321 lines
8.0 KiB
C
321 lines
8.0 KiB
C
/*
|
|
* rcar_du_drv.c -- R-Car Display Unit DRM driver
|
|
*
|
|
* Copyright (C) 2013 Renesas Corporation
|
|
*
|
|
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/io.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <drm/drm_fb_cma_helper.h>
|
|
#include <drm/drm_gem_cma_helper.h>
|
|
|
|
#include "rcar_du_crtc.h"
|
|
#include "rcar_du_drv.h"
|
|
#include "rcar_du_kms.h"
|
|
#include "rcar_du_regs.h"
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* DRM operations
|
|
*/
|
|
|
|
static int rcar_du_unload(struct drm_device *dev)
|
|
{
|
|
struct rcar_du_device *rcdu = dev->dev_private;
|
|
|
|
if (rcdu->fbdev)
|
|
drm_fbdev_cma_fini(rcdu->fbdev);
|
|
|
|
drm_kms_helper_poll_fini(dev);
|
|
drm_mode_config_cleanup(dev);
|
|
drm_vblank_cleanup(dev);
|
|
|
|
dev->irq_enabled = 0;
|
|
dev->dev_private = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rcar_du_load(struct drm_device *dev, unsigned long flags)
|
|
{
|
|
struct platform_device *pdev = dev->platformdev;
|
|
struct rcar_du_platform_data *pdata = pdev->dev.platform_data;
|
|
struct rcar_du_device *rcdu;
|
|
struct resource *mem;
|
|
int ret;
|
|
|
|
if (pdata == NULL) {
|
|
dev_err(dev->dev, "no platform data\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
|
|
if (rcdu == NULL) {
|
|
dev_err(dev->dev, "failed to allocate private data\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
rcdu->dev = &pdev->dev;
|
|
rcdu->pdata = pdata;
|
|
rcdu->info = (struct rcar_du_device_info *)pdev->id_entry->driver_data;
|
|
rcdu->ddev = dev;
|
|
dev->dev_private = rcdu;
|
|
|
|
/* I/O resources */
|
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem);
|
|
if (IS_ERR(rcdu->mmio))
|
|
return PTR_ERR(rcdu->mmio);
|
|
|
|
/* DRM/KMS objects */
|
|
ret = rcar_du_modeset_init(rcdu);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "failed to initialize DRM/KMS\n");
|
|
goto done;
|
|
}
|
|
|
|
/* vblank handling */
|
|
ret = drm_vblank_init(dev, (1 << rcdu->num_crtcs) - 1);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "failed to initialize vblank\n");
|
|
goto done;
|
|
}
|
|
|
|
dev->irq_enabled = 1;
|
|
|
|
platform_set_drvdata(pdev, rcdu);
|
|
|
|
done:
|
|
if (ret)
|
|
rcar_du_unload(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void rcar_du_preclose(struct drm_device *dev, struct drm_file *file)
|
|
{
|
|
struct rcar_du_device *rcdu = dev->dev_private;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < rcdu->num_crtcs; ++i)
|
|
rcar_du_crtc_cancel_page_flip(&rcdu->crtcs[i], file);
|
|
}
|
|
|
|
static void rcar_du_lastclose(struct drm_device *dev)
|
|
{
|
|
struct rcar_du_device *rcdu = dev->dev_private;
|
|
|
|
drm_fbdev_cma_restore_mode(rcdu->fbdev);
|
|
}
|
|
|
|
static int rcar_du_enable_vblank(struct drm_device *dev, int crtc)
|
|
{
|
|
struct rcar_du_device *rcdu = dev->dev_private;
|
|
|
|
rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void rcar_du_disable_vblank(struct drm_device *dev, int crtc)
|
|
{
|
|
struct rcar_du_device *rcdu = dev->dev_private;
|
|
|
|
rcar_du_crtc_enable_vblank(&rcdu->crtcs[crtc], false);
|
|
}
|
|
|
|
static const struct file_operations rcar_du_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = drm_open,
|
|
.release = drm_release,
|
|
.unlocked_ioctl = drm_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = drm_compat_ioctl,
|
|
#endif
|
|
.poll = drm_poll,
|
|
.read = drm_read,
|
|
.llseek = no_llseek,
|
|
.mmap = drm_gem_cma_mmap,
|
|
};
|
|
|
|
static struct drm_driver rcar_du_driver = {
|
|
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME,
|
|
.load = rcar_du_load,
|
|
.unload = rcar_du_unload,
|
|
.preclose = rcar_du_preclose,
|
|
.lastclose = rcar_du_lastclose,
|
|
.get_vblank_counter = drm_vblank_count,
|
|
.enable_vblank = rcar_du_enable_vblank,
|
|
.disable_vblank = rcar_du_disable_vblank,
|
|
.gem_free_object = drm_gem_cma_free_object,
|
|
.gem_vm_ops = &drm_gem_cma_vm_ops,
|
|
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
|
|
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
|
|
.gem_prime_import = drm_gem_prime_import,
|
|
.gem_prime_export = drm_gem_prime_export,
|
|
.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
|
|
