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2180 lines
55 KiB
2180 lines
55 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* cyttsp4_core.c |
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* Cypress TrueTouch(TM) Standard Product V4 Core driver module. |
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* For use with Cypress Txx4xx parts. |
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* Supported parts include: |
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* TMA4XX |
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* TMA1036 |
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* |
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* Copyright (C) 2012 Cypress Semiconductor |
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* |
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* Contact Cypress Semiconductor at www.cypress.com <[email protected]> |
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*/ |
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|
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#include "cyttsp4_core.h" |
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#include <linux/delay.h> |
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#include <linux/gpio.h> |
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#include <linux/input/mt.h> |
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#include <linux/interrupt.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/sched.h> |
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#include <linux/slab.h> |
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|
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/* Timeout in ms. */ |
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#define CY_CORE_REQUEST_EXCLUSIVE_TIMEOUT 500 |
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#define CY_CORE_SLEEP_REQUEST_EXCLUSIVE_TIMEOUT 5000 |
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#define CY_CORE_MODE_CHANGE_TIMEOUT 1000 |
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#define CY_CORE_RESET_AND_WAIT_TIMEOUT 500 |
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#define CY_CORE_WAKEUP_TIMEOUT 500 |
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|
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#define CY_CORE_STARTUP_RETRY_COUNT 3 |
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|
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static const char * const cyttsp4_tch_abs_string[] = { |
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[CY_TCH_X] = "X", |
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[CY_TCH_Y] = "Y", |
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[CY_TCH_P] = "P", |
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[CY_TCH_T] = "T", |
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[CY_TCH_E] = "E", |
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[CY_TCH_O] = "O", |
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[CY_TCH_W] = "W", |
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[CY_TCH_MAJ] = "MAJ", |
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[CY_TCH_MIN] = "MIN", |
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[CY_TCH_OR] = "OR", |
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[CY_TCH_NUM_ABS] = "INVALID" |
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}; |
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|
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static const u8 ldr_exit[] = { |
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0xFF, 0x01, 0x3B, 0x00, 0x00, 0x4F, 0x6D, 0x17 |
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}; |
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|
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static const u8 ldr_err_app[] = { |
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0x01, 0x02, 0x00, 0x00, 0x55, 0xDD, 0x17 |
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}; |
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|
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static inline size_t merge_bytes(u8 high, u8 low) |
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{ |
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return (high << 8) + low; |
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} |
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|
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#ifdef VERBOSE_DEBUG |
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static void cyttsp4_pr_buf(struct device *dev, u8 *pr_buf, u8 *dptr, int size, |
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const char *data_name) |
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{ |
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int i, k; |
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const char fmt[] = "%02X "; |
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int max; |
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|
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if (!size) |
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return; |
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|
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max = (CY_MAX_PRBUF_SIZE - 1) - sizeof(CY_PR_TRUNCATED); |
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|
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pr_buf[0] = 0; |
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for (i = k = 0; i < size && k < max; i++, k += 3) |
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scnprintf(pr_buf + k, CY_MAX_PRBUF_SIZE, fmt, dptr[i]); |
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|
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dev_vdbg(dev, "%s: %s[0..%d]=%s%s\n", __func__, data_name, size - 1, |
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pr_buf, size <= max ? "" : CY_PR_TRUNCATED); |
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} |
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#else |
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#define cyttsp4_pr_buf(dev, pr_buf, dptr, size, data_name) do { } while (0) |
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#endif |
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static int cyttsp4_load_status_regs(struct cyttsp4 *cd) |
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{ |
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struct cyttsp4_sysinfo *si = &cd->sysinfo; |
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struct device *dev = cd->dev; |
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int rc; |
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|
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rc = cyttsp4_adap_read(cd, CY_REG_BASE, si->si_ofs.mode_size, |
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si->xy_mode); |
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if (rc < 0) |
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dev_err(dev, "%s: fail read mode regs r=%d\n", |
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__func__, rc); |
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else |
