This patch adapts Exynos DRM rotator driver to new IPP v2 core API.
The side effect of this conversion is a switch to driver component API
to register properly in the Exynos DRM core.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/Kconfig | 2 +-
drivers/gpu/drm/exynos/exynos_drm_drv.c | 1 +
drivers/gpu/drm/exynos/exynos_drm_rotator.c | 1274 +++++++------------
3 files changed, 448 insertions(+), 829 deletions(-)
rewrite drivers/gpu/drm/exynos/exynos_drm_rotator.c (72%)
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
index 1afe3c6e04df..f8eca59868b3 100644
--- a/drivers/gpu/drm/exynos/Kconfig
+++ b/drivers/gpu/drm/exynos/Kconfig
@@ -106,7 +106,7 @@ config DRM_EXYNOS_FIMC
config DRM_EXYNOS_ROTATOR
bool "Rotator"
- depends on BROKEN
+ select DRM_EXYNOS_IPP
help
Choose this option if you want to use Exynos Rotator for DRM.
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 3b7b7e07ff4b..774220696bde 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -243,6 +243,7 @@ static struct exynos_drm_driver_info exynos_drm_drivers[] = {
DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
}, {
DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
+ DRM_COMPONENT_DRIVER
}, {
DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
}, {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_rotator.c b/drivers/gpu/drm/exynos/exynos_drm_rotator.c
dissimilarity index 72%
index 79282a820ecc..1a76dd3d52e1 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_rotator.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_rotator.c
@@ -1,828 +1,446 @@
-/*
- * Copyright (C) 2012 Samsung Electronics Co.Ltd
- * Authors:
- * YoungJun Cho <yj44.cho@xxxxxxxxxxx>
- * Eunchul Kim <chulspro.kim@xxxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundationr
- */
-
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/of_device.h>
-#include <linux/pm_runtime.h>
-
-#include <drm/drmP.h>
-#include <drm/exynos_drm.h>
-#include "regs-rotator.h"
-#include "exynos_drm_drv.h"
-#include "exynos_drm_ipp.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.
- *
- * M2M operation : supports crop/scale/rotation/csc so on.
- * Memory ----> Rotator H/W ----> Memory.
- */
-
-/*
- * TODO
- * 1. check suspend/resume api if needed.
- * 2. need to check use case platform_device_id.
- * 3. check src/dst size with, height.
- * 4. need to add supported list in prop_list.
- */
-
-#define get_rot_context(dev) platform_get_drvdata(to_platform_device(dev))
-#define get_ctx_from_ippdrv(ippdrv) container_of(ippdrv,\
- struct rot_context, ippdrv);
-#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,
-};
-
-/*
- * A structure of limitation.
- *
- * @min_w: minimum width.
- * @min_h: minimum height.
- * @max_w: maximum width.
- * @max_h: maximum height.
- * @align: align size.
- */
-struct rot_limit {
- u32 min_w;
- u32 min_h;
- u32 max_w;
- u32 max_h;
- u32 align;
-};
-
-/*
- * A structure of limitation table.
- *
- * @ycbcr420_2p: case of YUV.
- * @rgb888: case of RGB.
- */
-struct rot_limit_table {
- struct rot_limit ycbcr420_2p;
- struct rot_limit rgb888;
-};
-
-/*
- * A structure of rotator context.
- * @ippdrv: prepare initialization using ippdrv.
- * @regs_res: register resources.
- * @regs: memory mapped io registers.
- * @clock: rotator gate clock.
- * @limit_tbl: limitation of rotator.
- * @irq: irq number.
- * @cur_buf_id: current operation buffer id.
- * @suspended: suspended state.
