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Date: Thu, 13 Feb 2014 13:33:28 -0800
From: Christopher Heiny <cheiny@...aptics.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
CC: Andrew Duggan <aduggan@...aptics.com>,
Vincent Huang <vincent.huang@...synaptics.com>,
Vivian Ly <vly@...aptics.com>,
Daniel Rosenberg <daniel.rosenberg@...aptics.com>,
Linus Walleij <linus.walleij@...ricsson.com>,
Benjamin Tissoires <benjamin.tissoires@...hat.com>,
Courtney Cavin <courtney.cavin@...ymobile.com>,
Linux Input <linux-input@...r.kernel.org>,
Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 11/11] Input: synaptics-rmi4 - remove data pointer from
RMI fucntion structure
On 02/12/2014 09:27 PM, Dmitry Torokhov wrote:
> Device core provides way of accessing driver-private data, we should
> use it.
>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Acked-by: Christopher Heiny <cheiny@...aptics.com>
> ---
> drivers/input/rmi4/rmi_bus.h | 1 -
> drivers/input/rmi4/rmi_f01.c | 14 +++++------
> drivers/input/rmi4/rmi_f11.c | 57 ++++++++++++++++++++------------------------
> 3 files changed, 32 insertions(+), 40 deletions(-)
>
> diff --git a/drivers/input/rmi4/rmi_bus.h b/drivers/input/rmi4/rmi_bus.h
> index 02a2af8..5ad94c6 100644
> --- a/drivers/input/rmi4/rmi_bus.h
> +++ b/drivers/input/rmi4/rmi_bus.h
> @@ -48,7 +48,6 @@ struct rmi_function {
> int num_of_irqs;
> int irq_pos;
> unsigned long *irq_mask;
> - void *data;
> struct list_head node;
>
> #ifdef CONFIG_RMI4_DEBUG
> diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
> index 36fcf8d..e646f60 100644
> --- a/drivers/input/rmi4/rmi_f01.c
> +++ b/drivers/input/rmi4/rmi_f01.c
> @@ -354,14 +354,14 @@ static int rmi_f01_probe(struct rmi_function *fn)
> return -EINVAL;
> }
>
> - fn->data = f01;
> + dev_set_drvdata(&fn->dev, f01);
>
> return 0;
> }
>
> static int rmi_f01_config(struct rmi_function *fn)
> {
> - struct f01_data *f01 = fn->data;
> + struct f01_data *f01 = dev_get_drvdata(&fn->dev);
> int error;
>
> error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr,
> @@ -419,8 +419,7 @@ static int rmi_f01_config(struct rmi_function *fn)
> static int rmi_f01_suspend(struct device *dev)
> {
> struct rmi_function *fn = to_rmi_function(dev);
> - struct rmi_device *rmi_dev = fn->rmi_dev;
> - struct f01_data *f01 = fn->data;
> + struct f01_data *f01 = dev_get_drvdata(&fn->dev);
> int error;
>
> f01->old_nosleep =
> @@ -430,7 +429,7 @@ static int rmi_f01_suspend(struct device *dev)
> f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK;
> f01->device_control.ctrl0 |= RMI_SLEEP_MODE_SENSOR_SLEEP;
>
> - error = rmi_write(rmi_dev, fn->fd.control_base_addr,
> + error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr,
> f01->device_control.ctrl0);
> if (error) {
> dev_err(&fn->dev, "Failed to write sleep mode: %d.\n", error);
> @@ -447,8 +446,7 @@ static int rmi_f01_suspend(struct device *dev)
> static int rmi_f01_resume(struct device *dev)
> {
> struct rmi_function *fn = to_rmi_function(dev);
> - struct rmi_device *rmi_dev = fn->rmi_dev;
> - struct f01_data *f01 = fn->data;
> + struct f01_data *f01 = dev_get_drvdata(&fn->dev);
> int error;
>
> if (f01->old_nosleep)
> @@ -457,7 +455,7 @@ static int rmi_f01_resume(struct device *dev)
> f01->device_control.ctrl0 &= ~RMI_F01_CTRL0_SLEEP_MODE_MASK;
> f01->device_control.ctrl0 |= RMI_SLEEP_MODE_NORMAL;
>
> - error = rmi_write(rmi_dev, fn->fd.control_base_addr,
> + error = rmi_write(fn->rmi_dev, fn->fd.control_base_addr,
> f01->device_control.ctrl0);
> if (error) {
> dev_err(&fn->dev,
> diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c
> index 5072437..a26b944 100644
> --- a/drivers/input/rmi4/rmi_f11.c
> +++ b/drivers/input/rmi4/rmi_f11.c
> @@ -1087,9 +1087,8 @@ static int rmi_f11_get_query_parameters(struct rmi_device *rmi_dev,
> /* This operation is done in a number of places, so we have a handy routine
> * for it.
