int pm8058_gpio_config_kypd_drv(int gpio_start, int num_gpios, unsigned mach_id)
{
int rc;
struct pm8058_gpio kypd_drv = {
.direction = PM_GPIO_DIR_OUT,
.pull = PM_GPIO_PULL_NO,
.vin_sel = 2,
.out_strength = PM_GPIO_STRENGTH_LOW,
.function = PM_GPIO_FUNC_1,
.inv_int_pol = 1,
};
if(mach_id == LINUX_MACHTYPE_8660_QT)
kypd_drv.function = PM_GPIO_FUNC_NORMAL;
while (num_gpios--) {
rc = pm8058_gpio_config(gpio_start++, &kypd_drv);
if (rc) {
dprintf(INFO, "FAIL pm8058_gpio_config(): rc=%d.\n", rc);
return rc;
}
}
return 0;
}
int pm8058_gpio_config_kypd_sns(int gpio_start, int num_gpios)
{
int rc;
struct pm8058_gpio kypd_sns = {
.direction = PM_GPIO_DIR_IN,
.pull = PM_GPIO_PULL_UP1,
.vin_sel = 2,
.out_strength = PM_GPIO_STRENGTH_NO,
.function = PM_GPIO_FUNC_NORMAL,
.inv_int_pol = 1,
};
while (num_gpios--) {
rc = pm8058_gpio_config(gpio_start++, &kypd_sns);
if (rc) {
dprintf(INFO, "FAIL pm8058_gpio_config(): rc=%d.\n", rc);
return rc;
}
}
return 0;
}
static void ssbi_gpio_init(unsigned int mach_id)
{
unsigned char kypd_cntl_init;
unsigned char kypd_scan_init = 0x20;
int rows = (qwerty_keypad->keypad_info)->rows;
int columns = (qwerty_keypad->keypad_info)->columns;
write_func wr_function = (qwerty_keypad->keypad_info)->wr_func;
unsigned char drv_bits[] = {
0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7 };
unsigned char sns_bits[] = { 0, 0, 0, 0, 0, 0, 1, 2, 3 };
kypd_cntl_init = ((drv_bits[rows] << 2) | (sns_bits[columns] << 5) | (1 << 7));
if ((*wr_function)(&kypd_cntl_init, 1, SSBI_REG_KYPD_CNTL_ADDR))
dprintf (CRITICAL, "Error in initializing SSBI_REG_KYPD_CNTL register\n");
if ((*wr_function)(&kypd_scan_init, 1, SSBI_REG_KYPD_SCAN_ADDR))
dprintf (CRITICAL, "Error in initializing SSBI_REG_KYPD_SCAN register\n");
if(mach_id == LINUX_MACHTYPE_8660_QT)
{
pm8058_gpio_config_kypd_sns(QT_PMIC_GPIO_KYPD_SNS, rows);
pm8058_gpio_config_kypd_drv(QT_PMIC_GPIO_KYPD_DRV, columns, mach_id);
}
else
{
pm8058_gpio_config_kypd_sns(SSBI_OFFSET_ADDR_GPIO_KYPD_SNS, columns);
pm8058_gpio_config_kypd_drv(SSBI_OFFSET_ADDR_GPIO_KYPD_DRV, rows, mach_id);
}
}
/*
* keypad controller should be initialized in the following sequence
* only, otherwise it might get into FSM stuck state.
*
* - Initialize keypad control parameters, like no. of rows, columns,
* timing values etc.,
* - configure rows and column gpios pull up/down.
* - set irq edge type.
* - enable the keypad controller.
*/
static int __devinit pmic8058_kp_probe(struct platform_device *pdev)
{
struct pmic8058_keypad_data *pdata = pdev->dev.platform_data;
struct pmic8058_kp *kp;
int rc, i;
unsigned short *keycodes;
u8 ctrl_val;
if (!pdata || !pdata->num_cols || !pdata->num_rows ||
pdata->num_cols > MATRIX_MAX_COLS ||
pdata->num_rows > MATRIX_MAX_ROWS ||
!pdata->keymap) {
dev_err(&pdev->dev, "invalid platform data\n");
return -EINVAL;
}
if (pdata->rows_gpio_start < 0 || pdata->cols_gpio_start < 0) {
dev_err(&pdev->dev, "invalid gpio_start platform data\n");
return -EINVAL;
}
if (!pdata->scan_delay_ms || pdata->scan_delay_ms > MAX_SCAN_DELAY
|| pdata->scan_delay_ms < MIN_SCAN_DELAY ||
!is_power_of_2(pdata->scan_delay_ms)) {
dev_err(&pdev->dev, "invalid keypad scan time supplied\n");
return -EINVAL;
}
rc = pm8058_read(PM8058_REV, &rev, 1);
pr_info("PMIC4 is at %X revision\n", rev);
if (rev == PMIC8058_REV_A0) {
if (!pdata->debounce_ms || !is_power_of_2(pdata->debounce_ms)
|| pdata->debounce_ms > MAX_DEBOUNCE_A0_TIME
|| pdata->debounce_ms < MIN_DEBOUNCE_A0_TIME) {
dev_err(&pdev->dev, "invalid debounce time supplied\n");
return -EINVAL;
}
} else {
if (!pdata->debounce_ms || ((pdata->debounce_ms % 5) != 0)
|| pdata->debounce_ms > MAX_DEBOUNCE_B0_TIME
