/*
* Copyright (C) 2010 Texas Instruments Inc
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/wait.h>
#include <linux/time.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <media/v4l2-device.h>
#include <media/davinci/vpbe_types.h>
#include <media/davinci/vpbe.h>
#include <media/davinci/vpss.h>
#include <media/davinci/vpbe_venc.h>
#define VPBE_DEFAULT_OUTPUT "Composite"
#define VPBE_DEFAULT_MODE "ntsc"
static char *def_output = VPBE_DEFAULT_OUTPUT;
static char *def_mode = VPBE_DEFAULT_MODE;
static int debug;
module_param(def_output, charp, S_IRUGO);
module_param(def_mode, charp, S_IRUGO);
module_param(debug, int, 0644);
MODULE_PARM_DESC(def_output, "vpbe output name (default:Composite)");
MODULE_PARM_DESC(def_mode, "vpbe output mode name (default:ntsc");
MODULE_PARM_DESC(debug, "Debug level 0-1");
MODULE_DESCRIPTION("TI DMXXX VPBE Display controller");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Texas Instruments");
/**
* vpbe_current_encoder_info - Get config info for current encoder
* @vpbe_dev - vpbe device ptr
*
* Return ptr to current encoder config info
*/
static struct encoder_config_info*
vpbe_current_encoder_info(struct vpbe_device *vpbe_dev)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
int index = vpbe_dev->current_sd_index;
return ((index == 0) ? &cfg->venc :
&cfg->ext_encoders[index-1]);
}
/**
* vpbe_find_encoder_sd_index - Given a name find encoder sd index
*
* @vpbe_config - ptr to vpbe cfg
* @output_index - index used by application
*
* Return sd index of the encoder
*/
static int vpbe_find_encoder_sd_index(struct vpbe_config *cfg,
int index)
{
char *encoder_name = cfg->outputs[index].subdev_name;
int i;
/* Venc is always first */
if (!strcmp(encoder_name, cfg->venc.module_name))
return 0;
for (i = 0; i < cfg->num_ext_encoders; i++) {
if (!strcmp(encoder_name,
cfg->ext_encoders[i].module_name))
return i+1;
}
return -EINVAL;
}
/**
* vpbe_g_cropcap - Get crop capabilities of the display
* @vpbe_dev - vpbe device ptr
* @cropcap - cropcap is a ptr to struct v4l2_cropcap
*
* Update the crop capabilities in crop cap for current
* mode
*/
static int vpbe_g_cropcap(struct vpbe_device *vpbe_dev,
struct v4l2_cropcap *cropcap)
{
if (NULL == cropcap)
return -EINVAL;
cropcap->bounds.left = 0;
cropcap->bounds.top = 0;
cropcap->bounds.width = vpbe_dev->current_timings.xres;
cropcap->bounds.height = vpbe_dev->current_timings.yres;
cropcap->defrect = cropcap->bounds;
return 0;
}
/**
* vpbe_enum_outputs - enumerate outputs
* @vpbe_dev - vpbe device ptr
* @output - ptr to v4l2_output structure
*
* Enumerates the outputs available at the vpbe display
* returns the status, -EINVAL if end of output list
*/
static int vpbe_enum_outputs(struct vpbe_device *vpbe_dev,
struct v4l2_output *output)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
int temp_index = output->index;
if (temp_index >= cfg->num_outputs)
return -EINVAL;
*output = cfg->outputs[temp_index].output;
output->index = temp_index;
return 0;
}
static int vpbe_get_mode_info(struct vpbe_device *vpbe_dev, char *mode,
int output_index)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
struct vpbe_enc_mode_info var;
int curr_output = output_index;
int i;
if (NULL == mode)
