| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lucas Stach | 1483 | 99.13% | 6 | 66.67% |
| Tobias Jordan | 10 | 0.67% | 1 | 11.11% |
| Thomas Gleixner | 2 | 0.13% | 1 | 11.11% |
| Vivek Gautam | 1 | 0.07% | 1 | 11.11% |
| Total | 1496 | 9 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2017 Lucas Stach, Pengutronix */ #include <drm/drm_fourcc.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/genalloc.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <video/imx-ipu-v3.h> #include "ipu-prv.h" #define IPU_PRE_MAX_WIDTH 2048 #define IPU_PRE_NUM_SCANLINES 8 #define IPU_PRE_CTRL 0x000 #define IPU_PRE_CTRL_SET 0x004 #define IPU_PRE_CTRL_ENABLE (1 << 0) #define IPU_PRE_CTRL_BLOCK_EN (1 << 1) #define IPU_PRE_CTRL_BLOCK_16 (1 << 2) #define IPU_PRE_CTRL_SDW_UPDATE (1 << 4) #define IPU_PRE_CTRL_VFLIP (1 << 5) #define IPU_PRE_CTRL_SO (1 << 6) #define IPU_PRE_CTRL_INTERLACED_FIELD (1 << 7) #define IPU_PRE_CTRL_HANDSHAKE_EN (1 << 8) #define IPU_PRE_CTRL_HANDSHAKE_LINE_NUM(v) ((v & 0x3) << 9) #define IPU_PRE_CTRL_HANDSHAKE_ABORT_SKIP_EN (1 << 11) #define IPU_PRE_CTRL_EN_REPEAT (1 << 28) #define IPU_PRE_CTRL_TPR_REST_SEL (1 << 29) #define IPU_PRE_CTRL_CLKGATE (1 << 30) #define IPU_PRE_CTRL_SFTRST (1 << 31) #define IPU_PRE_CUR_BUF 0x030 #define IPU_PRE_NEXT_BUF 0x040 #define IPU_PRE_TPR_CTRL 0x070 #define IPU_PRE_TPR_CTRL_TILE_FORMAT(v) ((v & 0xff) << 0) #define IPU_PRE_TPR_CTRL_TILE_FORMAT_MASK 0xff #define IPU_PRE_TPR_CTRL_TILE_FORMAT_16_BIT (1 << 0) #define IPU_PRE_TPR_CTRL_TILE_FORMAT_SPLIT_BUF (1 << 4) #define IPU_PRE_TPR_CTRL_TILE_FORMAT_SINGLE_BUF (1 << 5) #define IPU_PRE_TPR_CTRL_TILE_FORMAT_SUPER_TILED (1 << 6) #define IPU_PRE_PREFETCH_ENG_CTRL 0x080 #define IPU_PRE_PREF_ENG_CTRL_PREFETCH_EN (1 << 0) #define IPU_PRE_PREF_ENG_CTRL_RD_NUM_BYTES(v) ((v & 0x7) << 1) #define IPU_PRE_PREF_ENG_CTRL_INPUT_ACTIVE_BPP(v) ((v & 0x3) << 4) #define IPU_PRE_PREF_ENG_CTRL_INPUT_PIXEL_FORMAT(v) ((v & 0x7) << 8) #define IPU_PRE_PREF_ENG_CTRL_SHIFT_BYPASS (1 << 11) #define IPU_PRE_PREF_ENG_CTRL_FIELD_INVERSE (1 << 12) #define IPU_PRE_PREF_ENG_CTRL_PARTIAL_UV_SWAP (1 << 14) #define IPU_PRE_PREF_ENG_CTRL_TPR_COOR_OFFSET_EN (1 << 15) #define IPU_PRE_PREFETCH_ENG_INPUT_SIZE 0x0a0 #define IPU_PRE_PREFETCH_ENG_INPUT_SIZE_WIDTH(v) ((v & 0xffff) << 0) #define IPU_PRE_PREFETCH_ENG_INPUT_SIZE_HEIGHT(v) ((v & 0xffff) << 16) #define IPU_PRE_PREFETCH_ENG_PITCH 0x0d0 #define IPU_PRE_PREFETCH_ENG_PITCH_Y(v) ((v & 0xffff) << 0) #define IPU_PRE_PREFETCH_ENG_PITCH_UV(v) ((v & 0xffff) << 16) #define IPU_PRE_STORE_ENG_CTRL 0x110 #define IPU_PRE_STORE_ENG_CTRL_STORE_EN (1 << 0) #define IPU_PRE_STORE_ENG_CTRL_WR_NUM_BYTES(v) ((v & 0x7) << 1) #define IPU_PRE_STORE_ENG_CTRL_OUTPUT_ACTIVE_BPP(v) ((v & 0x3) << 4) #define IPU_PRE_STORE_ENG_STATUS 0x120 #define IPU_PRE_STORE_ENG_STATUS_STORE_BLOCK_X_MASK 0xffff #define IPU_PRE_STORE_ENG_STATUS_STORE_BLOCK_X_SHIFT 0 #define IPU_PRE_STORE_ENG_STATUS_STORE_BLOCK_Y_MASK 0x3fff #define IPU_PRE_STORE_ENG_STATUS_STORE_BLOCK_Y_SHIFT 16 #define IPU_PRE_STORE_ENG_STATUS_STORE_FIFO_FULL (1 << 30) #define IPU_PRE_STORE_ENG_STATUS_STORE_FIELD (1 << 31) #define IPU_PRE_STORE_ENG_SIZE 0x130 #define IPU_PRE_STORE_ENG_SIZE_INPUT_WIDTH(v) ((v & 0xffff) << 0) #define IPU_PRE_STORE_ENG_SIZE_INPUT_HEIGHT(v) ((v & 0xffff) << 16) #define IPU_PRE_STORE_ENG_PITCH 