diff options
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/keyboard/samsung-keypad.c | 103 |
1 files changed, 31 insertions, 72 deletions
diff --git a/drivers/input/keyboard/samsung-keypad.c b/drivers/input/keyboard/samsung-keypad.c index acc161966c3e..22e357b51024 100644 --- a/drivers/input/keyboard/samsung-keypad.c +++ b/drivers/input/keyboard/samsung-keypad.c @@ -309,7 +309,7 @@ static void samsung_keypad_parse_dt_gpio(struct device *dev, struct samsung_keypad *keypad) { struct device_node *np = dev->of_node; - int gpio, ret, row, col; + int gpio, error, row, col; for (row = 0; row < keypad->rows; row++) { gpio = of_get_named_gpio(np, "row-gpios", row); @@ -320,10 +320,11 @@ static void samsung_keypad_parse_dt_gpio(struct device *dev, continue; } - ret = gpio_request(gpio, "keypad-row"); - if (ret) - dev_err(dev, "keypad row[%d] gpio request failed\n", - row); + error = devm_gpio_request(dev, gpio, "keypad-row"); + if (error) + dev_err(dev, + "keypad row[%d] gpio request failed: %d\n", + row, error); } for (col = 0; col < keypad->cols; col++) { @@ -335,35 +336,19 @@ static void samsung_keypad_parse_dt_gpio(struct device *dev, continue; } - ret = gpio_request(gpio, "keypad-col"); - if (ret) - dev_err(dev, "keypad column[%d] gpio request failed\n", - col); + error = devm_gpio_request(dev, gpio, "keypad-col"); + if (error) + dev_err(dev, + "keypad column[%d] gpio request failed: %d\n", + col, error); } } - -static void samsung_keypad_dt_gpio_free(struct samsung_keypad *keypad) -{ - int cnt; - - for (cnt = 0; cnt < keypad->rows; cnt++) - if (gpio_is_valid(keypad->row_gpios[cnt])) - gpio_free(keypad->row_gpios[cnt]); - - for (cnt = 0; cnt < keypad->cols; cnt++) - if (gpio_is_valid(keypad->col_gpios[cnt])) - gpio_free(keypad->col_gpios[cnt]); -} #else static struct samsung_keypad_platdata *samsung_keypad_parse_dt(struct device *dev) { return NULL; } - -static void samsung_keypad_dt_gpio_free(struct samsung_keypad *keypad) -{ -} #endif static int samsung_keypad_probe(struct platform_device *pdev) @@ -405,36 +390,30 @@ static int samsung_keypad_probe(struct platform_device *pdev) row_shift = get_count_order(pdata->cols); keymap_size = (pdata->rows << row_shift) * sizeof(keypad->keycodes[0]); - keypad = kzalloc(sizeof(*keypad) + keymap_size, GFP_KERNEL); - input_dev = input_allocate_device(); - if (!keypad || !input_dev) { - error = -ENOMEM; - goto err_free_mem; - } + keypad = devm_kzalloc(&pdev->dev, sizeof(*keypad) + keymap_size, + GFP_KERNEL); + input_dev = devm_input_allocate_device(&pdev->dev); + if (!keypad || !input_dev) + return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - error = -ENODEV; - goto err_free_mem; - } + if (!res) + return -ENODEV; - keypad->base = ioremap(res->start, resource_size(res)); - if (!keypad->base) { - error = -EBUSY; - goto err_free_mem; - } + keypad->base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (!keypad->base) + return -EBUSY; - keypad->clk = clk_get(&pdev->dev, "keypad"); + keypad->clk = devm_clk_get(&pdev->dev, "keypad"); if (IS_ERR(keypad->clk)) { dev_err(&pdev->dev, "failed to get keypad clk\n"); - error = PTR_ERR(keypad->clk); - goto err_unmap_base; + return PTR_ERR(keypad->clk); } error = clk_prepare(keypad->clk); if (error) { dev_err(&pdev->dev, "keypad clock prepare failed\n"); - goto err_put_clk; + return error; } keypad->input_dev = input_dev; @@ -479,14 +458,15 @@ static int samsung_keypad_probe(struct platform_device *pdev) keypad->irq = platform_get_irq(pdev, 0); if (keypad->irq < 0) { error = keypad->irq; - goto err_put_clk; + goto err_unprepare_clk; } - error = request_threaded_irq(keypad->irq, NULL, samsung_keypad_irq, - IRQF_ONESHOT, dev_name(&pdev->dev), keypad); + error = devm_request_threaded_irq(&pdev->dev, keypad->irq, NULL, + samsung_keypad_irq, IRQF_ONESHOT, + dev_name(&pdev->dev), keypad); if (error) { dev_err(&pdev->dev, "failed to register keypad interrupt\n"); - goto err_put_clk; + goto err_unprepare_clk; } device_init_wakeup(&pdev->dev, pdata->wakeup); @@ -495,7 +475,7 @@ static int samsung_keypad_probe(struct platform_device *pdev) error = input_register_device(keypad->input_dev); if (error) - goto err_free_irq; + goto err_disable_runtime_pm; if (pdev->dev.of_node) { devm_kfree(&pdev->dev, (void *)pdata->keymap_data->keymap); @@ -504,22 +484,12 @@ static int samsung_keypad_probe(struct platform_device *pdev) } return 0; -err_free_irq: - free_irq(keypad->irq, keypad); +err_disable_runtime_pm: pm_runtime_disable(&pdev->dev); device_init_wakeup(&pdev->dev, 0); platform_set_drvdata(pdev, NULL); err_unprepare_clk: clk_unprepare(keypad->clk); -err_put_clk: - clk_put(keypad->clk); - samsung_keypad_dt_gpio_free(keypad); -err_unmap_base: - iounmap(keypad->base); -err_free_mem: - input_free_device(input_dev); - kfree(keypad); - return error; } @@ -533,18 +503,7 @@ static int samsung_keypad_remove(struct platform_device *pdev) input_unregister_device(keypad->input_dev); - /* - * It is safe to free IRQ after unregistering device because - * samsung_keypad_close will shut off interrupts. - */ - free_irq(keypad->irq, keypad); - clk_unprepare(keypad->clk); - clk_put(keypad->clk); - samsung_keypad_dt_gpio_free(keypad); - - iounmap(keypad->base); - kfree(keypad); return 0; } |
