From: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx> Start cleaning up the twl4030 keypad driver to become more suitable for mainline. - Remove false OMAP dependencies: names, <mach/keypad.h>, Kconfig - We don't need a miniature header file - Add missing input_sync() - Fix section annotations - Fix probe() error cleanup - Streamline i/o calls - Remove needless mutex; maintain key state only via irqs - Remove unneeded headers - Use "unsigned" for things that can't be negative The driver should also be renamed as "twl4030_keypad.c"; that will be a different patch. Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx> Reviewed-by: Trilok Soni <soni.trilok@xxxxxxxxx> --- Refresh against RC2, with feedback addressed, and also a few deltas that had accidentally been omitted. arch/arm/mach-omap2/board-2430sdp.c | 1 arch/arm/mach-omap2/board-3430sdp.c | 1 arch/arm/mach-omap2/board-ldp.c | 1 arch/arm/mach-omap2/board-omap2evm.c | 1 arch/arm/mach-omap2/board-omap3evm.c | 1 drivers/input/keyboard/Kconfig | 9 drivers/input/keyboard/omap-twl4030keypad.c | 300 +++++++++++++++----------- drivers/input/keyboard/twl4030-keypad.h | 82 ------- include/linux/i2c/twl4030.h | 16 + 9 files changed, 200 insertions(+), 212 deletions(-) --- a/arch/arm/mach-omap2/board-2430sdp.c +++ b/arch/arm/mach-omap2/board-2430sdp.c @@ -38,7 +38,6 @@ #include <mach/board.h> #include <mach/usb-musb.h> #include <mach/common.h> -#include <mach/keypad.h> #include <mach/gpmc.h> #include <mach/mcspi.h> --- a/arch/arm/mach-omap2/board-3430sdp.c +++ b/arch/arm/mach-omap2/board-3430sdp.c @@ -36,7 +36,6 @@ #include <mach/usb-musb.h> #include <mach/usb-ehci.h> #include <mach/common.h> -#include <mach/keypad.h> #include <mach/dma.h> #include <mach/gpmc.h> --- a/arch/arm/mach-omap2/board-ldp.c +++ b/arch/arm/mach-omap2/board-ldp.c @@ -34,7 +34,6 @@ #include <mach/gpio.h> #include <mach/board.h> #include <mach/common.h> -#include <mach/keypad.h> #include <mach/gpmc.h> #include <mach/usb-musb.h> --- a/arch/arm/mach-omap2/board-omap2evm.c +++ b/arch/arm/mach-omap2/board-omap2evm.c @@ -35,7 +35,6 @@ #include <mach/board.h> #include <mach/common.h> #include <mach/mmc.h> -#include <mach/keypad.h> #include <mach/gpmc.h> #include <mach/nand.h> #include <mach/mcspi.h> --- a/arch/arm/mach-omap2/board-omap3evm.c +++ b/arch/arm/mach-omap2/board-omap3evm.c @@ -30,7 +30,6 @@ #include <asm/mach/map.h> #include <mach/gpio.h> -#include <mach/keypad.h> #include <mach/board.h> #include <mach/usb-musb.h> #include <mach/usb-ehci.h> --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -260,14 +260,15 @@ config KEYBOARD_OMAP module will be called omap-keypad. config KEYBOARD_TWL4030 - tristate "TI TWL4030 keypad support" + tristate "TI TWL4030/TWL5030/TPS659x0 keypad support" depends on TWL4030_CORE help - Say Y here if you want to use the OMAP TWL4030 keypad. + Say Y here if your board use the keypad controller on + TWL4030 family chips. It's safe to say enable this + even on boards that don't use the keypad controller. To compile this driver as a module, choose