diff options
| -rw-r--r-- | drivers/input/keyboard/tegra-kbc.c | 56 | ||||
| -rw-r--r-- | drivers/input/matrix-keymap.c | 175 | ||||
| -rw-r--r-- | include/linux/input/matrix_keypad.h | 18 |
3 files changed, 130 insertions, 119 deletions
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c index 6722d376e898..4ffe64d53107 100644 --- a/drivers/input/keyboard/tegra-kbc.c +++ b/drivers/input/keyboard/tegra-kbc.c @@ -619,8 +619,8 @@ tegra_kbc_check_pin_cfg(const struct tegra_kbc_platform_data *pdata, } #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; @@ -660,10 +660,6 @@ tegra_kbc_dt_parse_pdata(struct platform_device *pdev) 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 @@ -674,10 +670,36 @@ static inline struct tegra_kbc_platform_data *tegra_kbc_dt_parse_pdata( } #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; @@ -686,7 +708,6 @@ static int __devinit tegra_kbc_probe(struct platform_device *pdev) 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); @@ -768,17 +789,9 @@ static int __devinit tegra_kbc_probe(struct platform_device *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; } @@ -805,9 +818,6 @@ static int __devinit tegra_kbc_probe(struct platform_device *pdev) 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: @@ -822,10 +832,8 @@ err_free_mem: 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; } diff --git a/drivers/input/matrix-keymap.c b/drivers/input/matrix-keymap.c index de7992d55da2..db92c1ebfc59 100644 --- a/drivers/input/matrix-keymap.c +++ b/drivers/input/matrix-keymap.c @@ -17,15 +17,91 @@ * */ +#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 @@ -41,6 +117,13 @@ * 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, @@ -50,6 +133,7 @@ int matrix_keypad_build_keymap(const struct matrix_keymap_data *keymap_data, { unsigned int row_shift = get_count_order(cols); int i; + int error; input_dev->keycode = keymap; input_dev->keycodesize = sizeof(*keymap); @@ -57,86 +141,23 @@ int matrix_keypad_build_keymap(const struct matrix_keymap_data *keymap_data, __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 diff --git a/include/linux/input/matrix_keypad.h b/include/linux/input/matrix_keypad.h index e8fe08ebc245..5f3aa6b11bfa 100644 --- a/include/linux/input/matrix_keypad.h +++ b/include/linux/input/matrix_keypad.h @@ -81,22 +81,4 @@ int matrix_keypad_build_keymap(const struct matrix_keymap_data *keymap_data, unsigned short *keymap, struct input_dev *input_dev); -#ifdef CONFIG_OF -struct matrix_keymap_data * -matrix_keyboard_of_fill_keymap(struct device_node *np, const char *propname); - -void matrix_keyboard_of_free_keymap(const struct matrix_keymap_data *kd); -#else -static inline struct matrix_keymap_data * -matrix_keyboard_of_fill_keymap(struct device_node *np, const char *propname) -{ - return NULL; -} - -static inline void -matrix_keyboard_of_free_keymap(const struct matrix_keymap_data *kd) -{ -} -#endif - #endif /* _MATRIX_KEYPAD_H */ |