.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
|
|
.gem_prime_vmap = drm_gem_cma_prime_vmap,
|
|
.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
|
|
.gem_prime_mmap = drm_gem_cma_prime_mmap,
|
|
.dumb_create = rcar_du_dumb_create,
|
|
.dumb_map_offset = drm_gem_cma_dumb_map_offset,
|
|
.dumb_destroy = drm_gem_dumb_destroy,
|
|
.fops = &rcar_du_fops,
|
|
.name = "rcar-du",
|
|
.desc = "Renesas R-Car Display Unit",
|
|
.date = "20130110",
|
|
.major = 1,
|
|
.minor = 0,
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Power management
|
|
*/
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int rcar_du_pm_suspend(struct device *dev)
|
|
{
|
|
struct rcar_du_device *rcdu = dev_get_drvdata(dev);
|
|
|
|
drm_kms_helper_poll_disable(rcdu->ddev);
|
|
/* TODO Suspend the CRTC */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rcar_du_pm_resume(struct device *dev)
|
|
{
|
|
struct rcar_du_device *rcdu = dev_get_drvdata(dev);
|
|
|
|
/* TODO Resume the CRTC */
|
|
|
|
drm_kms_helper_poll_enable(rcdu->ddev);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static const struct dev_pm_ops rcar_du_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume)
|
|
};
|
|
|
|
/* -----------------------------------------------------------------------------
|
|
* Platform driver
|
|
*/
|
|
|
|
static int rcar_du_probe(struct platform_device *pdev)
|
|
{
|
|
return drm_platform_init(&rcar_du_driver, pdev);
|
|
}
|
|
|
|
static int rcar_du_remove(struct platform_device *pdev)
|
|
{
|
|
struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
|
|
|
|
drm_put_dev(rcdu->ddev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct rcar_du_device_info rcar_du_r8a7779_info = {
|
|
.features = 0,
|
|
.num_crtcs = 2,
|
|
.routes = {
|
|
/* R8A7779 has two RGB outputs and one (currently unsupported)
|
|
* TCON output.
|
|
*/
|
|
[RCAR_DU_OUTPUT_DPAD0] = {
|
|
.possible_crtcs = BIT(0),
|
|
.encoder_type = DRM_MODE_ENCODER_NONE,
|
|
},
|
|
[RCAR_DU_OUTPUT_DPAD1] = {
|
|
.possible_crtcs = BIT(1) | BIT(0),
|
|
.encoder_type = DRM_MODE_ENCODER_NONE,
|
|
},
|
|
},
|
|
.num_lvds = 0,
|
|
};
|
|
|
|
static const struct rcar_du_device_info rcar_du_r8a7790_info = {
|
|
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_DEFR8,
|
|
.quirks = RCAR_DU_QUIRK_ALIGN_128B | RCAR_DU_QUIRK_LVDS_LANES,
|
|
.num_crtcs = 3,
|
|
.routes = {
|
|
/* R8A7790 has one RGB output, two LVDS outputs and one
|
|
* (currently unsupported) TCON output.
|
|
*/
|
|
[RCAR_DU_OUTPUT_DPAD0] = {
|
|
.possible_crtcs = BIT(2) | BIT(1) | BIT(0),
|
|
.encoder_type = DRM_MODE_ENCODER_NONE,
|
|
},
|
|
[RCAR_DU_OUTPUT_LVDS0] = {
|
|
.possible_crtcs = BIT(0),
|
|
.encoder_type = DRM_MODE_ENCODER_LVDS,
|
|
},
|
|
[RCAR_DU_OUTPUT_LVDS1] = {
|
|
.possible_crtcs = BIT(2) | BIT(1),
|
|
.encoder_type = DRM_MODE_ENCODER_LVDS,
|
|
},
|
|
},
|
|
.num_lvds = 2,
|
|
};
|
|
|
|
static const struct rcar_du_device_info rcar_du_r8a7791_info = {
|
|
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_DEFR8,
|
|
.num_crtcs = 2,
|
|
.routes = {
|
|
/* R8A7791 has one RGB output, one LVDS output and one
|
|
* (currently unsupported) TCON output.
|
|
*/
|
|
[RCAR_DU_OUTPUT_DPAD0] = {
|
|
.possible_crtcs = BIT(1),
|
|
.encoder_type = DRM_MODE_ENCODER_NONE,
|
|
},
|
|
[RCAR_DU_OUTPUT_LVDS0] = {
|
|
.possible_crtcs = BIT(0),
|
|
.encoder_type = DRM_MODE_ENCODER_LVDS,
|
|
},
|
|
},
|
|
.num_lvds = 1,
|
|
};
|
|
|
|
static const struct platform_device_id rcar_du_id_table[] = {
|
|
{ "rcar-du-r8a7779", (kernel_ulong_t)&rcar_du_r8a7779_info },
|
|
{ "rcar-du-r8a7790", (kernel_ulong_t)&rcar_du_r8a7790_info },
|
|
{ "rcar-du-r8a7791", (kernel_ulong_t)&rcar_du_r8a7791_info },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(platform, rcar_du_id_table);
|
|
|
|
static struct platform_driver rcar_du_platform_driver = {
|
|
.probe = rcar_du_probe,
|
|
.remove = rcar_du_remove,
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "rcar-du",
|
|
.pm = &rcar_du_pm_ops,
|
|
},
|
|
.id_table = rcar_du_id_table,
|
|
};
|
|
|
|
module_platform_driver(rcar_du_platform_driver);
|
|
|
|
MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
|
|
MODULE_DESCRIPTION("Renesas R-Car Display Unit DRM Driver");
|
|
MODULE_LICENSE("GPL");
|