RE: [RFC v3 4/5] drm/exynos: add rotator ipp driver

-----Original Message----- From: Eunchul Kim [mailto:chulspro.kim@samsung.com] Sent: Wednesday, December 12, 2012 4:35 PM To: dri-devel@lists.freedesktop.org; inki.dae@samsung.com Cc: jy0.jeon@samsung.com; yj44.cho@samsung.com; jmock.shin@samsung.com; jaejoon.seo@samsung.com; kyungmin.park@samsung.com; chulspro.kim@samsung.com Subject: [RFC v3 4/5] drm/exynos: add rotator ipp driver

Rotator supports rotation/crop/flip and input/output DMA operations Rotator ipp driver supports 90,180,270 degree rotaion and vertical, horizontal flip. and has some limitations(source and destination format have to be same, no scaler)

Signed-off-by: Eunchul Kim chulspro.kim@samsung.com Signed-off-by: Youngjun Cho yj44.cho@samsung.com

---

drivers/gpu/drm/exynos/Kconfig | 7 + drivers/gpu/drm/exynos/Makefile | 1 + drivers/gpu/drm/exynos/exynos_drm_drv.c | 15 + drivers/gpu/drm/exynos/exynos_drm_drv.h | 1 + drivers/gpu/drm/exynos/exynos_drm_rotator.c | 829 +++++++++++++++++++++++++++ drivers/gpu/drm/exynos/exynos_drm_rotator.h | 13 + drivers/gpu/drm/exynos/regs-rotator.h | 73 +++ 7 files changed, 939 insertions(+), 0 deletions(-) create mode 100644 drivers/gpu/drm/exynos/exynos_drm_rotator.c create mode 100644 drivers/gpu/drm/exynos/exynos_drm_rotator.h create mode 100644 drivers/gpu/drm/exynos/regs-rotator.h

diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig index 4915ab6..4860835 100644 --- a/drivers/gpu/drm/exynos/Kconfig +++ b/drivers/gpu/drm/exynos/Kconfig @@ -57,3 +57,10 @@ config DRM_EXYNOS_FIMC depends on DRM_EXYNOS_IPP help Choose this option if you want to use Exynos FIMC for DRM.

+config DRM_EXYNOS_ROTATOR

• bool "Exynos DRM Rotator"
• depends on DRM_EXYNOS_IPP
• help

•  Choose this option if you want to use Exynos Rotator for DRM.
  

diff --git a/drivers/gpu/drm/exynos/Makefile b/drivers/gpu/drm/exynos/Makefile index 9710024..3b70668 100644 --- a/drivers/gpu/drm/exynos/Makefile +++ b/drivers/gpu/drm/exynos/Makefile @@ -18,5 +18,6 @@ exynosdrm-$(CONFIG_DRM_EXYNOS_VIDI) += exynos_drm_vidi.o exynosdrm-$(CONFIG_DRM_EXYNOS_G2D) += exynos_drm_g2d.o exynosdrm-$(CONFIG_DRM_EXYNOS_IPP) += exynos_drm_ipp.o exynosdrm-$(CONFIG_DRM_EXYNOS_FIMC) += exynos_drm_fimc.o +exynosdrm-$(CONFIG_DRM_EXYNOS_ROTATOR) += exynos_drm_rotator.o

obj-$(CONFIG_DRM_EXYNOS) += exynosdrm.o diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index 73f02ac..09d884b 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -378,6 +378,12 @@ static int __init exynos_drm_init(void) goto out_fimc; #endif

+#ifdef CONFIG_DRM_EXYNOS_ROTATOR

• ret = platform_driver_register(&rotator_driver);
• if (ret < 0)

• goto out_rotator;
  

+#endif

#ifdef CONFIG_DRM_EXYNOS_IPP ret = platform_driver_register(&ipp_driver); if (ret < 0) @@ -406,6 +412,11 @@ out_drm: out_ipp: #endif

+#ifdef CONFIG_DRM_EXYNOS_ROTATOR

• platform_driver_unregister(&rotator_driver);

+out_rotator: +#endif

#ifdef CONFIG_DRM_EXYNOS_FIMC platform_driver_unregister(&fimc_driver); out_fimc: @@ -451,6 +462,10 @@ static void __exit exynos_drm_exit(void) platform_driver_unregister(&ipp_driver); #endif

+#ifdef CONFIG_DRM_EXYNOS_ROTATOR

• platform_driver_unregister(&rotator_driver);

