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376 lines
8.7 KiB
376 lines
8.7 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) 2010 Sascha Hauer <[email protected]> |
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* Copyright (C) 2005-2009 Freescale Semiconductor, Inc. |
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*/ |
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#include <linux/export.h> |
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#include <linux/kernel.h> |
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#include <linux/types.h> |
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#include <linux/errno.h> |
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#include <linux/io.h> |
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#include <linux/err.h> |
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#include <drm/drm_color_mgmt.h> |
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#include <video/imx-ipu-v3.h> |
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#include "ipu-prv.h" |
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#define DP_SYNC 0 |
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#define DP_ASYNC0 0x60 |
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#define DP_ASYNC1 0xBC |
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#define DP_COM_CONF 0x0 |
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#define DP_GRAPH_WIND_CTRL 0x0004 |
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#define DP_FG_POS 0x0008 |
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#define DP_CSC_A_0 0x0044 |
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#define DP_CSC_A_1 0x0048 |
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#define DP_CSC_A_2 0x004C |
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#define DP_CSC_A_3 0x0050 |
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#define DP_CSC_0 0x0054 |
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#define DP_CSC_1 0x0058 |
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#define DP_COM_CONF_FG_EN (1 << 0) |
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#define DP_COM_CONF_GWSEL (1 << 1) |
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#define DP_COM_CONF_GWAM (1 << 2) |
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#define DP_COM_CONF_GWCKE (1 << 3) |
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#define DP_COM_CONF_CSC_DEF_MASK (3 << 8) |
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#define DP_COM_CONF_CSC_DEF_OFFSET 8 |
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#define DP_COM_CONF_CSC_DEF_FG (3 << 8) |
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#define DP_COM_CONF_CSC_DEF_BG (2 << 8) |
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#define DP_COM_CONF_CSC_DEF_BOTH (1 << 8) |
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#define IPUV3_NUM_FLOWS 3 |
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struct ipu_dp_priv; |
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struct ipu_dp { |
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u32 flow; |
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bool in_use; |
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bool foreground; |
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enum ipu_color_space in_cs; |
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}; |
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struct ipu_flow { |
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struct ipu_dp foreground; |
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struct ipu_dp background; |
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enum ipu_color_space out_cs; |
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void __iomem *base; |
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struct ipu_dp_priv *priv; |
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}; |
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struct ipu_dp_priv { |
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struct ipu_soc *ipu; |
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struct device *dev; |
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void __iomem *base; |
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struct ipu_flow flow[IPUV3_NUM_FLOWS]; |
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struct mutex mutex; |
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int use_count; |
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}; |
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static u32 ipu_dp_flow_base[] = {DP_SYNC, DP_ASYNC0, DP_ASYNC1}; |
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static inline struct ipu_flow *to_flow(struct ipu_dp *dp) |
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{ |
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if (dp->foreground) |
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return container_of(dp, struct ipu_flow, foreground); |
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else |
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return container_of(dp, struct ipu_flow, background); |
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} |
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int ipu_dp_set_global_alpha(struct ipu_dp *dp, bool enable, |
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u8 alpha, bool bg_chan) |
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{ |
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struct ipu_flow *flow = to_flow(dp); |
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struct ipu_dp_priv *priv = flow->priv; |
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u32 reg; |
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mutex_lock(&priv->mutex); |
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reg = readl(flow->base + DP_COM_CONF); |
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if (bg_chan) |
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reg &= ~DP_COM_CONF_GWSEL; |
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else |
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reg |= DP_COM_CONF_GWSEL; |
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writel(reg, flow->base + DP_COM_CONF); |
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if (enable) { |
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reg = readl(flow->base + DP_GRAPH_WIND_CTRL) & 0x00FFFFFFL; |
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writel(reg | ((u32) alpha << 24), |
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flow->base + DP_GRAPH_WIND_CTRL); |
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reg = readl(flow->base + DP_COM_CONF); |
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writel(reg | DP_COM_CONF_GWAM, flow->base + DP_COM_CONF); |
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} else { |
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reg = readl(flow->base + DP_COM_CONF); |
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writel(reg & ~DP_COM_CONF_GWAM, flow->base + DP_COM_CONF); |
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} |
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ipu_srm_dp_update(priv->ipu, true); |
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mutex_unlock(&priv->mutex); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_set_global_alpha); |
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int ipu_dp_set_window_pos(struct ipu_dp *dp, u16 x_pos, u16 y_pos) |
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{ |
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struct ipu_flow *flow = to_flow(dp); |
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struct ipu_dp_priv *priv = flow->priv; |