return -EINVAL;
for (i = 0; i < cfg->outputs[curr_output].num_modes; i++) {
var = cfg->outputs[curr_output].modes[i];
if (!strcmp(mode, var.name)) {
vpbe_dev->current_timings = var;
return 0;
}
}
return -EINVAL;
}
static int vpbe_get_current_mode_info(struct vpbe_device *vpbe_dev,
struct vpbe_enc_mode_info *mode_info)
{
if (NULL == mode_info)
return -EINVAL;
*mode_info = vpbe_dev->current_timings;
return 0;
}
/* Get std by std id */
static int vpbe_get_std_info(struct vpbe_device *vpbe_dev,
v4l2_std_id std_id)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
struct vpbe_enc_mode_info var;
int curr_output = vpbe_dev->current_out_index;
int i;
for (i = 0; i < vpbe_dev->cfg->outputs[curr_output].num_modes; i++) {
var = cfg->outputs[curr_output].modes[i];
if ((var.timings_type & VPBE_ENC_STD) &&
(var.std_id & std_id)) {
vpbe_dev->current_timings = var;
return 0;
}
}
return -EINVAL;
}
static int vpbe_get_std_info_by_name(struct vpbe_device *vpbe_dev,
char *std_name)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
struct vpbe_enc_mode_info var;
int curr_output = vpbe_dev->current_out_index;
int i;
for (i = 0; i < vpbe_dev->cfg->outputs[curr_output].num_modes; i++) {
var = cfg->outputs[curr_output].modes[i];
if (!strcmp(var.name, std_name)) {
vpbe_dev->current_timings = var;
return 0;
}
}
return -EINVAL;
}
/**
* vpbe_set_output - Set output
* @vpbe_dev - vpbe device ptr
* @index - index of output
*
* Set vpbe output to the output specified by the index
*/
static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
{
struct encoder_config_info *curr_enc_info =
vpbe_current_encoder_info(vpbe_dev);
struct vpbe_config *cfg = vpbe_dev->cfg;
struct venc_platform_data *venc_device = vpbe_dev->venc_device;
u32 if_params;
int enc_out_index;
int sd_index;
int ret = 0;
if (index >= cfg->num_outputs)
return -EINVAL;
mutex_lock(&vpbe_dev->lock);
sd_index = vpbe_dev->current_sd_index;
enc_out_index = cfg->outputs[index].output.index;
/*
* Currently we switch the encoder based on output selected
* by the application. If media controller is implemented later
* there is will be an API added to setup_link between venc
* and external encoder. So in that case below comparison always
* match and encoder will not be switched. But if application
* chose not to use media controller, then this provides current
* way of switching encoder at the venc output.
*/
if (strcmp(curr_enc_info->module_name,
cfg->outputs[index].subdev_name)) {
/* Need to switch the encoder at the output */
sd_index = vpbe_find_encoder_sd_index(cfg, index);
if (sd_index < 0) {
ret = -EINVAL;
goto out;
}
if_params = cfg->outputs[index].if_params;
venc_device->setup_if_config(if_params);
if (ret)
goto out;
}
/* Set output at the encoder */
ret = v4l2_subdev_call(vpbe_dev->encoders[sd_index], video,
s_routing, 0, enc_out_index, 0);
if (ret)
goto out;
/*
* It is assumed that venc or extenal encoder will set a default
* mode in the sub device. For external encoder or LCD pannel output,
* we also need to set up the lcd port for the required mode. So setup
* the lcd port for the default mode that is configured in the board
* arch/arm/mach-davinci/board-dm355-evm.setup file for the external
* encoder.
