}
#ifdef CONFIG_OF
-static struct tegra_kbc_platform_data * __devinit
-tegra_kbc_dt_parse_pdata(struct platform_device *pdev)
+static struct tegra_kbc_platform_data * __devinit tegra_kbc_dt_parse_pdata(
+ struct platform_device *pdev)
{
struct tegra_kbc_platform_data *pdata;
struct device_node *np = pdev->dev.of_node;
pdata->pin_cfg[KBC_MAX_ROW + i].type = PIN_CFG_COL;
}
- pdata->keymap_data = matrix_keyboard_of_fill_keymap(np, "linux,keymap");
-
- /* FIXME: Add handling of linux,fn-keymap here */
-
return pdata;
}
#else
}
#endif
+static int __devinit tegra_kbd_setup_keymap(struct tegra_kbc *kbc)
+{
+ const struct tegra_kbc_platform_data *pdata = kbc->pdata;
+ const struct matrix_keymap_data *keymap_data = pdata->keymap_data;
+ unsigned int keymap_rows = KBC_MAX_KEY;
+ int retval;
+
+ if (keymap_data && pdata->use_fn_map)
+ keymap_rows *= 2;
+
+ retval = matrix_keypad_build_keymap(keymap_data, NULL,
+ keymap_rows, KBC_MAX_COL,
+ kbc->keycode, kbc->idev);
+ if (retval == -ENOSYS || retval == -ENOENT) {
+ /*
+ * If there is no OF support in kernel or keymap
+ * property is missing, use default keymap.
+ */
+ retval = matrix_keypad_build_keymap(
+ &tegra_kbc_default_keymap_data, NULL,
+ keymap_rows, KBC_MAX_COL,
+ kbc->keycode, kbc->idev);
+ }
+
+ return retval;
+}
+
static int __devinit tegra_kbc_probe(struct platform_device *pdev)
{
const struct tegra_kbc_platform_data *pdata = pdev->dev.platform_data;
- const struct matrix_keymap_data *keymap_data;
struct tegra_kbc *kbc;
struct input_dev *input_dev;
struct resource *res;
int num_rows = 0;
unsigned int debounce_cnt;
unsigned int scan_time_rows;
- unsigned int keymap_rows;
if (!pdata)
pdata = tegra_kbc_dt_parse_pdata(pdev);
input_dev->open = tegra_kbc_open;
input_dev->close = tegra_kbc_close;
- keymap_rows = KBC_MAX_KEY;
- if (pdata->use_fn_map)
- keymap_rows *= 2;
-
- keymap_data = pdata->keymap_data ?: &tegra_kbc_default_keymap_data;
-
- err = matrix_keypad_build_keymap(keymap_data, NULL,
- keymap_rows, KBC_MAX_COL,
- kbc->keycode, input_dev);
+ err = tegra_kbd_setup_keymap(kbc);
if (err) {
- dev_err(&pdev->dev, "failed to build keymap\n");
+ dev_err(&pdev->dev, "failed to setup keymap\n");
goto err_put_clk;
}
platform_set_drvdata(pdev, kbc);
device_init_wakeup(&pdev->dev, pdata->wakeup);
- if (!pdev->dev.platform_data)
- matrix_keyboard_of_free_keymap(pdata->keymap_data);
-
return 0;
err_free_irq:
input_free_device(input_dev);
kfree(kbc);
err_free_pdata:
- if (!pdev->dev.platform_data) {
- matrix_keyboard_of_free_keymap(pdata->keymap_data);
+ if (!pdev->dev.platform_data)
kfree(pdata);
- }
return err;
}
*
*/
+#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/input.h>
#include <linux/of.h>
#include <linux/export.h>
-#include <linux/gfp.h>
-#include <linux/slab.h>
#include <linux/input/matrix_keypad.h>
+static bool matrix_keypad_map_key(struct input_dev *input_dev,
+ unsigned int rows, unsigned int cols,
+ unsigned int row_shift, unsigned int key)
+{
+ unsigned char *keymap = input_dev->keycode;
+ unsigned int row = KEY_ROW(key);
+ unsigned int col = KEY_COL(key);
+ unsigned short code = KEY_VAL(key);
+
+ if (row >= rows || col >= cols) {
+ dev_err(input_dev->dev.parent,
+ "%s: invalid keymap entry 0x%x (row: %d, col: %d, rows: %d, cols: %d)\n",
+ __func__, key, row, col, rows, cols);
+ return false;
+ }
+
+ keymap[MATRIX_SCAN_CODE(row, col, row_shift)] = code;
+ __set_bit(code, input_dev->keybit);
+
+ return true;
+}
+
+#ifdef CONFIG_OF
+static int matrix_keypad_parse_of_keymap(const char *propname,
+ unsigned int rows, unsigned int cols,
+ struct input_dev *input_dev)
+{
+ struct device *dev = input_dev->dev.parent;
+ struct device_node *np = dev->of_node;
+ unsigned int row_shift = get_count_order(cols);
+ unsigned int max_keys = rows << row_shift;
+ unsigned int proplen, i, size;
+ const __be32 *prop;
+
+ if (!np)
+ return -ENOENT;
+
+ if (!propname)
+ propname = "linux,keymap";
+
+ prop = of_get_property(np, propname, &proplen);
+ if (!prop) {
+ dev_err(dev, "OF: %s property not defined in %s\n",
+ propname, np->full_name);
+ return -ENOENT;
+ }
+
+ if (proplen % sizeof(u32)) {
+ dev_err(dev, "OF: Malformed keycode property %s in %s\n",
+ propname, np->full_name);
+ return -EINVAL;
+ }
+
+ size = proplen / sizeof(u32);
+ if (size > max_keys) {
+ dev_err(dev, "OF: %s size overflow\n", propname);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < size; i++) {
+ unsigned int key = be32_to_cpup(prop + i);
+
+ if (!matrix_keypad_map_key(input_dev, rows, cols,
+ row_shift, key))
+ return -EINVAL;
+ }
+
+ return 0;
+}
+#else
+static int matrix_keypad_parse_of_keymap(const char *propname,
+ unsigned int rows, unsigned int cols,
+ struct input_dev *input_dev)
+{
+ return -ENOSYS;
+}
+#endif
/**
* matrix_keypad_build_keymap - convert platform keymap into matrix keymap
* This function converts platform keymap (encoded with KEY() macro) into
* an array of keycodes that is suitable for using in a standard matrix
* keyboard driver that uses row and col as indices.