0x140 #define IPU_PRE_STORE_ENG_PITCH_OUT_PITCH(v) ((v & 0xffff) << 0) #define IPU_PRE_STORE_ENG_ADDR 0x150 struct ipu_pre { struct list_head list; struct device *dev; void __iomem *regs; struct clk *clk_axi; struct gen_pool *iram; dma_addr_t buffer_paddr; void *buffer_virt; bool in_use; unsigned int safe_window_end; unsigned int last_bufaddr; }; static DEFINE_MUTEX(ipu_pre_list_mutex); static LIST_HEAD(ipu_pre_list); static int available_pres; int ipu_pre_get_available_count(void) { return available_pres; } struct ipu_pre * ipu_pre_lookup_by_phandle(struct device *dev, const char *name, int index) { struct device_node *pre_node = of_parse_phandle(dev->of_node, name, index); struct ipu_pre *pre; mutex_lock(&ipu_pre_list_mutex); list_for_each_entry(pre, &ipu_pre_list, list) { if (pre_node == pre->dev->of_node) { mutex_unlock(&ipu_pre_list_mutex); device_link_add(dev, pre->dev, DL_FLAG_AUTOREMOVE_CONSUMER); of_node_put(pre_node); return pre; } } mutex_unlock(&ipu_pre_list_mutex); of_node_put(pre_node); return NULL; } int ipu_pre_get(struct ipu_pre *pre) { u32 val; if (pre->in_use) return -EBUSY; /* first get the engine out of reset and remove clock gating */ writel(0, pre->regs + IPU_PRE_CTRL); /* init defaults that should be applied to all streams */ val = IPU_PRE_CTRL_HANDSHAKE_ABORT_SKIP_EN | IPU_PRE_CTRL_HANDSHAKE_EN | IPU_PRE_CTRL_TPR_REST_SEL | IPU_PRE_CTRL_SDW_UPDATE; writel(val, pre->regs + IPU_PRE_CTRL); pre->in_use = true; return 0; } void ipu_pre_put(struct ipu_pre *pre) { writel(IPU_PRE_CTRL_SFTRST, pre->regs + IPU_PRE_CTRL); pre->in_use = false; } void ipu_pre_configure(struct ipu_pre *pre, unsigned int width, unsigned int height, unsigned int stride, u32 format, uint64_t modifier, unsigned int bufaddr) { const struct drm_format_info *info = drm_format_info(format); u32 active_bpp = info->cpp[0] >> 1; u32 val; /* calculate safe window for ctrl register updates */ if (modifier == DRM_FORMAT_MOD_LINEAR) pre->safe_window_end = height - 2; else pre->safe_window_end = DIV_ROUND_UP(height, 4) - 1; writel(bufaddr, pre->regs + IPU_PRE_CUR_BUF); writel(bufaddr, pre->regs + IPU_PRE_NEXT_BUF); pre->last_bufaddr = bufaddr; val = IPU_PRE_PREF_ENG_CTRL_INPUT_PIXEL_FORMAT(0) | IPU_PRE_PREF_ENG_CTRL_INPUT_ACTIVE_BPP(active_bpp) | IPU_PRE_PREF_ENG_CTRL_RD_NUM_BYTES(4) | IPU_PRE_PREF_ENG_CTRL_SHIFT_BYPASS | IPU_PRE_PREF_ENG_CTRL_PREFETCH_EN; writel(val, pre->regs + IPU_PRE_PREFETCH_ENG_CTRL); val = IPU_PRE_PREFETCH_ENG_INPUT_SIZE_WIDTH(width) | IPU_PRE_PREFETCH_ENG_INPUT_SIZE_HEIGHT(height); writel(val, pre->regs + IPU_PRE_PREFETCH_ENG_INPUT_SIZE); val = IPU_PRE_PREFETCH_ENG_PITCH_Y(stride); writel(val, pre->regs + IPU_PRE_PREFETCH_ENG_PITCH); val = IPU_PRE_STORE_ENG_CTRL_OUTPUT_ACTIVE_BPP(active_bpp) | IPU_PRE_STORE_ENG_CTRL_WR_NUM_BYTES(4) | IPU_PRE_STORE_ENG_CTRL_STORE_EN; writel(val, pre->regs + IPU_PRE_STORE_ENG_CTRL); val = IPU_PRE_STORE_ENG_SIZE_INPUT_WIDTH(width) | IPU_PRE_STORE_ENG_SIZE_INPUT_HEIGHT(height); writel(val, pre->regs + IPU_PRE_STORE_ENG_SIZE); val = IPU_PRE_STORE_ENG_PITCH_OUT_PITCH(stride); writel(val, pre->regs + IPU_PRE_STORE_ENG_PITCH); writel(pre->buffer_paddr, pre->regs + IPU_PRE_STORE_ENG_ADDR); val = readl(pre->regs + IPU_PRE_TPR_CTRL); val &= ~IPU_PRE_TPR_CTRL_TILE_FORMAT_MASK; if (modifier != DRM_FORMAT_MOD_LINEAR) { /* only