- */
-struct rot_context {
- struct exynos_drm_ippdrv ippdrv;
- struct resource *regs_res;
- void __iomem *regs;
- struct clk *clock;
- struct rot_limit_table *limit_tbl;
- int irq;
- int cur_buf_id[EXYNOS_DRM_OPS_MAX];
- bool suspended;
-};
-
-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 u32 rotator_reg_get_fmt(struct rot_context *rot)
-{
- u32 val = rot_read(ROT_CONTROL);
-
- val &= ROT_CONTROL_FMT_MASK;
-
- return val;
-}
-
-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;
- struct exynos_drm_ippdrv *ippdrv = &rot->ippdrv;
- struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
- struct drm_exynos_ipp_event_work *event_work = c_node->event_work;
- 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 (irq_status == ROT_IRQ_STATUS_COMPLETE) {
- event_work->ippdrv = ippdrv;
- event_work->buf_id[EXYNOS_DRM_OPS_DST] =
- rot->cur_buf_id[EXYNOS_DRM_OPS_DST];
- queue_work(ippdrv->event_workq, &event_work->work);
- } else {
- DRM_ERROR("the SFR is set illegally\n");
- }
-
- return IRQ_HANDLED;
-}
-
-static void rotator_align_size(struct rot_context *rot, u32 fmt, u32 *hsize,
- u32 *vsize)
-{
- struct rot_limit_table *limit_tbl = rot->limit_tbl;
- struct rot_limit *limit;
- u32 mask, val;
-
- /* Get size limit */
- if (fmt == ROT_CONTROL_FMT_RGB888)
- limit = &limit_tbl->rgb888;
- else
- limit = &limit_tbl->ycbcr420_2p;
-
- /* Get mask for rounding to nearest aligned val */
- mask = ~((1 << limit->align) - 1);
-
- /* Set aligned width */
- val = ROT_ALIGN(*hsize, limit->align, mask);
- if (val < limit->min_w)
- *hsize = ROT_MIN(limit->min_w, mask);
- else if (val > limit->max_w)
- *hsize = ROT_MAX(limit->max_w, mask);
- else
- *hsize = val;
-
- /* Set aligned height */
- val = ROT_ALIGN(*vsize, limit->align, mask);
- if (val < limit->min_h)
- *vsize = ROT_MIN(limit->min_h, mask);
- else if (val > limit->max_h)
- *vsize = ROT_MAX(limit->max_h, mask);
- else
- *vsize = val;
-}
-
-static int rotator_src_set_fmt(struct device *dev, u32 fmt)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
- 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;
- default:
- DRM_ERROR("invalid image format\n");
- return -EINVAL;
- }
-
- rot_write(val, ROT_CONTROL);
-
- return 0;
-}
-
-static inline bool rotator_check_reg_fmt(u32 fmt)
-{
- if ((fmt == ROT_CONTROL_FMT_YCBCR420_2P) ||
- (fmt == ROT_CONTROL_FMT_RGB888))
- return true;
-
- return false;
-}
-
-static int rotator_src_set_size(struct device *dev, int swap,
- struct drm_exynos_pos *pos,
- struct drm_exynos_sz *sz)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
- u32 fmt, hsize, vsize;
- u32 val;
-
- /* Get format */
- fmt = rotator_reg_get_fmt(rot);
- if (!rotator_check_reg_fmt(fmt)) {
- DRM_ERROR("invalid format.\n");
- return -EINVAL;
- }
-
- /* Align buffer size */
- hsize = sz->hsize;
- vsize = sz->vsize;
- rotator_align_size(rot, fmt, &hsize, &vsize);
-
- /* Set buffer size configuration */
- val = ROT_SET_BUF_SIZE_H(vsize) | ROT_SET_BUF_SIZE_W(hsize);
- rot_write(val, ROT_SRC_BUF_SIZE);
-
- /* Set crop image position configuration */
- val = ROT_CROP_POS_Y(pos->y) | ROT_CROP_POS_X(pos->x);
- rot_write(val, ROT_SRC_CROP_POS);
- val = ROT_SRC_CROP_SIZE_H(pos->h) | ROT_SRC_CROP_SIZE_W(pos->w);
- rot_write(val, ROT_SRC_CROP_SIZE);
-
- return 0;
-}
-
-static int rotator_src_set_addr(struct device *dev,
- struct drm_exynos_ipp_buf_info *buf_info,
- u32 buf_id, enum drm_exynos_ipp_buf_type buf_type)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
