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Merge branch 'drm-next-fsl-dcu' of https://github.com/Jianwei-Wang/linux-drm-fsl-dcu into drm-next

Browse Source 
Merge Freescale DCU FRM driver.

* 'drm-next-fsl-dcu' of https://github.com/Jianwei-Wang/linux-drm-fsl-dcu:
  MAINTAINERS: Add Freescale DCU DRM driver maintainer
  devicetree: Add NEC to the vendor-prefix list
  drm/layerscape: Add Freescale DCU DRM driver
This commit is contained in:
Dave Airlie 2015-08-20 14:11:17 +10:00
commit aaba64487a
17 changed files with 1449 additions and 0 deletions
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1
Documentation/devicetree/bindings/vendor-prefixes.txt
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@ -140,6 +140,7 @@ mundoreader Mundo Reader S.L.
murata Murata Manufacturing Co., Ltd.
mxicy Macronix International Co., Ltd.
national National Semiconductor
nec NEC LCD Technologies, Ltd.
neonode Neonode Inc.
netgear NETGEAR
netlogic Broadcom Corporation (formerly NetLogic Microsystems)

22
Documentation/devicetree/bindings/video/fsl,dcu.txt Normal file
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@ -0,0 +1,22 @@
Device Tree bindings for Freescale DCU DRM Driver
Required properties:
- compatible: Should be one of
* "fsl,ls1021a-dcu".
* "fsl,vf610-dcu".
- reg: Address and length of the register set for dcu.
- clocks: From common clock binding: handle to dcu clock.
- clock-names: From common clock binding: Shall be "dcu".
- big-endian Boolean property, LS1021A DCU registers are big-endian.
- fsl,panel: The phandle to panel node.
Examples:
dcu: dcu@2ce0000 {
compatible = "fsl,ls1021a-dcu";
reg = <0x0 0x2ce0000 0x0 0x10000>;
clocks = <&platform_clk 0>;
clock-names = "dcu";
big-endian;
fsl,panel = <&panel>;
};

9
MAINTAINERS
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@ -3555,6 +3555,15 @@ F: drivers/gpu/drm/exynos/
F: include/drm/exynos*
F: include/uapi/drm/exynos*
DRM DRIVERS FOR FREESCALE DCU
M: Jianwei Wang <jianwei.wang.chn@gmail.com>
M: Alison Wang <alison.wang@freescale.com>
L: dri-devel@lists.freedesktop.org
S: Supported
F: drivers/gpu/drm/fsl-dcu/
F: Documentation/devicetree/bindings/video/fsl,dcu.txt
F: Documentation/devicetree/bindings/panel/nec,nl4827hc19_05b.txt
DRM DRIVERS FOR FREESCALE IMX
M: Philipp Zabel <p.zabel@pengutronix.de>
L: dri-devel@lists.freedesktop.org

2
drivers/gpu/drm/Kconfig
View File

@ -251,6 +251,8 @@ source "drivers/gpu/drm/virtio/Kconfig"
source "drivers/gpu/drm/msm/Kconfig"
source "drivers/gpu/drm/fsl-dcu/Kconfig"
source "drivers/gpu/drm/tegra/Kconfig"
source "drivers/gpu/drm/panel/Kconfig"

1
drivers/gpu/drm/Makefile
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@ -70,3 +70,4 @@ obj-$(CONFIG_DRM_IMX) += imx/
obj-y += i2c/
obj-y += panel/
obj-y += bridge/
obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu/

18
drivers/gpu/drm/fsl-dcu/Kconfig Normal file
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@ -0,0 +1,18 @@
config DRM_FSL_DCU
tristate "DRM Support for Freescale DCU"
depends on DRM && OF && ARM
select BACKLIGHT_CLASS_DEVICE
select BACKLIGHT_LCD_SUPPORT
select DRM_KMS_HELPER
select DRM_KMS_CMA_HELPER
select DRM_KMS_FB_HELPER
select DRM_PANEL
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select REGMAP_MMIO
select VIDEOMODE_HELPERS
help
Choose this option if you have an Freescale DCU chipset.
If M is selected the module will be called fsl-dcu-drm.

7
drivers/gpu/drm/fsl-dcu/Makefile Normal file
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@ -0,0 +1,7 @@
fsl-dcu-drm-y := fsl_dcu_drm_drv.o \
fsl_dcu_drm_kms.o \
fsl_dcu_drm_rgb.o \
fsl_dcu_drm_plane.o \
fsl_dcu_drm_crtc.o \
fsl_dcu_drm_fbdev.o
obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu-drm.o

