Hi,
On Wed, Apr 14, 2010 at 03:10:48AM +0200, ext Arce, Abraham wrote:
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/input.h>
+#include <linux/input/matrix_keypad.h>
+#include <plat/omap_hwmod.h>
+#include <plat/omap_device.h>
should the platform_driver know about hwmod and omap_device ? Paul ?
Kevin ?
+struct omap_keypad {
+
unnecessary blank line.
+ struct platform_device *pdev;
generaly we save the struct device *.
+ struct omap_hwmod *oh;
+ const struct matrix_keypad_platform_data *pdata;
you should not save the platform_data here. Generaly you should only use
that to initialize fields on your structure. Remember that a
platform_data will be declared as __initdata.
+/* Interrupt thread primary handler, called in hard interrupt context */
+
+static irqreturn_t omap_keypad_interrupt(int irq, void *dev_id)
+{
+ struct omap_keypad *keypad_data = dev_id;
+
+ /* disable interrupts */
+ __raw_writel(OMAP4_DEF_IRQDISABLE, keypad_data->base +
+ OMAP4_KBD_IRQENABLE);
+
+ /* wake up handler thread */
+ return IRQ_WAKE_THREAD;
+
+}
+
+/* Interrupt thread handler thread */
+
+static irqreturn_t omap_keypad_threaded(int irq, void *dev_id)
+{
+ struct omap_keypad *keypad_data = dev_id;
+ struct input_dev *input = keypad_data->input;
+ unsigned char key_state[8];
+ int col, row, code;
+ u32 *new_state = (u32 *) key_state;
+
+ *new_state = __raw_readl(keypad_data->base +
+ OMAP4_KBD_FULLCODE31_0);
+ *(new_state + 1) = __raw_readl(keypad_data->base +
+ OMAP4_KBD_FULLCODE63_32);
+
+ for (col = 0; col < keypad_data->cols; col++) {
+ for (row = 0; row < keypad_data->rows; row++) {
+ code = MATRIX_SCAN_CODE(row, col,
+ keypad_data->row_shift);
+ if (code < 0) {
+ printk(KERN_INFO "Spurious key %d-%d\n",
+ col, row);
use dev_dbg()
+ continue;
+ }
+ input_report_key(input, keypad_data->keycodes[code],
+ key_state[col] & (1 << row));
missing input_sync()
+static int __devinit omap_keypad_probe(struct platform_device *pdev)
+{
[..]
+ length = snprintf(oh_name, hw_mod_name_len, "keyboard");
+ WARN(length >= hw_mod_name_len,
+ "String buffer overflow in keyboard device setup\n");
you're using snprintf() this WARN() shouldn't happen even, remove it.
+
+ oh = omap_hwmod_lookup(oh_name);
+ if (!oh)
+ pr_err("Could not look up %s\n", oh_name);
I think omap_hwmod and omap_device shouldn't be here, but at least use
dev_err();
+
+ pdata = kzalloc(sizeof(struct matrix_keypad_platform_data),
+ GFP_KERNEL);
this should come from platform code.
+
+ od = omap_device_build(name, id, oh, pdata,
+ sizeof(struct matrix_keypad_platform_data),
+ omap_keyboard_latency,
+ ARRAY_SIZE(omap_keyboard_latency), 1);
+ WARN(IS_ERR(od), "Could not build omap_device for %s %s\n",
+ name, oh_name);
this too.
+ status = input_register_device(keypad_data->input);
+ if (status < 0) {
+ dev_err(&pdev->dev, "failed to register input device\n");
+ goto failed_free_device;
+ }
+
+ omap_keypad_config(keypad_data);
registering and configuring should be done before requesting the irq.
--
balbi
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