- dma_addr_t addr[EXYNOS_DRM_PLANAR_MAX];
- u32 val, fmt, hsize, vsize;
- int i;
-
- /* Set current buf_id */
- rot->cur_buf_id[EXYNOS_DRM_OPS_SRC] = buf_id;
-
- switch (buf_type) {
- case IPP_BUF_ENQUEUE:
- /* Set address configuration */
- for_each_ipp_planar(i)
- addr[i] = buf_info->base[i];
-
- /* Get format */
- fmt = rotator_reg_get_fmt(rot);
- if (!rotator_check_reg_fmt(fmt)) {
- DRM_ERROR("invalid format.\n");
- return -EINVAL;
- }
-
- /* Re-set cb planar for NV12 format */
- if ((fmt == ROT_CONTROL_FMT_YCBCR420_2P) &&
- !addr[EXYNOS_DRM_PLANAR_CB]) {
-
- val = rot_read(ROT_SRC_BUF_SIZE);
- hsize = ROT_GET_BUF_SIZE_W(val);
- vsize = ROT_GET_BUF_SIZE_H(val);
-
- /* Set cb planar */
- addr[EXYNOS_DRM_PLANAR_CB] =
- addr[EXYNOS_DRM_PLANAR_Y] + hsize * vsize;
- }
-
- for_each_ipp_planar(i)
- rot_write(addr[i], ROT_SRC_BUF_ADDR(i));
- break;
- case IPP_BUF_DEQUEUE:
- for_each_ipp_planar(i)
- rot_write(0x0, ROT_SRC_BUF_ADDR(i));
- break;
- default:
- /* Nothing to do */
- break;
- }
-
- return 0;
-}
-
-static int rotator_dst_set_transf(struct device *dev,
- enum drm_exynos_degree degree,
- enum drm_exynos_flip flip, bool *swap)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
- u32 val;
-
- /* Set transform configuration */
- val = rot_read(ROT_CONTROL);
- val &= ~ROT_CONTROL_FLIP_MASK;
-
- switch (flip) {
- case EXYNOS_DRM_FLIP_VERTICAL:
- val |= ROT_CONTROL_FLIP_VERTICAL;
- break;
- case EXYNOS_DRM_FLIP_HORIZONTAL:
- val |= ROT_CONTROL_FLIP_HORIZONTAL;
- break;
- default:
- /* Flip None */
- break;
- }
-
- val &= ~ROT_CONTROL_ROT_MASK;
-
- switch (degree) {
- case EXYNOS_DRM_DEGREE_90:
- val |= ROT_CONTROL_ROT_90;
- break;
- case EXYNOS_DRM_DEGREE_180:
- val |= ROT_CONTROL_ROT_180;
- break;
- case EXYNOS_DRM_DEGREE_270:
- val |= ROT_CONTROL_ROT_270;
- break;
- default:
- /* Rotation 0 Degree */
- break;
- }
-
- rot_write(val, ROT_CONTROL);
-
- /* Check degree for setting buffer size swap */
- if ((degree == EXYNOS_DRM_DEGREE_90) ||
- (degree == EXYNOS_DRM_DEGREE_270))
- *swap = true;
- else
- *swap = false;
-
- return 0;
-}
-
-static int rotator_dst_set_size(struct device *dev, int swap,
- struct drm_exynos_pos *pos,
- struct drm_exynos_sz *sz)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
- u32 val, fmt, hsize, vsize;
-
- /* Get format */
- fmt = rotator_reg_get_fmt(rot);
- if (!rotator_check_reg_fmt(fmt)) {
- DRM_ERROR("invalid format.\n");
- return -EINVAL;
- }
-
- /* Align buffer size */
- hsize = sz->hsize;
- vsize = sz->vsize;
- rotator_align_size(rot, fmt, &hsize, &vsize);
-
- /* Set buffer size configuration */
- val = ROT_SET_BUF_SIZE_H(vsize) | ROT_SET_BUF_SIZE_W(hsize);
- rot_write(val, ROT_DST_BUF_SIZE);
-
- /* Set crop image position configuration */
- val = ROT_CROP_POS_Y(pos->y) | ROT_CROP_POS_X(pos->x);
- rot_write(val, ROT_DST_CROP_POS);
-
- return 0;
-}
-
-static int rotator_dst_set_addr(struct device *dev,
- struct drm_exynos_ipp_buf_info *buf_info,
- u32 buf_id, enum drm_exynos_ipp_buf_type buf_type)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
- dma_addr_t addr[EXYNOS_DRM_PLANAR_MAX];
- u32 val, fmt, hsize, vsize;
- int i;
-
- /* Set current buf_id */
- rot->cur_buf_id[EXYNOS_DRM_OPS_DST] = buf_id;
-
- switch (buf_type) {
- case IPP_BUF_ENQUEUE:
- /* Set address configuration */
- for_each_ipp_planar(i)
- addr[i] = buf_info->base[i];
-
- /* Get format */
- fmt = rotator_reg_get_fmt(rot);
- if (!rotator_check_reg_fmt(fmt)) {
- DRM_ERROR("invalid format.\n");
- return -EINVAL;
- }
-
