blob: dec7df35baa9dd063a5fb34f02bea41d1f05e059 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012 Samsung Electronics Co.Ltd
* Authors:
* YoungJun Cho <yj44.cho@samsung.com>
* Eunchul Kim <chulspro.kim@samsung.com>
*/
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/sizes.h>
#include <drm/drm_fourcc.h>
#include <drm/exynos_drm.h>
#include "exynos_drm_drv.h"
#include "exynos_drm_ipp.h"
#include "regs-rotator.h"
/*
* Rotator supports image crop/rotator and input/output DMA operations.
* input DMA reads image data from the memory.
* output DMA writes image data to memory.
*/
#define ROTATOR_AUTOSUSPEND_DELAY 2000
#define rot_read(offset) readl(rot->regs + (offset))
#define rot_write(cfg, offset) writel(cfg, rot->regs + (offset))
enum rot_irq_status {
ROT_IRQ_STATUS_COMPLETE = 8,
ROT_IRQ_STATUS_ILLEGAL = 9,
};
struct rot_variant {
const struct exynos_drm_ipp_formats *formats;
unsigned int num_formats;
};
/*
* A structure of rotator context.
* @ippdrv: prepare initialization using ippdrv.
* @regs: memory mapped io registers.
* @clock: rotator gate clock.
* @limit_tbl: limitation of rotator.
* @irq: irq number.
*/
struct rot_context {
struct exynos_drm_ipp ipp;
struct drm_device *drm_dev;
void *dma_priv;
struct device *dev;
void __iomem *regs;
struct clk *clock;
const struct exynos_drm_ipp_formats *formats;
unsigned int num_formats;
struct exynos_drm_ipp_task *task;
};
static void rotator_reg_set_irq(struct rot_context *rot, bool enable)
{
u32 val = rot_read(ROT_CONFIG);
if (enable == true)
val |= ROT_CONFIG_IRQ;
else
val &= ~ROT_CONFIG_IRQ;
rot_write(val, ROT_CONFIG);
}
static enum rot_irq_status rotator_reg_get_irq_status(struct rot_context *rot)
{
u32 val = rot_read(ROT_STATUS);
val = ROT_STATUS_IRQ(val);
if (val == ROT_STATUS_IRQ_VAL_COMPLETE)
return ROT_IRQ_STATUS_COMPLETE;
return ROT_IRQ_STATUS_ILLEGAL;
}
static irqreturn_t rotator_irq_handler(int irq, void *arg)
{
struct rot_context *rot = arg;
enum rot_irq_status irq_status;
u32 val;
/* Get execution result */
irq_status = rotator_reg_get_irq_status(rot);
/* clear status */
val = rot_read(ROT_STATUS);
val |= ROT_STATUS_IRQ_PENDING((u32)irq_status);
rot_write(val, ROT_STATUS);
if (rot->task) {
struct exynos_drm_ipp_task *task = rot->task;
rot->task = NULL;
pm_runtime_mark_last_busy(rot->dev);
pm_runtime_put_autosuspend(rot->dev);
exynos_drm_ipp_task_done(task,
irq_status == ROT_IRQ_STATUS_COMPLETE ? 0 : -EINVAL);
}
return IRQ_HANDLED;
}
static void rotator_src_set_fmt(struct rot_context *rot, u32 fmt)
{
u32 val;
val = rot_read(ROT_CONTROL);
val &= ~ROT_CONTROL_FMT_MASK;
switch (fmt) {
case DRM_FORMAT_NV12:
val |= ROT_CONTROL_FMT_YCBCR420_2P;
break;
case DRM_FORMAT_XRGB8888:
val |= ROT_CONTROL_FMT_RGB888;
break;
}
rot_write(val, ROT_CONTROL);
}
static void rotator_src_set_buf(struct rot_context *rot,
struct exynos_drm_ipp_buffer *buf)
{
u32 val;