210
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c Normal file
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@ -0,0 +1,210 @@
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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/regmap.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include "fsl_dcu_drm_crtc.h"
#include "fsl_dcu_drm_drv.h"
#include "fsl_dcu_drm_plane.h"
static void fsl_dcu_drm_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
}
static int fsl_dcu_drm_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
return 0;
}
static void fsl_dcu_drm_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
}
static void fsl_dcu_drm_disable_crtc(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
int ret;
ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
DCU_MODE_DCU_MODE_MASK,
DCU_MODE_DCU_MODE(DCU_MODE_OFF));
if (ret)
dev_err(fsl_dev->dev, "Disable CRTC failed\n");
ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
DCU_UPDATE_MODE_READREG);
if (ret)
dev_err(fsl_dev->dev, "Enable CRTC failed\n");
}
static void fsl_dcu_drm_crtc_enable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
int ret;
ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
DCU_MODE_DCU_MODE_MASK,
DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
if (ret)
dev_err(fsl_dev->dev, "Enable CRTC failed\n");
ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
DCU_UPDATE_MODE_READREG);
if (ret)
dev_err(fsl_dev->dev, "Enable CRTC failed\n");
}
static bool fsl_dcu_drm_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static void fsl_dcu_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
struct drm_display_mode *mode = &crtc->state->mode;
unsigned int hbp, hfp, hsw, vbp, vfp, vsw, div, index;
unsigned long dcuclk;
int ret;
index = drm_crtc_index(crtc);
dcuclk = clk_get_rate(fsl_dev->clk);
div = dcuclk / mode->clock / 1000;
/* Configure timings: */
hbp = mode->htotal - mode->hsync_end;
hfp = mode->hsync_start - mode->hdisplay;
hsw = mode->hsync_end - mode->hsync_start;
vbp = mode->vtotal - mode->vsync_end;
vfp = mode->vsync_start - mode->vdisplay;
vsw = mode->vsync_end - mode->vsync_start;
ret = regmap_write(fsl_dev->regmap, DCU_HSYN_PARA,
DCU_HSYN_PARA_BP(hbp) |
DCU_HSYN_PARA_PW(hsw) |
DCU_HSYN_PARA_FP(hfp));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_VSYN_PARA,
DCU_VSYN_PARA_BP(vbp) |
DCU_VSYN_PARA_PW(vsw) |
DCU_VSYN_PARA_FP(vfp));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_DISP_SIZE,
DCU_DISP_SIZE_DELTA_Y(mode->vdisplay) |
DCU_DISP_SIZE_DELTA_X(mode->hdisplay));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_DIV_RATIO, div);
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_SYN_POL,
DCU_SYN_POL_INV_VS_LOW | DCU_SYN_POL_INV_HS_LOW);
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_BGND, DCU_BGND_R(0) |
DCU_BGND_G(0) | DCU_BGND_B(0));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_DCU_MODE,
DCU_MODE_BLEND_ITER(1) | DCU_MODE_RASTER_EN);
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_THRESHOLD,
DCU_THRESHOLD_LS_BF_VS(BF_VS_VAL) |
DCU_THRESHOLD_OUT_BUF_HIGH(BUF_MAX_VAL) |
DCU_THRESHOLD_OUT_BUF_LOW(BUF_MIN_VAL));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
DCU_UPDATE_MODE_READREG);
if (ret)
goto set_failed;
return;
set_failed:
dev_err(dev->dev, "set DCU register failed\n");
}
static const struct drm_crtc_helper_funcs fsl_dcu_drm_crtc_helper_funcs = {
.atomic_begin = fsl_dcu_drm_crtc_atomic_begin,
.atomic_check = fsl_dcu_drm_crtc_atomic_check,
.atomic_flush = fsl_dcu_drm_crtc_atomic_flush,
.disable = fsl_dcu_drm_disable_crtc,
.enable = fsl_dcu_drm_crtc_enable,
.mode_fixup = fsl_dcu_drm_crtc_mode_fixup,
.mode_set_nofb = fsl_dcu_drm_crtc_mode_set_nofb,
};
static const struct drm_crtc_funcs fsl_dcu_drm_crtc_funcs = {
.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
.destroy = drm_crtc_cleanup,
.page_flip = drm_atomic_helper_page_flip,
.reset = drm_atomic_helper_crtc_reset,
.set_config = drm_atomic_helper_set_config,
};
int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev)
{
struct drm_plane *primary;
struct drm_crtc *crtc = &fsl_dev->crtc;
unsigned int i, j, reg_num;
int ret;
primary = fsl_dcu_drm_primary_create_plane(fsl_dev->drm);
ret = drm_crtc_init_with_planes(fsl_dev->drm, crtc, primary, NULL,
&fsl_dcu_drm_crtc_funcs);
if (ret < 0)
return ret;
drm_crtc_helper_add(crtc, &fsl_dcu_drm_crtc_helper_funcs);
if (!strcmp(fsl_dev->soc->name, "ls1021a"))
reg_num = LS1021A_LAYER_REG_NUM;
else
reg_num = VF610_LAYER_REG_NUM;
for (i = 0; i <= fsl_dev->soc->total_layer; i++) {
for (j = 0; j < reg_num; j++) {
ret = regmap_write(fsl_dev->regmap,
DCU_CTRLDESCLN(i, j), 0);
if (ret)
goto init_failed;
}
}
ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
DCU_MODE_DCU_MODE_MASK,
DCU_MODE_DCU_MODE(DCU_MODE_OFF));
if (ret)
goto init_failed;
ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
DCU_UPDATE_MODE_READREG);
if (ret)
goto init_failed;
return 0;
init_failed:
dev_err(fsl_dev->dev, "init DCU register failed\n");
return ret;
}

19
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.h Normal file
View File

@ -0,0 +1,19 @@
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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.
*/
#ifndef __FSL_DCU_DRM_CRTC_H__
#define __FSL_DCU_DRM_CRTC_H__
struct fsl_dcu_drm_device;
int fsl_dcu_drm_crtc_create(struct fsl_dcu_drm_device *fsl_dev);
#endif /* __FSL_DCU_DRM_CRTC_H__ */