- /* Re-set cb planar for NV12 format */
- if ((fmt == ROT_CONTROL_FMT_YCBCR420_2P) &&
- !addr[EXYNOS_DRM_PLANAR_CB]) {
- /* Get buf size */
- val = rot_read(ROT_DST_BUF_SIZE);
-
- hsize = ROT_GET_BUF_SIZE_W(val);
- vsize = ROT_GET_BUF_SIZE_H(val);
-
- /* Set cb planar */
- addr[EXYNOS_DRM_PLANAR_CB] =
- addr[EXYNOS_DRM_PLANAR_Y] + hsize * vsize;
- }
-
- for_each_ipp_planar(i)
- rot_write(addr[i], ROT_DST_BUF_ADDR(i));
- break;
- case IPP_BUF_DEQUEUE:
- for_each_ipp_planar(i)
- rot_write(0x0, ROT_DST_BUF_ADDR(i));
- break;
- default:
- /* Nothing to do */
- break;
- }
-
- return 0;
-}
-
-static struct exynos_drm_ipp_ops rot_src_ops = {
- .set_fmt = rotator_src_set_fmt,
- .set_size = rotator_src_set_size,
- .set_addr = rotator_src_set_addr,
-};
-
-static struct exynos_drm_ipp_ops rot_dst_ops = {
- .set_transf = rotator_dst_set_transf,
- .set_size = rotator_dst_set_size,
- .set_addr = rotator_dst_set_addr,
-};
-
-static int rotator_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
-{
- struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list;
-
- prop_list->version = 1;
- prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) |
- (1 << EXYNOS_DRM_FLIP_HORIZONTAL);
- prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) |
- (1 << EXYNOS_DRM_DEGREE_90) |
- (1 << EXYNOS_DRM_DEGREE_180) |
- (1 << EXYNOS_DRM_DEGREE_270);
- prop_list->csc = 0;
- prop_list->crop = 0;
- prop_list->scale = 0;
-
- return 0;
-}
-
-static inline bool rotator_check_drm_fmt(u32 fmt)
-{
- switch (fmt) {
- case DRM_FORMAT_XRGB8888:
- case DRM_FORMAT_NV12:
- return true;
- default:
- DRM_DEBUG_KMS("not support format\n");
- return false;
- }
-}
-
-static inline bool rotator_check_drm_flip(enum drm_exynos_flip flip)
-{
- switch (flip) {
- case EXYNOS_DRM_FLIP_NONE:
- case EXYNOS_DRM_FLIP_VERTICAL:
- case EXYNOS_DRM_FLIP_HORIZONTAL:
- case EXYNOS_DRM_FLIP_BOTH:
- return true;
- default:
- DRM_DEBUG_KMS("invalid flip\n");
- return false;
- }
-}
-
-static int rotator_ippdrv_check_property(struct device *dev,
- struct drm_exynos_ipp_property *property)
-{
- struct drm_exynos_ipp_config *src_config =
- &property->config[EXYNOS_DRM_OPS_SRC];
- struct drm_exynos_ipp_config *dst_config =
- &property->config[EXYNOS_DRM_OPS_DST];
- struct drm_exynos_pos *src_pos = &src_config->pos;
- struct drm_exynos_pos *dst_pos = &dst_config->pos;
- struct drm_exynos_sz *src_sz = &src_config->sz;
- struct drm_exynos_sz *dst_sz = &dst_config->sz;
- bool swap = false;
-
- /* Check format configuration */
- if (src_config->fmt != dst_config->fmt) {
- DRM_DEBUG_KMS("not support csc feature\n");
- return -EINVAL;
- }
-
- if (!rotator_check_drm_fmt(dst_config->fmt)) {
- DRM_DEBUG_KMS("invalid format\n");
- return -EINVAL;
- }
-
- /* Check transform configuration */
- if (src_config->degree != EXYNOS_DRM_DEGREE_0) {
- DRM_DEBUG_KMS("not support source-side rotation\n");
- return -EINVAL;
- }
-
- switch (dst_config->degree) {
- case EXYNOS_DRM_DEGREE_90:
- case EXYNOS_DRM_DEGREE_270:
- swap = true;
- case EXYNOS_DRM_DEGREE_0:
- case EXYNOS_DRM_DEGREE_180:
- /* No problem */
- break;
- default:
- DRM_DEBUG_KMS("invalid degree\n");
- return -EINVAL;
- }
-
- if (src_config->flip != EXYNOS_DRM_FLIP_NONE) {
- DRM_DEBUG_KMS("not support source-side flip\n");
- return -EINVAL;
- }
-
- if (!rotator_check_drm_flip(dst_config->flip)) {
- DRM_DEBUG_KMS("invalid flip\n");
- return -EINVAL;
- }
-
- /* Check size configuration */
- if ((src_pos->x + src_pos->w > src_sz->hsize) ||
