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Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/keyboard/Kconfig2
-rw-r--r--drivers/input/keyboard/tegra-kbc.c195
2 files changed, 93 insertions, 104 deletions
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 72377737eec..992137cf3a6 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -420,7 +420,7 @@ config KEYBOARD_NOMADIK
config KEYBOARD_TEGRA
tristate "NVIDIA Tegra internal matrix keyboard controller support"
- depends on ARCH_TEGRA
+ depends on ARCH_TEGRA && OF
select INPUT_MATRIXKMAP
help
Say Y here if you want to use a matrix keyboard connected directly
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
index 4526bdd3602..d89e7d392d1 100644
--- a/drivers/input/keyboard/tegra-kbc.c
+++ b/drivers/input/keyboard/tegra-kbc.c
@@ -29,9 +29,16 @@
#include <linux/of.h>
#include <linux/clk.h>
#include <linux/slab.h>
-#include <linux/input/tegra_kbc.h>
+#include <linux/input/matrix_keypad.h>
#include <mach/clk.h>
+#define KBC_MAX_GPIO 24
+#define KBC_MAX_KPENT 8
+
+#define KBC_MAX_ROW 16
+#define KBC_MAX_COL 8
+#define KBC_MAX_KEY (KBC_MAX_ROW * KBC_MAX_COL)
+
#define KBC_MAX_DEBOUNCE_CNT 0x3ffu
/* KBC row scan time and delay for beginning the row scan. */
@@ -67,10 +74,27 @@
#define KBC_ROW_SHIFT 3
+enum tegra_pin_type {
+ PIN_CFG_IGNORE,
+ PIN_CFG_COL,
+ PIN_CFG_ROW,
+};
+
+struct tegra_kbc_pin_cfg {
+ enum tegra_pin_type type;
+ unsigned char num;
+};
+
struct tegra_kbc {
+ struct device *dev;
+ unsigned int debounce_cnt;
+ unsigned int repeat_cnt;
+ struct tegra_kbc_pin_cfg pin_cfg[KBC_MAX_GPIO];
+ const struct matrix_keymap_data *keymap_data;
+ bool wakeup;
void __iomem *mmio;
struct input_dev *idev;
- unsigned int irq;
+ int irq;
spinlock_t lock;
unsigned int repoll_dly;
unsigned long cp_dly_jiffies;
@@ -78,7 +102,6 @@ struct tegra_kbc {
bool use_fn_map;
bool use_ghost_filter;
bool keypress_caused_wake;
- const struct tegra_kbc_platform_data *pdata;
unsigned short keycode[KBC_MAX_KEY * 2];
unsigned short current_keys[KBC_MAX_KPENT];
unsigned int num_pressed_keys;
@@ -286,12 +309,11 @@ static irqreturn_t tegra_kbc_isr(int irq, void *args)
static void tegra_kbc_setup_wakekeys(struct tegra_kbc *kbc, bool filter)
{
- const struct tegra_kbc_platform_data *pdata = kbc->pdata;
int i;
unsigned int rst_val;
/* Either mask all keys or none. */
- rst_val = (filter && !pdata->wakeup) ? ~0 : 0;
+ rst_val = (filter && !kbc->wakeup) ? ~0 : 0;
for (i = 0; i < KBC_MAX_ROW; i++)
writel(rst_val, kbc->mmio + KBC_ROW0_MASK_0 + i * 4);
@@ -299,7 +321,6 @@ static void tegra_kbc_setup_wakekeys(struct tegra_kbc *kbc, bool filter)
static void tegra_kbc_config_pins(struct tegra_kbc *kbc)
{
- const struct tegra_kbc_platform_data *pdata = kbc->pdata;
int i;
for (i = 0; i < KBC_MAX_GPIO; i++) {
@@ -315,13 +336,13 @@ static void tegra_kbc_config_pins(struct tegra_kbc *kbc)
row_cfg &= ~r_mask;
col_cfg &= ~c_mask;
- switch (pdata->pin_cfg[i].type) {
+ switch (kbc->pin_cfg[i].type) {
case PIN_CFG_ROW:
- row_cfg |= ((pdata->pin_cfg[i].num << 1) | 1) << r_shft;
+ row_cfg |= ((kbc->pin_cfg[i].num << 1) | 1) << r_shft;
break;
case PIN_CFG_COL:
- col_cfg |= ((pdata->pin_cfg[i].num << 1) | 1) << c_shft;
