| Message ID | 20120710061326.GA29257@core.coreip.homeip.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Dmitry, On Tue, Jul 10, 2012 at 11:43 AM, Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote: > Hi Sourav, > > On Fri, Jun 08, 2012 at 04:22:59PM +0530, Sourav Poddar wrote: >> Update the Documentation with omap4 keypad device tree >> binding information. >> Add device tree support for omap4 keypad driver. >> >> Tested on omap4430 sdp. >> > > Sorry for the delay, I have a few comments: > >> >> /* platform data */ >> pdata = pdev->dev.platform_data; >> - if (!pdata) { >> + if (np) { >> + of_property_read_u32(np, "keypad,num-rows", &num_rows); >> + of_property_read_u32(np, "keypad,num-columns", &num_cols); >> + if (!num_rows || !num_cols) { >> + dev_err(&pdev->dev, "number of keypad rows/columns not specified\n"); >> + return -EINVAL; >> + } >> + } else if (pdata) { >> + num_rows = pdata->rows; >> + num_cols = pdata->cols; >> + } else { >> dev_err(&pdev->dev, "no platform data defined\n"); >> return -EINVAL; >> } >> > > I believe drivers should use platform data if it is supplied and use DT > data if platform data is omitted. This way one can override firmware > data if needed. > > Does the patch below (if applied on top of your) work for you? > Yes, the above patch works fine for me. Acked-by: Sourav Poddar <sourav.poddar@ti.com> Note, I did some mux setting changes in the bootloader for DT case. Thanks, Sourav > Thanks. > > -- > Dmitry > > Input: omap4-keypad - misc fixes > > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > --- > > drivers/input/keyboard/omap4-keypad.c | 152 ++++++++++++++++----------------- > 1 file changed, 74 insertions(+), 78 deletions(-) > > > diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c > index d5a2d1a..033168e 100644 > --- a/drivers/input/keyboard/omap4-keypad.c > +++ b/drivers/input/keyboard/omap4-keypad.c > @@ -76,7 +76,6 @@ enum { > > struct omap4_keypad { > struct input_dev *input; > - struct matrix_keymap_data *keymap_data; > > void __iomem *base; > unsigned int irq; > @@ -88,7 +87,7 @@ struct omap4_keypad { > unsigned int row_shift; > bool no_autorepeat; > unsigned char key_state[8]; > - unsigned short keymap[]; > + unsigned short *keymap; > }; > > static int kbd_readl(struct omap4_keypad *keypad_data, u32 offset) > @@ -211,74 +210,52 @@ static void omap4_keypad_close(struct input_dev *input) > pm_runtime_put_sync(input->dev.parent); > } > > -static struct omap4_keypad *omap_keypad_parse_dt(struct device *dev, > - uint32_t rows, uint32_t cols, > - struct input_dev *input_dev) > +#ifdef CONFIG_OF > +static int __devinit omap4_keypad_parse_dt(struct device *dev, > + struct omap4_keypad *keypad_data) > { > struct device_node *np = dev->of_node; > - struct platform_device *pdev = to_platform_device(dev); > - struct omap4_keypad *keypad_data = platform_get_drvdata(pdev); > int error; > > - error = matrix_keypad_build_keymap(NULL, "linux,keymap", > - rows, cols, keypad_data->keymap, input_dev); > - if (error) { > - dev_err(&pdev->dev, "failed to build keymap\n"); > - input_free_device(input_dev); > + if (!np) { > + dev_err(dev, "missing DT data"); > + return -EINVAL; > + } > + > + of_property_read_u32(np, "keypad,num-rows", &keypad_data->rows); > + of_property_read_u32(np, "keypad,num-columns", &keypad_data->cols); > + if (!keypad_data->rows || !keypad_data->cols) { > + dev_err(dev, "number of keypad rows/columns not specified\n"); > + return -EINVAL; > } > > if (of_get_property(np, "linux,input-no-autorepeat", NULL)) > keypad_data->no_autorepeat = true; > > - return keypad_data; > + return 0; > +} > +#else > +static inline int omap4_keypad_parse_dt(struct device *dev, > + struct omap4_keypad *keypad_data) > +{ > + return -ENOSYS; > } > +#endif > > static int __devinit omap4_keypad_probe(struct platform_device *pdev) > { > - struct device *dev = &pdev->dev; > - struct device_node *np = dev->of_node; > - const struct omap4_keypad_platform_data *pdata; > + const struct omap4_keypad_platform_data *pdata = > + dev_get_platdata(&pdev->dev); > + const struct matrix_keymap_data *keymap_data = > + pdata ? pdata->keymap_data : NULL; > struct omap4_keypad *keypad_data; > struct input_dev *input_dev; > struct resource *res; > - resource_size_t size; > - unsigned int row_shift = 0, max_keys = 0; > - uint32_t num_rows = 0, num_cols = 0; > + unsigned int max_keys; > int rev; > int irq; > int error; > > - /* platform data */ > - pdata = pdev->dev.platform_data; > - if (np) { > - of_property_read_u32(np, "keypad,num-rows", &num_rows); > - of_property_read_u32(np, "keypad,num-columns", &num_cols); > - if (!num_rows || !num_cols) { > - dev_err(&pdev->dev, "number of keypad rows/columns not specified\n"); > - return -EINVAL; > - } > - } else if (pdata) { > - num_rows = pdata->rows; > - num_cols = pdata->cols; > - } else { > - dev_err(&pdev->dev, "no platform data defined\n"); > - return -EINVAL; > - } > - > - row_shift = get_count_order(num_cols); > - max_keys = num_rows << row_shift; > - > - keypad_data = devm_kzalloc(dev, sizeof(struct omap4_keypad) + > - max_keys * sizeof(keypad_data->keymap[0]), > - GFP_KERNEL); > - > - if (!keypad_data) { > - dev_err(&pdev->dev, "keypad_data memory allocation failed\n"); > - return -ENOMEM; > - } > - > - platform_set_drvdata(pdev, keypad_data); > - > res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > if (!res) { > dev_err(&pdev->dev, "no base address specified\n"); > @@ -291,9 +268,24 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) > return -EINVAL; > } > > - size = resource_size(res); > + keypad_data = kzalloc(sizeof(struct omap4_keypad), GFP_KERNEL); > + if (!keypad_data) { > + dev_err(&pdev->dev, "keypad_data memory allocation failed\n"); > + return -ENOMEM; > + } > + > + keypad_data->irq = irq; > + > + if (pdata) { > + keypad_data->rows = pdata->rows; > + keypad_data->cols = pdata->cols; > + } else { > + error = omap4_keypad_parse_dt(&pdev->dev, keypad_data); > + if (error) > + return error; > + } > > - res = request_mem_region(res->start, size, pdev->name); > + res = request_mem_region(res->start, resource_size(res), pdev->name); > if (!res) { > dev_err(&pdev->dev, "can't request mem region\n"); > error = -EBUSY; > @@ -307,15 +299,11 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) > goto err_release_mem; > } > > - keypad_data->rows = num_rows; > - keypad_data->cols = num_cols; > - keypad_data->irq = irq; > - keypad_data->row_shift = row_shift; > > /* > - * Enable clocks for the keypad module so that we can read > - * revision register. > - */ > + * Enable clocks for the keypad module so that we can read > + * revision register. > + */ > pm_runtime_enable(&pdev->dev); > error = pm_runtime_get_sync(&pdev->dev); > if (error) { > @@ -358,29 +346,30 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) > input_dev->open = omap4_keypad_open; > input_dev->close = omap4_keypad_close; > > - if (np) { > - keypad_data = omap_keypad_parse_dt(&pdev->dev, > - keypad_data->rows, keypad_data->cols, > - input_dev); > - } else { > - keypad_data->keymap_data = > - (struct matrix_keymap_data *)pdata->keymap_data; > - error = matrix_keypad_build_keymap(keypad_data->keymap_data, > - NULL, keypad_data->rows, keypad_data->cols, > - keypad_data->keymap, input_dev); > - if (error) { > - dev_err(&pdev->dev, "failed to build keymap\n"); > - goto err_free_input; > - } > - } > - > + input_set_capability(input_dev, EV_MSC, MSC_SCAN); > if (!keypad_data->no_autorepeat) > __set_bit(EV_REP, input_dev->evbit); > > - input_set_capability(input_dev, EV_MSC, MSC_SCAN); > - > input_set_drvdata(input_dev, keypad_data); > > + keypad_data->row_shift = get_count_order(keypad_data->cols); > + max_keys = keypad_data->rows << keypad_data->row_shift; > + keypad_data->keymap = kzalloc(max_keys * sizeof(keypad_data->keymap[0]), > + GFP_KERNEL); > + if (!keypad_data->keymap) { > + dev_err(&pdev->dev, "Not enough memory for keymap\n"); > + error = -ENOMEM; > + goto err_free_input; > + } > + > + error = matrix_keypad_build_keymap(keymap_data, NULL, > + keypad_data->rows, keypad_data->cols, > + keypad_data->keymap, input_dev); > + if (error) { > + dev_err(&pdev->dev, "failed to build keymap\n"); > + goto err_free_keymap; > + } > + > error = request_irq(keypad_data->irq, omap4_keypad_interrupt, > IRQF_TRIGGER_RISING, > "omap4-keypad", keypad_data); > @@ -397,11 +386,14 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) > goto err_pm_disable; > } > > + platform_set_drvdata(pdev, keypad_data); > return 0; > > err_pm_disable: > pm_runtime_disable(&pdev->dev); > free_irq(keypad_data->irq, keypad_data); > +err_free_keymap: > + kfree(keypad_data->keymap); > err_free_input: > input_free_device(input_dev); > err_pm_put_sync: > @@ -409,7 +401,7 @@ err_pm_put_sync: > err_unmap: > iounmap(keypad_data->base); > err_release_mem: > - release_mem_region(res->start, size); > + release_mem_region(res->start, resource_size(res)); > err_free_keypad: > kfree(keypad_data); > return error; > @@ -431,17 +423,21 @@ static int __devexit omap4_keypad_remove(struct platform_device *pdev) > res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > release_mem_region(res->start, resource_size(res)); > > + kfree(keypad_data->keymap); > kfree(keypad_data); > + > platform_set_drvdata(pdev, NULL); > > return 0; > } > > +#ifdef CONFIG_OF > static const struct of_device_id omap_keypad_dt_match[] = { > { .compatible = "ti,omap4-keypad" }, > {}, > }; > MODULE_DEVICE_TABLE(of, omap_keypad_dt_match); > +#endif > > static struct platform_driver omap4_keypad_driver = { > .probe = omap4_keypad_probe, -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Dmitry, On Wed, Jul 11, 2012 at 3:15 PM, Poddar, Sourav <sourav.poddar@ti.com> wrote: > Hi Dmitry, > > On Tue, Jul 10, 2012 at 11:43 AM, Dmitry Torokhov > <dmitry.torokhov@gmail.com> wrote: >> Hi Sourav, >> >> On Fri, Jun 08, 2012 at 04:22:59PM +0530, Sourav Poddar wrote: >>> Update the Documentation with omap4 keypad device tree >>> binding information. >>> Add device tree support for omap4 keypad driver. >>> >>> Tested on omap4430 sdp. >>> >> >> Sorry