[PATCH 07/17] Input: omap-keypad: Remove dependencies to mach includes
Poddar, Sourav
sourav.poddar at ti.com
Wed Sep 12 02:39:29 EDT 2012
Hi,
On Tue, Sep 11, 2012 at 11:26 PM, Tony Lindgren <tony at atomide.com> wrote:
> * Tony Lindgren <tony at atomide.com> [120910 23:17]:
>> * Felipe Balbi <balbi at ti.com> [120910 23:02]:
>>
>> > > static int __devinit omap_kp_probe(struct platform_device *pdev)
>> > > {
>> > > - struct omap_kp *omap_kp;
>> >
>> > ???? I don't see the point for that global omap_kp, actually ...
>>
>> Yes you're right. Will send an updated one tomorrow.
>
> Here's the updated patch that just removes all omap2+ code,
> and does not use the global omap_kp.
>
> Regards,
>
> Tony
>
>
> From: Tony Lindgren <tony at atomide.com>
> Date: Fri, 7 Sep 2012 13:27:58 -0700
> Subject: [PATCH] Input: omap-keypad: Remove dependencies to mach includes
>
> Remove support for omap2+ as it's no longer needed since
> it's using matrix-keypad. This way we can remove depency
> to plat and mach headers which is needed for ARM common
> zImage support.
>
> Also remove INT_KEYBOARD by using omap_kp->irq.
>
> Note that this patch depends on an earlier patch
> "ARM: OMAP: Move gpio.h to include/linux/platform_data".
>
> Cc: Dmitry Torokhov <dmitry.torokhov at gmail.com>
> Cc: linux-input at vger.kernel.org
> Signed-off-by: Tony Lindgren <tony at atomide.com>
>
> --- a/drivers/input/keyboard/Kconfig
> +++ b/drivers/input/keyboard/Kconfig
> @@ -533,7 +533,7 @@ config KEYBOARD_DAVINCI
>
> config KEYBOARD_OMAP
> tristate "TI OMAP keypad support"
> - depends on (ARCH_OMAP1 || ARCH_OMAP2)
> + depends on ARCH_OMAP1
> select INPUT_MATRIXKMAP
> help
> Say Y here if you want to use the OMAP keypad.
> diff --git a/drivers/input/keyboard/omap-keypad.c b/drivers/input/keyboard/omap-keypad.c
> index a0222db..2bda5f0b 100644
> --- a/drivers/input/keyboard/omap-keypad.c
> +++ b/drivers/input/keyboard/omap-keypad.c
> @@ -35,13 +35,9 @@
> #include <linux/mutex.h>
> #include <linux/errno.h>
> #include <linux/slab.h>
> -#include <asm/gpio.h>
> +#include <linux/gpio.h>
> +#include <linux/platform_data/gpio-omap.h>
> #include <plat/keypad.h>
> -#include <plat/menelaus.h>
> -#include <asm/irq.h>
> -#include <mach/hardware.h>
> -#include <asm/io.h>
> -#include <plat/mux.h>
>
> #undef NEW_BOARD_LEARNING_MODE
>
> @@ -96,28 +92,8 @@ static u8 get_row_gpio_val(struct omap_kp *omap_kp)
>
> static irqreturn_t omap_kp_interrupt(int irq, void *dev_id)
> {
> - struct omap_kp *omap_kp = dev_id;
> -
> /* disable keyboard interrupt and schedule for handling */
> - if (cpu_is_omap24xx()) {
> - int i;
> -
> - for (i = 0; i < omap_kp->rows; i++) {
> - int gpio_irq = gpio_to_irq(row_gpios[i]);
> - /*
> - * The interrupt which we're currently handling should
> - * be disabled _nosync() to avoid deadlocks waiting
> - * for this handler to complete. All others should
> - * be disabled the regular way for SMP safety.
