![Philipp Zabel](/assets/img/avatar_default.png)
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
890 lines
20 KiB
C
890 lines
20 KiB
C
/*
|
|
* Freescale i.MX drm driver
|
|
*
|
|
* Copyright (C) 2011 Sascha Hauer, Pengutronix
|
|
*
|
|
* 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; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/platform_device.h>
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/module.h>
|
|
#include <drm/drm_gem_cma_helper.h>
|
|
#include <drm/drm_fb_cma_helper.h>
|
|
|
|
#include "imx-drm.h"
|
|
|
|
#define MAX_CRTC 4
|
|
|
|
struct crtc_cookie {
|
|
void *cookie;
|
|
int id;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct imx_drm_device {
|
|
struct drm_device *drm;
|
|
struct device *dev;
|
|
struct list_head crtc_list;
|
|
struct list_head encoder_list;
|
|
struct list_head connector_list;
|
|
struct mutex mutex;
|
|
int references;
|
|
int pipes;
|
|
struct drm_fbdev_cma *fbhelper;
|
|
};
|
|
|
|
struct imx_drm_crtc {
|
|
struct drm_crtc *crtc;
|
|
struct list_head list;
|
|
struct imx_drm_device *imxdrm;
|
|
int pipe;
|
|
struct imx_drm_crtc_helper_funcs imx_drm_helper_funcs;
|
|
struct module *owner;
|
|
struct crtc_cookie cookie;
|
|
};
|
|
|
|
struct imx_drm_encoder {
|
|
struct drm_encoder *encoder;
|
|
struct list_head list;
|
|
struct module *owner;
|
|
struct list_head possible_crtcs;
|
|
};
|
|
|
|
struct imx_drm_connector {
|
|
struct drm_connector *connector;
|
|
struct list_head list;
|
|
struct module *owner;
|
|
};
|
|
|
|
static int imx_drm_driver_firstopen(struct drm_device *drm)
|
|
{
|
|
if (!imx_drm_device_get())
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void imx_drm_driver_lastclose(struct drm_device *drm)
|
|
{
|
|
struct imx_drm_device *imxdrm = drm->dev_private;
|
|
|
|
if (imxdrm->fbhelper)
|
|
drm_fbdev_cma_restore_mode(imxdrm->fbhelper);
|
|
|
|
imx_drm_device_put();
|
|
}
|
|
|
|
static int imx_drm_driver_unload(struct drm_device *drm)
|
|
{
|
|
struct imx_drm_device *imxdrm = drm->dev_private;
|
|
|
|
drm_mode_config_cleanup(imxdrm->drm);
|
|
drm_kms_helper_poll_fini(imxdrm->drm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We don't care at all for crtc numbers, but the core expects the
|
|
* crtcs to be numbered
|
|
*/
|
|
static struct imx_drm_crtc *imx_drm_crtc_by_num(struct imx_drm_device *imxdrm,
|
|
int num)
|
|
{
|
|
struct imx_drm_crtc *imx_drm_crtc;
|
|
|
|
list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list)
|
|
if (imx_drm_crtc->pipe == num)
|
|
return imx_drm_crtc;
|
|
return NULL;
|
|
}
|
|
|
|
int imx_drm_crtc_panel_format_pins(struct drm_crtc *crtc, u32 encoder_type,
|
|
u32 interface_pix_fmt, int hsync_pin, int vsync_pin)
|
|
{
|
|
struct imx_drm_device *imxdrm = crtc->dev->dev_private;
|
|
struct imx_drm_crtc *imx_crtc;
|
|
struct imx_drm_crtc_helper_funcs *helper;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list)
|
|
if (imx_crtc->crtc == crtc)
|
|
goto found;
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return -EINVAL;
|
|
found:
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
helper = &imx_crtc->imx_drm_helper_funcs;
|
|
if (helper->set_interface_pix_fmt)
|
|
return helper->set_interface_pix_fmt(crtc,
|
|
encoder_type, interface_pix_fmt,
|
|
hsync_pin, vsync_pin);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format_pins);
|
|
|
|
int imx_drm_crtc_panel_format(struct drm_crtc *crtc, u32 encoder_type,
|
|
u32 interface_pix_fmt)
|
|
{
|
|
return imx_drm_crtc_panel_format_pins(crtc, encoder_type,
|
|
interface_pix_fmt, 2, 3);
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format);
|