404
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c Normal file
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@ -0,0 +1,404 @@
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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/clk-provider.h>
#include <linux/io.h>
#include <linux/mfd/syscon.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include "fsl_dcu_drm_crtc.h"
#include "fsl_dcu_drm_drv.h"
static const struct regmap_config fsl_dcu_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.cache_type = REGCACHE_RBTREE,
};
static int fsl_dcu_drm_irq_init(struct drm_device *dev)
{
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
unsigned int value;
int ret;
ret = drm_irq_install(dev, fsl_dev->irq);
if (ret < 0)
dev_err(dev->dev, "failed to install IRQ handler\n");
ret = regmap_write(fsl_dev->regmap, DCU_INT_STATUS, 0);
if (ret)
dev_err(dev->dev, "set DCU_INT_STATUS failed\n");
ret = regmap_read(fsl_dev->regmap, DCU_INT_MASK, &value);
if (ret)
dev_err(dev->dev, "read DCU_INT_MASK failed\n");
value &= DCU_INT_MASK_VBLANK;
ret = regmap_write(fsl_dev->regmap, DCU_INT_MASK, value);
if (ret)
dev_err(dev->dev, "set DCU_INT_MASK failed\n");
ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
DCU_UPDATE_MODE_READREG);
if (ret)
dev_err(dev->dev, "set DCU_UPDATE_MODE failed\n");
return ret;
}
static int fsl_dcu_load(struct drm_device *drm, unsigned long flags)
{
struct device *dev = drm->dev;
struct fsl_dcu_drm_device *fsl_dev = drm->dev_private;
int ret;
ret = fsl_dcu_drm_modeset_init(fsl_dev);
if (ret < 0) {
dev_err(dev, "failed to initialize mode setting\n");
return ret;
}
ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
if (ret < 0) {
dev_err(dev, "failed to initialize vblank\n");
goto done;
}
drm->vblank_disable_allowed = true;
ret = fsl_dcu_drm_irq_init(drm);
if (ret < 0)
goto done;
drm->irq_enabled = true;
fsl_dcu_fbdev_init(drm);
return 0;
done:
if (ret) {
drm_mode_config_cleanup(drm);
drm_vblank_cleanup(drm);
drm_irq_uninstall(drm);
drm->dev_private = NULL;
}
return ret;
}
static int fsl_dcu_unload(struct drm_device *dev)
{
drm_mode_config_cleanup(dev);
drm_vblank_cleanup(dev);
drm_irq_uninstall(dev);
dev->dev_private = NULL;
return 0;
}
static void fsl_dcu_drm_preclose(struct drm_device *dev, struct drm_file *file)
{
}
static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg)
{
struct drm_device *dev = arg;
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
unsigned int int_status;
int ret;
ret = regmap_read(fsl_dev->regmap, DCU_INT_STATUS, &int_status);
if (ret)
dev_err(dev->dev, "set DCU_INT_STATUS failed\n");
if (int_status & DCU_INT_STATUS_VBLANK)
drm_handle_vblank(dev, 0);
ret = regmap_write(fsl_dev->regmap, DCU_INT_STATUS, 0xffffffff);
if (ret)
dev_err(dev->dev, "set DCU_INT_STATUS failed\n");
ret = regmap_write(fsl_dev->regmap, DCU_UPDATE_MODE,
DCU_UPDATE_MODE_READREG);
if (ret)
dev_err(dev->dev, "set DCU_UPDATE_MODE failed\n");
return IRQ_HANDLED;
}
static int fsl_dcu_drm_enable_vblank(struct drm_device *dev, int crtc)
{
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
unsigned int value;
int ret;
ret = regmap_read(fsl_dev->regmap, DCU_INT_MASK, &value);
if (ret)
dev_err(dev->dev, "read DCU_INT_MASK failed\n");
value &= ~DCU_INT_MASK_VBLANK;
ret = regmap_write(fsl_dev->regmap, DCU_INT_MASK, value);
if (ret)
dev_err(dev->dev, "set DCU_INT_MASK failed\n");
return 0;
}
static void fsl_dcu_drm_disable_vblank(struct drm_device *dev, int crtc)
{
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
unsigned int value;
int ret;
ret = regmap_read(fsl_dev->regmap, DCU_INT_MASK, &value);
if (ret)
dev_err(dev->dev, "read DCU_INT_MASK failed\n");
value |= DCU_INT_MASK_VBLANK;
ret = regmap_write(fsl_dev->regmap, DCU_INT_MASK, value);
if (ret)
dev_err(dev->dev, "set DCU_INT_MASK failed\n");
}
static const struct file_operations fsl_dcu_drm_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 fsl_dcu_drm_driver = {
.driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET
| DRIVER_PRIME | DRIVER_ATOMIC,
.load = fsl_dcu_load,
.unload = fsl_dcu_unload,
.preclose = fsl_dcu_drm_preclose,
.irq_handler = fsl_dcu_drm_irq,
.get_vblank_counter = drm_vblank_count,