M here: the - module will be called omap-twl4030keypad. This driver depends on - TWL4030 Core and TWL4030 GPIO I2C client driver + module will be called twl4030_keypad. config OMAP_PS2 tristate "TI OMAP Innovator 1510 PS/2 keyboard & mouse support" --- a/drivers/input/keyboard/omap-twl4030keypad.c +++ b/drivers/input/keyboard/omap-twl4030keypad.c @@ -25,50 +25,117 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/interrupt.h> -#include <linux/types.h> #include <linux/input.h> -#include <linux/kernel.h> -#include <linux/mutex.h> -#include <linux/delay.h> -#include <linux/bitops.h> #include <linux/platform_device.h> -#include <linux/i2c.h> #include <linux/i2c/twl4030.h> -#include <linux/irq.h> -#include <mach/keypad.h> -#include "twl4030-keypad.h" - -#define PTV_PRESCALER 4 - -#define MAX_ROWS 8 /* TWL4030 hardlimit */ - -/* Global variables */ +/* + * The TWL4030 family chips include a keypad controller that supports + * up to an 8x8 switch matrix. The controller can issue system wakeup + * events, since it uses only the always-on 32KiHz oscillator, and has + * an internal state machine that decodes pressed keys, including + * multi-key combinations. + * + * This driver lets boards define what keycodes they wish to report for + * which scancodes, as part of the "struct twl4030_keypad_data" used in + * the probe() routine. + * + * See the TPS65950 documentation; that's the general availability + * version of the TWL5030 second generation part. + */ +#define MAX_ROWS 8 /* TWL4030 hard limit */ -struct omap_keypad { - int *keymap; +struct twl4030_keypad { + unsigned *keymap; unsigned int keymapsize; u16 kp_state[MAX_ROWS]; - int n_rows; - int n_cols; - int irq; + unsigned n_rows; + unsigned n_cols; + unsigned irq; struct device *dbg_dev; - struct input_dev *omap_twl4030kp; - - /* sync read/write */ - struct mutex mutex; + struct input_dev *input; }; -static int twl4030_kpread(struct omap_keypad *kp, - u32 module, u8 *data, u32 reg, u8 num_bytes) +#define ROWCOL_MASK KEY(0xf, 0xf, 0) +#define KEYNUM_MASK ~PERSISTENT_KEY(0xf, 0xf) + +/*----------------------------------------------------------------------*/ + +/* arbitrary prescaler value 0..7 */ +#define PTV_PRESCALER 4 + +/* Register Offsets */ +#define KEYP_CTRL 0x00 +#define KEYP_DEB 0x01 +#define KEYP_LONG_KEY 0x02 +#define KEYP_LK_PTV 0x03 +#define KEYP_TIMEOUT_L 0x04 +#define KEYP_TIMEOUT_H 0x05 +#define KEYP_KBC 0x06 +#define KEYP_KBR 0x07 +#define KEYP_SMS 0x08 +#define KEYP_FULL_CODE_7_0 0x09 /* row 0 column status */ +#define KEYP_FULL_CODE_15_8 0x0a /* ... row 1 ... */ +#define KEYP_FULL_CODE_23_16 0x0b +#define KEYP_FULL_CODE_31_24 0x0c +#define KEYP_FULL_CODE_39_32 0x0d +#define KEYP_FULL_CODE_47_40 0x0e +#define KEYP_FULL_CODE_55_48 0x0f +#define KEYP_FULL_CODE_63_56 0x10 +#define KEYP_ISR1 0x11 +#define KEYP_IMR1 0x12 +#define KEYP_ISR2 0x13 +#define KEYP_IMR2 0x14 +#define KEYP_SIR 0x15 +#define KEYP_EDR 0x16 /* edge triggers */ +#define KEYP_SIH_CTRL 0x17 + +/* KEYP_CTRL_REG Fields */ +#define KEYP_CTRL_SOFT_NRST BIT(0) +#define