[PATCH 07/17] Input: omap-keypad: Remove dependencies to mach includes
Poddar, Sourav
sourav.poddar at ti.com
Wed Sep 12 00:39:37 EDT 2012
Hi,
On Tue, Sep 11, 2012 at 11:57 PM, Felipe Balbi <balbi at ti.com> wrote:
> Hi,
>
> On Tue, Sep 11, 2012 at 10:56:34AM -0700, Tony Lindgren 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>
>
> This looks ok to me from a code standpoint. Sourav how does this look to
> you ?
>
The patch looks good to me. Makes perfect sense to remove the omap2+
code from the driver.
> FWIW:
>
> Reviewed-by: Felipe Balbi <balbi at ti.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);
>>
>> del_timer_sync(&omap_kp->timer);
>> tasklet_kill(&kp_tasklet);
>
> --
> balbi
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