|
|
|
int imx_drm_crtc_vblank_get(struct imx_drm_crtc *imx_drm_crtc)
|
|
{
|
|
return drm_vblank_get(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe);
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get);
|
|
|
|
void imx_drm_crtc_vblank_put(struct imx_drm_crtc *imx_drm_crtc)
|
|
{
|
|
drm_vblank_put(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe);
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put);
|
|
|
|
void imx_drm_handle_vblank(struct imx_drm_crtc *imx_drm_crtc)
|
|
{
|
|
drm_handle_vblank(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe);
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_handle_vblank);
|
|
|
|
static int imx_drm_enable_vblank(struct drm_device *drm, int crtc)
|
|
{
|
|
struct imx_drm_device *imxdrm = drm->dev_private;
|
|
struct imx_drm_crtc *imx_drm_crtc;
|
|
int ret;
|
|
|
|
imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc);
|
|
if (!imx_drm_crtc)
|
|
return -EINVAL;
|
|
|
|
if (!imx_drm_crtc->imx_drm_helper_funcs.enable_vblank)
|
|
return -ENOSYS;
|
|
|
|
ret = imx_drm_crtc->imx_drm_helper_funcs.enable_vblank(
|
|
imx_drm_crtc->crtc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void imx_drm_disable_vblank(struct drm_device *drm, int crtc)
|
|
{
|
|
struct imx_drm_device *imxdrm = drm->dev_private;
|
|
struct imx_drm_crtc *imx_drm_crtc;
|
|
|
|
imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc);
|
|
if (!imx_drm_crtc)
|
|
return;
|
|
|
|
if (!imx_drm_crtc->imx_drm_helper_funcs.disable_vblank)
|
|
return;
|
|
|
|
imx_drm_crtc->imx_drm_helper_funcs.disable_vblank(imx_drm_crtc->crtc);
|
|
}
|
|
|
|
static const struct file_operations imx_drm_driver_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = drm_open,
|
|
.release = drm_release,
|
|
.unlocked_ioctl = drm_ioctl,
|
|
.mmap = drm_gem_cma_mmap,
|
|
.poll = drm_poll,
|
|
.fasync = drm_fasync,
|
|
.read = drm_read,
|
|
.llseek = noop_llseek,
|
|
};
|
|
|
|
static struct imx_drm_device *imx_drm_device;
|
|
|
|
static struct imx_drm_device *__imx_drm_device(void)
|
|
{
|
|
return imx_drm_device;
|
|
}
|
|
|
|
struct drm_device *imx_drm_device_get(void)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct imx_drm_encoder *enc;
|
|
struct imx_drm_connector *con;
|
|
struct imx_drm_crtc *crtc;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
list_for_each_entry(enc, &imxdrm->encoder_list, list) {
|
|
if (!try_module_get(enc->owner)) {
|
|
dev_err(imxdrm->dev, "could not get module %s\n",
|
|
module_name(enc->owner));
|
|
goto unwind_enc;
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(con, &imxdrm->connector_list, list) {
|
|
if (!try_module_get(con->owner)) {
|
|
dev_err(imxdrm->dev, "could not get module %s\n",
|
|
module_name(con->owner));
|
|
goto unwind_con;
|
|
}
|
|
}
|
|
|
|
list_for_each_entry(crtc, &imxdrm->crtc_list, list) {
|
|
if (!try_module_get(crtc->owner)) {
|
|
dev_err(imxdrm->dev, "could not get module %s\n",
|
|
module_name(crtc->owner));
|
|
goto unwind_crtc;
|
|
}
|
|
}
|
|
|
|
imxdrm->references++;
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return imxdrm->drm;
|
|
|
|
unwind_crtc:
|
|
list_for_each_entry_continue_reverse(crtc, &imxdrm->crtc_list, list)
|
|
module_put(crtc->owner);
|
|
unwind_con:
|
|
list_for_each_entry_continue_reverse(con, &imxdrm->connector_list, list)
|
|
module_put(con->owner);
|
|
unwind_enc:
|
|
list_for_each_entry_continue_reverse(enc, &imxdrm->encoder_list, list)
|
|
module_put(enc->owner);
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_device_get);
|
|
|
|
void imx_drm_device_put(void)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct imx_drm_encoder *enc;