+#endif

#ifdef CONFIG_DRM_EXYNOS_FIMC platform_driver_unregister(&fimc_driver); #endif diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h index 14f9490..a74e37c 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h @@ -353,5 +353,6 @@ extern struct platform_driver exynos_drm_common_hdmi_driver; extern struct platform_driver vidi_driver; extern struct platform_driver g2d_driver; extern struct platform_driver fimc_driver; +extern struct platform_driver rotator_driver; extern struct platform_driver ipp_driver; #endif diff --git a/drivers/gpu/drm/exynos/exynos_drm_rotator.c b/drivers/gpu/drm/exynos/exynos_drm_rotator.c new file mode 100644 index 0000000..121569c --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_rotator.c @@ -0,0 +1,829 @@ +/*

• • Copyright (C) 2012 Samsung Electronics Co.Ltd
• • Authors:
• • YoungJun Cho yj44.cho@samsung.com
• • Eunchul Kim chulspro.kim@samsung.com
• • 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/module.h> +#include <linux/err.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/pm_runtime.h>

+#include <drm/drmP.h> +#include <drm/exynos_drm.h> +#include "regs-rotator.h" +#include "exynos_drm.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 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_format(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;
  

• else

Remove else.

• 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->cmd;
• 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,
  

• 	(struct work_struct *)event_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 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_format(rot);
• /* 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];
  

Check NULL.

• /* Get format */
  

• fmt = rotator_reg_get_format(rot);
  

• /* Re-set cb planar for NV12 format */
  

• if ((fmt == ROT_CONTROL_FMT_YCBCR420_2P) &&
  

• 			(addr[EXYNOS_DRM_PLANAR_CB] ==
  

0x00)) {

What is 0x00?

• 	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)
  

+{

• 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))
  

• return 1;
  

Correct return type. This function should return 0 or negative.

• else

• return 0;
  

Ditto.

+}

+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_format(rot);

Check if fmt is valid or not.

• /* 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_format(rot);
  

Check if fmt is valid or not.

• /* Re-set cb planar for NV12 format */
  

• if ((fmt == ROT_CONTROL_FMT_YCBCR420_2P) &&
  

• 			(addr[EXYNOS_DRM_PLANAR_CB] ==
  

0x00)) {

• 	/* 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;
• DRM_DEBUG_KMS("%s\n", __func__);
• prop_list = kzalloc(sizeof(*prop_list), GFP_KERNEL);
• if (!prop_list) {

• DRM_ERROR("failed to alloc property list.\n");
  

• return -ENOMEM;
  

• }
• /*ToDo fix support function 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;
• ippdrv->prop_list = prop_list;
• return 0;

+}

+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("%s:not support csc feature\n", __func__);
  

• return -EINVAL;
  

• }
• switch (src_config->fmt) {
• case DRM_FORMAT_XRGB8888:
• case DRM_FORMAT_NV12:

• /* No problem */
  

• break;
  

• default:

• DRM_DEBUG_KMS("%s:not support format\n", __func__);
  

• return -EINVAL;
  

• }

Use macro instead of switch-case. this just checks only format type.

• /* Check transform configuration */
• if (src_config->degree != EXYNOS_DRM_DEGREE_0) {

• DRM_DEBUG_KMS("%s:not support source-side rotation\n",
  

• 						__func__);
  

• 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("%s:invalid degree\n", __func__);
  

• return -EINVAL;
  

• }
• if (src_config->flip != EXYNOS_DRM_FLIP_NONE) {

• DRM_DEBUG_KMS("%s:not support source-side flip\n",
  

__func__);

• return -EINVAL;
  

• }
• switch (dst_config->flip) {
• case EXYNOS_DRM_FLIP_NONE:
• case EXYNOS_DRM_FLIP_VERTICAL:
• case EXYNOS_DRM_FLIP_HORIZONTAL:

• /* No problem */
  

• break;
  

• default:

• DRM_DEBUG_KMS("%s:invalid flip\n", __func__);
  

• return -EINVAL;
  

• }

Use macro instead of switch-case. this just checks only flip type.

• /* 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("%s:out of source buffer bound\n", __func__);
  

• 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("%s:out of destination buffer
  

bound\n",

• 						__func__);
  

• 	return -EINVAL;
  

• }
  

• if ((src_pos->w != dst_pos->h) || (src_pos->h !=
  

dst_pos->w))

{

• 	DRM_DEBUG_KMS("%s:not support scale feature\n",
  

• 						__func__);
  

• 	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("%s:out of destination buffer
  

bound\n",

• 						__func__);
  

• 	return -EINVAL;
  

• }
  

• if ((src_pos->w != dst_pos->w) || (src_pos->h !=
  

dst_pos->h))

{

• 	DRM_DEBUG_KMS("%s:not support scale feature\n",
  

• 						__func__);
  

• 	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 int __devinit rotator_probe(struct platform_device *pdev) +{

• struct device *dev = &pdev->dev;
• struct rot_context *rot;
• struct resource *res;
• struct exynos_drm_ippdrv *ippdrv;
• int ret;
• rot = kzalloc(sizeof(*rot), GFP_KERNEL);
• if (!rot) {

