/*
* rcar_du_drv.c -- R-Car Display Unit DRM driver
*
* Copyright (C) 2013-2015 Renesas Electronics 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/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/wait.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"
/* -----------------------------------------------------------------------------
* Device Information
*/
static const struct rcar_du_device_info rcar_du_r8a7779_info = {
.gen = 2,
.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,
.port = 0,
},
[RCAR_DU_OUTPUT_DPAD1] = {
.possible_crtcs = BIT(1) | BIT(0),
.encoder_type = DRM_MODE_ENCODER_NONE,
.port = 1,
},
},
.num_lvds = 0,
};
static const struct rcar_du_device_info rcar_du_r8a7790_info = {
.gen = 2,
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
| RCAR_DU_FEATURE_EXT_CTRL_REGS,
.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,
.port = 0,
},
[RCAR_DU_OUTPUT_LVDS0] = {
.possible_crtcs = BIT(0),
.encoder_type = DRM_MODE_ENCODER_LVDS,
.port = 1,
},
[RCAR_DU_OUTPUT_LVDS1] = {
.possible_crtcs = BIT(2) | BIT(1),
.encoder_type = DRM_MODE_ENCODER_LVDS,
.port = 2,
},
},
.num_lvds = 2,
};
/* M2-W (r8a7791) and M2-N (r8a7793) are identical */
static const struct rcar_du_device_info rcar_du_r8a7791_info = {
.gen = 2,
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
| RCAR_DU_FEATURE_EXT_CTRL_REGS,
.num_crtcs = 2,
.routes = {
/* R8A779[13] has one RGB output, one LVDS output and one
* (currently unsupported) TCON output.
*/
[RCAR_DU_OUTPUT_DPAD0] = {
.possible_crtcs = BIT(1) | BIT(0),
.encoder_type = DRM_MODE_ENCODER_NONE,
.port = 0,
},
[RCAR_DU_OUTPUT_LVDS0] = {
.possible_crtcs = BIT(0),
.encoder_type = DRM_MODE_ENCODER_LVDS,
.port = 1,
},
},
.num_lvds = 1,
};
static const struct rcar_du_device_info rcar_du_r8a7792_info = {
.gen = 2,
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
| RCAR_DU_FEATURE_EXT_CTRL_REGS,
.num_crtcs = 2,
.routes = {
/* R8A7792 has two RGB outputs. */
[RCAR_DU_OUTPUT_DPAD0] = {
.possible_crtcs = BIT(0),
.encoder_type = DRM_MODE_ENCODER_NONE,
.port = 0,
},
[RCAR_DU_OUTPUT_DPAD1] = {
.possible_crtcs = BIT(1),
.encoder_type = DRM_MODE_ENCODER_NONE,
.port = 1,
},
},
.num_lvds = 0,
};
static const struct rcar_du_device_info rcar_du_r8a7794_info = {
.gen = 2,
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
| RCAR_DU_FEATURE_EXT_CTRL_REGS,
.num_crtcs = 2,
.routes = {
/* R8A7794 has two RGB outputs and one (currently unsupported)
* TCON output.
*/
[RCAR_DU_OUTPUT_DPAD0] = {
.possible_crtcs = BIT(0),
.encoder_type = DRM_MODE_ENCODER_NONE,
.port = 0,
},
[RCAR_DU_OUTPUT_DPAD1] = {
.possible_crtcs = BIT(1),
.encoder_type = DRM_MODE_ENCODER_NONE,
.port = 1,
},
},
.num_lvds = 0,
};
static const struct rcar_du_device_info rcar_du_r8a7795_info = {
.gen = 3,
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
| RCAR_DU_FEATURE_EXT_CTRL_REGS
| RCAR_DU_FEATURE_VSP1_SOURCE,
.num_crtcs = 4,
.routes = {
/* R8A7795 has one RGB output, one LVDS output and two
* (currently unsupported) HDMI outputs.
