On Tue, Jan 20, 2009 at 12:51:46AM -0800, David Brownell wrote:
> From: David Brownell <[email protected]>
>
> Start cleaning up the twl4030 keypad driver to become more
> suitable for mainline.
>
> - Get rid of false OMAP dependencies: in names, <mach/keypad.h>
> - We don't need a miniature header file
> - Fix section annotations
> - 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'll
> be a different patch.
>
> Signed-off-by: David Brownell <[email protected]>
This looks good. I also see this driver is going to mainline, so we're
gonna have to drop this driver from l-o on 2.6.30 merge window, right ?
> ---
> 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/omap-twl4030keypad.c | 274 ++++++++++++++++----------
> drivers/input/keyboard/twl4030-keypad.h | 82 -------
> include/linux/i2c/twl4030.h | 8
> 8 files changed, 178 insertions(+), 191 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
> @@ -37,7 +37,6 @@
> #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/omap-twl4030keypad.c
> +++ b/drivers/input/keyboard/omap-twl4030keypad.c
> @@ -25,30 +25,31 @@
> * 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 {
> +struct twl4030_keypad {
> int *keymap;
> unsigned int keymapsize;
> u16 kp_state[MAX_ROWS];
> @@ -57,18 +58,84 @@ struct omap_keypad {
> int 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 +255,11 @@ 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);
> }
>
> /*
> @@ -205,7 +267,7 @@ 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 +280,7 @@ 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 */
> @@ -231,15 +293,15 @@ 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;
>
> kp = kzalloc(sizeof(*kp), GFP_KERNEL);
> @@ -252,19 +314,19 @@ static int __init omap_kp_probe(struct p
> return -EINVAL;
> }
>
> + /* ASSERT: cols <= 8, rows <= 8 */
> +
> dev_set_drvdata(&pdev->dev, 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 +334,92 @@ 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);
> + 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 don't use the sih_setup() here to package
> + * the four keypad event sources as four different IRQs.
> + */
> +
> /* 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 +428,41 @@ 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);
> err2:
> - input_free_device(kp->omap_twl4030kp);
> + input_free_device(kp->input);
>
> 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 = dev_get_drvdata(&pdev->dev);
>
> 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 <[email protected]>
> - *
> - * 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
> @@ -302,6 +302,14 @@ 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;
> --
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