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cyttsp4_pr_buf(dev, cd->pr_buf, si->xy_mode, |
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si->si_ofs.mode_size, "xy_mode"); |
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|
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return rc; |
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} |
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|
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static int cyttsp4_handshake(struct cyttsp4 *cd, u8 mode) |
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{ |
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u8 cmd = mode ^ CY_HST_TOGGLE; |
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int rc; |
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|
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/* |
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* Mode change issued, handshaking now will cause endless mode change |
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* requests, for sync mode modechange will do same with handshake |
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* */ |
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if (mode & CY_HST_MODE_CHANGE) |
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return 0; |
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|
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rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd); |
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if (rc < 0) |
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dev_err(cd->dev, "%s: bus write fail on handshake (ret=%d)\n", |
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__func__, rc); |
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|
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return rc; |
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} |
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|
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static int cyttsp4_hw_soft_reset(struct cyttsp4 *cd) |
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{ |
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u8 cmd = CY_HST_RESET; |
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int rc = cyttsp4_adap_write(cd, CY_REG_BASE, sizeof(cmd), &cmd); |
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if (rc < 0) { |
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dev_err(cd->dev, "%s: FAILED to execute SOFT reset\n", |
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__func__); |
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return rc; |
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} |
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return 0; |
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} |
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|
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static int cyttsp4_hw_hard_reset(struct cyttsp4 *cd) |
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{ |
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if (cd->cpdata->xres) { |
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cd->cpdata->xres(cd->cpdata, cd->dev); |
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dev_dbg(cd->dev, "%s: execute HARD reset\n", __func__); |
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return 0; |
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} |
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dev_err(cd->dev, "%s: FAILED to execute HARD reset\n", __func__); |
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return -ENOSYS; |
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} |
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|
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static int cyttsp4_hw_reset(struct cyttsp4 *cd) |
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{ |
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int rc = cyttsp4_hw_hard_reset(cd); |
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if (rc == -ENOSYS) |
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rc = cyttsp4_hw_soft_reset(cd); |
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return rc; |
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} |
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|
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/* |
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* Gets number of bits for a touch filed as parameter, |
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* sets maximum value for field which is used as bit mask |
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* and returns number of bytes required for that field |
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*/ |
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static int cyttsp4_bits_2_bytes(unsigned int nbits, size_t *max) |
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{ |
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*max = 1UL << nbits; |
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return (nbits + 7) / 8; |
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} |
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|
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static int cyttsp4_si_data_offsets(struct cyttsp4 *cd) |
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{ |
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struct cyttsp4_sysinfo *si = &cd->sysinfo; |
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int rc = cyttsp4_adap_read(cd, CY_REG_BASE, sizeof(si->si_data), |
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&si->si_data); |
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if (rc < 0) { |
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dev_err(cd->dev, "%s: fail read sysinfo data offsets r=%d\n", |
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__func__, rc); |
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return rc; |
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} |
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|
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/* Print sysinfo data offsets */ |
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cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)&si->si_data, |
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sizeof(si->si_data), "sysinfo_data_offsets"); |
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|
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/* convert sysinfo data offset bytes into integers */ |
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|
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si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh, |
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si->si_data.map_szl); |
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si->si_ofs.map_sz = merge_bytes(si->si_data.map_szh, |
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si->si_data.map_szl); |
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si->si_ofs.cydata_ofs = merge_bytes(si->si_data.cydata_ofsh, |
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si->si_data.cydata_ofsl); |