KEYP_CTRL_SOFTMODEN BIT(1) +#define KEYP_CTRL_LK_EN BIT(2) +#define KEYP_CTRL_TOE_EN BIT(3) +#define KEYP_CTRL_TOLE_EN BIT(4) +#define KEYP_CTRL_RP_EN BIT(5) +#define KEYP_CTRL_KBD_ON BIT(6) + +/* KEYP_DEB, KEYP_LONG_KEY, KEYP_TIMEOUT_x*/ +#define KEYP_PERIOD_US(t, prescale) ((t) / (31 << (prescale + 1)) - 1) + +/* KEYP_LK_PTV_REG Fields */ +#define KEYP_LK_PTV_PTV_SHIFT 5 + +/* KEYP_{IMR,ISR,SIR} Fields */ +#define KEYP_IMR1_MIS BIT(3) +#define KEYP_IMR1_TO BIT(2) +#define KEYP_IMR1_LK BIT(1) +#define KEYP_IMR1_KP BIT(0) + +/* KEYP_EDR Fields */ +#define KEYP_EDR_KP_FALLING 0x01 +#define KEYP_EDR_KP_RISING 0x02 +#define KEYP_EDR_KP_BOTH 0x03 +#define KEYP_EDR_LK_FALLING 0x04 +#define KEYP_EDR_LK_RISING 0x08 +#define KEYP_EDR_TO_FALLING 0x10 +#define KEYP_EDR_TO_RISING 0x20 +#define KEYP_EDR_MIS_FALLING 0x40 +#define KEYP_EDR_MIS_RISING 0x80 + + +/*----------------------------------------------------------------------*/ + +static int twl4030_kpread(struct twl4030_keypad *kp, + u8 *data, u32 reg, u8 num_bytes) { int ret; - ret = twl4030_i2c_read(module, data, reg, num_bytes); + ret = twl4030_i2c_read(TWL4030_MODULE_KEYPAD, data, reg, num_bytes); if (ret < 0) { dev_warn(kp->dbg_dev, "Couldn't read TWL4030: %X - ret %d[%x]\n", @@ -78,12 +145,11 @@ static int twl4030_kpread(struct omap_ke return ret; } -static int twl4030_kpwrite_u8(struct omap_keypad *kp, - u32 module, u8 data, u32 reg) +static int twl4030_kpwrite_u8(struct twl4030_keypad *kp, u8 data, u32 reg) { int ret; - ret = twl4030_i2c_write_u8(module, data, reg); + ret = twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, data, reg); if (ret < 0) { dev_warn(kp->dbg_dev, "Could not write TWL4030: %X - ret %d[%x]\n", @@ -93,7 +159,7 @@ static int twl4030_kpwrite_u8(struct oma return ret; } -static int omap_kp_find_key(struct omap_keypad *kp, int col, int row) +static int twl4030_find_key(struct twl4030_keypad *kp, int col, int row) { int i, rc; @@ -105,7 +171,7 @@ static int omap_kp_find_key(struct omap_ return -EINVAL; } -static inline u16 omap_kp_col_xlate(struct omap_keypad *kp, u8 col) +static inline u16 twl4030_col_xlate(struct twl4030_keypad *kp, u8 col) { /* If all bits in a row are active for all coloumns then * we have that row line connected to gnd. Mark this @@ -118,20 +184,20 @@ static inline u16 omap_kp_col_xlate(stru return col & ((1 << kp->n_cols) - 1); } -static int omap_kp_read_kp_matrix_state(struct omap_keypad *kp, u16 *state) +static int twl4030_read_kp_matrix_state(struct twl4030_keypad *kp, u16 *state) { u8 new_state[MAX_ROWS]; int row; - int ret = twl4030_kpread(kp, TWL4030_MODULE_KEYPAD, + int ret = twl4030_kpread(kp, new_state, KEYP_FULL_CODE_7_0, kp->n_rows); if (ret >= 0) { for (row = 0; row < kp->n_rows; row++) - state[row] = omap_kp_col_xlate(kp, new_state[row]); + state[row] = twl4030_col_xlate(kp, new_state[row]); } return ret; } -static int omap_kp_is_in_ghost_state(struct omap_keypad *kp, u16 *key_state) +static int twl4030_is_in_ghost_state(struct twl4030_keypad *kp, u16 *key_state) { int i; u16 