> - */
> - if (gpio_irq == irq)
> - disable_irq_nosync(gpio_irq);
> - else
> - disable_irq(gpio_irq);
> - }
> - } else
> - /* disable keyboard interrupt and schedule for handling */
> - omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> + omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
>
> tasklet_schedule(&kp_tasklet);
>
> @@ -133,33 +109,22 @@ static void omap_kp_scan_keypad(struct omap_kp *omap_kp, unsigned char *state)
> {
> int col = 0;
>
> - /* read the keypad status */
> - if (cpu_is_omap24xx()) {
> - /* read the keypad status */
> - for (col = 0; col < omap_kp->cols; col++) {
> - set_col_gpio_val(omap_kp, ~(1 << col));
> - state[col] = ~(get_row_gpio_val(omap_kp)) & 0xff;
> - }
> - set_col_gpio_val(omap_kp, 0);
> -
> - } else {
> - /* disable keyboard interrupt and schedule for handling */
> - omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> + /* disable keyboard interrupt and schedule for handling */
> + omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
>
> - /* read the keypad status */
> - omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
> - for (col = 0; col < omap_kp->cols; col++) {
> - omap_writew(~(1 << col) & 0xff,
> - OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
> + /* read the keypad status */
> + omap_writew(0xff, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
> + for (col = 0; col < omap_kp->cols; col++) {
> + omap_writew(~(1 << col) & 0xff,
> + OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
>
> - udelay(omap_kp->delay);
> + udelay(omap_kp->delay);
>
> - state[col] = ~omap_readw(OMAP1_MPUIO_BASE +
> - OMAP_MPUIO_KBR_LATCH) & 0xff;
> - }
> - omap_writew(0x00, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
> - udelay(2);
> + state[col] = ~omap_readw(OMAP1_MPUIO_BASE +
> + OMAP_MPUIO_KBR_LATCH) & 0xff;
> }
> + omap_writew(0x00, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBC);
> + udelay(2);
> }
>
> static void omap_kp_tasklet(unsigned long data)
> @@ -222,14 +187,8 @@ static void omap_kp_tasklet(unsigned long data)
> mod_timer(&omap_kp_data->timer, jiffies + delay);
> } else {
> /* enable interrupts */
> - if (cpu_is_omap24xx()) {
> - int i;
> - for (i = 0; i < omap_kp_data->rows; i++)
> - enable_irq(gpio_to_irq(row_gpios[i]));
> - } else {
> - omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> - kp_cur_group = -1;
> - }
> + omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> + kp_cur_group = -1;
> }
> }
>
> @@ -242,6 +201,7 @@ static ssize_t omap_kp_enable_show(struct device *dev,
> static ssize_t omap_kp_enable_store(struct device *dev, struct device_attribute *attr,
> const char *buf, size_t count)
> {
> + struct omap_kp *omap_kp = dev_get_drvdata(dev);
> int state;
>
> if (sscanf(buf, "%u", &state) != 1)
> @@ -253,9 +213,9 @@ static ssize_t omap_kp_enable_store(struct device *dev, struct device_attribute
> mutex_lock(&kp_enable_mutex);
> if (state != kp_enable) {
> if (state)
> - enable_irq(INT_KEYBOARD);
> + enable_irq(omap_kp->irq);
> else
> - disable_irq(INT_KEYBOARD);
> + disable_irq(omap_kp->irq);
> kp_enable = state;
> }
> mutex_unlock(&kp_enable_mutex);
> @@ -289,7 +249,7 @@ static int __devinit omap_kp_probe(struct platform_device *pdev)
> struct omap_kp *omap_kp;
> struct input_dev *input_dev;
> struct omap_kp_platform_data *pdata = pdev->dev.platform_data;
> - int i, col_idx, row_idx, irq_idx, ret;
> + int i, col_idx, row_idx, ret;
> unsigned int row_shift, keycodemax;
>
