| /* |
| * 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/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_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; |
| const struct of_device_id *match; |
| 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; |
| |
| match = of_match_node(exynos_rotator_match, dev->of_node); |
| if (!match) { |
| dev_err(dev, "failed to match node\n"); |
| return -ENODEV; |
| } |
| rot->limit_tbl = (struct rot_limit_table *)match->data; |
| |
| 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[%p]\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; |
| } |
| |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int rotator_suspend(struct device *dev) |
| { |
| struct rot_context *rot = dev_get_drvdata(dev); |
| |
| 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); |
| |
| if (!pm_runtime_suspended(dev)) |
| return rotator_clk_crtl(rot, true); |
| |
| return 0; |
| } |
| #endif |
| |
| 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(rotator_suspend, rotator_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, |
| }, |
| }; |