On Mon, Apr 20, 2009 at 11:22:41PM -0700, David Brownell wrote: > On Friday 06 February 2009, David Brownell wrote: > > From: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx> > > > > Add a driver for the keypad controller on TWL4030 family chips. > > PING? I was told this was in the input queue, but it's not in > > http://git.kernel.org/?p=linux/kernel/git/dtor/input.git > > Here's a current version of the patch. > Dave, It waqs sitting in my local queue, I had some concerns over the keymap change as it was implemented in the version you sent me. The problem is that you mangle key codes in your keymap table (encoding row/col data in them) but input core is not aware of that and when you try using EVIOCSETKEYCODE it will do wierd things. I was wondering what you would think about the following patch that should rectify this issue. Also, I don't think we need the special handling for "persistant" keys. Just let these keys generate KEY_RESERVED and input core will not propagate their events. Thanks! -- Dmitry Input: twl4030_kepad fixups Signed-off-by: Dmitry Torokhov <dtor@xxxxxxx> --- drivers/input/keyboard/twl4030_keypad.c | 62 ++++++++++--------------------- include/linux/i2c/twl4030.h | 18 +++++++-- 2 files changed, 32 insertions(+), 48 deletions(-) diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c index 987f13c..b761cac 100644 --- a/drivers/input/keyboard/twl4030_keypad.c +++ b/drivers/input/keyboard/twl4030_keypad.c @@ -48,23 +48,18 @@ * See the TPS65950 documentation; that's the general availability * version of the TWL5030 second generation part. */ -#define MAX_ROWS 8 /* TWL4030 hard limit */ struct twl4030_keypad { - unsigned *keymap; - unsigned int keymapsize; - u16 kp_state[MAX_ROWS]; - unsigned n_rows; - unsigned n_cols; + unsigned short keymap[TWL4030_KEYMAP_SIZE]; + u16 kp_state[TWL4030_MAX_ROWS]; + u8 n_rows; + u8 n_cols; unsigned irq; struct device *dbg_dev; struct input_dev *input; }; -#define ROWCOL_MASK KEY(0xf, 0xf, 0) -#define KEYNUM_MASK ~PERSISTENT_KEY(0xf, 0xf) - /*----------------------------------------------------------------------*/ /* arbitrary prescaler value 0..7 */ @@ -156,18 +151,6 @@ static int twl4030_kpwrite_u8(struct twl4030_keypad *kp, u8 data, u32 reg) return ret; } -static int twl4030_find_key(struct twl4030_keypad *kp, int col, int row) -{ - int i, rc; - - rc = KEY(col, row, 0); - for (i = 0; i < kp->keymapsize; i++) - if ((kp->keymap[i] & ROWCOL_MASK) == rc) - return kp->keymap[i] & (KEYNUM_MASK | KEY_PERSISTENT); - - return -EINVAL; -} - static inline u16 twl4030_col_xlate(struct twl4030_keypad *kp, u8 col) { /* If all bits in a row are active for all coloumns then @@ -183,7 +166,7 @@ static inline u16 twl4030_col_xlate(struct twl4030_keypad *kp, u8 col) static int twl4030_read_kp_matrix_state(struct twl4030_keypad *kp, u16 *state) { - u8 new_state[MAX_ROWS]; + u8 new_state[TWL4030_MAX_ROWS]; int row; int ret = twl4030_kpread(kp, new_state, KEYP_FULL_CODE_7_0, kp->n_rows); @@ -213,7 +196,8 @@ static int twl4030_is_in_ghost_state(struct twl4030_keypad *kp, u16 *key_state) static void twl4030_kp_scan(struct twl4030_keypad *kp, int release_all) { - u16 new_state[MAX_ROWS]; + struct input_dev *input = kp->input; + u16 new_state[TWL4030_MAX_ROWS]; int col, row; if (release_all) @@ -246,20 +230,13 @@ static void twl4030_kp_scan(struct twl4030_keypad *kp, int release_all) (new_state[row] & (1 << col)) ? "press" : "release"); - key = twl4030_find_key(kp, col, row); - if (key < 0) - dev_warn(kp->dbg_dev, - "Spurious key event %d-%d\n", - col, row); - else if (key & KEY_PERSISTENT) - continue; - else - input_report_key(kp->input, key, - new_state[row] & (1 << col)); + key = kp->keymap[(row << 3) | col]; + input_report_key(input, key, + new_state[row] & (1 << col)); } kp->kp_state[row] = new_state[row]; } - input_sync(kp->input); + input_sync(input); } /* @@ -358,8 +335,8 @@ static int __devinit twl4030_kp_probe(struct platform_device *pdev) int i; int error; - if (!pdata || !pdata->rows || !pdata->cols || !pdata->keymap - || pdata->rows > 8 || pdata->cols > 8) { + if (!pdata || !pdata->rows || !pdata->cols || + pdata->rows > TWL4030_MAX_ROWS || pdata->cols > TWL4030_MAX_COLS) { dev_err(&pdev->dev, "Invalid platform_data\n"); return -EINVAL; } @@ -373,11 +350,9 @@ static int __devinit twl4030_kp_probe(struct platform_device *pdev) /* Get the debug Device */ kp->dbg_dev = &pdev->dev; - kp->input = input; - kp->keymap = pdata->keymap; - kp->keymapsize = pdata->keymapsize; + memcpy(kp->keymap, pdata->keymap, sizeof(pdata->keymap)); kp->n_rows = pdata->rows; kp->n_cols = pdata->cols; kp->irq = platform_get_irq(pdev, 0); @@ -389,8 +364,9 @@ static int __devinit twl4030_kp_probe(struct platform_device *pdev) if (pdata->rep) __set_bit(EV_REP, kp->input->evbit); - for (i = 0; i < kp->keymapsize; i++) - __set_bit(kp->keymap[i] & KEYNUM_MASK, input->keybit); + for (i = 0; i < ARRAY_SIZE(kp->keymap); i++) + __set_bit(kp->keymap[i], input->keybit); + __clear_bit(KEY_RESERVED, input->keybit); input->name = "TWL4030 Keypad"; input->phys = "twl4030_keypad/input0"; @@ -402,8 +378,8 @@ static int __devinit twl4030_kp_probe(struct platform_device *pdev) input->id.version = 0x0003; input->keycode = kp->keymap; - input->keycodesize = sizeof(unsigned int); - input->keycodemax = kp->keymapsize; + input->keycodesize = sizeof(kp->keymap[0]); + input->keycodemax = ARRAY_SIZE(kp->keymap); error = input_register_device(input); if (error) { diff --git a/include/linux/i2c/twl4030.h b/include/linux/i2c/twl4030.h index 6b9722d..e493d2a 100644 --- a/include/linux/i2c/twl4030.h +++ b/include/linux/i2c/twl4030.h @@ -25,6 +25,8 @@ #ifndef __TWL4030_H_ #define __TWL4030_H_ +#include <linux/types.h> + /* * Using the twl4030 core we address registers using a pair * { module id, relative register offset } @@ -306,16 +308,22 @@ struct twl4030_madc_platform_data { * Column and row are 4 bits, but range only from 0..7; * a PERSISTENT_KEY is "always on" and never reported. */ + +#define TWL4030_MAX_ROWS 8 +#define TWL4030_MAX_COLS 8 +#define TWL4030_KEYMAP_SIZE (TWL4030_MAX_ROWS * TWL4030_MAX_COLS) + +/* #define KEY_PERSISTENT 0x00800000 #define KEY(col, row, keycode) (((col) << 28) | ((row) << 24) | (keycode)) #define PERSISTENT_KEY(c, r) KEY((c), (r), KEY_PERSISTENT) +*/ struct twl4030_keypad_data { - unsigned rows; - unsigned cols; - unsigned *keymap; - unsigned short keymapsize; - unsigned int rep:1; + unsigned short keymap[TWL4030_KEYMAP_SIZE]; + u8 rows; + u8 cols; + bool rep; }; enum twl4030_usb_mode { -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
