Hi Guido,
On Wed, May 07, 2014 at 10:00:42AM -0300, Guido Martínez wrote:
> Add DT support for the Analog ADP5589 matrix keypad decoding functions.
>
> Signed-off-by: Guido Martínez <guido@xxxxxxxxxxxxxxxxxxxx>
> ---
> drivers/input/keyboard/adp5589-keys.c | 207 +++++++++++++++++++++++++++++++++-
> 1 file changed, 206 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/input/keyboard/adp5589-keys.c b/drivers/input/keyboard/adp5589-keys.c
> index 6329549..2b232c0 100644
> --- a/drivers/input/keyboard/adp5589-keys.c
> +++ b/drivers/input/keyboard/adp5589-keys.c
> @@ -18,7 +18,10 @@
> #include <linux/i2c.h>
> #include <linux/gpio.h>
> #include <linux/slab.h>
> +#include <linux/of.h>
> +#include <linux/err.h>
>
> +#include <linux/input/matrix_keypad.h>
> #include <linux/input/adp5589.h>
>
> /* ADP5589/ADP5585 Common Registers */
> @@ -246,6 +249,14 @@ struct adp5589_kpad {
> #endif
> };
>
> +static struct of_device_id adp5589_of_match[] = {
> + {
> + .compatible = "adi,adp5589",
> + .data = (void *)ADP5589
> + },
> + { },
> +};
> +
> /*
> * ADP5589 / ADP5585 derivative / variant handling
> */
> @@ -858,6 +869,188 @@ static void adp5589_report_switch_state(struct adp5589_kpad *kpad)
> input_sync(kpad->input);
> }
>
> +#ifdef CONFIG_OF
> +static int adp5589_key(int row, int col)
> +{
> + return col + row * 11;
> +}
> +
> +static int adp5589_dt_read_keymap(struct device *dev,
> + struct adp5589_kpad_platform_data *pdata,
> + const struct device_node *node)
> +{
> + int i;
> + const u32 *dt_keymap;
> + unsigned short *keymap;
> + int keymap_len;
> +
> + dt_keymap = of_get_property(node, "linux,keymap", &keymap_len);
> + if (!dt_keymap) {
> + dev_err(dev, "missing dt keymap\n");
> + return -ENODEV;
> + }
> +
> + if (keymap_len % sizeof(u32)) {
> + dev_err(dev, "malformed keymap (len=%i)\n", keymap_len);
> + return -EINVAL;
> + }
> +
> + keymap_len /= sizeof(u32);
> +
> + keymap = devm_kzalloc(dev, ADP5589_KEYMAPSIZE * sizeof(u32),
> + GFP_KERNEL);
> + if (!keymap)
> + return -ENOMEM;
> +
> + for (i = 0; i < keymap_len; i++) {
> + u32 val;
> + u16 key;
> + u8 row, col;
> +
> + val = be32_to_cpup(&dt_keymap[i]);
> +
> + row = KEY_ROW(val);
> + col = KEY_COL(val);
> + key = KEY_VAL(val);
> +
> + if (row > ADP5589_MAX_ROW_NUM) {
> + dev_err(dev, "invalid row number (%i)\n", row);
> + return -EINVAL;
> + }
> +
> + if (col > ADP5589_MAX_COL_NUM) {
> + dev_err(dev, "invalid column number (%i)\n", col);
> + return -EINVAL;
> + }
> +
> + pdata->keypad_en_mask |= ADP_ROW(row);
> + pdata->keypad_en_mask |= ADP_COL(col);
> +
> + keymap[adp5589_key(row, col)] = key;
> + }
> +
> + pdata->keymap = keymap;
> + pdata->keymapsize = ADP5589_KEYMAPSIZE;
I was wondering if we could also move non-DT variant to matrix-keypad
infrastructure and use matrix_keypad_build_keymap and friends to handle
this uniformly.
Thanks.
--
Dmitry
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