.enable_vblank = fsl_dcu_drm_enable_vblank,
.disable_vblank = fsl_dcu_drm_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 = drm_gem_cma_dumb_create,
.dumb_map_offset = drm_gem_cma_dumb_map_offset,
.dumb_destroy = drm_gem_dumb_destroy,
.fops = &fsl_dcu_drm_fops,
.name = "fsl-dcu-drm",
.desc = "Freescale DCU DRM",
.date = "20150213",
.major = 1,
.minor = 0,
};
#ifdef CONFIG_PM_SLEEP
static int fsl_dcu_drm_pm_suspend(struct device *dev)
{
struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev);
if (!fsl_dev)
return 0;
drm_kms_helper_poll_disable(fsl_dev->drm);
regcache_cache_only(fsl_dev->regmap, true);
regcache_mark_dirty(fsl_dev->regmap);
clk_disable(fsl_dev->clk);
clk_unprepare(fsl_dev->clk);
return 0;
}
static int fsl_dcu_drm_pm_resume(struct device *dev)
{
struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev);
int ret;
if (!fsl_dev)
return 0;
ret = clk_enable(fsl_dev->clk);
if (ret < 0) {
dev_err(dev, "failed to enable dcu clk\n");
clk_unprepare(fsl_dev->clk);
return ret;
}
ret = clk_prepare(fsl_dev->clk);
if (ret < 0) {
dev_err(dev, "failed to prepare dcu clk\n");
return ret;
}
drm_kms_helper_poll_enable(fsl_dev->drm);
regcache_cache_only(fsl_dev->regmap, false);
regcache_sync(fsl_dev->regmap);
return 0;
}
#endif
static const struct dev_pm_ops fsl_dcu_drm_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(fsl_dcu_drm_pm_suspend, fsl_dcu_drm_pm_resume)
};
static const struct fsl_dcu_soc_data fsl_dcu_ls1021a_data = {
.name = "ls1021a",
.total_layer = 16,
.max_layer = 4,
};
static const struct fsl_dcu_soc_data fsl_dcu_vf610_data = {
.name = "vf610",
.total_layer = 64,
.max_layer = 6,
};
static const struct of_device_id fsl_dcu_of_match[] = {
{
.compatible = "fsl,ls1021a-dcu",
.data = &fsl_dcu_ls1021a_data,
}, {
.compatible = "fsl,vf610-dcu",
.data = &fsl_dcu_vf610_data,
}, {
},
};
MODULE_DEVICE_TABLE(of, fsl_dcu_of_match);
static int fsl_dcu_drm_probe(struct platform_device *pdev)
{
struct fsl_dcu_drm_device *fsl_dev;
struct drm_device *drm;
struct device *dev = &pdev->dev;
struct resource *res;
void __iomem *base;
struct drm_driver *driver = &fsl_dcu_drm_driver;
const struct of_device_id *id;
int ret;
fsl_dev = devm_kzalloc(dev, sizeof(*fsl_dev), GFP_KERNEL);
if (!fsl_dev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "could not get memory IO resource\n");
return -ENODEV;
}
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
return ret;
}
fsl_dev->irq = platform_get_irq(pdev, 0);
if (fsl_dev->irq < 0) {
dev_err(dev, "failed to get irq\n");
return -ENXIO;
}
fsl_dev->clk = devm_clk_get(dev, "dcu");
if (IS_ERR(fsl_dev->clk)) {
ret = PTR_ERR(fsl_dev->clk);
dev_err(dev, "failed to get dcu clock\n");
return ret;
}
ret = clk_prepare(fsl_dev->clk);
if (ret < 0) {
dev_err(dev, "failed to prepare dcu clk\n");
return ret;
}
ret = clk_enable(fsl_dev->clk);
if (ret < 0) {
dev_err(dev, "failed to enable dcu clk\n");
clk_unprepare(fsl_dev->clk);
return ret;
}
fsl_dev->regmap = devm_regmap_init_mmio(dev, base,
&fsl_dcu_regmap_config);
if (IS_ERR(fsl_dev->regmap)) {
dev_err(dev, "regmap init failed\n");
return PTR_ERR(fsl_dev->regmap);
}
id = of_match_node(fsl_dcu_of_match, pdev->dev.of_node);
if (!id)
return -ENODEV;
fsl_dev->soc = id->data;
drm = drm_dev_alloc(driver, dev);
if (!drm)
return -ENOMEM;
fsl_dev->dev = dev;
fsl_dev->drm = drm;
fsl_dev->np = dev->of_node;
drm->dev_private = fsl_dev;
dev_set_drvdata(dev, fsl_dev);
drm_dev_set_unique(drm, dev_name(dev));
ret = drm_dev_register(drm, 0);
if (ret < 0)
goto unref;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
driver->major, driver->minor, driver->patchlevel,
driver->date, drm->primary->index);
return 0;
unref:
drm_dev_unref(drm);
return ret;
}
static int fsl_dcu_drm_remove(struct platform_device *pdev)
{
struct fsl_dcu_drm_device *fsl_dev = platform_get_drvdata(pdev);
drm_put_dev(fsl_dev->drm);
return 0;
}
static struct platform_driver fsl_dcu_drm_platform_driver = {
.probe = fsl_dcu_drm_probe,
.remove = fsl_dcu_drm_remove,
.driver = {
.name = "fsl-dcu",
.pm = &fsl_dcu_drm_pm_ops,
.of_match_table = fsl_dcu_of_match,
},
};
module_platform_driver(fsl_dcu_drm_platform_driver);
MODULE_DESCRIPTION("Freescale DCU DRM Driver");
MODULE_LICENSE("GPL");