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si->si_ofs.test_ofs = merge_bytes(si->si_data.test_ofsh, |
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si->si_data.test_ofsl); |
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si->si_ofs.pcfg_ofs = merge_bytes(si->si_data.pcfg_ofsh, |
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si->si_data.pcfg_ofsl); |
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si->si_ofs.opcfg_ofs = merge_bytes(si->si_data.opcfg_ofsh, |
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si->si_data.opcfg_ofsl); |
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si->si_ofs.ddata_ofs = merge_bytes(si->si_data.ddata_ofsh, |
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si->si_data.ddata_ofsl); |
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si->si_ofs.mdata_ofs = merge_bytes(si->si_data.mdata_ofsh, |
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si->si_data.mdata_ofsl); |
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return rc; |
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} |
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|
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static int cyttsp4_si_get_cydata(struct cyttsp4 *cd) |
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{ |
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struct cyttsp4_sysinfo *si = &cd->sysinfo; |
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int read_offset; |
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int mfgid_sz, calc_mfgid_sz; |
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void *p; |
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int rc; |
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|
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if (si->si_ofs.test_ofs <= si->si_ofs.cydata_ofs) { |
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dev_err(cd->dev, |
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"%s: invalid offset test_ofs: %zu, cydata_ofs: %zu\n", |
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__func__, si->si_ofs.test_ofs, si->si_ofs.cydata_ofs); |
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return -EINVAL; |
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} |
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|
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si->si_ofs.cydata_size = si->si_ofs.test_ofs - si->si_ofs.cydata_ofs; |
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dev_dbg(cd->dev, "%s: cydata size: %zd\n", __func__, |
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si->si_ofs.cydata_size); |
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|
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p = krealloc(si->si_ptrs.cydata, si->si_ofs.cydata_size, GFP_KERNEL); |
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if (p == NULL) { |
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dev_err(cd->dev, "%s: failed to allocate cydata memory\n", |
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__func__); |
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return -ENOMEM; |
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} |
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si->si_ptrs.cydata = p; |
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|
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read_offset = si->si_ofs.cydata_ofs; |
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|
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/* Read the CYDA registers up to MFGID field */ |
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rc = cyttsp4_adap_read(cd, read_offset, |
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offsetof(struct cyttsp4_cydata, mfgid_sz) |
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+ sizeof(si->si_ptrs.cydata->mfgid_sz), |
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si->si_ptrs.cydata); |
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if (rc < 0) { |
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dev_err(cd->dev, "%s: fail read cydata r=%d\n", |
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__func__, rc); |
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return rc; |
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} |
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|
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/* Check MFGID size */ |
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mfgid_sz = si->si_ptrs.cydata->mfgid_sz; |
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calc_mfgid_sz = si->si_ofs.cydata_size - sizeof(struct cyttsp4_cydata); |
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if (mfgid_sz != calc_mfgid_sz) { |
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dev_err(cd->dev, "%s: mismatch in MFGID size, reported:%d calculated:%d\n", |
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__func__, mfgid_sz, calc_mfgid_sz); |
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return -EINVAL; |
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} |
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read_offset += offsetof(struct cyttsp4_cydata, mfgid_sz) |
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+ sizeof(si->si_ptrs.cydata->mfgid_sz); |
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|
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/* Read the CYDA registers for MFGID field */ |
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rc = cyttsp4_adap_read(cd, read_offset, si->si_ptrs.cydata->mfgid_sz, |
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si->si_ptrs.cydata->mfg_id); |
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if (rc < 0) { |
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dev_err(cd->dev, "%s: fail read cydata r=%d\n", |
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__func__, rc); |
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return rc; |
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} |
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read_offset += si->si_ptrs.cydata->mfgid_sz; |
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|
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/* Read the rest of the CYDA registers */ |
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rc = cyttsp4_adap_read(cd, read_offset, |
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sizeof(struct cyttsp4_cydata) |
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- offsetof(struct cyttsp4_cydata, cyito_idh), |
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&si->si_ptrs.cydata->cyito_idh); |
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if (rc < 0) { |
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dev_err(cd->dev, "%s: fail read cydata r=%d\n", |
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__func__, rc); |
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return rc; |
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} |
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cyttsp4_pr_buf(cd->dev, cd->pr_buf, (u8 *)si->si_ptrs.cydata, |
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si->si_ofs.cydata_size, "sysinfo_cydata"); |
