1 // SPDX-License-Identifier: GPL-2.0-only
14 #include <video/imx-ipu-v3.h>
16 #include "ipu-prv.h"
19 #define IPU_PRE_NUM_SCANLINES	8
23 #define  IPU_PRE_CTRL_ENABLE				(1 << 0)
24 #define  IPU_PRE_CTRL_BLOCK_EN				(1 << 1)
25 #define  IPU_PRE_CTRL_BLOCK_16				(1 << 2)
26 #define  IPU_PRE_CTRL_SDW_UPDATE			(1 << 4)
27 #define  IPU_PRE_CTRL_VFLIP				(1 << 5)
28 #define  IPU_PRE_CTRL_SO				(1 << 6)
29 #define  IPU_PRE_CTRL_INTERLACED_FIELD			(1 << 7)
30 #define  IPU_PRE_CTRL_HANDSHAKE_EN			(1 << 8)
31 #define  IPU_PRE_CTRL_HANDSHAKE_LINE_NUM(v)		((v & 0x3) << 9)  argument
32 #define  IPU_PRE_CTRL_HANDSHAKE_ABORT_SKIP_EN		(1 << 11)
33 #define  IPU_PRE_CTRL_EN_REPEAT				(1 << 28)
34 #define  IPU_PRE_CTRL_TPR_REST_SEL			(1 << 29)
35 #define  IPU_PRE_CTRL_CLKGATE				(1 << 30)
36 #define  IPU_PRE_CTRL_SFTRST				(1 << 31)
43 #define  IPU_PRE_TPR_CTRL_TILE_FORMAT(v)		((v & 0xff) << 0)  argument
45 #define  IPU_PRE_TPR_CTRL_TILE_FORMAT_16_BIT		(1 << 0)
46 #define  IPU_PRE_TPR_CTRL_TILE_FORMAT_SPLIT_BUF		(1 << 4)
47 #define  IPU_PRE_TPR_CTRL_TILE_FORMAT_SINGLE_BUF	(1 << 5)
48 #define  IPU_PRE_TPR_CTRL_TILE_FORMAT_SUPER_TILED	(1 << 6)
51 #define  IPU_PRE_PREF_ENG_CTRL_PREFETCH_EN		(1 << 0)
52 #define  IPU_PRE_PREF_ENG_CTRL_RD_NUM_BYTES(v)		((v & 0x7) << 1)  argument
53 #define  IPU_PRE_PREF_ENG_CTRL_INPUT_ACTIVE_BPP(v)	((v & 0x3) << 4)  argument
54 #define  IPU_PRE_PREF_ENG_CTRL_INPUT_PIXEL_FORMAT(v)	((v & 0x7) << 8)  argument
55 #define  IPU_PRE_PREF_ENG_CTRL_SHIFT_BYPASS		(1 << 11)
56 #define  IPU_PRE_PREF_ENG_CTRL_FIELD_INVERSE		(1 << 12)
57 #define  IPU_PRE_PREF_ENG_CTRL_PARTIAL_UV_SWAP		(1 << 14)
58 #define  IPU_PRE_PREF_ENG_CTRL_TPR_COOR_OFFSET_EN	(1 << 15)
61 #define  IPU_PRE_PREFETCH_ENG_INPUT_SIZE_WIDTH(v)	((v & 0xffff) << 0)  argument
62 #define  IPU_PRE_PREFETCH_ENG_INPUT_SIZE_HEIGHT(v)	((v & 0xffff) << 16)  argument
65 #define  IPU_PRE_PREFETCH_ENG_PITCH_Y(v)		((v & 0xffff) << 0)  argument
66 #define  IPU_PRE_PREFETCH_ENG_PITCH_UV(v)		((v & 0xffff) << 16)  argument
69 #define  IPU_PRE_STORE_ENG_CTRL_STORE_EN		(1 << 0)
70 #define  IPU_PRE_STORE_ENG_CTRL_WR_NUM_BYTES(v)		((v & 0x7) << 1)  argument
71 #define  IPU_PRE_STORE_ENG_CTRL_OUTPUT_ACTIVE_BPP(v)	((v & 0x3) << 4)  argument
78 #define  IPU_PRE_STORE_ENG_STATUS_STORE_FIFO_FULL	(1 << 30)
79 #define  IPU_PRE_STORE_ENG_STATUS_STORE_FIELD		(1 << 31)
82 #define  IPU_PRE_STORE_ENG_SIZE_INPUT_WIDTH(v)		((v & 0xffff) << 0)  argument
83 #define  IPU_PRE_STORE_ENG_SIZE_INPUT_HEIGHT(v)		((v & 0xffff) << 16)  argument