|
|
struct imx_drm_connector *con;
|
|
struct imx_drm_crtc *crtc;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
list_for_each_entry(crtc, &imxdrm->crtc_list, list)
|
|
module_put(crtc->owner);
|
|
|
|
list_for_each_entry(con, &imxdrm->connector_list, list)
|
|
module_put(con->owner);
|
|
|
|
list_for_each_entry(enc, &imxdrm->encoder_list, list)
|
|
module_put(enc->owner);
|
|
|
|
imxdrm->references--;
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_device_put);
|
|
|
|
static int drm_mode_group_reinit(struct drm_device *dev)
|
|
{
|
|
struct drm_mode_group *group = &dev->primary->mode_group;
|
|
uint32_t *id_list = group->id_list;
|
|
int ret;
|
|
|
|
ret = drm_mode_group_init_legacy_group(dev, group);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
kfree(id_list);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* register an encoder to the drm core
|
|
*/
|
|
static int imx_drm_encoder_register(struct imx_drm_encoder *imx_drm_encoder)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
|
|
INIT_LIST_HEAD(&imx_drm_encoder->possible_crtcs);
|
|
|
|
drm_encoder_init(imxdrm->drm, imx_drm_encoder->encoder,
|
|
imx_drm_encoder->encoder->funcs,
|
|
imx_drm_encoder->encoder->encoder_type);
|
|
|
|
drm_mode_group_reinit(imxdrm->drm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* unregister an encoder from the drm core
|
|
*/
|
|
static void imx_drm_encoder_unregister(struct imx_drm_encoder
|
|
*imx_drm_encoder)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
|
|
drm_encoder_cleanup(imx_drm_encoder->encoder);
|
|
|
|
drm_mode_group_reinit(imxdrm->drm);
|
|
}
|
|
|
|
/*
|
|
* register a connector to the drm core
|
|
*/
|
|
static int imx_drm_connector_register(
|
|
struct imx_drm_connector *imx_drm_connector)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
|
|
drm_connector_init(imxdrm->drm, imx_drm_connector->connector,
|
|
imx_drm_connector->connector->funcs,
|
|
imx_drm_connector->connector->connector_type);
|
|
drm_mode_group_reinit(imxdrm->drm);
|
|
|
|
return drm_sysfs_connector_add(imx_drm_connector->connector);
|
|
}
|
|
|
|
/*
|
|
* unregister a connector from the drm core
|
|
*/
|
|
static void imx_drm_connector_unregister(
|
|
struct imx_drm_connector *imx_drm_connector)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
|
|
drm_sysfs_connector_remove(imx_drm_connector->connector);
|
|
drm_connector_cleanup(imx_drm_connector->connector);
|
|
|
|
drm_mode_group_reinit(imxdrm->drm);
|
|
}
|
|
|
|
/*
|
|
* register a crtc to the drm core
|
|
*/
|
|
static int imx_drm_crtc_register(struct imx_drm_crtc *imx_drm_crtc)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
int ret;
|
|
|
|
drm_crtc_init(imxdrm->drm, imx_drm_crtc->crtc,
|
|
imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs);
|
|
ret = drm_mode_crtc_set_gamma_size(imx_drm_crtc->crtc, 256);
|
|
if (ret)
|
|
return ret;
|
|
|
|
drm_crtc_helper_add(imx_drm_crtc->crtc,
|
|
imx_drm_crtc->imx_drm_helper_funcs.crtc_helper_funcs);
|
|
|
|
drm_mode_group_reinit(imxdrm->drm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Called by the CRTC driver when all CRTCs are registered. This
|
|
* puts all the pieces together and initializes the driver.
|
|
* Once this is called no more CRTCs can be registered since
|
|
* the drm core has hardcoded the number of crtcs in several
|
|
* places.
|
|
*/
|
|
static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
int ret;
|
|
|
|
imxdrm->drm = drm;
|
|
|
|
drm->dev_private = imxdrm;
|
|
|
|
/*
|
|
* enable drm irq mode.
|
|
* - with irq_enabled = 1, we can use the vblank feature.