*/
ret = vpbe_get_mode_info(vpbe_dev,
cfg->outputs[index].default_mode, index);
if (!ret) {
struct osd_state *osd_device = vpbe_dev->osd_device;
osd_device->ops.set_left_margin(osd_device,
vpbe_dev->current_timings.left_margin);
osd_device->ops.set_top_margin(osd_device,
vpbe_dev->current_timings.upper_margin);
vpbe_dev->current_sd_index = sd_index;
vpbe_dev->current_out_index = index;
}
out:
mutex_unlock(&vpbe_dev->lock);
return ret;
}
static int vpbe_set_default_output(struct vpbe_device *vpbe_dev)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
int ret = 0;
int i;
for (i = 0; i < cfg->num_outputs; i++) {
if (!strcmp(def_output,
cfg->outputs[i].output.name)) {
ret = vpbe_set_output(vpbe_dev, i);
if (!ret)
vpbe_dev->current_out_index = i;
return ret;
}
}
return ret;
}
/**
* vpbe_get_output - Get output
* @vpbe_dev - vpbe device ptr
*
* return current vpbe output to the the index
*/
static unsigned int vpbe_get_output(struct vpbe_device *vpbe_dev)
{
return vpbe_dev->current_out_index;
}
/**
* vpbe_s_dv_timings - Set the given preset timings in the encoder
*
* Sets the timings if supported by the current encoder. Return the status.
* 0 - success & -EINVAL on error
*/
static int vpbe_s_dv_timings(struct vpbe_device *vpbe_dev,
struct v4l2_dv_timings *dv_timings)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
int out_index = vpbe_dev->current_out_index;
struct vpbe_output *output = &cfg->outputs[out_index];
int sd_index = vpbe_dev->current_sd_index;
int ret, i;
if (!(cfg->outputs[out_index].output.capabilities &
V4L2_OUT_CAP_DV_TIMINGS))
return -ENODATA;
for (i = 0; i < output->num_modes; i++) {
if (output->modes[i].timings_type == VPBE_ENC_DV_TIMINGS &&
!memcmp(&output->modes[i].dv_timings,
dv_timings, sizeof(*dv_timings)))
break;
}
if (i >= output->num_modes)
return -EINVAL;
vpbe_dev->current_timings = output->modes[i];
mutex_lock(&vpbe_dev->lock);
ret = v4l2_subdev_call(vpbe_dev->encoders[sd_index], video,
s_dv_timings, dv_timings);
if (!ret && (vpbe_dev->amp != NULL)) {
/* Call amplifier subdevice */
ret = v4l2_subdev_call(vpbe_dev->amp, video,
s_dv_timings, dv_timings);
}
/* set the lcd controller output for the given mode */
if (!ret) {
struct osd_state *osd_device = vpbe_dev->osd_device;
osd_device->ops.set_left_margin(osd_device,
vpbe_dev->current_timings.left_margin);
osd_device->ops.set_top_margin(osd_device,
vpbe_dev->current_timings.upper_margin);
}
mutex_unlock(&vpbe_dev->lock);
return ret;
}
/**
* vpbe_g_dv_timings - Get the timings in the current encoder
*
* Get the timings in the current encoder. Return the status. 0 - success
* -EINVAL on error
*/
static int vpbe_g_dv_timings(struct vpbe_device *vpbe_dev,
struct v4l2_dv_timings *dv_timings)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
int out_index = vpbe_dev->current_out_index;
if (!(cfg->outputs[out_index].output.capabilities &
V4L2_OUT_CAP_DV_TIMINGS))
return -ENODATA;
if (vpbe_dev->current_timings.timings_type &
VPBE_ENC_DV_TIMINGS) {
*dv_timings = vpbe_dev->current_timings.dv_timings;
return 0;
}
return -EINVAL;
}
/**
* vpbe_enum_dv_timings - Enumerate the dv timings in the current encoder
*
* Get the timings in the current encoder. Return the status. 0 - success
* -EINVAL on error
*/
static int vpbe_enum_dv_timings(struct vpbe_device *vpbe_dev,
struct v4l2_enum_dv_timings *timings)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
int out_index = vpbe_dev->current_out_index;
struct vpbe_output *output = &cfg->outputs[out_index];
int j = 0;
int i;
if (!(output->output.capabilities & V4L2_OUT_CAP_DV_TIMINGS))
return -ENODATA;
for (i = 0; i < output->num_modes; i++) {
if (output->modes[i].timings_type == VPBE_ENC_DV_TIMINGS) {
if (j == timings->index)
break;
j++;
}
}
if (i == output->num_modes)
return -EINVAL;
timings->timings = output->modes[i].dv_timings;
return 0;
}
/**
* vpbe_s_std - Set the given standard in the encoder
*
* Sets the standard if supported by the current encoder. Return the status.