support single buffer formats for now */ val |= IPU_PRE_TPR_CTRL_TILE_FORMAT_SINGLE_BUF; if (modifier == DRM_FORMAT_MOD_VIVANTE_SUPER_TILED) val |= IPU_PRE_TPR_CTRL_TILE_FORMAT_SUPER_TILED; if (info->cpp[0] == 2) val |= IPU_PRE_TPR_CTRL_TILE_FORMAT_16_BIT; } writel(val, pre->regs + IPU_PRE_TPR_CTRL); val = readl(pre->regs + IPU_PRE_CTRL); val |= IPU_PRE_CTRL_EN_REPEAT | IPU_PRE_CTRL_ENABLE | IPU_PRE_CTRL_SDW_UPDATE; if (modifier == DRM_FORMAT_MOD_LINEAR) val &= ~IPU_PRE_CTRL_BLOCK_EN; else val |= IPU_PRE_CTRL_BLOCK_EN; writel(val, pre->regs + IPU_PRE_CTRL); } void ipu_pre_update(struct ipu_pre *pre, unsigned int bufaddr) { unsigned long timeout = jiffies + msecs_to_jiffies(5); unsigned short current_yblock; u32 val; if (bufaddr == pre->last_bufaddr) return; writel(bufaddr, pre->regs + IPU_PRE_NEXT_BUF); pre->last_bufaddr = bufaddr; do { if (time_after(jiffies, timeout)) { dev_warn(pre->dev, "timeout waiting for PRE safe window\n"); return; } val = readl(pre->regs + IPU_PRE_STORE_ENG_STATUS); current_yblock = (val >> IPU_PRE_STORE_ENG_STATUS_STORE_BLOCK_Y_SHIFT) & IPU_PRE_STORE_ENG_STATUS_STORE_BLOCK_Y_MASK; } while (current_yblock == 0 || current_yblock >= pre->safe_window_end); writel(IPU_PRE_CTRL_SDW_UPDATE, pre->regs + IPU_PRE_CTRL_SET); } bool ipu_pre_update_pending(struct ipu_pre *pre) { return !!(readl_relaxed(pre->regs + IPU_PRE_CTRL) & IPU_PRE_CTRL_SDW_UPDATE); } u32 ipu_pre_get_baddr(struct ipu_pre *pre) { return (u32)pre->buffer_paddr; } static int ipu_pre_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct resource *res; struct ipu_pre *pre; pre = devm_kzalloc(dev, sizeof(*pre), GFP_KERNEL); if (!pre) return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); pre->regs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(pre->regs)) return PTR_ERR(pre->regs); pre->clk_axi = devm_clk_get(dev, "axi"); if (IS_ERR(pre->clk_axi)) return PTR_ERR(pre->clk_axi); pre->iram = of_gen_pool_get(dev->of_node, "fsl,iram", 0); if (!pre->iram) return -EPROBE_DEFER; /* * Allocate IRAM buffer with maximum size. This could be made dynamic, * but as there is no other user of this IRAM region and we can fit all * max sized buffers into it, there is no need yet. */ pre->buffer_virt = gen_pool_dma_alloc(pre->iram, IPU_PRE_MAX_WIDTH * IPU_PRE_NUM_SCANLINES * 4, &pre->buffer_paddr); if (!pre->buffer_virt) return -ENOMEM; clk_prepare_enable(pre->clk_axi); pre->dev = dev; platform_set_drvdata(pdev, pre); mutex_lock(&ipu_pre_list_mutex); list_add(&pre->list, &ipu_pre_list); available_pres++; mutex_unlock(&ipu_pre_list_mutex); return 0; } static int ipu_pre_remove(struct platform_device *pdev) { struct ipu_pre *pre = platform_get_drvdata(pdev); mutex_lock(&ipu_pre_list_mutex); list_del(&pre->list); available_pres--; mutex_unlock(&ipu_pre_list_mutex); clk_disable_unprepare(pre->clk_axi); if (pre->buffer_virt) gen_pool_free(pre->iram, (unsigned long)pre->buffer_virt, IPU_PRE_MAX_WIDTH * IPU_PRE_NUM_SCANLINES * 4); return 0; } static const struct of_device_id ipu_pre_dt_ids[] = { { .compatible = "fsl,imx6qp-pre", }, { /* sentinel */ }, }; struct platform_driver ipu_pre_drv = { .probe = ipu_pre_probe, .remove = ipu_pre_remove, .driver = { .name = "imx-ipu-pre", .of_match_table = ipu_pre_dt_ids, }, };
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