+ col_cfg |= ((kbc->pin_cfg[i].num << 1) | 1) << c_shft;
break;
case PIN_CFG_IGNORE:
@@ -335,7 +356,6 @@ static void tegra_kbc_config_pins(struct tegra_kbc *kbc)
static int tegra_kbc_start(struct tegra_kbc *kbc)
{
- const struct tegra_kbc_platform_data *pdata = kbc->pdata;
unsigned int debounce_cnt;
u32 val = 0;
@@ -350,10 +370,10 @@ static int tegra_kbc_start(struct tegra_kbc *kbc)
tegra_kbc_config_pins(kbc);
tegra_kbc_setup_wakekeys(kbc, false);
- writel(pdata->repeat_cnt, kbc->mmio + KBC_RPT_DLY_0);
+ writel(kbc->repeat_cnt, kbc->mmio + KBC_RPT_DLY_0);
/* Keyboard debounce count is maximum of 12 bits. */
- debounce_cnt = min(pdata->debounce_cnt, KBC_MAX_DEBOUNCE_CNT);
+ debounce_cnt = min(kbc->debounce_cnt, KBC_MAX_DEBOUNCE_CNT);
val = KBC_DEBOUNCE_CNT_SHIFT(debounce_cnt);
val |= KBC_FIFO_TH_CNT_SHIFT(1); /* set fifo interrupt threshold to 1 */
val |= KBC_CONTROL_FIFO_CNT_INT_EN; /* interrupt on FIFO threshold */
@@ -420,21 +440,20 @@ static void tegra_kbc_close(struct input_dev *dev)
return tegra_kbc_stop(kbc);
}
-static bool
-tegra_kbc_check_pin_cfg(const struct tegra_kbc_platform_data *pdata,
- struct device *dev, unsigned int *num_rows)
+static bool tegra_kbc_check_pin_cfg(const struct tegra_kbc *kbc,
+ unsigned int *num_rows)
{
int i;
*num_rows = 0;
for (i = 0; i < KBC_MAX_GPIO; i++) {
- const struct tegra_kbc_pin_cfg *pin_cfg = &pdata->pin_cfg[i];
+ const struct tegra_kbc_pin_cfg *pin_cfg = &kbc->pin_cfg[i];
switch (pin_cfg->type) {
case PIN_CFG_ROW:
if (pin_cfg->num >= KBC_MAX_ROW) {
- dev_err(dev,
+ dev_err(kbc->dev,
"pin_cfg[%d]: invalid row number %d\n",
i, pin_cfg->num);
return false;
@@ -444,7 +463,7 @@ tegra_kbc_check_pin_cfg(const struct tegra_kbc_platform_data *pdata,
case PIN_CFG_COL:
if (pin_cfg->num >= KBC_MAX_COL) {
- dev_err(dev,
+ dev_err(kbc->dev,
"pin_cfg[%d]: invalid column number %d\n",
i, pin_cfg->num);
return false;
@@ -455,7 +474,7 @@ tegra_kbc_check_pin_cfg(const struct tegra_kbc_platform_data *pdata,
break;
default:
- dev_err(dev,
+ dev_err(kbc->dev,
"pin_cfg[%d]: invalid entry type %d\n",
pin_cfg->type, pin_cfg->num);
return false;
@@ -465,12 +484,9 @@ tegra_kbc_check_pin_cfg(const struct tegra_kbc_platform_data *pdata,
return true;
}
-#ifdef CONFIG_OF
-static struct tegra_kbc_platform_data *tegra_kbc_dt_parse_pdata(
- struct platform_device *pdev)
+static int tegra_kbc_parse_dt(struct tegra_kbc *kbc)
{
- struct tegra_kbc_platform_data *pdata;
- struct device_node *np = pdev->dev.of_node;
+ struct device_node *np = kbc->dev->of_node;
u32 prop;
int i;
u32 num_rows = 0;
@@ -480,109 +496,96 @@ static struct tegra_kbc_platform_data *tegra_kbc_dt_parse_pdata(
int proplen;
int ret;
- if (!np) {
- dev_err(&pdev->dev, "device tree data is missing\n");
- return ERR_PTR(-ENOENT);
- }
-
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return ERR_PTR(-ENOMEM);
-
if (!of_property_read_u32(np, "nvidia,debounce-delay-ms", &prop))
- pdata->debounce_cnt = prop;
+ kbc->debounce_cnt = prop;
if (!of_property_read_u32(np, "nvidia,repeat-delay-ms", &prop))
- pdata->repeat_cnt = prop;
+ kbc->repeat_cnt = prop;
if (of_find_property(np, "nvidia,needs-ghost-filter", NULL))
- pdata->use_ghost_filter = true;