• dev_err(dev, "failed to allocate rot\n");
  

• return -ENOMEM;
  

• }
• rot->limit_tbl = (struct rot_limit_table *)

• 		platform_get_device_id(pdev)->driver_data;
  

• res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
• if (!res) {

• dev_err(dev, "failed to find registers\n");
  

• ret = -ENOENT;
  

• goto err_get_resource;
  

• }
• rot->regs_res = request_mem_region(res->start, resource_size(res),

dev_name(dev));

• if (!rot->regs_res) {

• dev_err(dev, "failed to claim register region\n");
  

• ret = -ENOENT;
  

• goto err_get_resource;
  

• }
• rot->regs = ioremap(res->start, resource_size(res));
• if (!rot->regs) {

• dev_err(dev, "failed to map register\n");
  

• ret = -ENXIO;
  

• goto err_ioremap;
  

• }
• rot->irq = platform_get_irq(pdev, 0);
• if (rot->irq < 0) {

• dev_err(dev, "failed to get irq\n");
  

• ret = rot->irq;
  

• goto err_get_irq;
  

• }
• ret = request_threaded_irq(rot->irq, NULL, rotator_irq_handler,

• 			IRQF_ONESHOT, "drm_rotator", rot);
  

• if (ret < 0) {

• dev_err(dev, "failed to request irq\n");
  

• goto err_get_irq;
  

• }
• rot->clock = clk_get(dev, "rotator");
• if (IS_ERR_OR_NULL(rot->clock)) {

• dev_err(dev, "failed to get clock\n");
  

• ret = PTR_ERR(rot->clock);
  

• goto err_clk_get;
  

• }
• 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("%s:ippdrv[0x%x]\n", __func__, (int)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");
  

• kfree(ippdrv->prop_list);
  

• goto err_ippdrv_register;
  

• }
• dev_info(dev, "The exynos rotator is probed successfully\n");
• return 0;

+err_ippdrv_register:

• pm_runtime_disable(dev);
• clk_put(rot->clock);

+err_clk_get:

• free_irq(rot->irq, rot);

+err_get_irq:

• iounmap(rot->regs);

+err_ioremap:

• release_resource(rot->regs_res);
• kfree(rot->regs_res);

+err_get_resource:

• kfree(rot);
• return ret;

+}

+static int __devexit 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;
• kfree(ippdrv->prop_list);
• exynos_drm_ippdrv_unregister(ippdrv);
• pm_runtime_disable(dev);
• clk_put(rot->clock);
• free_irq(rot->irq, rot);
• iounmap(rot->regs);
• release_resource(rot->regs_res);
• kfree(rot->regs_res);
• kfree(rot);
• return 0;

+}

+struct rot_limit_table rot_limit_tbl = {

• .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,
  

• },

+};

+struct platform_device_id rotator_driver_ids[] = {

• {

• .name		= "exynos-rot",
  

• .driver_data	= (unsigned long)&rot_limit_tbl,
  

• },
• {},

+};

+static int rotator_clk_crtl(struct rot_context *rot, bool enable) +{

• DRM_DEBUG_KMS("%s\n", __func__);
• if (enable) {

• clk_enable(rot->clock);
  

• rot->suspended = false;
  

• } else {

• clk_disable(rot->clock);
  

• rot->suspended = true;
  

• }
• return 0;

+}

+#ifdef CONFIG_PM_SLEEP +static int rotator_suspend(struct device *dev) +{

• struct rot_context *rot = dev_get_drvdata(dev);
• /* ToDo */
• DRM_DEBUG_KMS("%s\n", __func__);
• if (pm_runtime_suspended(dev))

• return 0;
  

• return rotator_clk_crtl(rot, false);

+}

+static int rotator_resume(struct device *dev) +{

• struct rot_context *rot = dev_get_drvdata(dev);
• /* ToDo */
• DRM_DEBUG_KMS("%s\n", __func__);
• if (!pm_runtime_suspended(dev))

• return rotator_clk_crtl(rot, true);
  

• return 0;

+} +#endif

+#ifdef CONFIG_PM_RUNTIME +static int rotator_runtime_suspend(struct device *dev) +{

• struct rot_context *rot = dev_get_drvdata(dev);
• /* ToDo */
• DRM_DEBUG_KMS("%s\n", __func__);
• return rotator_clk_crtl(rot, false);

+}

+static int rotator_runtime_resume(struct device *dev) +{

• struct rot_context *rot = dev_get_drvdata(dev);
• /* ToDo */
• DRM_DEBUG_KMS("%s\n", __func__);
• return rotator_clk_crtl(rot, true);

+} +#endif

+static const struct dev_pm_ops rotator_pm_ops = {

• SET_SYSTEM_SLEEP_PM_OPS(rotator_suspend, rotator_resume)
• SET_RUNTIME_PM_OPS(rotator_runtime_suspend, rotator_runtime_resume,