for the delay, I have a few comments: >> >>> >>> /* platform data */ >>> pdata = pdev->dev.platform_data; >>> - if (!pdata) { >>> + if (np) { >>> + of_property_read_u32(np, "keypad,num-rows", &num_rows); >>> + of_property_read_u32(np, "keypad,num-columns", &num_cols); >>> + if (!num_rows || !num_cols) { >>> + dev_err(&pdev->dev, "number of keypad rows/columns not specified\n"); >>> + return -EINVAL; >>> + } >>> + } else if (pdata) { >>> + num_rows = pdata->rows; >>> + num_cols = pdata->cols; >>> + } else { >>> dev_err(&pdev->dev, "no platform data defined\n"); >>> return -EINVAL; >>> } >>> >> >> I believe drivers should use platform data if it is supplied and use DT >> data if platform data is omitted. This way one can override firmware >> data if needed. >> >> Does the patch below (if applied on top of your) work for you? >> > Yes, the above patch works fine for me. > Acked-by: Sourav Poddar <sourav.poddar@ti.com> > > Note, I did some mux setting changes in the bootloader for DT case. > To be explicit, these was done throughout for testing. Nothing specific to your incremental patch. > Thanks, > Sourav >> Thanks. >> >> -- >> Dmitry >> >> Input: omap4-keypad - misc fixes >> >> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> >> --- >> >> drivers/input/keyboard/omap4-keypad.c | 152 ++++++++++++++++----------------- >> 1 file changed, 74 insertions(+), 78 deletions(-) >> >> >> diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c >> index d5a2d1a..033168e 100644 >> --- a/drivers/input/keyboard/omap4-keypad.c >> +++ b/drivers/input/keyboard/omap4-keypad.c >> @@ -76,7 +76,6 @@ enum { >> >> struct omap4_keypad { >> struct input_dev *input; >> - struct matrix_keymap_data *keymap_data; >> >> void __iomem *base; >> unsigned int irq; >> @@ -88,7 +87,7 @@ struct omap4_keypad { >> unsigned int row_shift; >> bool no_autorepeat; >> unsigned char key_state[8]; >> - unsigned short keymap[]; >> + unsigned short *keymap; >> }; >> >> static int kbd_readl(struct omap4_keypad *keypad_data, u32 offset) >> @@ -211,74 +210,52 @@ static void omap4_keypad_close(struct input_dev *input) >> pm_runtime_put_sync(input->dev.parent); >> } >> >> -static struct omap4_keypad *omap_keypad_parse_dt(struct device *dev, >> - uint32_t rows, uint32_t cols, >> - struct input_dev *input_dev) >> +#ifdef CONFIG_OF >> +static int __devinit omap4_keypad_parse_dt(struct device *dev, >> + struct omap4_keypad *keypad_data) >> { >> struct device_node *np = dev->of_node; >> - struct platform_device *pdev = to_platform_device(dev); >> - struct omap4_keypad *keypad_data = platform_get_drvdata(pdev); >> int error; >> >> - error = matrix_keypad_build_keymap(NULL, "linux,keymap", >> - rows, cols, keypad_data->keymap, input_dev); >> - if (error) { >> - dev_err(&pdev->dev, "failed to build keymap\n"); >> - input_free_device(input_dev); >> + if (!np) { >> + dev_err(dev, "missing DT data"); >> + return -EINVAL; >> + } >> + >> + of_property_read_u32(np, "keypad,num-rows", &keypad_data->rows); >> + of_property_read_u32(np, "keypad,num-columns", &keypad_data->cols); >> + if (!keypad_data->rows || !keypad_data->cols) { >> + dev_err(dev, "number of keypad rows/columns not specified\n"); >> + return -EINVAL; >> } >> >> if (of_get_property(np, "linux,input-no-autorepeat", NULL)) >> keypad_data->no_autorepeat = true; >> >> - return keypad_data; >> + return 