197
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.h Normal file
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/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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.
*/
#ifndef __FSL_DCU_DRM_DRV_H__
#define __FSL_DCU_DRM_DRV_H__
#include "fsl_dcu_drm_crtc.h"
#include "fsl_dcu_drm_output.h"
#include "fsl_dcu_drm_plane.h"
#define DCU_DCU_MODE 0x0010
#define DCU_MODE_BLEND_ITER(x) ((x) << 20)
#define DCU_MODE_RASTER_EN BIT(14)
#define DCU_MODE_DCU_MODE(x) (x)
#define DCU_MODE_DCU_MODE_MASK 0x03
#define DCU_MODE_OFF 0
#define DCU_MODE_NORMAL 1
#define DCU_MODE_TEST 2
#define DCU_MODE_COLORBAR 3
#define DCU_BGND 0x0014
#define DCU_BGND_R(x) ((x) << 16)
#define DCU_BGND_G(x) ((x) << 8)
#define DCU_BGND_B(x) (x)
#define DCU_DISP_SIZE 0x0018
#define DCU_DISP_SIZE_DELTA_Y(x) ((x) << 16)
/*Regisiter value 1/16 of horizontal resolution*/
#define DCU_DISP_SIZE_DELTA_X(x) ((x) >> 4)
#define DCU_HSYN_PARA 0x001c
#define DCU_HSYN_PARA_BP(x) ((x) << 22)
#define DCU_HSYN_PARA_PW(x) ((x) << 11)
#define DCU_HSYN_PARA_FP(x) (x)
#define DCU_VSYN_PARA 0x0020
#define DCU_VSYN_PARA_BP(x) ((x) << 22)
#define DCU_VSYN_PARA_PW(x) ((x) << 11)
#define DCU_VSYN_PARA_FP(x) (x)
#define DCU_SYN_POL 0x0024
#define DCU_SYN_POL_INV_PXCK_FALL (0 << 6)
#define DCU_SYN_POL_NEG_REMAIN (0 << 5)
#define DCU_SYN_POL_INV_VS_LOW BIT(1)
#define DCU_SYN_POL_INV_HS_LOW BIT(0)
#define DCU_THRESHOLD 0x0028
#define DCU_THRESHOLD_LS_BF_VS(x) ((x) << 16)
#define DCU_THRESHOLD_OUT_BUF_HIGH(x) ((x) << 8)
#define DCU_THRESHOLD_OUT_BUF_LOW(x) (x)
#define BF_VS_VAL 0x03
#define BUF_MAX_VAL 0x78
#define BUF_MIN_VAL 0x0a
#define DCU_INT_STATUS 0x002C
#define DCU_INT_STATUS_VSYNC BIT(0)
#define DCU_INT_STATUS_UNDRUN BIT(1)
#define DCU_INT_STATUS_LSBFVS BIT(2)
#define DCU_INT_STATUS_VBLANK BIT(3)
#define DCU_INT_STATUS_CRCREADY BIT(4)
#define DCU_INT_STATUS_CRCOVERFLOW BIT(5)
#define DCU_INT_STATUS_P1FIFOLO BIT(6)
#define DCU_INT_STATUS_P1FIFOHI BIT(7)
#define DCU_INT_STATUS_P2FIFOLO BIT(8)
#define DCU_INT_STATUS_P2FIFOHI BIT(9)
#define DCU_INT_STATUS_PROGEND BIT(10)
#define DCU_INT_STATUS_IPMERROR BIT(11)
#define DCU_INT_STATUS_LYRTRANS BIT(12)
#define DCU_INT_STATUS_DMATRANS BIT(14)
#define DCU_INT_STATUS_P3FIFOLO BIT(16)
#define DCU_INT_STATUS_P3FIFOHI BIT(17)
#define DCU_INT_STATUS_P4FIFOLO BIT(18)
#define DCU_INT_STATUS_P4FIFOHI BIT(19)
#define DCU_INT_STATUS_P1EMPTY BIT(26)
#define DCU_INT_STATUS_P2EMPTY BIT(27)
#define DCU_INT_STATUS_P3EMPTY BIT(28)
#define DCU_INT_STATUS_P4EMPTY BIT(29)
#define DCU_INT_MASK 0x0030
#define DCU_INT_MASK_VSYNC BIT(0)
#define DCU_INT_MASK_UNDRUN BIT(1)
#define DCU_INT_MASK_LSBFVS BIT(2)
#define DCU_INT_MASK_VBLANK BIT(3)
#define DCU_INT_MASK_CRCREADY BIT(4)
#define DCU_INT_MASK_CRCOVERFLOW BIT(5)
#define DCU_INT_MASK_P1FIFOLO BIT(6)
#define DCU_INT_MASK_P1FIFOHI BIT(7)
#define DCU_INT_MASK_P2FIFOLO BIT(8)
#define DCU_INT_MASK_P2FIFOHI BIT(9)
#define DCU_INT_MASK_PROGEND BIT(10)
#define DCU_INT_MASK_IPMERROR BIT(11)
#define DCU_INT_MASK_LYRTRANS BIT(12)
#define DCU_INT_MASK_DMATRANS BIT(14)
#define DCU_INT_MASK_P3FIFOLO BIT(16)
#define DCU_INT_MASK_P3FIFOHI BIT(17)
#define DCU_INT_MASK_P4FIFOLO BIT(18)
#define DCU_INT_MASK_P4FIFOHI BIT(19)
#define DCU_INT_MASK_P1EMPTY BIT(26)
#define DCU_INT_MASK_P2EMPTY BIT(27)
#define DCU_INT_MASK_P3EMPTY BIT(28)
#define DCU_INT_MASK_P4EMPTY BIT(29)
#define DCU_DIV_RATIO 0x0054
#define DCU_UPDATE_MODE 0x00cc
#define DCU_UPDATE_MODE_MODE BIT(31)
#define DCU_UPDATE_MODE_READREG BIT(30)
#define DCU_DCFB_MAX 0x300
#define DCU_CTRLDESCLN(layer, reg) (0x200 + (reg - 1) * 4 + (layer) * 0x40)
#define DCU_LAYER_HEIGHT(x) ((x) << 16)
#define DCU_LAYER_WIDTH(x) (x)
#define DCU_LAYER_POSY(x) ((x) << 16)
#define DCU_LAYER_POSX(x) (x)
#define DCU_LAYER_EN BIT(31)
#define DCU_LAYER_TILE_EN BIT(30)
#define DCU_LAYER_DATA_SEL_CLUT BIT(29)
#define DCU_LAYER_SAFETY_EN BIT(28)
#define DCU_LAYER_TRANS(x) ((x) << 20)
#define DCU_LAYER_BPP(x) ((x) << 16)
#define DCU_LAYER_RLE_EN BIT(15)
#define DCU_LAYER_LUOFFS(x) ((x) << 4)
#define DCU_LAYER_BB_ON BIT(2)
#define DCU_LAYER_AB(x) (x)
#define DCU_LAYER_CKMAX_R(x) ((x) << 16)
#define DCU_LAYER_CKMAX_G(x) ((x) << 8)
#define DCU_LAYER_CKMAX_B(x) (x)
#define DCU_LAYER_CKMIN_R(x) ((x) << 16)
#define DCU_LAYER_CKMIN_G(x) ((x) << 8)
#define DCU_LAYER_CKMIN_B(x) (x)
#define DCU_LAYER_TILE_VER(x) ((x) << 16)
#define DCU_LAYER_TILE_HOR(x) (x)
#define DCU_LAYER_FG_FCOLOR(x) (x)
#define DCU_LAYER_BG_BCOLOR(x) (x)
#define DCU_LAYER_POST_SKIP(x) ((x) << 16)
#define DCU_LAYER_PRE_SKIP(x) (x)
#define FSL_DCU_RGB565 4
#define FSL_DCU_RGB888 5
#define FSL_DCU_ARGB8888 6
#define FSL_DCU_ARGB1555 11
#define FSL_DCU_ARGB4444 12
#define FSL_DCU_YUV422 14
#define VF610_LAYER_REG_NUM 9
#define LS1021A_LAYER_REG_NUM 10
struct clk;
struct device;
struct drm_device;
struct fsl_dcu_soc_data {
const char *name;
/*total layer number*/
unsigned int total_layer;
/*max layer number DCU supported*/
unsigned int max_layer;
};
struct fsl_dcu_drm_device {
struct device *dev;
struct device_node *np;
struct regmap *regmap;
int irq;
struct clk *clk;
/*protects hardware register*/
spinlock_t irq_lock;
struct drm_device *drm;
struct drm_fbdev_cma *fbdev;
struct drm_crtc crtc;
struct drm_encoder encoder;
struct fsl_dcu_drm_connector connector;
const struct fsl_dcu_soc_data *soc;
};
void fsl_dcu_fbdev_init(struct drm_device *dev);
int fsl_dcu_drm_modeset_init(struct fsl_dcu_drm_device *fsl_dev);
#endif /* __FSL_DCU_DRM_DRV_H__ */