/* Set buffer size configuration */
val = ROT_SET_BUF_SIZE_H(buf->buf.height) |
ROT_SET_BUF_SIZE_W(buf->buf.pitch[0] / buf->format->cpp[0]);
rot_write(val, ROT_SRC_BUF_SIZE);
/* Set crop image position configuration */
val = ROT_CROP_POS_Y(buf->rect.y) | ROT_CROP_POS_X(buf->rect.x);
rot_write(val, ROT_SRC_CROP_POS);
val = ROT_SRC_CROP_SIZE_H(buf->rect.h) |
ROT_SRC_CROP_SIZE_W(buf->rect.w);
rot_write(val, ROT_SRC_CROP_SIZE);
/* Set buffer DMA address */
rot_write(buf->dma_addr[0], ROT_SRC_BUF_ADDR(0));
rot_write(buf->dma_addr[1], ROT_SRC_BUF_ADDR(1));
}
static void rotator_dst_set_transf(struct rot_context *rot,
unsigned int rotation)
{
u32 val;
/* Set transform configuration */
val = rot_read(ROT_CONTROL);
val &= ~ROT_CONTROL_FLIP_MASK;
if (rotation & DRM_MODE_REFLECT_X)
val |= ROT_CONTROL_FLIP_VERTICAL;
if (rotation & DRM_MODE_REFLECT_Y)
val |= ROT_CONTROL_FLIP_HORIZONTAL;
val &= ~ROT_CONTROL_ROT_MASK;
if (rotation & DRM_MODE_ROTATE_90)
val |= ROT_CONTROL_ROT_90;
else if (rotation & DRM_MODE_ROTATE_180)
val |= ROT_CONTROL_ROT_180;
else if (rotation & DRM_MODE_ROTATE_270)
val |= ROT_CONTROL_ROT_270;
rot_write(val, ROT_CONTROL);
}
static void rotator_dst_set_buf(struct rot_context *rot,
struct exynos_drm_ipp_buffer *buf)
{
u32 val;
/* Set buffer size configuration */
val = ROT_SET_BUF_SIZE_H(buf->buf.height) |
ROT_SET_BUF_SIZE_W(buf->buf.pitch[0] / buf->format->cpp[0]);
rot_write(val, ROT_DST_BUF_SIZE);
/* Set crop image position configuration */
val = ROT_CROP_POS_Y(buf->rect.y) | ROT_CROP_POS_X(buf->rect.x);
rot_write(val, ROT_DST_CROP_POS);
/* Set buffer DMA address */
rot_write(buf->dma_addr[0], ROT_DST_BUF_ADDR(0));
rot_write(buf->dma_addr[1], ROT_DST_BUF_ADDR(1));
}
static void rotator_start(struct rot_context *rot)
{
u32 val;
/* Set interrupt enable */
rotator_reg_set_irq(rot, true);
val = rot_read(ROT_CONTROL);
val |= ROT_CONTROL_START;
rot_write(val, ROT_CONTROL);
}
static int rotator_commit(struct exynos_drm_ipp *ipp,
struct exynos_drm_ipp_task *task)
{
struct rot_context *rot =
container_of(ipp, struct rot_context, ipp);
int ret;
ret = pm_runtime_resume_and_get(rot->dev);
if (ret < 0) {
dev_err(rot->dev, "failed to enable ROTATOR device.\n");
return ret;
}
rot->task = task;
rotator_src_set_fmt(rot, task->src.buf.fourcc);
rotator_src_set_buf(rot, &task->src);
rotator_dst_set_transf(rot, task->transform.rotation);
rotator_dst_set_buf(rot, &task->dst);
rotator_start(rot);
return 0;
}
static const struct exynos_drm_ipp_funcs ipp_funcs = {
.commit = rotator_commit,
};
static int rotator_bind(struct device *dev, struct device *master, void *data)
{
struct rot_context *rot = dev_get_drvdata(dev);
struct drm_device *drm_dev = data;
struct exynos_drm_ipp *ipp = &rot->ipp;
rot->drm_dev = drm_dev;
ipp->drm_dev = drm_dev;
exynos_drm_register_dma(drm_dev, dev, &rot->dma_priv);
exynos_drm_ipp_register(dev, ipp, &ipp_funcs,
DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE,
rot->formats, rot->num_formats, "rotator");
dev_info(dev, "The exynos rotator has been probed successfully\n");
return 0;
}
static void rotator_unbind(struct device *dev, struct device *master,
void *data)
{
struct rot_context *rot = dev_get_drvdata(dev);
struct exynos_drm_ipp *ipp = &rot->ipp;
exynos_drm_ipp_unregister(dev, ipp);
exynos_drm_unregister_dma(rot->drm_dev, rot->dev, &rot->dma_priv);
}
static const struct component_ops rotator_component_ops = {
.bind = rotator_bind,
.unbind = rotator_unbind,
};
static int rotator_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rot_context *rot;
const struct rot_variant *variant;
int irq;
int ret;
rot = devm_kzalloc(dev, sizeof(*rot), GFP_KERNEL);
if (!rot)
return -ENOMEM;
variant = of_device_get_match_data(dev);
rot->formats = variant->formats;
rot->num_formats = variant->num_formats;
rot->dev = dev;
rot->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(rot->regs))
return PTR_ERR(rot->regs);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
ret = devm_request_irq(dev, irq, rotator_irq_handler, 0, dev_name(dev),
rot);
if (ret < 0) {
dev_err(dev, "failed to request irq\n");
return ret;
}
rot->clock = devm_clk_get(dev, "rotator");
if (IS_ERR(rot->clock)) {
dev_err(dev, "failed to get clock\n");
return PTR_ERR(rot->clock);
}
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, ROTATOR_AUTOSUSPEND_DELAY);
pm_runtime_enable(dev);
platform_set_drvdata(pdev, rot);
ret = component_add(dev, &rotator_component_ops);
if (ret)
goto err_component;
return 0;
err_component:
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
return ret;
}
static int rotator_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
component_del(dev, &rotator_component_ops);
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
return 0;
}
#ifdef CONFIG_PM
static int rotator_runtime_suspend(struct device *dev)
{
struct rot_context *rot = dev_get_drvdata(dev);
clk_disable_unprepare(rot->clock);
return 0;
}
static int rotator_runtime_resume(struct device *dev)
{
struct rot_context *rot = dev_get_drvdata(dev);
return clk_prepare_enable(rot->clock);
}
#endif
static const struct drm_exynos_ipp_limit rotator_s5pv210_rbg888_limits[] = {
{ IPP_SIZE_LIMIT(BUFFER, .h = { 8, SZ_16K }, .v = { 8, SZ_16K }) },
{ IPP_SIZE_LIMIT(AREA, .h.align = 2, .v.align = 2) },
};
static const struct drm_exynos_ipp_limit rotator_4210_rbg888_limits[] = {
{ IPP_SIZE_LIMIT(BUFFER, .h = { 8, SZ_16K }, .v = { 8, SZ_16K }) },
{ IPP_SIZE_LIMIT(AREA, .h.align = 4, .v.align = 4) },
};
static const struct drm_exynos_ipp_limit rotator_4412_rbg888_limits[] = {
{ IPP_SIZE_LIMIT(BUFFER, .h = { 8, SZ_8K }, .v = { 8, SZ_8K }) },
{ IPP_SIZE_LIMIT(AREA, .h.align = 4, .v.align = 4) },
};
static const struct drm_exynos_ipp_limit rotator_5250_rbg888_limits[] = {