0; >> +} >> +#else >> +static inline int omap4_keypad_parse_dt(struct device *dev, >> + struct omap4_keypad *keypad_data) >> +{ >> + return -ENOSYS; >> } >> +#endif >> >> static int __devinit omap4_keypad_probe(struct platform_device *pdev) >> { >> - struct device *dev = &pdev->dev; >> - struct device_node *np = dev->of_node; >> - const struct omap4_keypad_platform_data *pdata; >> + const struct omap4_keypad_platform_data *pdata = >> + dev_get_platdata(&pdev->dev); >> + const struct matrix_keymap_data *keymap_data = >> + pdata ? pdata->keymap_data : NULL; >> struct omap4_keypad *keypad_data; >> struct input_dev *input_dev; >> struct resource *res; >> - resource_size_t size; >> - unsigned int row_shift = 0, max_keys = 0; >> - uint32_t num_rows = 0, num_cols = 0; >> + unsigned int max_keys; >> int rev; >> int irq; >> int error; >> >> - /* platform data */ >> - pdata = pdev->dev.platform_data; >> - if (np) { >> - of_property_read_u32(np, "keypad,num-rows", &num_rows); >> - of_property_read_u32(np, "keypad,num-columns", &num_cols); >> - if (!num_rows || !num_cols) { >> - dev_err(&pdev->dev, "number of keypad rows/columns not specified\n"); >> - return -EINVAL; >> - } >> - } else if (pdata) { >> - num_rows = pdata->rows; >> - num_cols = pdata->cols; >> - } else { >> - dev_err(&pdev->dev, "no platform data defined\n"); >> - return -EINVAL; >> - } >> - >> - row_shift = get_count_order(num_cols); >> - max_keys = num_rows << row_shift; >> - >> - keypad_data = devm_kzalloc(dev, sizeof(struct omap4_keypad) + >> - max_keys * sizeof(keypad_data->keymap[0]), >> - GFP_KERNEL); >> - >> - if (!keypad_data) { >> - dev_err(&pdev->dev, "keypad_data memory allocation failed\n"); >> - return -ENOMEM; >> - } >> - >> - platform_set_drvdata(pdev, keypad_data); >> - >> res = platform_get_resource(pdev, IORESOURCE_MEM, 0); >> if (!res) { >> dev_err(&pdev->dev, "no base address specified\n"); >> @@ -291,9 +268,24 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) >> return -EINVAL; >> } >> >> - size = resource_size(res); >> + keypad_data = kzalloc(sizeof(struct omap4_keypad), GFP_KERNEL); >> + if (!keypad_data) { >> + dev_err(&pdev->dev, "keypad_data memory allocation failed\n"); >> + return -ENOMEM; >> + } >> + >> + keypad_data->irq = irq; >> + >> + if (pdata) { >> + keypad_data->rows = pdata->rows; >> + keypad_data->cols = pdata->cols; >> + } else { >> + error = omap4_keypad_parse_dt(&pdev->dev, keypad_data); >> + if (error) >> + return error; >> + } >> >> - res = request_mem_region(res->start, size, pdev->name); >> + res = request_mem_region(res->start, resource_size(res), pdev->name); >> if (!res) { >> dev_err(&pdev->dev, "can't request mem region\n"); >> error = -EBUSY; >> @@ -307,15 +299,11 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) >> goto err_release_mem; >> } >> >> - keypad_data->rows = num_rows; >> - keypad_data->cols = num_cols; >> - keypad_data->irq = irq; >> - keypad_data->row_shift = row_shift; >> >> /* >> - * Enable clocks for the keypad module so that we can read >> - * revision register. >> - */ >> + * Enable clocks for the keypad module so that we can read >> + * revision register. >> + */ >> pm_runtime_enable(&pdev->dev); >> error = pm_runtime_get_sync(&pdev->dev); >> if (error) { >> @@ -358,29 +346,30 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) >> input_dev->open = omap4_keypad_open; >> input_dev->close = omap4_keypad_close; >> >> - if (np) { >> - keypad_data = omap_keypad_parse_dt(&pdev->dev, >> - keypad_data->rows, keypad_data->cols, >> - input_dev); >> - } else { >> - keypad_data->keymap_data = >> - (struct matrix_keymap_data *)pdata->keymap_data; >> - error = matrix_keypad_build_keymap(keypad_data->keymap_data, >> - NULL, keypad_data->rows, keypad_data->cols, >> - keypad_data->keymap, input_dev); >> - if (error) { >> - dev_err(&pdev->dev, "failed to build keymap\n"); >> - goto err_free_input; >> - } >> - } >> - >> + input_set_capability(input_dev, EV_MSC, MSC_SCAN); >> if (!keypad_data->no_autorepeat) >> __set_bit(EV_REP, input_dev->evbit); >> >> - input_set_capability(input_dev, EV_MSC, MSC_SCAN); >> - >> input_set_drvdata(input_dev, keypad_data); >> >> + keypad_data->row_shift = get_count_order(keypad_data->cols); >> + max_keys = keypad_data->rows << keypad_data->row_shift; >> + keypad_data->keymap = kzalloc(max_keys * sizeof(keypad_data->keymap[0]), >> + GFP_KERNEL); >> + if (!keypad_data->keymap) { >> + dev_err(&pdev->dev, "Not enough memory for keymap\n"); >> + error = -ENOMEM; >> + goto err_free_input; >> + } >> + >> + error = matrix_keypad_build_keymap(keymap_data, NULL, >> + keypad_data->rows, keypad_data->cols, >> + keypad_data->keymap, input_dev); >> + if (error) { >> + dev_err(&pdev->dev, "failed to build keymap\n"); >> + goto err_free_keymap; >> + } >> + >> error = request_irq(keypad_data->irq, omap4_keypad_interrupt, >> IRQF_TRIGGER_RISING, >> "omap4-keypad", keypad_data); >> @@ -397,11 +386,14 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) >> goto err_pm_disable; >> } >> >> + platform_set_drvdata(pdev, keypad_data); >> return 0; >> >> err_pm_disable: >> pm_runtime_disable(&pdev->dev); >> free_irq(keypad_data->irq, keypad_data); >> +err_free_keymap: >> + kfree(keypad_data->keymap); >> err_free_input: >> input_free_device(input_dev); >> err_pm_put_sync: >> @@ -409,7 +401,7 @@ err_pm_put_sync: >> err_unmap: >> iounmap(keypad_data->base); >> err_release_mem: >> - release_mem_region(res->start, size); >> + release_mem_region(res->start, resource_size(res)); >> err_free_keypad: >> kfree(keypad_data); >> return error; >> @@ -431,17 +423,21 @@ static int __devexit omap4_keypad_remove(struct platform_device *pdev) >> res = platform_get_resource(pdev, IORESOURCE_MEM, 0); >> release_mem_region(res->start, resource_size(res)); >> >> + kfree(keypad_data->keymap); >> kfree(keypad_data); >> + >> platform_set_drvdata(pdev, NULL); >> >> return 0; >> } >> >> +#ifdef CONFIG_OF >> static const struct of_device_id omap_keypad_dt_match[] = { >> { .compatible = "ti,omap4-keypad" }, >> {}, >> }; >> MODULE_DEVICE_TABLE(of, omap_keypad_dt_match); >> +#endif >> >> static struct platform_driver omap4_keypad_driver = { >> .probe = omap4_keypad_probe, -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c index d5a2d1a..033168e 100644 --- a/drivers/input/keyboard/omap4-keypad.c +++ b/drivers/input/keyboard/omap4-keypad.c @@ -76,7 +76,6 @@ enum { struct omap4_keypad { struct input_dev *input; - struct matrix_keymap_data *keymap_data; void __iomem *base; unsigned int irq; @@ -88,7 +87,7 @@ struct omap4_keypad { unsigned int row_shift; bool no_autorepeat; unsigned char key_state[8]; - unsigned short keymap[]; + unsigned short *keymap; }; static int kbd_readl(struct omap4_keypad *keypad_data, u32 