23
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_fbdev.c Normal file
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@ -0,0 +1,23 @@
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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 <drm/drmP.h>
#include <drm/drm_fb_cma_helper.h>
#include "fsl_dcu_drm_drv.h"
/* initialize fbdev helper */
void fsl_dcu_fbdev_init(struct drm_device *dev)
{
struct fsl_dcu_drm_device *fsl_dev = dev_get_drvdata(dev->dev);
fsl_dev->fbdev = drm_fbdev_cma_init(dev, 24, 1, 1);
}

43
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c Normal file
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@ -0,0 +1,43 @@
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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 <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include "fsl_dcu_drm_crtc.h"
#include "fsl_dcu_drm_drv.h"
static const struct drm_mode_config_funcs fsl_dcu_drm_mode_config_funcs = {
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
.fb_create = drm_fb_cma_create,
};
int fsl_dcu_drm_modeset_init(struct fsl_dcu_drm_device *fsl_dev)
{
drm_mode_config_init(fsl_dev->drm);
fsl_dev->drm->mode_config.min_width = 0;
fsl_dev->drm->mode_config.min_height = 0;
fsl_dev->drm->mode_config.max_width = 2031;
fsl_dev->drm->mode_config.max_height = 2047;
fsl_dev->drm->mode_config.funcs = &fsl_dcu_drm_mode_config_funcs;
drm_kms_helper_poll_init(fsl_dev->drm);
fsl_dcu_drm_crtc_create(fsl_dev);
fsl_dcu_drm_encoder_create(fsl_dev, &fsl_dev->crtc);
fsl_dcu_drm_connector_create(fsl_dev, &fsl_dev->encoder);
drm_mode_config_reset(fsl_dev->drm);
return 0;
}

33
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_output.h Normal file
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@ -0,0 +1,33 @@
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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.
*/
#ifndef __FSL_DCU_DRM_CONNECTOR_H__
#define __FSL_DCU_DRM_CONNECTOR_H__
struct fsl_dcu_drm_connector {
struct drm_connector base;
struct drm_encoder *encoder;
struct drm_panel *panel;
};
static inline struct fsl_dcu_drm_connector *
to_fsl_dcu_connector(struct drm_connector *con)
{
return con ? container_of(con, struct fsl_dcu_drm_connector, base)
: NULL;
}
int fsl_dcu_drm_connector_create(struct fsl_dcu_drm_device *fsl_dev,
struct drm_encoder *encoder);
int fsl_dcu_drm_encoder_create(struct fsl_dcu_drm_device *fsl_dev,
struct drm_crtc *crtc);
#endif /* __FSL_DCU_DRM_CONNECTOR_H__ */