86 #define  IPU_PRE_STORE_ENG_PITCH_OUT_PITCH(v)		((v & 0xffff) << 0)  argument
125 		of_parse_phandle(dev->of_node, name, index);  in ipu_pre_lookup_by_phandle()
130 		if (pre_node == pre->dev->of_node) {  in ipu_pre_lookup_by_phandle()
132 			device_link_add(dev, pre->dev,  in ipu_pre_lookup_by_phandle()
146 	if (pre->cur.in_use)  in ipu_pre_get()
147 		return -EBUSY;  in ipu_pre_get()
150 	writel(0, pre->regs + IPU_PRE_CTRL);  in ipu_pre_get()
157 	writel(val, pre->regs + IPU_PRE_CTRL);  in ipu_pre_get()
159 	pre->cur.in_use = true;  in ipu_pre_get()
165 	writel(IPU_PRE_CTRL_SFTRST, pre->regs + IPU_PRE_CTRL);  in ipu_pre_put()
167 	pre->cur.in_use = false;  in ipu_pre_put()
173 	if (pre->cur.modifier == DRM_FORMAT_MOD_LINEAR)  in ipu_pre_update_safe_window()
174 		pre->cur.safe_window_end = pre->cur.height - 2;  in ipu_pre_update_safe_window()
176 		pre->cur.safe_window_end = DIV_ROUND_UP(pre->cur.height, 4) - 1;  in ipu_pre_update_safe_window()
184 	val = readl(pre->regs + IPU_PRE_TPR_CTRL);  in ipu_pre_configure_modifier()
191 		if (pre->cur.cpp == 2)  in ipu_pre_configure_modifier()
194 	writel(val, pre->regs + IPU_PRE_TPR_CTRL);  in ipu_pre_configure_modifier()
197 		pre->cur.ctrl &= ~IPU_PRE_CTRL_BLOCK_EN;  in ipu_pre_configure_modifier()
199 		pre->cur.ctrl |= IPU_PRE_CTRL_BLOCK_EN;  in ipu_pre_configure_modifier()
201 	pre->cur.modifier = modifier;  in ipu_pre_configure_modifier()
209 	u32 active_bpp = info->cpp[0] >> 1;  in ipu_pre_configure()
212 	pre->cur.bufaddr = bufaddr;  in ipu_pre_configure()
213 	pre->cur.height = height;  in ipu_pre_configure()
214 	pre->cur.cpp = info->cpp[0];  in ipu_pre_configure()
215 	pre->cur.ctrl = readl(pre->regs + IPU_PRE_CTRL);  in ipu_pre_configure()
220 	writel(bufaddr, pre->regs + IPU_PRE_CUR_BUF);  in ipu_pre_configure()
221 	writel(bufaddr, pre->regs + IPU_PRE_NEXT_BUF);  in ipu_pre_configure()
228 	writel(val, pre->regs + IPU_PRE_PREFETCH_ENG_CTRL);  in ipu_pre_configure()
232 	writel(val, pre->regs + IPU_PRE_PREFETCH_ENG_INPUT_SIZE);  in ipu_pre_configure()
235 	writel(val, pre->regs + IPU_PRE_PREFETCH_ENG_PITCH);  in ipu_pre_configure()
240 	writel(val, pre->regs + IPU_PRE_STORE_ENG_CTRL);  in ipu_pre_configure()
244 	writel(val, pre->regs + IPU_PRE_STORE_ENG_SIZE);  in ipu_pre_configure()
247 	writel(val, pre->regs + IPU_PRE_STORE_ENG_PITCH);  in ipu_pre_configure()
249 	writel(pre->buffer_paddr, pre->regs + IPU_PRE_STORE_ENG_ADDR);  in ipu_pre_configure()
253 	pre->cur.ctrl |= IPU_PRE_CTRL_EN_REPEAT | IPU_PRE_CTRL_ENABLE;  in ipu_pre_configure()
