJ_HOVER,
+};
+
+enum cyttsp4_event_id {
+ CY_EV_NO_EVENT,
+ CY_EV_TOUCHDOWN,
+ CY_EV_MOVE, /* significant displacement (> act dist) */
+ CY_EV_LIFTOFF, /* record reports last position */
+};
+
+/* x-axis resolution of panel in pixels */
+#define CY_PCFG_RESOLUTION_X_MASK 0x7F
+
+/* y-axis resolution of panel in pixels */
+#define CY_PCFG_RESOLUTION_Y_MASK 0x7F
+
+/* x-axis, 0:origin is on left side of panel, 1: right */
+#define CY_PCFG_ORIGIN_X_MASK 0x80
+
+/* y-axis, 0:origin is on top side of panel, 1: bottom */
+#define CY_PCFG_ORIGIN_Y_MASK 0x80
+
+static inline int cyttsp4_adap_read(struct cyttsp4 *ts, u8 addr, int size,
+ void *buf)
+{
+ return ts->bus_ops->read(ts->dev, ts->xfer_buf, addr, size, buf);
+}
+
+static inline int cyttsp4_adap_write(struct cyttsp4 *ts, u8 addr, int size,
+ const void *buf)
+{
+ return ts->bus_ops->write(ts->dev, ts->xfer_buf, addr, size, buf);
+}
+
+extern struct cyttsp4 *cyttsp4_probe(const struct cyttsp4_bus_ops *ops,
+ struct device *dev, u16 irq, size_t xfer_buf_size);
+extern int cyttsp4_remove(struct cyttsp4 *ts);
+int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, u8 addr,
+ u8 length, const void *values);
+int cyttsp_i2c_read_block_data(struct device *dev, u8 *xfer_buf, u8 addr,
+ u8 length, void *values);
+extern const struct dev_pm_ops cyttsp4_pm_ops;
+
+#endif /* _LINUX_CYTTSP4_CORE_H */
diff --git a/include/linux/platform_data/cyttsp4.h b/include/linux/platform_data/cyttsp4.h
new file mode 100644
index 000000000000..6eba54aff1dc
--- /dev/null
+++ b/include/linux/platform_data/cyttsp4.h
@@ -0,0 +1,76 @@
+/*
+ * Header file for:
+ * Cypress TrueTouch(TM) Standard Product (TTSP) touchscreen drivers.
+ * For use with Cypress Txx3xx parts.
+ * Supported parts include:
+ * CY8CTST341
+ * CY8CTMA340
+ *
+ * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
+ * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2, and only version 2, as published by the
+ * Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contact Cypress Semiconductor at www.cypress.com (kev@cypress.com)
+ *
+ */
+#ifndef _CYTTSP4_H_
+#define _CYTTSP4_H_
+
+#define CYTTSP4_MT_NAME "cyttsp4_mt"
+#define CYTTSP4_I2C_NAME "cyttsp4_i2c_adapter"
+#define CYTTSP4_SPI_NAME "cyttsp4_spi_adapter"
+
+#define CY_TOUCH_SETTINGS_MAX 32
+
+struct touch_framework {
+ const uint16_t *abs;
+ uint8_t size;
+ uint8_t enable_vkeys;
+} __packed;
+
+struct cyttsp4_mt_platform_data {
+ struct touch_framework *frmwrk;
+ unsigned short flags;
+ char const *inp_dev_name;
+};
+
+struct touch_settings {
+ const uint8_t *data;
+ uint32_t size;
+ uint8_t tag;
+} __packed;
+
+struct cyttsp4_core_platform_data {
+ int irq_gpio;
+ int rst_gpio;
+ int level_irq_udelay;
+ int (*xres)(struct cyttsp4_core_platform_data *pdata,
+ struct device *dev);
+ int (*init)(struct cyttsp4_core_platform_data *pdata,
+ int on, struct device *dev);
+ int (*power)(struct cyttsp4_core_platform_data *pdata,
+ int on, struct device *dev, atomic_t *ignore_irq);
+ int (*irq_stat)(struct cyttsp4_core_platform_data *pdata,
+ struct device *dev);
+ struct touch_settings *sett[CY_TOUCH_SETTINGS_MAX];
+};
+
+struct cyttsp4_platform_data {
+ struct cyttsp4_core_platform_data *core_pdata;
+ struct cyttsp4_mt_platform_data *mt_pdata;
+};
+
+#endif /* _CYTTSP4_H_ */
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-05 19:18:37 +0300