|
|
*
|
|
* P.S. note that we wouldn't use drm irq handler but
|
|
* just specific driver own one instead because
|
|
* drm framework supports only one irq handler and
|
|
* drivers can well take care of their interrupts
|
|
*/
|
|
drm->irq_enabled = 1;
|
|
|
|
drm_mode_config_init(drm);
|
|
imx_drm_mode_config_init(drm);
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
drm_kms_helper_poll_init(imxdrm->drm);
|
|
|
|
/* setup the grouping for the legacy output */
|
|
ret = drm_mode_group_init_legacy_group(imxdrm->drm,
|
|
&imxdrm->drm->primary->mode_group);
|
|
if (ret)
|
|
goto err_init;
|
|
|
|
ret = drm_vblank_init(imxdrm->drm, MAX_CRTC);
|
|
if (ret)
|
|
goto err_init;
|
|
|
|
/*
|
|
* with vblank_disable_allowed = 1, vblank interrupt will be disabled
|
|
* by drm timer once a current process gives up ownership of
|
|
* vblank event.(after drm_vblank_put function is called)
|
|
*/
|
|
imxdrm->drm->vblank_disable_allowed = 1;
|
|
|
|
ret = 0;
|
|
|
|
err_init:
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void imx_drm_update_possible_crtcs(void)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct imx_drm_crtc *imx_drm_crtc;
|
|
struct imx_drm_encoder *enc;
|
|
struct crtc_cookie *cookie;
|
|
|
|
list_for_each_entry(enc, &imxdrm->encoder_list, list) {
|
|
u32 possible_crtcs = 0;
|
|
|
|
list_for_each_entry(cookie, &enc->possible_crtcs, list) {
|
|
list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) {
|
|
if (imx_drm_crtc->cookie.cookie == cookie->cookie &&
|
|
imx_drm_crtc->cookie.id == cookie->id) {
|
|
possible_crtcs |= 1 << imx_drm_crtc->pipe;
|
|
}
|
|
}
|
|
}
|
|
enc->encoder->possible_crtcs = possible_crtcs;
|
|
enc->encoder->possible_clones = possible_crtcs;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* imx_drm_add_crtc - add a new crtc
|
|
*
|
|
* The return value if !NULL is a cookie for the caller to pass to
|
|
* imx_drm_remove_crtc later.
|
|
*/
|
|
int imx_drm_add_crtc(struct drm_crtc *crtc,
|
|
struct imx_drm_crtc **new_crtc,
|
|
const struct imx_drm_crtc_helper_funcs *imx_drm_helper_funcs,
|
|
struct module *owner, void *cookie, int id)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct imx_drm_crtc *imx_drm_crtc;
|
|
int ret;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
if (imxdrm->references) {
|
|
ret = -EBUSY;
|
|
goto err_busy;
|
|
}
|
|
|
|
imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL);
|
|
if (!imx_drm_crtc) {
|
|
ret = -ENOMEM;
|
|
goto err_alloc;
|
|
}
|
|
|
|
imx_drm_crtc->imx_drm_helper_funcs = *imx_drm_helper_funcs;
|
|
imx_drm_crtc->pipe = imxdrm->pipes++;
|
|
imx_drm_crtc->cookie.cookie = cookie;
|
|
imx_drm_crtc->cookie.id = id;
|
|
|
|
imx_drm_crtc->crtc = crtc;
|
|
imx_drm_crtc->imxdrm = imxdrm;
|
|
|
|
imx_drm_crtc->owner = owner;
|
|
|
|
list_add_tail(&imx_drm_crtc->list, &imxdrm->crtc_list);
|
|
|
|
*new_crtc = imx_drm_crtc;
|
|
|
|
ret = imx_drm_crtc_register(imx_drm_crtc);
|
|
if (ret)
|
|
goto err_register;
|
|
|
|
imx_drm_update_possible_crtcs();
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return 0;
|
|
|
|
err_register:
|
|
kfree(imx_drm_crtc);
|
|
err_alloc:
|
|
err_busy:
|
|
mutex_unlock(&imxdrm->mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_add_crtc);
|
|
|
|
/*
|
|
* imx_drm_remove_crtc - remove a crtc
|
|
*/
|
|
int imx_drm_remove_crtc(struct imx_drm_crtc *imx_drm_crtc)
|
|
{
|
|
struct imx_drm_device *imxdrm = imx_drm_crtc->imxdrm;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
drm_crtc_cleanup(imx_drm_crtc->crtc);
|
|
|
|
list_del(&imx_drm_crtc->list);
|
|
|
|
drm_mode_group_reinit(imxdrm->drm);
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
kfree(imx_drm_crtc);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_remove_crtc);
|
|
|
|
/*
|
|
* imx_drm_add_encoder - add a new encoder
|
|
*/
|
|