check = 0; @@ -147,7 +213,7 @@ static int omap_kp_is_in_ghost_state(str return 0; } -static void twl4030_kp_scan(struct omap_keypad *kp, int release_all) +static void twl4030_kp_scan(struct twl4030_keypad *kp, int release_all) { u16 new_state[MAX_ROWS]; int col, row; @@ -156,16 +222,14 @@ static void twl4030_kp_scan(struct omap_ memset(new_state, 0, sizeof(new_state)); else { /* check for any changes */ - int ret = omap_kp_read_kp_matrix_state(kp, new_state); + int ret = twl4030_read_kp_matrix_state(kp, new_state); + if (ret < 0) /* panic ... */ return; - - if (omap_kp_is_in_ghost_state(kp, new_state)) + if (twl4030_is_in_ghost_state(kp, new_state)) return; } - mutex_lock(&kp->mutex); - /* check for changes and print those */ for (row = 0; row < kp->n_rows; row++) { int changed = new_state[row] ^ kp->kp_state[row]; @@ -183,7 +247,7 @@ static void twl4030_kp_scan(struct omap_ (new_state[row] & (1 << col)) ? "press" : "release"); - key = omap_kp_find_key(kp, col, row); + key = twl4030_find_key(kp, col, row); if (key < 0) dev_warn(kp->dbg_dev, "Spurious key event %d-%d\n", @@ -191,13 +255,12 @@ static void twl4030_kp_scan(struct omap_ else if (key & KEY_PERSISTENT) continue; else - input_report_key(kp->omap_twl4030kp, key, + input_report_key(kp->input, key, new_state[row] & (1 << col)); } kp->kp_state[row] = new_state[row]; } - - mutex_unlock(&kp->mutex); + input_sync(kp->input); } /* @@ -205,7 +268,7 @@ static void twl4030_kp_scan(struct omap_ */ static irqreturn_t do_kp_irq(int irq, void *_kp) { - struct omap_keypad *kp = _kp; + struct twl4030_keypad *kp = _kp; u8 reg; int ret; @@ -218,7 +281,7 @@ static irqreturn_t do_kp_irq(int irq, vo #endif /* Read & Clear TWL4030 pending interrupt */ - ret = twl4030_kpread(kp, TWL4030_MODULE_KEYPAD, ®, KEYP_ISR1, 1); + ret = twl4030_kpread(kp, ®, KEYP_ISR1, 1); /* Release all keys if I2C has gone bad or * the KEYP has gone to idle state */ @@ -231,40 +294,38 @@ static irqreturn_t do_kp_irq(int irq, vo } /* - * Registers keypad device with input sub system + * Registers keypad device with input subsystem * and configures TWL4030 keypad registers */ -static int __init omap_kp_probe(struct platform_device *pdev) +static int __devinit twl4030_kp_probe(struct platform_device *pdev) { u8 reg; int i; int ret = 0; - struct omap_keypad *kp; + struct twl4030_keypad *kp; struct twl4030_keypad_data *pdata = pdev->dev.platform_data; + if (!pdata || !pdata->rows || !pdata->cols || !pdata->keymap + || pdata->rows > 8 || pdata->cols > 8) { + dev_err(&pdev->dev, "Invalid platform_data\n"); + return -EINVAL; + } + kp = kzalloc(sizeof(*kp), GFP_KERNEL); if (!kp) return -ENOMEM; - if (!pdata->rows || !pdata->cols || !pdata->keymap) { - dev_err(&pdev->dev, "No rows, cols or keymap from pdata\n"); - kfree(kp); - return -EINVAL; - } - - dev_set_drvdata(&pdev->dev, kp); + platform_set_drvdata(pdev, kp); /* Get the debug Device */ kp->dbg_dev = &pdev->dev; - kp->omap_twl4030kp = input_allocate_device(); - if (!kp->omap_twl4030kp) { + kp->input = input_allocate_device(); + if (!kp->input) { kfree(kp); return -ENOMEM; } - mutex_init(&kp->mutex); - kp->keymap = pdata->keymap; kp->keymapsize = pdata->keymapsize; kp->n_rows = pdata->rows; @@ -272,82 +333,92 @@ static int __init omap_kp_probe(struct p kp->irq = platform_get_irq(pdev, 0); /* setup input device */ - set_bit(EV_KEY, kp->omap_twl4030kp->evbit); + __set_bit(EV_KEY, kp->input->evbit); /* Enable auto repeat feature of Linux input subsystem */ if (pdata->rep) - set_bit(EV_REP, kp->omap_twl4030kp->evbit); + __set_bit(EV_REP, kp->input->evbit); for (i = 0; i < kp->keymapsize; i++) - set_bit(kp->keymap[i] & KEYNUM_MASK, - kp->omap_twl4030kp->keybit); + __set_bit(kp->keymap[i] & KEYNUM_MASK, + kp->input->keybit); - kp->omap_twl4030kp->name = "omap_twl4030keypad"; - kp->omap_twl4030kp->phys = "omap_twl4030keypad/input0"; - kp->omap_twl4030kp->dev.parent = &pdev->dev; + kp->input->name = "TWL4030 Keypad"; + kp->input->phys = "twl4030_keypad/input0"; + kp->input->dev.parent = &pdev->dev; - kp->omap_twl4030kp->id.bustype = BUS_HOST; - kp->omap_twl4030kp->id.vendor = 0x0001; - kp->omap_twl4030kp->id.product = 0x0001; - kp->omap_twl4030kp->id.version = 0x0003; + kp->input->id.bustype = BUS_HOST; + kp->input->id.vendor = 0x0001; + kp->input->id.product = 0x0001; + kp->input->id.version = 0x0003; - kp->omap_twl4030kp->keycode = kp->keymap; - kp->omap_twl4030kp->keycodesize = sizeof(unsigned int); - kp->omap_twl4030kp->keycodemax = kp->keymapsize; + kp->input->keycode = kp->keymap; + kp->input->keycodesize = sizeof(unsigned int); + kp->input->keycodemax = kp->keymapsize; - ret = input_register_device(kp->omap_twl4030kp); + ret = input_register_device(kp->input); if (ret < 0) { dev_err(kp->dbg_dev, "Unable to register twl4030 keypad device\n"); goto err2; } - /* Disable auto-repeat */ - reg = KEYP_CTRL_NOAUTORPT; - ret = twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, reg, KEYP_CTRL); + /* Enable controller, with hardware decoding but not autorepeat */ + reg = KEYP_CTRL_SOFT_NRST | KEYP_CTRL_SOFTMODEN + | KEYP_CTRL_TOE_EN | KEYP_CTRL_KBD_ON; + ret = twl4030_kpwrite_u8(kp, reg, KEYP_CTRL); if (ret < 0) goto err3; + /* NOTE: we could use sih_setup() here to package keypad + * event sources as four different IRQs ... but we don't. + */ + /* Enable TO rising and KP rising and falling edge detection */ reg = KEYP_EDR_KP_BOTH | KEYP_EDR_TO_RISING; - ret = twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, reg, KEYP_EDR); + ret = twl4030_kpwrite_u8(kp, reg, KEYP_EDR); if (ret < 0) goto err3; /* Set PTV prescaler Field */ reg = (PTV_PRESCALER << KEYP_LK_PTV_PTV_SHIFT); - ret = twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, reg, KEYP_LK_PTV); + ret = twl4030_kpwrite_u8(kp, reg, KEYP_LK_PTV); if (ret < 0) goto err3; /* Set key debounce time to 20 ms */ i = KEYP_PERIOD_US(20000, PTV_PRESCALER); - ret = twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, i, KEYP_DEB); + ret = twl4030_kpwrite_u8(kp, i, KEYP_DEB); if (ret < 0) goto err3; /* Set timeout period to 100 ms */ i = KEYP_PERIOD_US(200000, PTV_PRESCALER); - ret = twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, - (i & 0xFF), KEYP_TIMEOUT_L); + ret = twl4030_kpwrite_u8(kp, (i & 0xFF), KEYP_TIMEOUT_L); + if (ret < 0) + goto err3; + ret = twl4030_kpwrite_u8(kp, (i >> 8), KEYP_TIMEOUT_H); if (ret < 0) goto err3; - ret = twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, - (i >> 8), KEYP_TIMEOUT_H); + /* Enable Clear-on-Read; disable remembering events that fire + * after the IRQ but before our handler acks (reads) them, + */ + reg = TWL4030_SIH_CTRL_COR_MASK | TWL4030_SIH_CTRL_PENDDIS_MASK; + ret = twl4030_kpwrite_u8(kp, reg, KEYP_SIH_CTRL); if (ret < 0) goto err3; - /* Enable Clear-on-Read */ - reg = KEYP_SIH_CTRL_COR | KEYP_SIH_CTRL_PEND_DIS; - ret = twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, - reg, KEYP_SIH_CTRL); + /* initialize key state; irqs update it from here on */ + ret = twl4030_read_kp_matrix_state(kp, kp->kp_state); if (ret < 0) goto err3; /* * This ISR will always execute in kernel thread context because of * the need to access the TWL4030 over the I2C bus. + * + * NOTE: we assume this host is wired to TWL4040 INT1, not INT2 ... */ ret = request_irq(kp->irq, do_kp_irq, 0, pdev->name, kp); if (ret < 0) { @@ -356,46 +427,42 @@ static int __init omap_kp_probe(struct p goto err3; } else { /* Enable KP and TO interrupts now. */ - reg = ~(KEYP_IMR1_KP | KEYP_IMR1_TO); - ret = twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, - reg, KEYP_IMR1); + reg = (u8) ~(KEYP_IMR1_KP | KEYP_IMR1_TO); + ret = twl4030_kpwrite_u8(kp, reg, KEYP_IMR1); if (ret < 0) goto err5; } - ret = omap_kp_read_kp_matrix_state(kp, kp->kp_state); - if (ret < 0) - goto err4; - return ret; err5: /* mask all events - we don't care about the result */ - (void) twl4030_kpwrite_u8(kp, TWL4030_MODULE_KEYPAD, 0xff, KEYP_IMR1); -err4: + (void) twl4030_kpwrite_u8(kp, 0xff, KEYP_IMR1); free_irq(kp->irq, NULL); err3: - input_unregister_device(kp->omap_twl4030kp); + input_unregister_device(kp->input); + kp->input = NULL; err2: - input_free_device(kp->omap_twl4030kp); - + input_free_device(kp->input); + kfree(kp); return -ENODEV; } -static int omap_kp_remove(struct platform_device *pdev) +static int __devexit twl4030_kp_remove(struct platform_device *pdev) { - struct omap_keypad *kp = dev_get_drvdata(&pdev->dev); + struct twl4030_keypad *kp = platform_get_drvdata(pdev); free_irq(kp->irq, kp); - input_unregister_device(kp->omap_twl4030kp); + input_unregister_device(kp->input); kfree(kp); return 0; } +MODULE_ALIAS("platform:twl4030_keypad"); -static struct platform_driver omap_kp_driver = { - .probe = omap_kp_probe, - .remove = __devexit_p(omap_kp_remove), +static struct platform_driver twl4030_kp_driver = { + .probe = twl4030_kp_probe, + .remove = __devexit_p(twl4030_kp_remove), .driver = { .name = "twl4030_keypad", .owner = THIS_MODULE, @@ -405,19 +472,18 @@ static struct platform_driver omap_kp_dr /* * OMAP TWL4030 Keypad init */ -static int __devinit omap_kp_init(void) +static int __init twl4030_kp_init(void) { - return platform_driver_register(&omap_kp_driver); + return