- (src_pos->y + src_pos->h > src_sz->vsize)) {
- DRM_DEBUG_KMS("out of source buffer bound\n");
- return -EINVAL;
- }
-
- if (swap) {
- if ((dst_pos->x + dst_pos->h > dst_sz->vsize) ||
- (dst_pos->y + dst_pos->w > dst_sz->hsize)) {
- DRM_DEBUG_KMS("out of destination buffer bound\n");
- return -EINVAL;
- }
-
- if ((src_pos->w != dst_pos->h) || (src_pos->h != dst_pos->w)) {
- DRM_DEBUG_KMS("not support scale feature\n");
- return -EINVAL;
- }
- } else {
- if ((dst_pos->x + dst_pos->w > dst_sz->hsize) ||
- (dst_pos->y + dst_pos->h > dst_sz->vsize)) {
- DRM_DEBUG_KMS("out of destination buffer bound\n");
- return -EINVAL;
- }
-
- if ((src_pos->w != dst_pos->w) || (src_pos->h != dst_pos->h)) {
- DRM_DEBUG_KMS("not support scale feature\n");
- return -EINVAL;
- }
- }
-
- return 0;
-}
-
-static int rotator_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
- u32 val;
-
- if (rot->suspended) {
- DRM_ERROR("suspended state\n");
- return -EPERM;
- }
-
- if (cmd != IPP_CMD_M2M) {
- DRM_ERROR("not support cmd: %d\n", cmd);
- return -EINVAL;
- }
-
- /* Set interrupt enable */
- rotator_reg_set_irq(rot, true);
-
- val = rot_read(ROT_CONTROL);
- val |= ROT_CONTROL_START;
-
- rot_write(val, ROT_CONTROL);
-
- return 0;
-}
-
-static struct rot_limit_table rot_limit_tbl_4210 = {
- .ycbcr420_2p = {
- .min_w = 32,
- .min_h = 32,
- .max_w = SZ_64K,
- .max_h = SZ_64K,
- .align = 3,
- },
- .rgb888 = {
- .min_w = 8,
- .min_h = 8,
- .max_w = SZ_16K,
- .max_h = SZ_16K,
- .align = 2,
- },
-};
-
-static struct rot_limit_table rot_limit_tbl_4x12 = {
- .ycbcr420_2p = {
- .min_w = 32,
- .min_h = 32,
- .max_w = SZ_32K,
- .max_h = SZ_32K,
- .align = 3,
- },
- .rgb888 = {
- .min_w = 8,
- .min_h = 8,
- .max_w = SZ_8K,
- .max_h = SZ_8K,
- .align = 2,
- },
-};
-
-static struct rot_limit_table rot_limit_tbl_5250 = {
- .ycbcr420_2p = {
- .min_w = 32,
- .min_h = 32,
- .max_w = SZ_32K,
- .max_h = SZ_32K,
- .align = 3,
- },
- .rgb888 = {
- .min_w = 8,
- .min_h = 8,
- .max_w = SZ_8K,
- .max_h = SZ_8K,
- .align = 1,
- },
-};
-
-static const struct of_device_id exynos_rotator_match[] = {
- {
- .compatible = "samsung,exynos4210-rotator",
- .data = &rot_limit_tbl_4210,
- },
- {
- .compatible = "samsung,exynos4212-rotator",
- .data = &rot_limit_tbl_4x12,
- },
- {
- .compatible = "samsung,exynos5250-rotator",
- .data = &rot_limit_tbl_5250,
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, exynos_rotator_match);
-
-static int rotator_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct rot_context *rot;
- struct exynos_drm_ippdrv *ippdrv;
- int ret;
-
- if (!dev->of_node) {
- dev_err(dev, "cannot find of_node.\n");
- return -ENODEV;
- }
-
- rot = devm_kzalloc(dev, sizeof(*rot), GFP_KERNEL);
- if (!rot)
- return -ENOMEM;
-
- rot->limit_tbl = (struct rot_limit_table *)
- of_device_get_match_data(dev);
- rot->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- rot->regs = devm_ioremap_resource(dev, rot->regs_res);
- if (IS_ERR(rot->regs))
- return PTR_ERR(rot->regs);
-
- rot->irq = platform_get_irq(pdev, 0);
- if (rot->irq < 0) {
- dev_err(dev, "failed to get irq\n");
- return rot->irq;
- }
-
- ret = devm_request_threaded_irq(dev, rot->irq, NULL,
- rotator_irq_handler, IRQF_ONESHOT, "drm_rotator", 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_enable(dev);
-
- ippdrv = &rot->ippdrv;
- ippdrv->dev = dev;
- ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &rot_src_ops;
- ippdrv->ops[EXYNOS_DRM_OPS_DST] = &rot_dst_ops;
- ippdrv->check_property = rotator_ippdrv_check_property;