|| pdata->debounce_ms < MIN_DEBOUNCE_B0_TIME) {
dev_err(&pdev->dev, "invalid debounce time supplied\n");
return -EINVAL;
}
}
kp = kzalloc(sizeof(*kp), GFP_KERNEL);
if (!kp)
return -ENOMEM;
keycodes = kzalloc(MATRIX_MAX_SIZE * sizeof(keycodes), GFP_KERNEL);
if (!keycodes) {
rc = -ENOMEM;
goto err_alloc_mem;
}
platform_set_drvdata(pdev, kp);
kp->pdata = pdata;
kp->dev = &pdev->dev;
kp->keycodes = keycodes;
/* REVISIT: actual revision with the fix */
if (rev <= PMIC8058_REV_B0)
kp->flags |= KEYF_FIX_LAST_ROW;
kp->input = input_allocate_device();
if (!kp->input) {
dev_err(&pdev->dev, "unable to allocate input device\n");
rc = -ENOMEM;
goto err_alloc_device;
}
kp->key_sense_irq = platform_get_irq(pdev, 0);
if (kp->key_sense_irq < 0) {
dev_err(&pdev->dev, "unable to get keypad sense irq\n");
rc = -ENXIO;
goto err_get_irq;
}
kp->key_stuck_irq = platform_get_irq(pdev, 1);
if (kp->key_stuck_irq < 0) {
dev_err(&pdev->dev, "unable to get keypad stuck irq\n");
rc = -ENXIO;
goto err_get_irq;
}
if (pdata->input_name)
kp->input->name = pdata->input_name;
else
kp->input->name = "PMIC8058 keypad";
if (pdata->input_phys_device)
kp->input->phys = pdata->input_phys_device;
else
kp->input->phys = "pmic8058_keypad/input0";
kp->input->dev.parent = &pdev->dev;
kp->input->id.bustype = BUS_HOST;
kp->input->id.version = 0x0001;
kp->input->id.product = 0x0001;
kp->input->id.vendor = 0x0001;
kp->input->evbit[0] = BIT_MASK(EV_KEY);
if (pdata->rep)
__set_bit(EV_REP, kp->input->evbit);
kp->input->keycode = keycodes;
kp->input->keycodemax = MATRIX_MAX_SIZE;
kp->input->keycodesize = sizeof(*keycodes);
/* build keycodes for faster scanning */
for (i = 0; i < pdata->keymap_size; i++) {
unsigned int row = KEY_ROW(pdata->keymap[i]);
unsigned int col = KEY_COL(pdata->keymap[i]);
unsigned short keycode = KEY_VAL(pdata->keymap[i]);
keycodes[(row << 3) + col] = keycode;
__set_bit(keycode, kp->input->keybit);
}
__clear_bit(KEY_RESERVED, kp->input->keybit);
input_set_capability(kp->input, EV_MSC, MSC_SCAN);
input_set_drvdata(kp->input, kp);
rc = input_register_device(kp->input);
if (rc < 0) {
dev_err(&pdev->dev, "unable to register keypad input device\n");
goto err_get_irq;
}
/* initialize keypad state */
memset(kp->keystate, 0xff, sizeof(kp->keystate));
rc = pmic8058_kpd_init(kp);
if (rc < 0) {
dev_err(&pdev->dev, "unable to initialize keypad controller\n");
goto err_kpd_init;
}
rc = pm8058_gpio_config_kypd_sns(pdata->cols_gpio_start,
pdata->num_cols);
if (rc < 0) {
dev_err(&pdev->dev, "unable to configure keypad sense lines\n");
goto err_gpio_config;
}
rc = pm8058_gpio_config_kypd_drv(pdata->rows_gpio_start,
pdata->num_rows);
if (rc < 0) {
dev_err(&pdev->dev, "unable to configure keypad drive lines\n");
goto err_gpio_config;
}
rc = request_irq(kp->key_sense_irq, pmic8058_kp_irq,
IRQF_TRIGGER_RISING, "pmic-keypad", kp);
if (rc < 0) {
dev_err(&pdev->dev, "failed to request keypad sense irq\n");
goto err_req_sense_irq;
}
rc = request_irq(kp->key_stuck_irq, pmic8058_kp_stuck_irq,
IRQF_TRIGGER_RISING, "pmic-keypad-stuck", kp);
if (rc < 0) {
dev_err(&pdev->dev, "failed to request keypad stuck irq\n");
goto err_req_stuck_irq;
}
rc = pmic8058_kp_read(kp, &ctrl_val, KEYP_CTRL, 1);
ctrl_val |= KEYP_CTRL_KEYP_EN;
rc = pmic8058_kp_write_u8(kp, ctrl_val, KEYP_CTRL);
__dump_kp_regs(kp, "probe");
device_init_wakeup(&pdev->dev, pdata->wakeup);
return 0;
err_req_stuck_irq:
free_irq(kp->key_sense_irq, NULL);
err_req_sense_irq:
err_gpio_config:
err_kpd_init:
input_unregister_device(kp->input);
kp->input = NULL;
err_get_irq:
input_free_device(kp->input);
err_alloc_device:
kfree(keycodes);
err_alloc_mem:
kfree(kp);
return rc;
}