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writel((x_pos << 16) | y_pos, flow->base + DP_FG_POS); |
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ipu_srm_dp_update(priv->ipu, true); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_set_window_pos); |
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static void ipu_dp_csc_init(struct ipu_flow *flow, |
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enum drm_color_encoding ycbcr_enc, |
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enum drm_color_range range, |
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enum ipu_color_space in, |
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enum ipu_color_space out, |
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u32 place) |
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{ |
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u32 reg; |
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reg = readl(flow->base + DP_COM_CONF); |
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reg &= ~DP_COM_CONF_CSC_DEF_MASK; |
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if (in == out) { |
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writel(reg, flow->base + DP_COM_CONF); |
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return; |
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} |
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if (in == IPUV3_COLORSPACE_RGB && out == IPUV3_COLORSPACE_YUV) { |
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writel(0x099 | (0x12d << 16), flow->base + DP_CSC_A_0); |
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writel(0x03a | (0x3a9 << 16), flow->base + DP_CSC_A_1); |
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writel(0x356 | (0x100 << 16), flow->base + DP_CSC_A_2); |
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writel(0x100 | (0x329 << 16), flow->base + DP_CSC_A_3); |
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writel(0x3d6 | (0x0000 << 16) | (2 << 30), |
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flow->base + DP_CSC_0); |
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writel(0x200 | (2 << 14) | (0x200 << 16) | (2 << 30), |
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flow->base + DP_CSC_1); |
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} else if (ycbcr_enc == DRM_COLOR_YCBCR_BT709) { |
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/* Rec.709 limited range */ |
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writel(0x095 | (0x000 << 16), flow->base + DP_CSC_A_0); |
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writel(0x0e5 | (0x095 << 16), flow->base + DP_CSC_A_1); |
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writel(0x3e5 | (0x3bc << 16), flow->base + DP_CSC_A_2); |
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writel(0x095 | (0x10e << 16), flow->base + DP_CSC_A_3); |
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writel(0x000 | (0x3e10 << 16) | (1 << 30), |
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flow->base + DP_CSC_0); |
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writel(0x09a | (1 << 14) | (0x3dbe << 16) | (1 << 30), |
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flow->base + DP_CSC_1); |
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} else { |
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/* BT.601 limited range */ |
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writel(0x095 | (0x000 << 16), flow->base + DP_CSC_A_0); |
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writel(0x0cc | (0x095 << 16), flow->base + DP_CSC_A_1); |
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writel(0x3ce | (0x398 << 16), flow->base + DP_CSC_A_2); |
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writel(0x095 | (0x0ff << 16), flow->base + DP_CSC_A_3); |
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writel(0x000 | (0x3e42 << 16) | (1 << 30), |
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flow->base + DP_CSC_0); |
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writel(0x10a | (1 << 14) | (0x3dd6 << 16) | (1 << 30), |
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flow->base + DP_CSC_1); |
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} |
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reg |= place; |
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writel(reg, flow->base + DP_COM_CONF); |
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} |
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int ipu_dp_setup_channel(struct ipu_dp *dp, |
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enum drm_color_encoding ycbcr_enc, |
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enum drm_color_range range, |
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enum ipu_color_space in, |
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enum ipu_color_space out) |
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{ |
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struct ipu_flow *flow = to_flow(dp); |
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struct ipu_dp_priv *priv = flow->priv; |
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mutex_lock(&priv->mutex); |
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dp->in_cs = in; |
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if (!dp->foreground) |
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flow->out_cs = out; |
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if (flow->foreground.in_cs == flow->background.in_cs) { |
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/* |
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* foreground and background are of same colorspace, put |
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* colorspace converter after combining unit. |
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*/ |
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ipu_dp_csc_init(flow, ycbcr_enc, range, |
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flow->foreground.in_cs, flow->out_cs, |
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DP_COM_CONF_CSC_DEF_BOTH); |
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} else { |
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if (flow->foreground.in_cs == IPUV3_COLORSPACE_UNKNOWN || |
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flow->foreground.in_cs == flow->out_cs) |
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/* |
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* foreground identical to output, apply color |
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* conversion on background |
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*/ |
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ipu_dp_csc_init(flow, ycbcr_enc, range, |
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flow->background.in_cs, |
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flow->out_cs, DP_COM_CONF_CSC_DEF_BG); |
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else |
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ipu_dp_csc_init(flow, ycbcr_enc, range, |
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flow->foreground.in_cs, |
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flow->out_cs, DP_COM_CONF_CSC_DEF_FG); |
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} |
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ipu_srm_dp_update(priv->ipu, true); |
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mutex_unlock(&priv->mutex); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_setup_channel); |
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int ipu_dp_enable(struct ipu_soc *ipu) |
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{ |
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struct ipu_dp_priv *priv = ipu->dp_priv; |