254 	writel(pre->cur.ctrl | IPU_PRE_CTRL_SDW_UPDATE,  in ipu_pre_configure()
255 	       pre->regs + IPU_PRE_CTRL);  in ipu_pre_configure()
260 	if (bufaddr == pre->cur.bufaddr &&  in ipu_pre_update()
261 	    modifier == pre->cur.modifier)  in ipu_pre_update()
264 	writel(bufaddr, pre->regs + IPU_PRE_NEXT_BUF);  in ipu_pre_update()
265 	pre->cur.bufaddr = bufaddr;  in ipu_pre_update()
267 	if (modifier != pre->cur.modifier)  in ipu_pre_update()
275 			dev_warn(pre->dev, "timeout waiting for PRE safe window\n");  in ipu_pre_update()
279 		val = readl(pre->regs + IPU_PRE_STORE_ENG_STATUS);  in ipu_pre_update()
285 		    current_yblock < pre->cur.safe_window_end)  in ipu_pre_update()
292 	writel(pre->cur.ctrl | IPU_PRE_CTRL_SDW_UPDATE,  in ipu_pre_update()
293 	       pre->regs + IPU_PRE_CTRL);  in ipu_pre_update()
301 	return !!(readl_relaxed(pre->regs + IPU_PRE_CTRL) &  in ipu_pre_update_pending()
307 	return (u32)pre->buffer_paddr;  in ipu_pre_get_baddr()
312 	struct device *dev = &pdev->dev;  in ipu_pre_probe()
317 		return -ENOMEM;  in ipu_pre_probe()
319 	pre->regs = devm_platform_ioremap_resource(pdev, 0);  in ipu_pre_probe()
320 	if (IS_ERR(pre->regs))  in ipu_pre_probe()
321 		return PTR_ERR(pre->regs);  in ipu_pre_probe()
323 	pre->clk_axi = devm_clk_get(dev, "axi");  in ipu_pre_probe()
324 	if (IS_ERR(pre->clk_axi))  in ipu_pre_probe()
325 		return PTR_ERR(pre->clk_axi);  in ipu_pre_probe()
327 	pre->iram = of_gen_pool_get(dev->of_node, "fsl,iram", 0);  in ipu_pre_probe()
328 	if (!pre->iram)  in ipu_pre_probe()
329 		return -EPROBE_DEFER;  in ipu_pre_probe()
333 	 * but as there is no other user of this IRAM region and we can fit all  in ipu_pre_probe()
334 	 * max sized buffers into it, there is no need yet.  in ipu_pre_probe()
336 	pre->buffer_virt = gen_pool_dma_alloc(pre->iram, IPU_PRE_MAX_WIDTH *  in ipu_pre_probe()
338 					      &pre->buffer_paddr);  in ipu_pre_probe()
339 	if (!pre->buffer_virt)  in ipu_pre_probe()
340 		return -ENOMEM;  in ipu_pre_probe()
342 	clk_prepare_enable(pre->clk_axi);  in ipu_pre_probe()
344 	pre->dev = dev;  in ipu_pre_probe()
347 	list_add(&pre->list, &ipu_pre_list);  in ipu_pre_probe()
359 	list_del(&pre->list);  in ipu_pre_remove()
360 	available_pres--;  in ipu_pre_remove()
363 	clk_disable_unprepare(pre->clk_axi);  in ipu_pre_remove()
365 	if (pre->buffer_virt)  in ipu_pre_remove()
366 		gen_pool_free(pre->iram, (unsigned long)pre->buffer_virt,  in ipu_pre_remove()
371 	{ .compatible = "fsl,imx6qp-pre", },
379 		.name	= "imx-ipu-pre",