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return rc; |
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} |
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|
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static int cyttsp4_si_get_test_data(struct cyttsp4 *cd) |
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{ |
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struct cyttsp4_sysinfo *si = &cd->sysinfo; |
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void *p; |
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int rc; |
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|
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if (si->si_ofs.pcfg_ofs <= si->si_ofs.test_ofs) { |
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dev_err(cd->dev, |
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"%s: invalid offset pcfg_ofs: %zu, test_ofs: %zu\n", |
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__func__, si->si_ofs.pcfg_ofs, si->si_ofs.test_ofs); |
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return -EINVAL; |
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} |
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si->si_ofs.test_size = si->si_ofs.pcfg_ofs - si->si_ofs.test_ofs; |
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|
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p = krealloc(si->si_ptrs.test, si->si_ofs.test_size, GFP_KERNEL); |
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if (p == NULL) { |
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dev_err(cd->dev, "%s: failed to allocate test memory\n", |
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__func__); |
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return -ENOMEM; |
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} |
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si->si_ptrs.test = p; |
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|
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rc = cyttsp4_adap_read(cd, si->si_ofs.test_ofs, si->si_ofs.test_size, |
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si->si_ptrs.test); |
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if (rc < 0) { |
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dev_err(cd->dev, "%s: fail read test data r=%d\n", |
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__func__, rc); |
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return rc; |
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} |
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cyttsp4_pr_buf(cd->dev, cd->pr_buf, |
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(u8 *)si->si_ptrs.test, si->si_ofs.test_size, |
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"sysinfo_test_data"); |
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if (si->si_ptrs.test->post_codel & |
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CY_POST_CODEL_WDG_RST) |
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dev_info(cd->dev, "%s: %s codel=%02X\n", |
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__func__, "Reset was a WATCHDOG RESET", |
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si->si_ptrs.test->post_codel); |
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|
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if (!(si->si_ptrs.test->post_codel & |
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CY_POST_CODEL_CFG_DATA_CRC_FAIL)) |
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dev_info(cd->dev, "%s: %s codel=%02X\n", __func__, |
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"Config Data CRC FAIL", |
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si->si_ptrs.test->post_codel); |
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|
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if (!(si->si_ptrs.test->post_codel & |
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CY_POST_CODEL_PANEL_TEST_FAIL)) |
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dev_info(cd->dev, "%s: %s codel=%02X\n", |
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__func__, "PANEL TEST FAIL", |
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si->si_ptrs.test->post_codel); |
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|
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dev_info(cd->dev, "%s: SCANNING is %s codel=%02X\n", |
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__func__, si->si_ptrs.test->post_codel & 0x08 ? |
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"ENABLED" : "DISABLED", |
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si->si_ptrs.test->post_codel); |
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return rc; |
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} |
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|
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static int cyttsp4_si_get_pcfg_data(struct cyttsp4 *cd) |
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{ |
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struct cyttsp4_sysinfo *si = &cd->sysinfo; |
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void *p; |
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int rc; |
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|
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if (si->si_ofs.opcfg_ofs <= si->si_ofs.pcfg_ofs) { |
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dev_err(cd->dev, |
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"%s: invalid offset opcfg_ofs: %zu, pcfg_ofs: %zu\n", |
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__func__, si->si_ofs.opcfg_ofs, si->si_ofs.pcfg_ofs); |
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return -EINVAL; |
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} |
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|
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si->si_ofs.pcfg_size = si->si_ofs.opcfg_ofs - si->si_ofs.pcfg_ofs; |
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|
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p = krealloc(si->si_ptrs.pcfg, si->si_ofs.pcfg_size, GFP_KERNEL); |
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if (p == NULL) { |
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dev_err(cd->dev, "%s: failed to allocate pcfg memory\n", |
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__func__); |
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return -ENOMEM; |
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} |
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si->si_ptrs.pcfg = p; |
|
|
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rc = cyttsp4_adap_read(cd, si->si_ofs.pcfg_ofs, si->si_ofs.pcfg_size, |
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si->si_ptrs.pcfg); |
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if (rc < 0) { |
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dev_err(cd->dev, "%s: fail read pcfg data r=%d\n", |
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__func__, rc); |
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return rc; |
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} |
|
|
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si->si_ofs.max_x = merge_bytes((si->si_ptrs.pcfg->res_xh |