+ *
+ * If @keymap_data is not supplied and device tree support is enabled
+ * it will attempt load the keymap from property specified by @keymap_name
+ * argument (or "linux,keymap" if @keymap_name is %NULL).
+ *
+ * Callers are expected to set up input_dev->dev.parent before calling this
+ * function.
*/
int matrix_keypad_build_keymap(const struct matrix_keymap_data *keymap_data,
const char *keymap_name,
{
unsigned int row_shift = get_count_order(cols);
int i;
+ int error;
input_dev->keycode = keymap;
input_dev->keycodesize = sizeof(*keymap);
__set_bit(EV_KEY, input_dev->evbit);
- for (i = 0; i < keymap_data->keymap_size; i++) {
- unsigned int key = keymap_data->keymap[i];
- unsigned int row = KEY_ROW(key);
- unsigned int col = KEY_COL(key);
- unsigned short code = KEY_VAL(key);
+ if (keymap_data) {
+ for (i = 0; i < keymap_data->keymap_size; i++) {
+ unsigned int key = keymap_data->keymap[i];
- if (row >= rows || col >= cols) {
- dev_err(input_dev->dev.parent,
- "%s: invalid keymap entry %d (row: %d, col: %d, rows: %d, cols: %d)\n",
- __func__, i, row, col, rows, cols);
- return -EINVAL;
+ if (!matrix_keypad_map_key(input_dev, rows, cols,
+ row_shift, key))
+ return -EINVAL;
}
-
- keymap[MATRIX_SCAN_CODE(row, col, row_shift)] = code;
- __set_bit(code, input_dev->keybit);
+ } else {
+ error = matrix_keypad_parse_of_keymap(keymap_name, rows, cols,
+ input_dev);
+ if (error)
+ return error;
}
+
__clear_bit(KEY_RESERVED, input_dev->keybit);
return 0;
}
EXPORT_SYMBOL(matrix_keypad_build_keymap);
-
-#ifdef CONFIG_OF
-struct matrix_keymap_data *
-matrix_keyboard_of_fill_keymap(struct device_node *np,
- const char *propname)
-{
- struct matrix_keymap_data *kd;
- u32 *keymap;
- int proplen, i;
- const __be32 *prop;
-
- if (!np)
- return NULL;
-
- if (!propname)
- propname = "linux,keymap";
-
- prop = of_get_property(np, propname, &proplen);
- if (!prop)
- return NULL;
-
- if (proplen % sizeof(u32)) {
- pr_warn("Malformed keymap property %s in %s\n",
- propname, np->full_name);
- return NULL;
- }
-
- kd = kzalloc(sizeof(*kd), GFP_KERNEL);
- if (!kd)
- return NULL;
-
- kd->keymap = keymap = kzalloc(proplen, GFP_KERNEL);
- if (!kd->keymap) {
- kfree(kd);
- return NULL;
- }
-
- kd->keymap_size = proplen / sizeof(u32);
-
- for (i = 0; i < kd->keymap_size; i++) {
- u32 tmp = be32_to_cpup(prop + i);
- int key_code, row, col;
-
- row = (tmp >> 24) & 0xff;
- col = (tmp >> 16) & 0xff;
- key_code = tmp & 0xffff;
- keymap[i] = KEY(row, col, key_code);
- }
-
- return kd;
-}
-EXPORT_SYMBOL_GPL(matrix_keyboard_of_fill_keymap);
-
-void matrix_keyboard_of_free_keymap(const struct matrix_keymap_data *kd)
-{
- if (kd) {
- kfree(kd->keymap);
- kfree(kd);
- }
-}
-EXPORT_SYMBOL_GPL(matrix_keyboard_of_free_keymap);
-#endif
projects / linux-platform-drivers-x86.git / commitdiff