int imx_drm_add_encoder(struct drm_encoder *encoder,
|
|
struct imx_drm_encoder **newenc, struct module *owner)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct imx_drm_encoder *imx_drm_encoder;
|
|
int ret;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
if (imxdrm->references) {
|
|
ret = -EBUSY;
|
|
goto err_busy;
|
|
}
|
|
|
|
imx_drm_encoder = kzalloc(sizeof(*imx_drm_encoder), GFP_KERNEL);
|
|
if (!imx_drm_encoder) {
|
|
ret = -ENOMEM;
|
|
goto err_alloc;
|
|
}
|
|
|
|
imx_drm_encoder->encoder = encoder;
|
|
imx_drm_encoder->owner = owner;
|
|
|
|
ret = imx_drm_encoder_register(imx_drm_encoder);
|
|
if (ret) {
|
|
ret = -ENOMEM;
|
|
goto err_register;
|
|
}
|
|
|
|
list_add_tail(&imx_drm_encoder->list, &imxdrm->encoder_list);
|
|
|
|
*newenc = imx_drm_encoder;
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return 0;
|
|
|
|
err_register:
|
|
kfree(imx_drm_encoder);
|
|
err_alloc:
|
|
err_busy:
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_add_encoder);
|
|
|
|
int imx_drm_encoder_add_possible_crtcs(
|
|
struct imx_drm_encoder *imx_drm_encoder,
|
|
struct device_node *np)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct of_phandle_args args;
|
|
struct crtc_cookie *c;
|
|
int ret = 0;
|
|
int i;
|
|
|
|
if (!list_empty(&imx_drm_encoder->possible_crtcs))
|
|
return -EBUSY;
|
|
|
|
for (i = 0; !ret; i++) {
|
|
ret = of_parse_phandle_with_args(np, "crtcs",
|
|
"#crtc-cells", i, &args);
|
|
if (ret < 0)
|
|
break;
|
|
|
|
c = kzalloc(sizeof(*c), GFP_KERNEL);
|
|
if (!c) {
|
|
of_node_put(args.np);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
c->cookie = args.np;
|
|
c->id = args.args_count > 0 ? args.args[0] : 0;
|
|
|
|
of_node_put(args.np);
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
list_add_tail(&c->list, &imx_drm_encoder->possible_crtcs);
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
}
|
|
|
|
imx_drm_update_possible_crtcs();
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs);
|
|
|
|
int imx_drm_encoder_get_mux_id(struct imx_drm_encoder *imx_drm_encoder,
|
|
struct drm_crtc *crtc)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct imx_drm_crtc *imx_crtc;
|
|
int i = 0;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) {
|
|
if (imx_crtc->crtc == crtc)
|
|
goto found;
|
|
i++;
|
|
}
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return -EINVAL;
|
|
found:
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return i;
|
|
}
|
|
|
|
/*
|
|
* imx_drm_remove_encoder - remove an encoder
|
|
*/
|
|
int imx_drm_remove_encoder(struct imx_drm_encoder *imx_drm_encoder)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct crtc_cookie *c, *tmp;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
imx_drm_encoder_unregister(imx_drm_encoder);
|
|
|
|
list_del(&imx_drm_encoder->list);
|
|
|
|
list_for_each_entry_safe(c, tmp, &imx_drm_encoder->possible_crtcs,
|
|
list)
|
|
kfree(c);
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
kfree(imx_drm_encoder);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_remove_encoder);
|
|
|
|
/*
|
|
* imx_drm_add_connector - add a connector
|
|
*/
|
|
int imx_drm_add_connector(struct drm_connector *connector,
|
|
struct imx_drm_connector **new_con,
|
|
struct module *owner)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
struct imx_drm_connector *imx_drm_connector;
|
|
int ret;
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
if (imxdrm->references) {
|
|
ret = -EBUSY;
|
|
goto err_busy;
|
|
}
|
|
|
|
imx_drm_connector = kzalloc(sizeof(*imx_drm_connector), GFP_KERNEL);
|
|
if (!imx_drm_connector) {
|
|
ret = -ENOMEM;
|
|
goto err_alloc;
|
|
}
|
|
|
|
imx_drm_connector->connector = connector;
|
|
imx_drm_connector->owner = owner;
|
|
|
|
ret = imx_drm_connector_register(imx_drm_connector);
|
|
if (ret)
|
|
goto err_register;
|
|
|