> if (!pdata->rows || !pdata->cols || !pdata->keymap_data) {
> @@ -314,8 +274,7 @@ static int __devinit omap_kp_probe(struct platform_device *pdev)
> omap_kp->input = input_dev;
>
> /* Disable the interrupt for the MPUIO keyboard */
> - if (!cpu_is_omap24xx())
> - omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> + omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
>
> if (pdata->delay)
> omap_kp->delay = pdata->delay;
> @@ -328,31 +287,8 @@ static int __devinit omap_kp_probe(struct platform_device *pdev)
> omap_kp->rows = pdata->rows;
> omap_kp->cols = pdata->cols;
>
> - if (cpu_is_omap24xx()) {
> - /* Cols: outputs */
> - for (col_idx = 0; col_idx < omap_kp->cols; col_idx++) {
> - if (gpio_request(col_gpios[col_idx], "omap_kp_col") < 0) {
> - printk(KERN_ERR "Failed to request"
> - "GPIO%d for keypad\n",
> - col_gpios[col_idx]);
> - goto err1;
> - }
> - gpio_direction_output(col_gpios[col_idx], 0);
> - }
> - /* Rows: inputs */
> - for (row_idx = 0; row_idx < omap_kp->rows; row_idx++) {
> - if (gpio_request(row_gpios[row_idx], "omap_kp_row") < 0) {
> - printk(KERN_ERR "Failed to request"
> - "GPIO%d for keypad\n",
> - row_gpios[row_idx]);
> - goto err2;
> - }
> - gpio_direction_input(row_gpios[row_idx]);
> - }
> - } else {
> - col_idx = 0;
> - row_idx = 0;
> - }
> + col_idx = 0;
> + row_idx = 0;
>
> setup_timer(&omap_kp->timer, omap_kp_timer, (unsigned long)omap_kp);
>
> @@ -394,27 +330,16 @@ static int __devinit omap_kp_probe(struct platform_device *pdev)
>
> /* scan current status and enable interrupt */
> omap_kp_scan_keypad(omap_kp, keypad_state);
> - if (!cpu_is_omap24xx()) {
> - omap_kp->irq = platform_get_irq(pdev, 0);
> - if (omap_kp->irq >= 0) {
> - if (request_irq(omap_kp->irq, omap_kp_interrupt, 0,
> - "omap-keypad", omap_kp) < 0)
> - goto err4;
> - }
> - omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> - } else {
> - for (irq_idx = 0; irq_idx < omap_kp->rows; irq_idx++) {
> - if (request_irq(gpio_to_irq(row_gpios[irq_idx]),
> - omap_kp_interrupt,
> - IRQF_TRIGGER_FALLING,
> - "omap-keypad", omap_kp) < 0)
> - goto err5;
> - }
> + omap_kp->irq = platform_get_irq(pdev, 0);
> + if (omap_kp->irq >= 0) {
> + if (request_irq(omap_kp->irq, omap_kp_interrupt, 0,
> + "omap-keypad", omap_kp) < 0)
> + goto err4;
> }
> + omap_writew(0, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> +
> return 0;
> -err5:
> - for (i = irq_idx - 1; i >=0; i--)
> - free_irq(row_gpios[i], omap_kp);
> +
> err4:
> input_unregister_device(omap_kp->input);
> input_dev = NULL;
> @@ -423,7 +348,6 @@ err3:
> err2:
> for (i = row_idx - 1; i >=0; i--)
> gpio_free(row_gpios[i]);
> -err1:
> for (i = col_idx - 1; i >=0; i--)
> gpio_free(col_gpios[i]);
>
> @@ -439,18 +363,8 @@ static int __devexit omap_kp_remove(struct platform_device *pdev)
>
> /* disable keypad interrupt handling */
> tasklet_disable(&kp_tasklet);
> - if (cpu_is_omap24xx()) {
> - int i;
> - for (i = 0; i < omap_kp->cols; i++)
> - gpio_free(col_gpios[i]);
> - for (i = 0; i < omap_kp->rows; i++) {
> - gpio_free(row_gpios[i]);
> - free_irq(gpio_to_irq(row_gpios[i]), omap_kp);
> - }
> - } else {
> - omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> - free_irq(omap_kp->irq, omap_kp);
> - }
> + omap_writew(1, OMAP1_MPUIO_BASE + OMAP_MPUIO_KBD_MASKIT);
> + free_irq(omap_kp->irq, omap_kp);
>
FWIW,
Acked-by: Sourav Poddar <sourav.poddar at ti.com>
> del_timer_sync(&omap_kp->timer);
> tasklet_kill(&kp_tasklet);
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