- ippdrv->start = rotator_ippdrv_start;
- ret = rotator_init_prop_list(ippdrv);
- if (ret < 0) {
- dev_err(dev, "failed to init property list.\n");
- goto err_ippdrv_register;
- }
-
- DRM_DEBUG_KMS("ippdrv[%pK]\n", ippdrv);
-
- platform_set_drvdata(pdev, rot);
-
- ret = exynos_drm_ippdrv_register(ippdrv);
- if (ret < 0) {
- dev_err(dev, "failed to register drm rotator device\n");
- goto err_ippdrv_register;
- }
-
- dev_info(dev, "The exynos rotator is probed successfully\n");
-
- return 0;
-
-err_ippdrv_register:
- pm_runtime_disable(dev);
- return ret;
-}
-
-static int rotator_remove(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct rot_context *rot = dev_get_drvdata(dev);
- struct exynos_drm_ippdrv *ippdrv = &rot->ippdrv;
-
- exynos_drm_ippdrv_unregister(ippdrv);
-
- pm_runtime_disable(dev);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int rotator_clk_crtl(struct rot_context *rot, bool enable)
-{
- if (enable) {
- clk_prepare_enable(rot->clock);
- rot->suspended = false;
- } else {
- clk_disable_unprepare(rot->clock);
- rot->suspended = true;
- }
-
- return 0;
-}
-
-static int rotator_runtime_suspend(struct device *dev)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
-
- return rotator_clk_crtl(rot, false);
-}
-
-static int rotator_runtime_resume(struct device *dev)
-{
- struct rot_context *rot = dev_get_drvdata(dev);
-
- return rotator_clk_crtl(rot, true);
-}
-#endif
-
-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-rot",
- .owner = THIS_MODULE,
- .pm = &rotator_pm_ops,
- .of_match_table = exynos_rotator_match,
- },
-};
+/*
+ * Copyright (C) 2012 Samsung Electronics Co.Ltd
+ * Authors:
+ * YoungJun Cho <yj44.cho@xxxxxxxxxxx>
+ * Eunchul Kim <chulspro.kim@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundationr
+ */
+
+#include <linux/kernel.h>
+#include <linux/component.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+
+#include <drm/drmP.h>
+#include <drm/exynos_drm.h>
+#include "regs-rotator.h"
+#include "exynos_drm_drv.h"
+#include "exynos_drm_iommu.h"
+#include "exynos_drm_ipp.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;
+ 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_HORIZONTAL;
+ if (rotation & DRM_MODE_REFLECT_Y)
+ val |= ROT_CONTROL_FLIP_VERTICAL;
+
+ 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);
+
+ pm_runtime_get_sync(rot->dev);
+ 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;
+ drm_iommu_attach_device(drm_dev, dev);
+
+ exynos_drm_ipp_register(drm_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 drm_device *drm_dev = data;
+ struct exynos_drm_ipp *ipp = &rot->ipp;
+
+ exynos_drm_ipp_unregister(drm_dev, ipp);
+ drm_iommu_detach_device(rot->drm_dev, rot->dev);
+}
+
+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 resource *regs_res;
+ 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;
+ regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ rot->regs = devm_ioremap_resource(dev, regs_res);
+ if (IS_ERR(rot->regs))
+ return PTR_ERR(rot->regs);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(dev, "failed to get irq\n");
+ 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_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_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_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_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,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,
+ },
+};
--
2.17.0
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