261
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c Normal file
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@ -0,0 +1,261 @@
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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/regmap.h>
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>
#include "fsl_dcu_drm_drv.h"
#include "fsl_dcu_drm_plane.h"
static int fsl_dcu_drm_plane_index(struct drm_plane *plane)
{
struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
unsigned int total_layer = fsl_dev->soc->total_layer;
unsigned int index;
index = drm_plane_index(plane);
if (index < total_layer)
return total_layer - index - 1;
dev_err(fsl_dev->dev, "No more layer left\n");
return -EINVAL;
}
static int fsl_dcu_drm_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct drm_framebuffer *fb = state->fb;
switch (fb->pixel_format) {
case DRM_FORMAT_RGB565:
case DRM_FORMAT_RGB888:
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_BGRA4444:
case DRM_FORMAT_ARGB1555:
case DRM_FORMAT_YUV422:
return 0;
default:
return -EINVAL;
}
}
static void fsl_dcu_drm_plane_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
unsigned int index, value, ret;
index = fsl_dcu_drm_plane_index(plane);
if (index < 0)
return;
ret = regmap_read(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), &value);
if (ret)
dev_err(fsl_dev->dev, "read DCU_INT_MASK failed\n");
value &= ~DCU_LAYER_EN;
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4), value);
if (ret)
dev_err(fsl_dev->dev, "set DCU register failed\n");
}
static void fsl_dcu_drm_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct fsl_dcu_drm_device *fsl_dev = plane->dev->dev_private;
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = plane->state->fb;
struct drm_gem_cma_object *gem;
unsigned int alpha, bpp;
int index, ret;
if (!fb)
return;
index = fsl_dcu_drm_plane_index(plane);
if (index < 0)
return;
gem = drm_fb_cma_get_gem_obj(fb, 0);
switch (fb->pixel_format) {
case DRM_FORMAT_RGB565:
bpp = FSL_DCU_RGB565;
alpha = 0xff;
break;
case DRM_FORMAT_RGB888:
bpp = FSL_DCU_RGB888;
alpha = 0xff;
break;
case DRM_FORMAT_ARGB8888:
bpp = FSL_DCU_ARGB8888;
alpha = 0xff;
break;
case DRM_FORMAT_BGRA4444:
bpp = FSL_DCU_ARGB4444;
alpha = 0xff;
break;
case DRM_FORMAT_ARGB1555:
bpp = FSL_DCU_ARGB1555;
alpha = 0xff;
break;
case DRM_FORMAT_YUV422:
bpp = FSL_DCU_YUV422;
alpha = 0xff;
break;
default:
return;
}
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 1),
DCU_LAYER_HEIGHT(state->crtc_h) |
DCU_LAYER_WIDTH(state->crtc_w));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 2),
DCU_LAYER_POSY(state->crtc_y) |
DCU_LAYER_POSX(state->crtc_x));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap,
DCU_CTRLDESCLN(index, 3), gem->paddr);
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 4),
DCU_LAYER_EN |
DCU_LAYER_TRANS(alpha) |
DCU_LAYER_BPP(bpp) |
DCU_LAYER_AB(0));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 5),
DCU_LAYER_CKMAX_R(0xFF) |
DCU_LAYER_CKMAX_G(0xFF) |
DCU_LAYER_CKMAX_B(0xFF));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 6),
DCU_LAYER_CKMIN_R(0) |
DCU_LAYER_CKMIN_G(0) |
DCU_LAYER_CKMIN_B(0));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 7), 0);
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 8),
DCU_LAYER_FG_FCOLOR(0));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 9),
DCU_LAYER_BG_BCOLOR(0));
if (ret)
goto set_failed;
if (!strcmp(fsl_dev->soc->name, "ls1021a")) {
ret = regmap_write(fsl_dev->regmap, DCU_CTRLDESCLN(index, 10),
DCU_LAYER_POST_SKIP(0) |
DCU_LAYER_PRE_SKIP(0));
if (ret)
goto set_failed;
}
ret = regmap_update_bits(fsl_dev->regmap, DCU_DCU_MODE,
DCU_MODE_DCU_MODE_MASK,
DCU_MODE_DCU_MODE(DCU_MODE_NORMAL));
if (ret)
goto set_failed;
ret = regmap_write(fsl_dev->regmap,
DCU_UPDATE_MODE, DCU_UPDATE_MODE_READREG);
if (ret)
goto set_failed;
return;
set_failed:
dev_err(fsl_dev->dev, "set DCU register failed\n");
}
static void
fsl_dcu_drm_plane_cleanup_fb(struct drm_plane *plane,
struct drm_framebuffer *fb,
const struct drm_plane_state *new_state)
{
}
static int
fsl_dcu_drm_plane_prepare_fb(struct drm_plane *plane,
struct drm_framebuffer *fb,
const struct drm_plane_state *new_state)
{
return 0;
}
static const struct drm_plane_helper_funcs fsl_dcu_drm_plane_helper_funcs = {
.atomic_check = fsl_dcu_drm_plane_atomic_check,
.atomic_disable = fsl_dcu_drm_plane_atomic_disable,
.atomic_update = fsl_dcu_drm_plane_atomic_update,
.cleanup_fb = fsl_dcu_drm_plane_cleanup_fb,
.prepare_fb = fsl_dcu_drm_plane_prepare_fb,
};
static void fsl_dcu_drm_plane_destroy(struct drm_plane *plane)
{
drm_plane_cleanup(plane);
}
static const struct drm_plane_funcs fsl_dcu_drm_plane_funcs = {
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.destroy = fsl_dcu_drm_plane_destroy,
.disable_plane = drm_atomic_helper_disable_plane,
.reset = drm_atomic_helper_plane_reset,
.update_plane = drm_atomic_helper_update_plane,
};
static const u32 fsl_dcu_drm_plane_formats[] = {
DRM_FORMAT_RGB565,
DRM_FORMAT_RGB888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_ARGB4444,
DRM_FORMAT_ARGB1555,
DRM_FORMAT_YUV422,
};
struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev)
{
struct drm_plane *primary;
int ret;
primary = kzalloc(sizeof(*primary), GFP_KERNEL);
if (!primary) {
DRM_DEBUG_KMS("Failed to allocate primary plane\n");
return NULL;
}
/* possible_crtc's will be filled in later by crtc_init */
ret = drm_universal_plane_init(dev, primary, 0,
&fsl_dcu_drm_plane_funcs,
fsl_dcu_drm_plane_formats,
ARRAY_SIZE(fsl_dcu_drm_plane_formats),
DRM_PLANE_TYPE_PRIMARY);
if (ret) {
kfree(primary);
primary = NULL;
}
drm_plane_helper_add(primary, &fsl_dcu_drm_plane_helper_funcs);
return primary;
}

