mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-15 23:25:07 +00:00
8aa1be45f9
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
271 lines
7.1 KiB
C
271 lines
7.1 KiB
C
/*
|
|
* i.MX drm driver - parallel display implementation
|
|
*
|
|
* Copyright (C) 2012 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.
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston,
|
|
* MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <linux/videodev2.h>
|
|
#include <linux/pinctrl/consumer.h>
|
|
|
|
#include "imx-drm.h"
|
|
|
|
#define con_to_imxpd(x) container_of(x, struct imx_parallel_display, connector)
|
|
#define enc_to_imxpd(x) container_of(x, struct imx_parallel_display, encoder)
|
|
|
|
struct imx_parallel_display {
|
|
struct drm_connector connector;
|
|
struct imx_drm_connector *imx_drm_connector;
|
|
struct drm_encoder encoder;
|
|
struct imx_drm_encoder *imx_drm_encoder;
|
|
struct device *dev;
|
|
void *edid;
|
|
int edid_len;
|
|
u32 interface_pix_fmt;
|
|
int mode_valid;
|
|
struct drm_display_mode mode;
|
|
};
|
|
|
|
static enum drm_connector_status imx_pd_connector_detect(
|
|
struct drm_connector *connector, bool force)
|
|
{
|
|
return connector_status_connected;
|
|
}
|
|
|
|
static void imx_pd_connector_destroy(struct drm_connector *connector)
|
|
{
|
|
/* do not free here */
|
|
}
|
|
|
|
static int imx_pd_connector_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct imx_parallel_display *imxpd = con_to_imxpd(connector);
|
|
int num_modes = 0;
|
|
|
|
if (imxpd->edid) {
|
|
drm_mode_connector_update_edid_property(connector, imxpd->edid);
|
|
num_modes = drm_add_edid_modes(connector, imxpd->edid);
|
|
}
|
|
|
|
if (imxpd->mode_valid) {
|
|
struct drm_display_mode *mode = drm_mode_create(connector->dev);
|
|
drm_mode_copy(mode, &imxpd->mode);
|
|
mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
|
|
drm_mode_probed_add(connector, mode);
|
|
num_modes++;
|
|
}
|
|
|
|
return num_modes;
|
|
}
|
|
|
|
static int imx_pd_connector_mode_valid(struct drm_connector *connector,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static struct drm_encoder *imx_pd_connector_best_encoder(
|
|
struct drm_connector *connector)
|
|
{
|
|
struct imx_parallel_display *imxpd = con_to_imxpd(connector);
|
|
|
|
return &imxpd->encoder;
|
|
}
|
|
|
|
static void imx_pd_encoder_dpms(struct drm_encoder *encoder, int mode)
|
|
{
|
|
}
|
|
|
|
static bool imx_pd_encoder_mode_fixup(struct drm_encoder *encoder,
|
|
const struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void imx_pd_encoder_prepare(struct drm_encoder *encoder)
|
|
{
|
|
struct imx_parallel_display *imxpd = enc_to_imxpd(encoder);
|
|
|
|
imx_drm_crtc_panel_format(encoder->crtc, DRM_MODE_ENCODER_NONE,
|
|
imxpd->interface_pix_fmt);
|
|
}
|
|
|
|
static void imx_pd_encoder_commit(struct drm_encoder *encoder)
|
|
{
|
|
}
|
|
|
|
static void imx_pd_encoder_mode_set(struct drm_encoder *encoder,
|
|
struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
}
|
|
|
|
static void imx_pd_encoder_disable(struct drm_encoder *encoder)
|
|
{
|
|
}
|
|
|
|
static void imx_pd_encoder_destroy(struct drm_encoder *encoder)
|
|
{
|
|
/* do not free here */
|
|
}
|
|
|
|
static struct drm_connector_funcs imx_pd_connector_funcs = {
|
|
.dpms = drm_helper_connector_dpms,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.detect = imx_pd_connector_detect,
|
|
.destroy = imx_pd_connector_destroy,
|
|
};
|
|
|
|
static struct drm_connector_helper_funcs imx_pd_connector_helper_funcs = {
|
|
.get_modes = imx_pd_connector_get_modes,
|
|
.best_encoder = imx_pd_connector_best_encoder,
|
|
.mode_valid = imx_pd_connector_mode_valid,
|
|
};
|
|
|
|
static struct drm_encoder_funcs imx_pd_encoder_funcs = {
|