> */
> -static void f11_set_abs_params(struct rmi_function *fn)
> +static void f11_set_abs_params(struct rmi_function *fn, struct f11_data *f11)
> {
> - struct f11_data *f11 = fn->data;
> struct f11_2d_sensor *sensor = &f11->sensor;
> struct input_dev *input = sensor->input;
> /* These two lines are not doing what we want them to. So we use
> @@ -1190,7 +1189,6 @@ static int rmi_f11_initialize(struct rmi_function *fn)
> if (!f11)
> return -ENOMEM;
>
> - fn->data = f11;
> f11->rezero_wait_ms = pdata->f11_rezero_wait;
>
> query_base_addr = fn->fd.query_base_addr;
> @@ -1280,13 +1278,16 @@ static int rmi_f11_initialize(struct rmi_function *fn)
> }
>
> mutex_init(&f11->dev_controls_mutex);
> +
> + dev_set_drvdata(&fn->dev, f11);
> +
> return 0;
> }
>
> static int rmi_f11_register_devices(struct rmi_function *fn)
> {
> struct rmi_device *rmi_dev = fn->rmi_dev;
> - struct f11_data *f11 = fn->data;
> + struct f11_data *f11 = dev_get_drvdata(&fn->dev);
> struct input_dev *input_dev;
> struct input_dev *input_dev_mouse;
> struct rmi_driver *driver = rmi_dev->driver;
> @@ -1304,8 +1305,8 @@ static int rmi_f11_register_devices(struct rmi_function *fn)
> rc = driver->set_input_params(rmi_dev, input_dev);
> if (rc < 0) {
> dev_err(&fn->dev,
> - "%s: Error in setting input device.\n",
> - __func__);
> + "%s: Error in setting input device.\n",
> + __func__);
> goto error_unregister;
> }
> }
> @@ -1319,7 +1320,7 @@ static int rmi_f11_register_devices(struct rmi_function *fn)
> set_bit(EV_ABS, input_dev->evbit);
> input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
>
> - f11_set_abs_params(fn);
> + f11_set_abs_params(fn, f11);
>
> if (sensor->sens_query.has_rel) {
> set_bit(EV_REL, input_dev->evbit);
> @@ -1327,7 +1328,7 @@ static int rmi_f11_register_devices(struct rmi_function *fn)
> set_bit(REL_Y, input_dev->relbit);
> }
> rc = input_register_device(input_dev);
> - if (rc < 0) {
> + if (rc) {
> input_free_device(input_dev);
> sensor->input = NULL;
> goto error_unregister;
> @@ -1347,8 +1348,8 @@ static int rmi_f11_register_devices(struct rmi_function *fn)
> input_dev_mouse);
> if (rc < 0) {
> dev_err(&fn->dev,
> - "%s: Error in setting input device.\n",
> - __func__);
> + "%s: Error in setting input device.\n",
> + __func__);
> goto error_unregister;
> }
> }
> @@ -1366,7 +1367,7 @@ static int rmi_f11_register_devices(struct rmi_function *fn)
> set_bit(BTN_RIGHT, input_dev_mouse->keybit);
>
> rc = input_register_device(input_dev_mouse);
> - if (rc < 0) {
> + if (rc) {
> input_free_device(input_dev_mouse);
> sensor->mouse_input = NULL;
> goto error_unregister;