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mutex_lock(&priv->mutex); |
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if (!priv->use_count) |
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ipu_module_enable(priv->ipu, IPU_CONF_DP_EN); |
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priv->use_count++; |
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mutex_unlock(&priv->mutex); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_enable); |
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int ipu_dp_enable_channel(struct ipu_dp *dp) |
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{ |
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struct ipu_flow *flow = to_flow(dp); |
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struct ipu_dp_priv *priv = flow->priv; |
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u32 reg; |
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if (!dp->foreground) |
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return 0; |
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mutex_lock(&priv->mutex); |
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reg = readl(flow->base + DP_COM_CONF); |
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reg |= DP_COM_CONF_FG_EN; |
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writel(reg, flow->base + DP_COM_CONF); |
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ipu_srm_dp_update(priv->ipu, true); |
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mutex_unlock(&priv->mutex); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_enable_channel); |
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void ipu_dp_disable_channel(struct ipu_dp *dp, bool sync) |
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{ |
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struct ipu_flow *flow = to_flow(dp); |
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struct ipu_dp_priv *priv = flow->priv; |
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u32 reg, csc; |
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dp->in_cs = IPUV3_COLORSPACE_UNKNOWN; |
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if (!dp->foreground) |
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return; |
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mutex_lock(&priv->mutex); |
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reg = readl(flow->base + DP_COM_CONF); |
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csc = reg & DP_COM_CONF_CSC_DEF_MASK; |
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reg &= ~DP_COM_CONF_CSC_DEF_MASK; |
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if (csc == DP_COM_CONF_CSC_DEF_BOTH || csc == DP_COM_CONF_CSC_DEF_BG) |
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reg |= DP_COM_CONF_CSC_DEF_BG; |
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reg &= ~DP_COM_CONF_FG_EN; |
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writel(reg, flow->base + DP_COM_CONF); |
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writel(0, flow->base + DP_FG_POS); |
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ipu_srm_dp_update(priv->ipu, sync); |
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mutex_unlock(&priv->mutex); |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_disable_channel); |
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void ipu_dp_disable(struct ipu_soc *ipu) |
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{ |
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struct ipu_dp_priv *priv = ipu->dp_priv; |
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mutex_lock(&priv->mutex); |
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priv->use_count--; |
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if (!priv->use_count) |
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ipu_module_disable(priv->ipu, IPU_CONF_DP_EN); |
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if (priv->use_count < 0) |
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priv->use_count = 0; |
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mutex_unlock(&priv->mutex); |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_disable); |
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struct ipu_dp *ipu_dp_get(struct ipu_soc *ipu, unsigned int flow) |
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{ |
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struct ipu_dp_priv *priv = ipu->dp_priv; |
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struct ipu_dp *dp; |
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if ((flow >> 1) >= IPUV3_NUM_FLOWS) |
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return ERR_PTR(-EINVAL); |
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if (flow & 1) |
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dp = &priv->flow[flow >> 1].foreground; |
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else |
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dp = &priv->flow[flow >> 1].background; |
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if (dp->in_use) |
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return ERR_PTR(-EBUSY); |
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dp->in_use = true; |
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return dp; |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_get); |
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void ipu_dp_put(struct ipu_dp *dp) |
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{ |
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dp->in_use = false; |
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} |
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EXPORT_SYMBOL_GPL(ipu_dp_put); |
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int ipu_dp_init(struct ipu_soc *ipu, struct device *dev, unsigned long base) |
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{ |
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struct ipu_dp_priv *priv; |
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int i; |
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
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if (!priv) |
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return -ENOMEM; |
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priv->dev = dev; |
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priv->ipu = ipu; |
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ipu->dp_priv = priv; |
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priv->base = devm_ioremap(dev, base, PAGE_SIZE); |
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if (!priv->base) |
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return -ENOMEM; |
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mutex_init(&priv->mutex); |
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for (i = 0; i < IPUV3_NUM_FLOWS; i++) { |
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priv->flow[i].background.in_cs = IPUV3_COLORSPACE_UNKNOWN; |
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priv->flow[i].foreground.in_cs = IPUV3_COLORSPACE_UNKNOWN; |
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priv->flow[i].foreground.foreground = true; |
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priv->flow[i].base = priv->base + ipu_dp_flow_base[i]; |
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priv->flow[i].priv = priv; |
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} |
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return 0; |
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} |
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void ipu_dp_exit(struct ipu_soc *ipu) |
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{ |
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}
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