* 0 - success & -EINVAL on error
*/
static int vpbe_s_std(struct vpbe_device *vpbe_dev, v4l2_std_id std_id)
{
struct vpbe_config *cfg = vpbe_dev->cfg;
int out_index = vpbe_dev->current_out_index;
int sd_index = vpbe_dev->current_sd_index;
int ret;
if (!(cfg->outputs[out_index].output.capabilities &
V4L2_OUT_CAP_STD))
return -ENODATA;
ret = vpbe_get_std_info(vpbe_dev, std_id);
if (ret)
return ret;
mutex_lock(&vpbe_dev->lock);
ret = v4l2_subdev_call(vpbe_dev->encoders[sd_index], video,
s_std_output, std_id);
/* set the lcd controller output for the given mode */
if (!ret) {
struct osd_state *osd_device = vpbe_dev->osd_device;
osd_device->ops.set_left_margin(osd_device,
vpbe_dev->current_timings.left_margin);
osd_device->ops.set_top_margin(osd_device,
vpbe_dev->current_timings.upper_margin);
}
mutex_unlock(&vpbe_dev->lock);
return ret;
}
/**
* vpbe_g_std - Get the standard in the current encoder
*
* Get the standard in the current encoder. Return the status. 0 - success
* -EINVAL on error
*/
static int vpbe_g_std(struct vpbe_device *vpbe_dev, v4l2_std_id *std_id)
{
struct vpbe_enc_mode_info *cur_timings = &vpbe_dev->current_timings;
struct vpbe_config *cfg = vpbe_dev->cfg;
int out_index = vpbe_dev->current_out_index;
if (!(cfg->outputs[out_index].output.capabilities & V4L2_OUT_CAP_STD))
return -ENODATA;
if (cur_timings->timings_type & VPBE_ENC_STD) {
*std_id = cur_timings->std_id;
return 0;
}
return -EINVAL;
}
/**
* vpbe_set_mode - Set mode in the current encoder using mode info
*
* Use the mode string to decide what timings to set in the encoder
* This is typically useful when fbset command is used to change the current
* timings by specifying a string to indicate the timings.
*/
static int vpbe_set_mode(struct vpbe_device *vpbe_dev,
struct vpbe_enc_mode_info *mode_info)
{
struct vpbe_enc_mode_info *preset_mode = NULL;
struct vpbe_config *cfg = vpbe_dev->cfg;
struct v4l2_dv_timings dv_timings;
struct osd_state *osd_device;
int out_index = vpbe_dev->current_out_index;
int ret = 0;
int i;
if ((NULL == mode_info) || (NULL == mode_info->name))
return -EINVAL;
for (i = 0; i < cfg->outputs[out_index].num_modes; i++) {
if (!strcmp(mode_info->name,
cfg->outputs[out_index].modes[i].name)) {
preset_mode = &cfg->outputs[out_index].modes[i];
/*
* it may be one of the 3 timings type. Check and
* invoke right API
*/
if (preset_mode->timings_type & VPBE_ENC_STD)
return vpbe_s_std(vpbe_dev,
preset_mode->std_id);
if (preset_mode->timings_type &
VPBE_ENC_DV_TIMINGS) {
dv_timings =
preset_mode->dv_timings;
return vpbe_s_dv_timings(vpbe_dev, &dv_timings);
}
}
}
/* Only custom timing should reach here */
if (preset_mode == NULL)
return -EINVAL;
mutex_lock(&vpbe_dev->lock);
osd_device = vpbe_dev->osd_device;
vpbe_dev->current_timings = *preset_mode;
osd_device->ops.set_left_margin(osd_device,
vpbe_dev->current_timings.left_margin);
osd_device->ops.set_top_margin(osd_device,
vpbe_dev->current_timings.upper_margin);
mutex_unlock(&vpbe_dev->lock);
return ret;
}
static int vpbe_set_default_mode(struct vpbe_device *vpbe_dev)
{
int ret;
ret = vpbe_get_std_info_by_name(vpbe_dev, def_mode);