> @@ -1390,19 +1391,9 @@ error_unregister:
> return rc;
> }
>
> -static void rmi_f11_free_devices(struct rmi_function *fn)
> -{
> - struct f11_data *f11 = fn->data;
> -
> - if (f11->sensor.input)
> - input_unregister_device(f11->sensor.input);
> - if (f11->sensor.mouse_input)
> - input_unregister_device(f11->sensor.mouse_input);
> -}
> -
> static int rmi_f11_config(struct rmi_function *fn)
> {
> - struct f11_data *f11 = fn->data;
> + struct f11_data *f11 = dev_get_drvdata(&fn->dev);
> int rc;
>
> rc = f11_write_control_regs(fn, &f11->sensor.sens_query,
> @@ -1416,7 +1407,7 @@ static int rmi_f11_config(struct rmi_function *fn)
> static int rmi_f11_attention(struct rmi_function *fn, unsigned long *irq_bits)
> {
> struct rmi_device *rmi_dev = fn->rmi_dev;
> - struct f11_data *f11 = fn->data;
> + struct f11_data *f11 = dev_get_drvdata(&fn->dev);
> u16 data_base_addr = fn->fd.data_base_addr;
> u16 data_base_addr_offset = 0;
> int error;
> @@ -1425,7 +1416,7 @@ static int rmi_f11_attention(struct rmi_function *fn, unsigned long *irq_bits)
> data_base_addr + data_base_addr_offset,
> f11->sensor.data_pkt,
> f11->sensor.pkt_size);
> - if (error < 0)
> + if (error)
> return error;
>
> rmi_f11_finger_handler(f11, &f11->sensor);
> @@ -1438,18 +1429,17 @@ static int rmi_f11_attention(struct rmi_function *fn, unsigned long *irq_bits)
> static int rmi_f11_resume(struct device *dev)
> {
> struct rmi_function *fn = to_rmi_function(dev);
> - struct rmi_device *rmi_dev = fn->rmi_dev;
> - struct f11_data *data = fn->data;
> + struct f11_data *f11 = dev_get_drvdata(&fn->dev);
> int error;
>
> dev_dbg(&fn->dev, "Resuming...\n");
> - if (!data->rezero_wait_ms)
> + if (!f11->rezero_wait_ms)
> return 0;
>
> - mdelay(data->rezero_wait_ms);
> + mdelay(f11->rezero_wait_ms);
>
> - error = rmi_write(rmi_dev, fn->fd.command_base_addr, RMI_F11_REZERO);
> - if (error < 0) {
> + error = rmi_write(fn->rmi_dev, fn->fd.command_base_addr, RMI_F11_REZERO);
> + if (error) {
> dev_err(&fn->dev,
> "%s: failed to issue rezero command, error = %d.",
> __func__, error);
> @@ -1479,7 +1469,12 @@ static int rmi_f11_probe(struct rmi_function *fn)
>
> static void rmi_f11_remove(struct rmi_function *fn)
> {
> - rmi_f11_free_devices(fn);
> + struct f11_data *f11 = dev_get_drvdata(&fn->dev);
> +
> + if (f11->sensor.input)
> + input_unregister_device(f11->sensor.input);
> + if (f11->sensor.mouse_input)
> + input_unregister_device(f11->sensor.mouse_input);
> }
>
> static struct rmi_function_handler rmi_f11_handler = {
>
--
Christopher Heiny
Senior Staff Firmware Engineer
Synaptics Incorporated
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