|
.destroy = imx_pd_encoder_destroy,
|
|
};
|
|
|
|
static struct drm_encoder_helper_funcs imx_pd_encoder_helper_funcs = {
|
|
.dpms = imx_pd_encoder_dpms,
|
|
.mode_fixup = imx_pd_encoder_mode_fixup,
|
|
.prepare = imx_pd_encoder_prepare,
|
|
.commit = imx_pd_encoder_commit,
|
|
.mode_set = imx_pd_encoder_mode_set,
|
|
.disable = imx_pd_encoder_disable,
|
|
};
|
|
|
|
static int imx_pd_register(struct imx_parallel_display *imxpd)
|
|
{
|
|
int ret;
|
|
|
|
drm_mode_connector_attach_encoder(&imxpd->connector, &imxpd->encoder);
|
|
|
|
imxpd->connector.funcs = &imx_pd_connector_funcs;
|
|
imxpd->encoder.funcs = &imx_pd_encoder_funcs;
|
|
|
|
imxpd->encoder.encoder_type = DRM_MODE_ENCODER_NONE;
|
|
imxpd->connector.connector_type = DRM_MODE_CONNECTOR_VGA;
|
|
|
|
drm_encoder_helper_add(&imxpd->encoder, &imx_pd_encoder_helper_funcs);
|
|
ret = imx_drm_add_encoder(&imxpd->encoder, &imxpd->imx_drm_encoder,
|
|
THIS_MODULE);
|
|
if (ret) {
|
|
dev_err(imxpd->dev, "adding encoder failed with %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
drm_connector_helper_add(&imxpd->connector,
|
|
&imx_pd_connector_helper_funcs);
|
|
|
|
ret = imx_drm_add_connector(&imxpd->connector,
|
|
&imxpd->imx_drm_connector, THIS_MODULE);
|
|
if (ret) {
|
|
imx_drm_remove_encoder(imxpd->imx_drm_encoder);
|
|
dev_err(imxpd->dev, "adding connector failed with %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
imxpd->connector.encoder = &imxpd->encoder;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int imx_pd_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *np = pdev->dev.of_node;
|
|
const u8 *edidp;
|
|
struct imx_parallel_display *imxpd;
|
|
int ret;
|
|
const char *fmt;
|
|
struct pinctrl *pinctrl;
|
|
|
|
imxpd = devm_kzalloc(&pdev->dev, sizeof(*imxpd), GFP_KERNEL);
|
|
if (!imxpd)
|
|
return -ENOMEM;
|
|
|
|
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
|
|
if (IS_ERR(pinctrl)) {
|
|
ret = PTR_ERR(pinctrl);
|
|
dev_warn(&pdev->dev, "pinctrl_get_select_default failed with %d",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
edidp = of_get_property(np, "edid", &imxpd->edid_len);
|
|
if (edidp)
|
|
imxpd->edid = kmemdup(edidp, imxpd->edid_len, GFP_KERNEL);
|
|
|
|
ret = of_property_read_string(np, "interface-pix-fmt", &fmt);
|
|
if (!ret) {
|
|
if (!strcmp(fmt, "rgb24"))
|
|
imxpd->interface_pix_fmt = V4L2_PIX_FMT_RGB24;
|
|
else if (!strcmp(fmt, "rgb565"))
|
|
imxpd->interface_pix_fmt = V4L2_PIX_FMT_RGB565;
|
|
}
|
|
|
|
imxpd->dev = &pdev->dev;
|
|
|
|
ret = imx_pd_register(imxpd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = imx_drm_encoder_add_possible_crtcs(imxpd->imx_drm_encoder, np);
|
|
|
|
platform_set_drvdata(pdev, imxpd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int imx_pd_remove(struct platform_device *pdev)
|
|
{
|
|
struct imx_parallel_display *imxpd = platform_get_drvdata(pdev);
|
|
struct drm_connector *connector = &imxpd->connector;
|
|
struct drm_encoder *encoder = &imxpd->encoder;
|
|
|
|
drm_mode_connector_detach_encoder(connector, encoder);
|
|
|
|
imx_drm_remove_connector(imxpd->imx_drm_connector);
|
|
imx_drm_remove_encoder(imxpd->imx_drm_encoder);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id imx_pd_dt_ids[] = {
|
|
{ .compatible = "fsl,imx-parallel-display", },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static struct platform_driver imx_pd_driver = {
|
|
.probe = imx_pd_probe,
|
|
.remove = imx_pd_remove,
|
|
.driver = {
|
|
.of_match_table = imx_pd_dt_ids,
|
|
.name = "imx-parallel-display",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(imx_pd_driver);
|
|
|
|
MODULE_DESCRIPTION("i.MX parallel display driver");
|
|
MODULE_AUTHOR("Sascha Hauer, Pengutronix");
|
|
MODULE_LICENSE("GPL");
|