if (ret)
return ret;
/* set the default mode in the encoder */
return vpbe_set_mode(vpbe_dev, &vpbe_dev->current_timings);
}
static int platform_device_get(struct device *dev, void *data)
{
struct platform_device *pdev = to_platform_device(dev);
struct vpbe_device *vpbe_dev = data;
if (strstr(pdev->name, "vpbe-osd") != NULL)
vpbe_dev->osd_device = platform_get_drvdata(pdev);
if (strstr(pdev->name, "vpbe-venc") != NULL)
vpbe_dev->venc_device = dev_get_platdata(&pdev->dev);
return 0;
}
/**
* vpbe_initialize() - Initialize the vpbe display controller
* @vpbe_dev - vpbe device ptr
*
* Master frame buffer device drivers calls this to initialize vpbe
* display controller. This will then registers v4l2 device and the sub
* devices and sets a current encoder sub device for display. v4l2 display
* device driver is the master and frame buffer display device driver is
* the slave. Frame buffer display driver checks the initialized during
* probe and exit if not initialized. Returns status.
*/
static int vpbe_initialize(struct device *dev, struct vpbe_device *vpbe_dev)
{
struct encoder_config_info *enc_info;
struct amp_config_info *amp_info;
struct v4l2_subdev **enc_subdev;
struct osd_state *osd_device;
struct i2c_adapter *i2c_adap;
int num_encoders;
int ret = 0;
int err;
int i;
/*
* v4l2 abd FBDev frame buffer devices will get the vpbe_dev pointer
* from the platform device by iteration of platform drivers and
* matching with device name
*/
if (NULL == vpbe_dev || NULL == dev) {
printk(KERN_ERR "Null device pointers.\n");
return -ENODEV;
}
if (vpbe_dev->initialized)
return 0;
mutex_lock(&vpbe_dev->lock);
if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
/* We have dac clock available for platform */
vpbe_dev->dac_clk = clk_get(vpbe_dev->pdev, "vpss_dac");
if (IS_ERR(vpbe_dev->dac_clk)) {
ret = PTR_ERR(vpbe_dev->dac_clk);
goto fail_mutex_unlock;
}
if (clk_prepare_enable(vpbe_dev->dac_clk)) {
ret = -ENODEV;
clk_put(vpbe_dev->dac_clk);
goto fail_mutex_unlock;
}
}
/* first enable vpss clocks */
vpss_enable_clock(VPSS_VPBE_CLOCK, 1);
/* First register a v4l2 device */
ret = v4l2_device_register(dev, &vpbe_dev->v4l2_dev);
if (ret) {
v4l2_err(dev->driver,
"Unable to register v4l2 device.\n");
goto fail_clk_put;
}
v4l2_info(&vpbe_dev->v4l2_dev, "vpbe v4l2 device registered\n");
err = bus_for_each_dev(&platform_bus_type, NULL, vpbe_dev,
platform_device_get);
if (err < 0) {
ret = err;
goto fail_dev_unregister;
}
vpbe_dev->venc = venc_sub_dev_init(&vpbe_dev->v4l2_dev,
vpbe_dev->cfg->venc.module_name);
/* register venc sub device */
if (vpbe_dev->venc == NULL) {
v4l2_err(&vpbe_dev->v4l2_dev,
"vpbe unable to init venc sub device\n");
ret = -ENODEV;
goto fail_dev_unregister;
}
/* initialize osd device */
osd_device = vpbe_dev->osd_device;
if (NULL != osd_device->ops.initialize) {
err = osd_device->ops.initialize(osd_device);
if (err) {
v4l2_err(&vpbe_dev->v4l2_dev,
"unable to initialize the OSD device");
err = -ENOMEM;
goto fail_dev_unregister;
}
}
/*
* Register any external encoders that are configured. At index 0 we
* store venc sd index.