platform_driver_register(&twl4030_kp_driver); } +module_init(twl4030_kp_init); -static void __exit omap_kp_exit(void) +static void __exit twl4030_kp_exit(void) { - platform_driver_unregister(&omap_kp_driver); + platform_driver_unregister(&twl4030_kp_driver); } +module_exit(twl4030_kp_exit); -module_init(omap_kp_init); -module_exit(omap_kp_exit); -MODULE_ALIAS("platform:twl4030_keypad"); MODULE_AUTHOR("Texas Instruments"); -MODULE_DESCRIPTION("OMAP TWL4030 Keypad Driver"); +MODULE_DESCRIPTION("TWL4030 Keypad Driver"); MODULE_LICENSE("GPL"); --- a/drivers/input/keyboard/twl4030-keypad.h +++ /dev/null @@ -1,82 +0,0 @@ -/* - * drivers/input/keyboard/twl4030-keypad.h - * - * Copyright (C) 2006-2007 Texas Instruments, Inc. - * - * Intial Code: - * Syed Mohammed Khasim <x0khasim@xxxxxx> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#ifndef __TWL4030_KEYPAD_H__ -#define __TWL4030_KEYPAD_H__ - -/* Register Definitions */ -#define KEYP_CTRL 0x00 -#define KEYP_DEB 0x01 -#define KEYP_LONG_KEY 0x02 -#define KEYP_LK_PTV 0x03 -#define KEYP_TIMEOUT_L 0x04 -#define KEYP_TIMEOUT_H 0x05 -#define KEYP_FULL_CODE_7_0 0x09 -#define KEYP_ISR1 0x11 -#define KEYP_IMR1 0x12 -#define KEYP_EDR 0x16 -#define KEYP_SIH_CTRL 0x17 - -/* KEYP_CTRL_REG Fields */ -#define KEYP_CTRL_SOFT_NRST 0x01 -#define KEYP_CTRL_SOFTMODEN 0x02 -#define KEYP_CTRL_LK_EN 0x04 -#define KEYP_CTRL_TOE_EN 0x08 -#define KEYP_CTRL_TOLE_EN 0x10 -#define KEYP_CTRL_RP_EN 0x20 -#define KEYP_CTRL_KBD_ON 0x40 - - -#define KEYP_CTRL_NOAUTORPT (KEYP_CTRL_SOFT_NRST | \ - KEYP_CTRL_SOFTMODEN | \ - KEYP_CTRL_TOE_EN | \ - KEYP_CTRL_KBD_ON) - -/* KEYP_DEB, KEYP_LONG_KEY, KEYP_TIMEOUT_x*/ -#define KEYP_PERIOD_US(T, prescale) (T / (31 << (prescale + 1)) - 1) - -/* KEYP_LK_PTV_REG Fields */ -#define KEYP_LK_PTV_PTV_SHIFT 5 - -/* KEYP_IMR1 Fields */ -#define KEYP_IMR1_MIS 0x08 -#define KEYP_IMR1_TO 0x04 -#define KEYP_IMR1_LK 0x02 -#define KEYP_IMR1_KP 0x01 - -/* KEYP_EDR Fields */ -#define KEYP_EDR_KP_FALLING 0x01 -#define KEYP_EDR_KP_RISING 0x02 -#define KEYP_EDR_KP_BOTH 0x03 -#define KEYP_EDR_LK_FALLING 0x04 -#define KEYP_EDR_LK_RISING 0x08 -#define KEYP_EDR_TO_FALLING 0x10 -#define KEYP_EDR_TO_RISING 0x20 -#define KEYP_EDR_MIS_FALLING 0x40 -#define KEYP_EDR_MIS_RISING 0x80 - -/* KEYP_SIH_CTRL Fields */ -#define KEYP_SIH_CTRL_COR 0x04 -#define KEYP_SIH_CTRL_PEND_DIS 0x02 -#define KEYP_SIH_CTRL_EXCL_EN 0x01 - -#endif /* End of __TWL4030-KEYPAD_H__ */ --- a/include/linux/i2c/twl4030.h +++ b/include/linux/i2c/twl4030.h @@ -302,11 +302,19 @@ struct twl4030_madc_platform_data { int irq_line; }; +/* Boards have uniqe mappings of {col, row} --> keycode. + * Column and row are 4 bits, but range only from 0..7; + * a PERSISTENT_KEY is "always on" and never reported. + */ +#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 { - int rows; - int cols; - int *keymap; - unsigned int keymapsize; + unsigned rows; + unsigned cols; + unsigned *keymap; + unsigned short keymapsize; unsigned int rep:1; }; -- 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