*/
[RCAR_DU_OUTPUT_DPAD0] = {
.possible_crtcs = BIT(3),
.encoder_type = DRM_MODE_ENCODER_NONE,
.port = 0,
},
[RCAR_DU_OUTPUT_LVDS0] = {
.possible_crtcs = BIT(0),
.encoder_type = DRM_MODE_ENCODER_LVDS,
.port = 3,
},
},
.num_lvds = 1,
};
static const struct rcar_du_device_info rcar_du_r8a7796_info = {
.gen = 3,
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
| RCAR_DU_FEATURE_EXT_CTRL_REGS
| RCAR_DU_FEATURE_VSP1_SOURCE,
.num_crtcs = 3,
.routes = {
/* R8A7796 has one RGB output, one LVDS output and one
* (currently unsupported) HDMI output.
*/
[RCAR_DU_OUTPUT_DPAD0] = {
.possible_crtcs = BIT(2),
.encoder_type = DRM_MODE_ENCODER_NONE,
.port = 0,
},
[RCAR_DU_OUTPUT_LVDS0] = {
.possible_crtcs = BIT(0),
.encoder_type = DRM_MODE_ENCODER_LVDS,
.port = 2,
},
},
.num_lvds = 1,
};
static const struct of_device_id rcar_du_of_table[] = {
{ .compatible = "renesas,du-r8a7779", .data = &rcar_du_r8a7779_info },
{ .compatible = "renesas,du-r8a7790", .data = &rcar_du_r8a7790_info },
{ .compatible = "renesas,du-r8a7791", .data = &rcar_du_r8a7791_info },
{ .compatible = "renesas,du-r8a7792", .data = &rcar_du_r8a7792_info },
{ .compatible = "renesas,du-r8a7793", .data = &rcar_du_r8a7791_info },
{ .compatible = "renesas,du-r8a7794", .data = &rcar_du_r8a7794_info },
{ .compatible = "renesas,du-r8a7795", .data = &rcar_du_r8a7795_info },
{ .compatible = "renesas,du-r8a7796", .data = &rcar_du_r8a7796_info },
{ }
};
MODULE_DEVICE_TABLE(of, rcar_du_of_table);
/* -----------------------------------------------------------------------------
* DRM operations
*/
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, unsigned int pipe)
{
struct rcar_du_device *rcdu = dev->dev_private;
rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], true);
return 0;
}
static void rcar_du_disable_vblank(struct drm_device *dev, unsigned int pipe)
{
struct rcar_du_device *rcdu = dev->dev_private;
rcar_du_crtc_enable_vblank(&rcdu->crtcs[pipe], false);
}
static const struct file_operations rcar_du_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
.compat_ioctl = drm_compat_ioctl,
.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
| DRIVER_ATOMIC,
.lastclose = rcar_du_lastclose,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = rcar_du_enable_vblank,
.disable_vblank = rcar_du_disable_vblank,
.gem_free_object_unlocked = 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 [31mCONFIG_PM_SLEEP[0m
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_remove(struct platform_device *pdev)
{
struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
struct drm_device *ddev = rcdu->ddev;
drm_dev_unregister(ddev);
if (rcdu->fbdev)
drm_fbdev_cma_fini(rcdu->fbdev);
drm_kms_helper_poll_fini(ddev);
drm_mode_config_cleanup(ddev);
drm_dev_unref(ddev);
return 0;
}
static int rcar_du_probe(struct platform_device *pdev)
{
struct rcar_du_device *rcdu;
struct drm_device *ddev;
struct resource *mem;
int ret;
/* Allocate and initialize the R-Car device structure. */
rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL);
if (rcdu == NULL)
return -ENOMEM;
init_waitqueue_head(&rcdu->commit.wait);
rcdu->dev = &pdev->dev;
rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data;
platform_set_drvdata(pdev, 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 */
ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev);
if (IS_ERR(ddev))
return PTR_ERR(ddev);
rcdu->ddev = ddev;
ddev->dev_private = rcdu;
ret = rcar_du_modeset_init(rcdu);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev,
"failed to initialize DRM/KMS (%d)\n", ret);
goto error;
}
ddev->irq_enabled = 1;
/* Register the DRM device with the core and the connectors with
* sysfs.
*/
ret = drm_dev_register(ddev, 0);
if (ret)
goto error;
DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
return 0;
error:
rcar_du_remove(pdev);
return ret;
}
static struct platform_driver rcar_du_platform_driver = {
.probe = rcar_du_probe,
.remove = rcar_du_remove,
.driver = {
.name = "rcar-du",
.pm = &rcar_du_pm_ops,
.of_match_table = rcar_du_of_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");