*/
num_encoders = vpbe_dev->cfg->num_ext_encoders + 1;
vpbe_dev->encoders = kmalloc(
sizeof(struct v4l2_subdev *)*num_encoders,
GFP_KERNEL);
if (NULL == vpbe_dev->encoders) {
v4l2_err(&vpbe_dev->v4l2_dev,
"unable to allocate memory for encoders sub devices");
ret = -ENOMEM;
goto fail_dev_unregister;
}
i2c_adap = i2c_get_adapter(vpbe_dev->cfg->i2c_adapter_id);
for (i = 0; i < (vpbe_dev->cfg->num_ext_encoders + 1); i++) {
if (i == 0) {
/* venc is at index 0 */
enc_subdev = &vpbe_dev->encoders[i];
*enc_subdev = vpbe_dev->venc;
continue;
}
enc_info = &vpbe_dev->cfg->ext_encoders[i];
if (enc_info->is_i2c) {
enc_subdev = &vpbe_dev->encoders[i];
*enc_subdev = v4l2_i2c_new_subdev_board(
&vpbe_dev->v4l2_dev, i2c_adap,
&enc_info->board_info, NULL);
if (*enc_subdev)
v4l2_info(&vpbe_dev->v4l2_dev,
"v4l2 sub device %s registered\n",
enc_info->module_name);
else {
v4l2_err(&vpbe_dev->v4l2_dev, "encoder %s"
" failed to register",
enc_info->module_name);
ret = -ENODEV;
goto fail_kfree_encoders;
}
} else
v4l2_warn(&vpbe_dev->v4l2_dev, "non-i2c encoders"
" currently not supported");
}
/* Add amplifier subdevice for dm365 */
if ((strcmp(vpbe_dev->cfg->module_name, "dm365-vpbe-display") == 0) &&
vpbe_dev->cfg->amp != NULL) {
amp_info = vpbe_dev->cfg->amp;
if (amp_info->is_i2c) {
vpbe_dev->amp = v4l2_i2c_new_subdev_board(
&vpbe_dev->v4l2_dev, i2c_adap,
&_info->board_info, NULL);
if (!vpbe_dev->amp) {
v4l2_err(&vpbe_dev->v4l2_dev,
"amplifier %s failed to register",
amp_info->module_name);
ret = -ENODEV;
goto fail_kfree_encoders;
}
v4l2_info(&vpbe_dev->v4l2_dev,
"v4l2 sub device %s registered\n",
amp_info->module_name);
} else {
vpbe_dev->amp = NULL;
v4l2_warn(&vpbe_dev->v4l2_dev, "non-i2c amplifiers"
" currently not supported");
}
} else {
vpbe_dev->amp = NULL;
}
/* set the current encoder and output to that of venc by default */
vpbe_dev->current_sd_index = 0;
vpbe_dev->current_out_index = 0;
mutex_unlock(&vpbe_dev->lock);
printk(KERN_NOTICE "Setting default output to %s\n", def_output);
ret = vpbe_set_default_output(vpbe_dev);
if (ret) {
v4l2_err(&vpbe_dev->v4l2_dev, "Failed to set default output %s",
def_output);
return ret;
}
printk(KERN_NOTICE "Setting default mode to %s\n", def_mode);
ret = vpbe_set_default_mode(vpbe_dev);
if (ret) {
v4l2_err(&vpbe_dev->v4l2_dev, "Failed to set default mode %s",
def_mode);
return ret;
}
vpbe_dev->initialized = 1;
/* TBD handling of bootargs for default output and mode */
return 0;
fail_kfree_encoders:
kfree(vpbe_dev->encoders);
fail_dev_unregister:
v4l2_device_unregister(&vpbe_dev->v4l2_dev);
fail_clk_put:
if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
clk_disable_unprepare(vpbe_dev->dac_clk);
clk_put(vpbe_dev->dac_clk);
}
fail_mutex_unlock:
mutex_unlock(&vpbe_dev->lock);
return ret;
}
/**
* vpbe_deinitialize() - de-initialize the vpbe display controller
* @dev - Master and slave device ptr
*
* vpbe_master and slave frame buffer devices calls this to de-initialize
* the display controller. It is called when master and slave device
* driver modules are removed and no longer requires the display controller.