+ kbc->use_ghost_filter = true;
if (of_find_property(np, "nvidia,wakeup-source", NULL))
- pdata->wakeup = true;
+ kbc->wakeup = true;
if (!of_get_property(np, "nvidia,kbc-row-pins", &proplen)) {
- dev_err(&pdev->dev, "property nvidia,kbc-row-pins not found\n");
- return ERR_PTR(-ENOENT);
+ dev_err(kbc->dev, "property nvidia,kbc-row-pins not found\n");
+ return -ENOENT;
}
num_rows = proplen / sizeof(u32);
if (!of_get_property(np, "nvidia,kbc-col-pins", &proplen)) {
- dev_err(&pdev->dev, "property nvidia,kbc-col-pins not found\n");
- return ERR_PTR(-ENOENT);
+ dev_err(kbc->dev, "property nvidia,kbc-col-pins not found\n");
+ return -ENOENT;
}
num_cols = proplen / sizeof(u32);
if (!of_get_property(np, "linux,keymap", &proplen)) {
- dev_err(&pdev->dev, "property linux,keymap not found\n");
- return ERR_PTR(-ENOENT);
+ dev_err(kbc->dev, "property linux,keymap not found\n");
+ return -ENOENT;
}
if (!num_rows || !num_cols || ((num_rows + num_cols) > KBC_MAX_GPIO)) {
- dev_err(&pdev->dev,
+ dev_err(kbc->dev,
"keypad rows/columns not porperly specified\n");
- return ERR_PTR(-EINVAL);
+ return -EINVAL;
}
/* Set all pins as non-configured */
for (i = 0; i < KBC_MAX_GPIO; i++)
- pdata->pin_cfg[i].type = PIN_CFG_IGNORE;
+ kbc->pin_cfg[i].type = PIN_CFG_IGNORE;
ret = of_property_read_u32_array(np, "nvidia,kbc-row-pins",
rows_cfg, num_rows);
if (ret < 0) {
- dev_err(&pdev->dev, "Rows configurations are not proper\n");
- return ERR_PTR(-EINVAL);
+ dev_err(kbc->dev, "Rows configurations are not proper\n");
+ return -EINVAL;
}
ret = of_property_read_u32_array(np, "nvidia,kbc-col-pins",
cols_cfg, num_cols);
if (ret < 0) {
- dev_err(&pdev->dev, "Cols configurations are not proper\n");
- return ERR_PTR(-EINVAL);
+ dev_err(kbc->dev, "Cols configurations are not proper\n");
+ return -EINVAL;
}
for (i = 0; i < num_rows; i++) {
- pdata->pin_cfg[rows_cfg[i]].type = PIN_CFG_ROW;
- pdata->pin_cfg[rows_cfg[i]].num = i;
+ kbc->pin_cfg[rows_cfg[i]].type = PIN_CFG_ROW;
+ kbc->pin_cfg[rows_cfg[i]].num = i;
}
for (i = 0; i < num_cols; i++) {
- pdata->pin_cfg[cols_cfg[i]].type = PIN_CFG_COL;
- pdata->pin_cfg[cols_cfg[i]].num = i;
+ kbc->pin_cfg[cols_cfg[i]].type = PIN_CFG_COL;
+ kbc->pin_cfg[cols_cfg[i]].num = i;
}
- return pdata;
-}
-#else
-static inline struct tegra_kbc_platform_data *tegra_kbc_dt_parse_pdata(
- struct platform_device *pdev)
-{
- dev_err(&pdev->dev, "platform data is missing\n");
- return ERR_PTR(-EINVAL);
+ return 0;
}
-#endif
static int tegra_kbc_probe(struct platform_device *pdev)
{
- const struct tegra_kbc_platform_data *pdata = pdev->dev.platform_data;
struct tegra_kbc *kbc;
- struct input_dev *input_dev;
struct resource *res;
- int irq;
int err;
int num_rows = 0;
unsigned int debounce_cnt;
unsigned int scan_time_rows;
unsigned int keymap_rows = KBC_MAX_KEY;
- if (!pdata)
- pdata = tegra_kbc_dt_parse_pdata(pdev);
+ kbc = devm_kzalloc(&pdev->dev, sizeof(*kbc), GFP_KERNEL);
+ if (!kbc) {
+ dev_err(&pdev->dev, "failed to alloc memory for kbc\n");
+ return -ENOMEM;
+ }
+
+ kbc->dev = &pdev->dev;
+ spin_lock_init(&kbc->lock);
- if (IS_ERR(pdata))
- return PTR_ERR(pdata);
+ err = tegra_kbc_parse_dt(kbc);
+ if (err)
+ return err;