offset) @@ -211,74 +210,52 @@ static void omap4_keypad_close(struct input_dev *input) pm_runtime_put_sync(input->dev.parent); } -static struct omap4_keypad *omap_keypad_parse_dt(struct device *dev, - uint32_t rows, uint32_t cols, - struct input_dev *input_dev) +#ifdef CONFIG_OF +static int __devinit omap4_keypad_parse_dt(struct device *dev, + struct omap4_keypad *keypad_data) { struct device_node *np = dev->of_node; - struct platform_device *pdev = to_platform_device(dev); - struct omap4_keypad *keypad_data = platform_get_drvdata(pdev); int error; - error = matrix_keypad_build_keymap(NULL, "linux,keymap", - rows, cols, keypad_data->keymap, input_dev); - if (error) { - dev_err(&pdev->dev, "failed to build keymap\n"); - input_free_device(input_dev); + if (!np) { + dev_err(dev, "missing DT data"); + return -EINVAL; + } + + of_property_read_u32(np, "keypad,num-rows", &keypad_data->rows); + of_property_read_u32(np, "keypad,num-columns", &keypad_data->cols); + if (!keypad_data->rows || !keypad_data->cols) { + dev_err(dev, "number of keypad rows/columns not specified\n"); + return -EINVAL; } if (of_get_property(np, "linux,input-no-autorepeat", NULL)) keypad_data->no_autorepeat = true; - return keypad_data; + return 0; +} +#else +static inline int omap4_keypad_parse_dt(struct device *dev, + struct omap4_keypad *keypad_data) +{ + return -ENOSYS; } +#endif static int __devinit omap4_keypad_probe(struct platform_device *pdev) { - struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; - const struct omap4_keypad_platform_data *pdata; + const struct omap4_keypad_platform_data *pdata = + dev_get_platdata(&pdev->dev); + const struct matrix_keymap_data *keymap_data = + pdata ? pdata->keymap_data : NULL; struct omap4_keypad *keypad_data; struct input_dev *input_dev; struct resource *res; - resource_size_t size; - unsigned int row_shift = 0, max_keys = 0; - uint32_t num_rows = 0, num_cols = 0; + unsigned int max_keys; int rev; int irq; int error; - /* platform data */ - pdata = pdev->dev.platform_data; - if (np) { - of_property_read_u32(np, "keypad,num-rows", &num_rows); - of_property_read_u32(np, "keypad,num-columns", &num_cols); - if (!num_rows || !num_cols) { - dev_err(&pdev->dev, "number of keypad rows/columns not specified\n"); - return -EINVAL; - } - } else if (pdata) { - num_rows = pdata->rows; - num_cols = pdata->cols; - } else { - dev_err(&pdev->dev, "no platform data defined\n"); - return -EINVAL; - } - - row_shift = get_count_order(num_cols); - max_keys = num_rows << row_shift; - - keypad_data = devm_kzalloc(dev, sizeof(struct omap4_keypad) + - max_keys * sizeof(keypad_data->keymap[0]), - GFP_KERNEL); - - if (!keypad_data) { - dev_err(&pdev->dev, "keypad_data memory allocation failed\n"); - return -ENOMEM; - } - - platform_set_drvdata(pdev, keypad_data); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(&pdev->dev, "no base address specified\n"); @@ -291,9 +268,24 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) return -EINVAL; } - size = resource_size(res); + keypad_data = kzalloc(sizeof(struct omap4_keypad), GFP_KERNEL); + if (!keypad_data) { + dev_err(&pdev->dev, "keypad_data memory allocation failed\n"); + return -ENOMEM; + } + + keypad_data->irq = irq; + + if (pdata) { + keypad_data->rows = pdata->rows; + keypad_data->cols = pdata->cols; + } else { + error = omap4_keypad_parse_dt(&pdev->dev, keypad_data); + if (error) + return error; + } - res = request_mem_region(res->start, size, pdev->name); + res = request_mem_region(res->start, resource_size(res), pdev->name); if (!res) { dev_err(&pdev->dev, "can't request mem region\n"); error = -EBUSY; @@ -307,15 +299,11 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) goto err_release_mem; } - keypad_data->rows = num_rows; - keypad_data->cols = num_cols; - keypad_data->irq = irq; - keypad_data->row_shift = row_shift; /* - * Enable clocks for the keypad module so that we can read - * revision register. - */ + * Enable clocks for the keypad module so that we can read + * revision register. + */ pm_runtime_enable(&pdev->dev); error = pm_runtime_get_sync(&pdev->dev); if (error) { @@ -358,29 +346,30 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) input_dev->open = omap4_keypad_open; input_dev->close = omap4_keypad_close; - if (np) { - keypad_data = omap_keypad_parse_dt(&pdev->dev, - keypad_data->rows, keypad_data->cols, - input_dev); - } else { - keypad_data->keymap_data = - (struct matrix_keymap_data *)pdata->keymap_data; - error = matrix_keypad_build_keymap(keypad_data->keymap_data, - NULL, keypad_data->rows, keypad_data->cols, - keypad_data->keymap, input_dev); - if (error) { - dev_err(&pdev->dev, "failed to build keymap\n"); - goto err_free_input; - } - } - + input_set_capability(input_dev, EV_MSC, MSC_SCAN); if (!keypad_data->no_autorepeat) __set_bit(EV_REP, input_dev->evbit); - input_set_capability(input_dev, EV_MSC, MSC_SCAN); - input_set_drvdata(input_dev, keypad_data); + keypad_data->row_shift = get_count_order(keypad_data->cols); + max_keys = keypad_data->rows << keypad_data->row_shift; + keypad_data->keymap = kzalloc(max_keys * sizeof(keypad_data->keymap[0]), + GFP_KERNEL); + if (!keypad_data->keymap) { + dev_err(&pdev->dev, "Not enough memory for keymap\n"); + error = -ENOMEM; + goto err_free_input; + } + + error = matrix_keypad_build_keymap(keymap_data, NULL, + keypad_data->rows, keypad_data->cols, + keypad_data->keymap, input_dev); + if (error) { + dev_err(&pdev->dev, "failed to build keymap\n"); + goto err_free_keymap; + } + error = request_irq(keypad_data->irq, omap4_keypad_interrupt, IRQF_TRIGGER_RISING, "omap4-keypad", keypad_data); @@ -397,11 +386,14 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev) goto err_pm_disable; } + platform_set_drvdata(pdev, keypad_data); return 0; err_pm_disable: pm_runtime_disable(&pdev->dev); free_irq(keypad_data->irq, keypad_data); +err_free_keymap: + kfree(keypad_data->keymap); err_free_input: input_free_device(input_dev); err_pm_put_sync: @@ -409,7 +401,7 @@ err_pm_put_sync: err_unmap: iounmap(keypad_data->base); err_release_mem: - release_mem_region(res->start, size); + release_mem_region(res->start, resource_size(res)); err_free_keypad: kfree(keypad_data); return error; @@ -431,17 +423,21 @@ static int __devexit omap4_keypad_remove(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); release_mem_region(res->start, resource_size(res)); + kfree(keypad_data->keymap); kfree(keypad_data); + platform_set_drvdata(pdev, NULL); return 0; } +#ifdef CONFIG_OF static const struct of_device_id omap_keypad_dt_match[] = { { .compatible = "ti,omap4-keypad" }, {}, }; MODULE_DEVICE_TABLE(of, omap_keypad_dt_match); +#endif static struct platform_driver omap4_keypad_driver = { .probe = omap4_keypad_probe,