*/
static void vpbe_deinitialize(struct device *dev, struct vpbe_device *vpbe_dev)
{
v4l2_device_unregister(&vpbe_dev->v4l2_dev);
if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
clk_disable_unprepare(vpbe_dev->dac_clk);
clk_put(vpbe_dev->dac_clk);
}
kfree(vpbe_dev->amp);
kfree(vpbe_dev->encoders);
vpbe_dev->initialized = 0;
/* disable vpss clocks */
vpss_enable_clock(VPSS_VPBE_CLOCK, 0);
}
static struct vpbe_device_ops vpbe_dev_ops = {
.g_cropcap = vpbe_g_cropcap,
.enum_outputs = vpbe_enum_outputs,
.set_output = vpbe_set_output,
.get_output = vpbe_get_output,
.s_dv_timings = vpbe_s_dv_timings,
.g_dv_timings = vpbe_g_dv_timings,
.enum_dv_timings = vpbe_enum_dv_timings,
.s_std = vpbe_s_std,
.g_std = vpbe_g_std,
.initialize = vpbe_initialize,
.deinitialize = vpbe_deinitialize,
.get_mode_info = vpbe_get_current_mode_info,
.set_mode = vpbe_set_mode,
};
static int vpbe_probe(struct platform_device *pdev)
{
struct vpbe_device *vpbe_dev;
struct vpbe_config *cfg;
int ret = -EINVAL;
if (pdev->dev.platform_data == NULL) {
v4l2_err(pdev->dev.driver, "No platform data\n");
return -ENODEV;
}
cfg = pdev->dev.platform_data;
if (!cfg->module_name[0] ||
!cfg->osd.module_name[0] ||
!cfg->venc.module_name[0]) {
v4l2_err(pdev->dev.driver, "vpbe display module names not"
" defined\n");
return ret;
}
vpbe_dev = kzalloc(sizeof(*vpbe_dev), GFP_KERNEL);
if (vpbe_dev == NULL) {
v4l2_err(pdev->dev.driver, "Unable to allocate memory"
" for vpbe_device\n");
return -ENOMEM;
}
vpbe_dev->cfg = cfg;
vpbe_dev->ops = vpbe_dev_ops;
vpbe_dev->pdev = &pdev->dev;
if (cfg->outputs->num_modes > 0)
vpbe_dev->current_timings = vpbe_dev->cfg->outputs[0].modes[0];
else {
kfree(vpbe_dev);
return -ENODEV;
}
/* set the driver data in platform device */
platform_set_drvdata(pdev, vpbe_dev);
mutex_init(&vpbe_dev->lock);
return 0;
}
static int vpbe_remove(struct platform_device *device)
{
struct vpbe_device *vpbe_dev = platform_get_drvdata(device);
kfree(vpbe_dev);
return 0;
}
static struct platform_driver vpbe_driver = {
.driver = {
.name = "vpbe_controller",
},
.probe = vpbe_probe,
.remove = vpbe_remove,
};
module_platform_driver(vpbe_driver);