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& CY_PCFG_RESOLUTION_X_MASK), si->si_ptrs.pcfg->res_xl); |
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si->si_ofs.x_origin = !!(si->si_ptrs.pcfg->res_xh |
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& CY_PCFG_ORIGIN_X_MASK); |
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si->si_ofs.max_y = merge_bytes((si->si_ptrs.pcfg->res_yh |
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& CY_PCFG_RESOLUTION_Y_MASK), si->si_ptrs.pcfg->res_yl); |
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si->si_ofs.y_origin = !!(si->si_ptrs.pcfg->res_yh |
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& CY_PCFG_ORIGIN_Y_MASK); |
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si->si_ofs.max_p = merge_bytes(si->si_ptrs.pcfg->max_zh, |
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si->si_ptrs.pcfg->max_zl); |
|
|
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cyttsp4_pr_buf(cd->dev, cd->pr_buf, |
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(u8 *)si->si_ptrs.pcfg, |
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si->si_ofs.pcfg_size, "sysinfo_pcfg_data"); |
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return rc; |
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} |
|
|
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static int cyttsp4_si_get_opcfg_data(struct cyttsp4 *cd) |
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{ |
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struct cyttsp4_sysinfo *si = &cd->sysinfo; |
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struct cyttsp4_tch_abs_params *tch; |
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struct cyttsp4_tch_rec_params *tch_old, *tch_new; |
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enum cyttsp4_tch_abs abs; |
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int i; |
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void *p; |
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int rc; |
|
|
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if (si->si_ofs.ddata_ofs <= si->si_ofs.opcfg_ofs) { |
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dev_err(cd->dev, |
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"%s: invalid offset ddata_ofs: %zu, opcfg_ofs: %zu\n", |
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__func__, si->si_ofs.ddata_ofs, si->si_ofs.opcfg_ofs); |
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return -EINVAL; |
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} |
|
|
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si->si_ofs.opcfg_size = si->si_ofs.ddata_ofs - si->si_ofs.opcfg_ofs; |
|
|
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p = krealloc(si->si_ptrs.opcfg, si->si_ofs.opcfg_size, GFP_KERNEL); |
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if (p == NULL) { |
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dev_err(cd->dev, "%s: failed to allocate opcfg memory\n", |
|
__func__); |
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return -ENOMEM; |
|
} |
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si->si_ptrs.opcfg = p; |
|
|
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rc = cyttsp4_adap_read(cd, si->si_ofs.opcfg_ofs, si->si_ofs.opcfg_size, |
|
si->si_ptrs.opcfg); |
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if (rc < 0) { |
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dev_err(cd->dev, "%s: fail read opcfg data r=%d\n", |
|
__func__, rc); |
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return rc; |
|
} |
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si->si_ofs.cmd_ofs = si->si_ptrs.opcfg->cmd_ofs; |
|
si->si_ofs.rep_ofs = si->si_ptrs.opcfg->rep_ofs; |
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si->si_ofs.rep_sz = (si->si_ptrs.opcfg->rep_szh * 256) + |
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si->si_ptrs.opcfg->rep_szl; |
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si->si_ofs.num_btns = si->si_ptrs.opcfg->num_btns; |
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si->si_ofs.num_btn_regs = (si->si_ofs.num_btns + |
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CY_NUM_BTN_PER_REG - 1) / CY_NUM_BTN_PER_REG; |
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si->si_ofs.tt_stat_ofs = si->si_ptrs.opcfg->tt_stat_ofs; |
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si->si_ofs.obj_cfg0 = si->si_ptrs.opcfg->obj_cfg0; |
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si->si_ofs.max_tchs = si->si_ptrs.opcfg->max_tchs & |
|
CY_BYTE_OFS_MASK; |
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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]; |
|
|
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tch->ofs = tch_old->loc & CY_BYTE_OFS_MASK; |
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tch->size = cyttsp4_bits_2_bytes(tch_old->size, |
|
&tch->max); |
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tch->bofs = (tch_old->loc & CY_BOFS_MASK) >> CY_BOFS_SHIFT; |
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} |
|
|
|
/* button fields */ |
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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; |
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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]; |
|
|
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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"); |
|
|
|
return 0; |
|
} |
|
|
|
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_inactive(md->input); |
|
} |
|
} |
|
|
|
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; |
|
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) { |
|
swap(touch->abs[CY_TCH_X], touch->abs[CY_TCH_Y]); |
|
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_inactive(input); |
|
} |
|
|
|
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(struct timer_list *t) |
|
{ |
|
struct cyttsp4 *cd = from_timer(cd, t, watchdog_timer); |
|
|
|
dev_vdbg(cd->dev, "%s: Watchdog timer triggered\n", __func__); |
|
|
|
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; |
|
|
|
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 BOOTLOADER 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_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); |
|
} |
|
|
|
#ifdef CONFIG_PM |
|
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_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; |
|
|
|
rc = cyttsp4_setup_input_device(cd); |
|
if (rc) |
|
goto error_init_input; |
|
|
|
return 0; |
|
|
|
error_init_input: |
|
input_free_device(md->input); |
|
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_free_cd; |
|
} |
|
|
|
/* 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_free_xfer; |
|
} |
|
|
|
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 */ |
|
timer_setup(&cd->watchdog_timer, cyttsp4_watchdog_timer, 0); |
|
|
|
/* |
|
* 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); |
|
error_free_xfer: |
|
kfree(cd->xfer_buf); |
|
error_free_cd: |
|
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); |
|
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");
|
|
|