|
list_add_tail(&imx_drm_connector->list, &imxdrm->connector_list);
|
|
|
|
*new_con = imx_drm_connector;
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return 0;
|
|
|
|
err_register:
|
|
kfree(imx_drm_connector);
|
|
err_alloc:
|
|
err_busy:
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_add_connector);
|
|
|
|
void imx_drm_fb_helper_set(struct drm_fbdev_cma *fbdev_helper)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
|
|
imxdrm->fbhelper = fbdev_helper;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set);
|
|
|
|
/*
|
|
* imx_drm_remove_connector - remove a connector
|
|
*/
|
|
int imx_drm_remove_connector(struct imx_drm_connector *imx_drm_connector)
|
|
{
|
|
struct imx_drm_device *imxdrm = __imx_drm_device();
|
|
|
|
mutex_lock(&imxdrm->mutex);
|
|
|
|
imx_drm_connector_unregister(imx_drm_connector);
|
|
|
|
list_del(&imx_drm_connector->list);
|
|
|
|
mutex_unlock(&imxdrm->mutex);
|
|
|
|
kfree(imx_drm_connector);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_drm_remove_connector);
|
|
|
|
static struct drm_ioctl_desc imx_drm_ioctls[] = {
|
|
/* none so far */
|
|
};
|
|
|
|
static struct drm_driver imx_drm_driver = {
|
|
.driver_features = DRIVER_MODESET | DRIVER_GEM,
|
|
.load = imx_drm_driver_load,
|
|
.unload = imx_drm_driver_unload,
|
|
.firstopen = imx_drm_driver_firstopen,
|
|
.lastclose = imx_drm_driver_lastclose,
|
|
.gem_free_object = drm_gem_cma_free_object,
|
|
.gem_vm_ops = &drm_gem_cma_vm_ops,
|
|
.dumb_create = drm_gem_cma_dumb_create,
|
|
.dumb_map_offset = drm_gem_cma_dumb_map_offset,
|
|
.dumb_destroy = drm_gem_cma_dumb_destroy,
|
|
|
|
.get_vblank_counter = drm_vblank_count,
|
|
.enable_vblank = imx_drm_enable_vblank,
|
|
.disable_vblank = imx_drm_disable_vblank,
|
|
.ioctls = imx_drm_ioctls,
|
|
.num_ioctls = ARRAY_SIZE(imx_drm_ioctls),
|
|
.fops = &imx_drm_driver_fops,
|
|
.name = "imx-drm",
|
|
.desc = "i.MX DRM graphics",
|
|
.date = "20120507",
|
|
.major = 1,
|
|
.minor = 0,
|
|
.patchlevel = 0,
|
|
};
|
|
|
|
static int imx_drm_platform_probe(struct platform_device *pdev)
|
|
{
|
|
imx_drm_device->dev = &pdev->dev;
|
|
|
|
return drm_platform_init(&imx_drm_driver, pdev);
|
|
}
|
|
|
|
static int imx_drm_platform_remove(struct platform_device *pdev)
|
|
{
|
|
drm_platform_exit(&imx_drm_driver, pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver imx_drm_pdrv = {
|
|
.probe = imx_drm_platform_probe,
|
|
.remove = imx_drm_platform_remove,
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "imx-drm",
|
|
},
|
|
};
|
|
|
|
static struct platform_device *imx_drm_pdev;
|
|
|
|
static int __init imx_drm_init(void)
|
|
{
|
|
int ret;
|
|
|
|
imx_drm_device = kzalloc(sizeof(*imx_drm_device), GFP_KERNEL);
|
|
if (!imx_drm_device)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&imx_drm_device->mutex);
|
|
INIT_LIST_HEAD(&imx_drm_device->crtc_list);
|
|
INIT_LIST_HEAD(&imx_drm_device->connector_list);
|
|
INIT_LIST_HEAD(&imx_drm_device->encoder_list);
|
|
|
|
imx_drm_pdev = platform_device_register_simple("imx-drm", -1, NULL, 0);
|
|
if (!imx_drm_pdev) {
|
|
ret = -EINVAL;
|
|
goto err_pdev;
|
|
}
|
|
|
|
imx_drm_pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32),
|
|
|
|
ret = platform_driver_register(&imx_drm_pdrv);
|
|
if (ret)
|
|
goto err_pdrv;
|
|
|
|
return 0;
|
|
|
|
err_pdrv:
|
|
platform_device_unregister(imx_drm_pdev);
|
|
err_pdev:
|
|
kfree(imx_drm_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit imx_drm_exit(void)
|
|
{
|
|
platform_device_unregister(imx_drm_pdev);
|
|
platform_driver_unregister(&imx_drm_pdrv);
|
|
|
|
kfree(imx_drm_device);
|
|
}
|
|
|
|
module_init(imx_drm_init);
|
|
module_exit(imx_drm_exit);
|
|
|
|
MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
|
|
MODULE_DESCRIPTION("i.MX drm driver core");
|
|
MODULE_LICENSE("GPL");
|