{ IPP_SIZE_LIMIT(BUFFER, .h = { 8, SZ_8K }, .v = { 8, SZ_8K }) },
{ IPP_SIZE_LIMIT(AREA, .h.align = 2, .v.align = 2) },
};
static const struct drm_exynos_ipp_limit rotator_s5pv210_yuv_limits[] = {
{ IPP_SIZE_LIMIT(BUFFER, .h = { 32, SZ_64K }, .v = { 32, SZ_64K }) },
{ IPP_SIZE_LIMIT(AREA, .h.align = 8, .v.align = 8) },
};
static const struct drm_exynos_ipp_limit rotator_4210_yuv_limits[] = {
{ IPP_SIZE_LIMIT(BUFFER, .h = { 32, SZ_64K }, .v = { 32, SZ_64K }) },
{ IPP_SIZE_LIMIT(AREA, .h.align = 8, .v.align = 8) },
};
static const struct drm_exynos_ipp_limit rotator_4412_yuv_limits[] = {
{ IPP_SIZE_LIMIT(BUFFER, .h = { 32, SZ_32K }, .v = { 32, SZ_32K }) },
{ IPP_SIZE_LIMIT(AREA, .h.align = 8, .v.align = 8) },
};
static const struct exynos_drm_ipp_formats rotator_s5pv210_formats[] = {
{ IPP_SRCDST_FORMAT(XRGB8888, rotator_s5pv210_rbg888_limits) },
{ IPP_SRCDST_FORMAT(NV12, rotator_s5pv210_yuv_limits) },
};
static const struct exynos_drm_ipp_formats rotator_4210_formats[] = {
{ IPP_SRCDST_FORMAT(XRGB8888, rotator_4210_rbg888_limits) },
{ IPP_SRCDST_FORMAT(NV12, rotator_4210_yuv_limits) },
};
static const struct exynos_drm_ipp_formats rotator_4412_formats[] = {
{ IPP_SRCDST_FORMAT(XRGB8888, rotator_4412_rbg888_limits) },
{ IPP_SRCDST_FORMAT(NV12, rotator_4412_yuv_limits) },
};
static const struct exynos_drm_ipp_formats rotator_5250_formats[] = {
{ IPP_SRCDST_FORMAT(XRGB8888, rotator_5250_rbg888_limits) },
{ IPP_SRCDST_FORMAT(NV12, rotator_4412_yuv_limits) },
};
static const struct rot_variant rotator_s5pv210_data = {
.formats = rotator_s5pv210_formats,
.num_formats = ARRAY_SIZE(rotator_s5pv210_formats),
};
static const struct rot_variant rotator_4210_data = {
.formats = rotator_4210_formats,
.num_formats = ARRAY_SIZE(rotator_4210_formats),
};
static const struct rot_variant rotator_4412_data = {
.formats = rotator_4412_formats,
.num_formats = ARRAY_SIZE(rotator_4412_formats),
};
static const struct rot_variant rotator_5250_data = {
.formats = rotator_5250_formats,
.num_formats = ARRAY_SIZE(rotator_5250_formats),
};
static const struct of_device_id exynos_rotator_match[] = {
{
.compatible = "samsung,s5pv210-rotator",
.data = &rotator_s5pv210_data,
}, {
.compatible = "samsung,exynos4210-rotator",
.data = &rotator_4210_data,
}, {
.compatible = "samsung,exynos4212-rotator",
.data = &rotator_4412_data,
}, {
.compatible = "samsung,exynos5250-rotator",
.data = &rotator_5250_data,
}, {
},
};
MODULE_DEVICE_TABLE(of, exynos_rotator_match);
static const struct dev_pm_ops rotator_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
SET_RUNTIME_PM_OPS(rotator_runtime_suspend, rotator_runtime_resume,
NULL)
};
struct platform_driver rotator_driver = {
.probe = rotator_probe,
.remove = rotator_remove,
.driver = {
.name = "exynos-rotator",
.owner = THIS_MODULE,
.pm = &rotator_pm_ops,
.of_match_table = exynos_rotator_match,
},
};