17
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.h Normal file
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@ -0,0 +1,17 @@
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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.
*/
#ifndef __FSL_DCU_DRM_PLANE_H__
#define __FSL_DCU_DRM_PLANE_H__
struct drm_plane *fsl_dcu_drm_primary_create_plane(struct drm_device *dev);
#endif /* __FSL_DCU_DRM_PLANE_H__ */

182
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c Normal file
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/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* Freescale DCU drm device driver
*
* 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/backlight.h>
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_panel.h>
#include "fsl_dcu_drm_drv.h"
static int
fsl_dcu_drm_encoder_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
return 0;
}
static void fsl_dcu_drm_encoder_disable(struct drm_encoder *encoder)
{
}
static void fsl_dcu_drm_encoder_enable(struct drm_encoder *encoder)
{
}
static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
.atomic_check = fsl_dcu_drm_encoder_atomic_check,
.disable = fsl_dcu_drm_encoder_disable,
.enable = fsl_dcu_drm_encoder_enable,
};
static void fsl_dcu_drm_encoder_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
}
static const struct drm_encoder_funcs encoder_funcs = {
.destroy = fsl_dcu_drm_encoder_destroy,
};
int fsl_dcu_drm_encoder_create(struct fsl_dcu_drm_device *fsl_dev,
struct drm_crtc *crtc)
{
struct drm_encoder *encoder = &fsl_dev->encoder;
int ret;
encoder->possible_crtcs = 1;
ret = drm_encoder_init(fsl_dev->drm, encoder, &encoder_funcs,
DRM_MODE_ENCODER_LVDS);
if (ret < 0)
return ret;
drm_encoder_helper_add(encoder, &encoder_helper_funcs);
return 0;
}
static void fsl_dcu_drm_connector_destroy(struct drm_connector *connector)
{
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
}
static enum drm_connector_status
fsl_dcu_drm_connector_detect(struct drm_connector *connector, bool force)
{
return connector_status_connected;
}
static const struct drm_connector_funcs fsl_dcu_drm_connector_funcs = {
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
.destroy = fsl_dcu_drm_connector_destroy,
.detect = fsl_dcu_drm_connector_detect,
.dpms = drm_atomic_helper_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
.reset = drm_atomic_helper_connector_reset,
};
static struct drm_encoder *
fsl_dcu_drm_connector_best_encoder(struct drm_connector *connector)
{
struct fsl_dcu_drm_connector *fsl_con = to_fsl_dcu_connector(connector);
return fsl_con->encoder;
}
static int fsl_dcu_drm_connector_get_modes(struct drm_connector *connector)
{
struct fsl_dcu_drm_connector *fsl_connector;
int (*get_modes)(struct drm_panel *panel);
int num_modes = 0;
fsl_connector = to_fsl_dcu_connector(connector);
if (fsl_connector->panel && fsl_connector->panel->funcs &&
fsl_connector->panel->funcs->get_modes) {
get_modes = fsl_connector->panel->funcs->get_modes;
num_modes = get_modes(fsl_connector->panel);
}
return num_modes;
}
static int fsl_dcu_drm_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
if (mode->hdisplay & 0xf)
return MODE_ERROR;
return MODE_OK;
}
static const struct drm_connector_helper_funcs connector_helper_funcs = {
.best_encoder = fsl_dcu_drm_connector_best_encoder,
.get_modes = fsl_dcu_drm_connector_get_modes,
.mode_valid = fsl_dcu_drm_connector_mode_valid,
};
int fsl_dcu_drm_connector_create(struct fsl_dcu_drm_device *fsl_dev,
struct drm_encoder *encoder)
{
struct drm_connector *connector = &fsl_dev->connector.base;
struct drm_mode_config mode_config = fsl_dev->drm->mode_config;
struct device_node *panel_node;
int ret;
fsl_dev->connector.encoder = encoder;
ret = drm_connector_init(fsl_dev->drm, connector,
&fsl_dcu_drm_connector_funcs,
DRM_MODE_CONNECTOR_LVDS);
if (ret < 0)
return ret;
drm_connector_helper_add(connector, &connector_helper_funcs);
ret = drm_connector_register(connector);
if (ret < 0)
goto err_cleanup;
ret = drm_mode_connector_attach_encoder(connector, encoder);
if (ret < 0)
goto err_sysfs;
drm_object_property_set_value(&connector->base,
mode_config.dpms_property,
DRM_MODE_DPMS_OFF);
panel_node = of_parse_phandle(fsl_dev->np, "fsl,panel", 0);
if (panel_node) {
fsl_dev->connector.panel = of_drm_find_panel(panel_node);
if (!fsl_dev->connector.panel) {
ret = -EPROBE_DEFER;
goto err_sysfs;
}
of_node_put(panel_node);
}
ret = drm_panel_attach(fsl_dev->connector.panel, connector);
if (ret) {
dev_err(fsl_dev->dev, "failed to attach panel\n");
goto err_sysfs;
}
return 0;
err_sysfs:
drm_connector_unregister(connector);
err_cleanup:
drm_connector_cleanup(connector);
return ret;
}