NULL)

+};

+struct platform_driver rotator_driver = {

• .probe = rotator_probe,
• .remove = __devexit_p(rotator_remove),
• .id_table = rotator_driver_ids,
• .driver = {

• .name	= "exynos-rot",
  

• .owner	= THIS_MODULE,
  

• .pm	= &rotator_pm_ops,
  

• },

+}; diff --git a/drivers/gpu/drm/exynos/exynos_drm_rotator.h b/drivers/gpu/drm/exynos/exynos_drm_rotator.h new file mode 100644 index 0000000..fe929c9 --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_rotator.h @@ -0,0 +1,13 @@ +/*

• • Copyright (C) 2012 Samsung Electronics Co.Ltd
• • Authors: YoungJun Cho yj44.cho@samsung.com
• • 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
• */

+#ifndef _EXYNOS_DRM_ROTATOR_H_ +#define _EXYNOS_DRM_ROTATOR_H_

+#endif diff --git a/drivers/gpu/drm/exynos/regs-rotator.h b/drivers/gpu/drm/exynos/regs-rotator.h new file mode 100644 index 0000000..a09ac6e --- /dev/null +++ b/drivers/gpu/drm/exynos/regs-rotator.h @@ -0,0 +1,73 @@ +/* drivers/gpu/drm/exynos/regs-rotator.h

• • Copyright (c) 2012 Samsung Electronics Co., Ltd.

• • http://www.samsung.com/
    

• • Register definition file for Samsung Rotator Interface (Rotator)

driver

• • 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 Foundation.

+*/

+#ifndef EXYNOS_REGS_ROTATOR_H +#define EXYNOS_REGS_ROTATOR_H

+/* Configuration */ +#define ROT_CONFIG 0x00 +#define ROT_CONFIG_IRQ (3 << 8)

+/* Image Control */ +#define ROT_CONTROL 0x10 +#define ROT_CONTROL_PATTERN_WRITE (1 << 16) +#define ROT_CONTROL_FMT_YCBCR420_2P (1 << 8) +#define ROT_CONTROL_FMT_RGB888 (6 << 8) +#define ROT_CONTROL_FMT_MASK (7 << 8) +#define ROT_CONTROL_FLIP_VERTICAL (2 << 6) +#define ROT_CONTROL_FLIP_HORIZONTAL (3 << 6) +#define ROT_CONTROL_FLIP_MASK (3 << 6) +#define ROT_CONTROL_ROT_90 (1 << 4) +#define ROT_CONTROL_ROT_180 (2 << 4) +#define ROT_CONTROL_ROT_270 (3 << 4) +#define ROT_CONTROL_ROT_MASK (3 << 4) +#define ROT_CONTROL_START (1 << 0)

+/* Status */ +#define ROT_STATUS 0x20 +#define ROT_STATUS_IRQ_PENDING(x) (1 << (x)) +#define ROT_STATUS_IRQ(x) (((x) >> 8) & 0x3) +#define ROT_STATUS_IRQ_VAL_COMPLETE 1 +#define ROT_STATUS_IRQ_VAL_ILLEGAL 2

+/* Buffer Address */ +#define ROT_SRC_BUF_ADDR(n) (0x30 + ((n) << 2)) +#define ROT_DST_BUF_ADDR(n) (0x50 + ((n) << 2))

+/* Buffer Size */ +#define ROT_SRC_BUF_SIZE 0x3c +#define ROT_DST_BUF_SIZE 0x5c +#define ROT_SET_BUF_SIZE_H(x) ((x) << 16) +#define ROT_SET_BUF_SIZE_W(x) ((x) << 0) +#define ROT_GET_BUF_SIZE_H(x) ((x) >> 16) +#define ROT_GET_BUF_SIZE_W(x) ((x) & 0xffff)

+/* Crop Position */ +#define ROT_SRC_CROP_POS 0x40 +#define ROT_DST_CROP_POS 0x60 +#define ROT_CROP_POS_Y(x) ((x) << 16) +#define ROT_CROP_POS_X(x) ((x) << 0)

+/* Source Crop Size */ +#define ROT_SRC_CROP_SIZE 0x44 +#define ROT_SRC_CROP_SIZE_H(x) ((x) << 16) +#define ROT_SRC_CROP_SIZE_W(x) ((x) << 0)

+/* Round to nearest aligned value */ +#define ROT_ALIGN(x, align, mask) (((x) + (1 << ((align) - 1))) & (mask)) +/* Minimum limit value */ +#define ROT_MIN(min, mask) (((min) + ~(mask)) & (mask)) +/* Maximum limit value */ +#define ROT_MAX(max, mask) ((max) & (mask))

+#endif /* EXYNOS_REGS_ROTATOR_H */

-- 1.7.0.4