- if (!tegra_kbc_check_pin_cfg(pdata, &pdev->dev, &num_rows))
+ if (!tegra_kbc_check_pin_cfg(kbc, &num_rows))
return -EINVAL;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -591,28 +594,18 @@ static int tegra_kbc_probe(struct platform_device *pdev)
return -ENXIO;
}
- irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
+ kbc->irq = platform_get_irq(pdev, 0);
+ if (kbc->irq < 0) {
dev_err(&pdev->dev, "failed to get keyboard IRQ\n");
return -ENXIO;
}
- kbc = devm_kzalloc(&pdev->dev, sizeof(*kbc), GFP_KERNEL);
- if (!kbc) {
- dev_err(&pdev->dev, "failed to alloc memory for kbc\n");
- return -ENOMEM;
- }
-
- input_dev = devm_input_allocate_device(&pdev->dev);
- if (!input_dev) {
+ kbc->idev = devm_input_allocate_device(&pdev->dev);
+ if (!kbc->idev) {
dev_err(&pdev->dev, "failed to allocate input device\n");
return -ENOMEM;
}
- kbc->pdata = pdata;
- kbc->idev = input_dev;
- kbc->irq = irq;
- spin_lock_init(&kbc->lock);
setup_timer(&kbc->timer, tegra_kbc_keypress_timer, (unsigned long)kbc);
kbc->mmio = devm_request_and_ioremap(&pdev->dev, res);
@@ -633,36 +626,32 @@ static int tegra_kbc_probe(struct platform_device *pdev)
* the rows. There is an additional delay before the row scanning
* starts. The repoll delay is computed in milliseconds.
*/
- debounce_cnt = min(pdata->debounce_cnt, KBC_MAX_DEBOUNCE_CNT);
+ debounce_cnt = min(kbc->debounce_cnt, KBC_MAX_DEBOUNCE_CNT);
scan_time_rows = (KBC_ROW_SCAN_TIME + debounce_cnt) * num_rows;
- kbc->repoll_dly = KBC_ROW_SCAN_DLY + scan_time_rows + pdata->repeat_cnt;
+ kbc->repoll_dly = KBC_ROW_SCAN_DLY + scan_time_rows + kbc->repeat_cnt;
kbc->repoll_dly = DIV_ROUND_UP(kbc->repoll_dly, KBC_CYCLE_MS);
- kbc->wakeup_key = pdata->wakeup_key;
- kbc->use_fn_map = pdata->use_fn_map;
- kbc->use_ghost_filter = pdata->use_ghost_filter;
-
- input_dev->name = pdev->name;
- input_dev->id.bustype = BUS_HOST;
- input_dev->dev.parent = &pdev->dev;
- input_dev->open = tegra_kbc_open;
- input_dev->close = tegra_kbc_close;
+ kbc->idev->name = pdev->name;
+ kbc->idev->id.bustype = BUS_HOST;
+ kbc->idev->dev.parent = &pdev->dev;
+ kbc->idev->open = tegra_kbc_open;
+ kbc->idev->close = tegra_kbc_close;
- if (pdata->keymap_data && pdata->use_fn_map)
+ if (kbc->keymap_data && kbc->use_fn_map)
keymap_rows *= 2;
- err = matrix_keypad_build_keymap(pdata->keymap_data, NULL,
+ err = matrix_keypad_build_keymap(kbc->keymap_data, NULL,
keymap_rows, KBC_MAX_COL,
- kbc->keycode, input_dev);
+ kbc->keycode, kbc->idev);
if (err) {
dev_err(&pdev->dev, "failed to setup keymap\n");
return err;
}
- __set_bit(EV_REP, input_dev->evbit);
- input_set_capability(input_dev, EV_MSC, MSC_SCAN);
+ __set_bit(EV_REP, kbc->idev->evbit);
+ input_set_capability(kbc->idev, EV_MSC, MSC_SCAN);
- input_set_drvdata(input_dev, kbc);
+ input_set_drvdata(kbc->idev, kbc);
err = devm_request_irq(&pdev->dev, kbc->irq, tegra_kbc_isr,
IRQF_NO_SUSPEND | IRQF_TRIGGER_HIGH, pdev->name, kbc);
@@ -680,7 +669,7 @@ static int tegra_kbc_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, kbc);
- device_init_wakeup(&pdev->dev, pdata->wakeup);
+ device_init_wakeup(&pdev->dev, kbc->wakeup);
return 0;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-12 23:08:01 +0000