litmus-rt.git - The LITMUS^RT kernel.

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Diffstat (limited to 'scripts/patch-kernel')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de> * Copyright (C) 2005-2009 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. */ #include <linux/export.h> #include <linux/kernel.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/io.h> #include <linux/err.h> #include <video/imx-ipu-v3.h> #include "ipu-prv.h" #define DP_SYNC 0 #define DP_ASYNC0 0x60 #define DP_ASYNC1 0xBC #define DP_COM_CONF 0x0 #define DP_GRAPH_WIND_CTRL 0x0004 #define DP_FG_POS 0x0008 #define DP_CSC_A_0 0x0044 #define DP_CSC_A_1 0x0048 #define DP_CSC_A_2 0x004C #define DP_CSC_A_3 0x0050 #define DP_CSC_0 0x0054 #define DP_CSC_1 0x0058 #define DP_COM_CONF_FG_EN (1 << 0) #define DP_COM_CONF_GWSEL (1 << 1) #define DP_COM_CONF_GWAM (1 << 2) #define DP_COM_CONF_GWCKE (1 << 3) #define DP_COM_CONF_CSC_DEF_MASK (3 << 8) #define DP_COM_CONF_CSC_DEF_OFFSET 8 #define DP_COM_CONF_CSC_DEF_FG (3 << 8) #define DP_COM_CONF_CSC_DEF_BG (2 << 8) #define DP_COM_CONF_CSC_DEF_BOTH (1 << 8) #define IPUV3_NUM_FLOWS 3 struct ipu_dp_priv; struct ipu_dp { u32 flow; bool in_use; bool foreground; enum ipu_color_space in_cs; }; struct ipu_flow { struct ipu_dp foreground; struct ipu_dp background; enum ipu_color_space out_cs; void __iomem *base; struct ipu_dp_priv *priv; }; struct ipu_dp_priv { struct ipu_soc *ipu; struct device *dev; void __iomem *base; struct ipu_flow flow[IPUV3_NUM_FLOWS]; struct mutex mutex; int use_count; }; static u32 ipu_dp_flow_base[] = {DP_SYNC, DP_ASYNC0, DP_ASYNC1}; static inline struct ipu_flow *to_flow(struct ipu_dp *dp) { if (dp->foreground) return container_of(dp, struct ipu_flow, foreground); else return container_of(dp, struct ipu_flow, background); } int ipu_dp_set_global_alpha(struct ipu_dp *dp, bool enable, u8 alpha, bool bg_chan) { struct ipu_flow *flow = to_flow(dp); struct ipu_dp_priv *priv = flow->priv; u32 reg; mutex_lock(&priv->mutex); reg = readl(flow->base + DP_COM_CONF); if (bg_chan) reg &= ~DP_COM_CONF_GWSEL; else reg |= DP_COM_CONF_GWSEL; writel(reg, flow->base + DP_COM_CONF); if (enable) { reg = readl(flow->base + DP_GRAPH_WIND_CTRL) & 0x00FFFFFFL; writel(reg | ((u32) alpha << 24), flow->base + DP_GRAPH_WIND_CTRL); reg = readl(flow->base + DP_COM_CONF); writel(reg | DP_COM_CONF_GWAM, flow->base + DP_COM_CONF); } else { reg = readl(flow->base + DP_COM_CONF); writel(reg & ~DP_COM_CONF_GWAM, flow->base + DP_COM_CONF); } ipu_srm_dp_update(priv->ipu, true); mutex_unlock(&priv->mutex); return 0; } EXPORT_SYMBOL_GPL(ipu_dp_set_global_alpha); int ipu_dp_set_window_pos(struct ipu_dp *dp, u16 x_pos, u16 y_pos) { struct ipu_flow *flow = to_flow(dp); struct ipu_dp_priv *priv = flow->priv; writel((x_pos << 16) | y_pos, flow->base + DP_FG_POS); ipu_srm_dp_update(priv->ipu, true); return 0; } EXPORT_SYMBOL_GPL(ipu_dp_set_window_pos); static void ipu_dp_csc_init(struct ipu_flow *flow, enum ipu_color_space in, enum ipu_color_space out, u32 place) { u32 reg; reg = readl(flow->base + DP_COM_CONF); reg &= ~DP_COM_CONF_CSC_DEF_MASK; if (in == out) { writel(reg, flow->base + DP_COM_CONF); return; } if (in == IPUV3_COLORSPACE_RGB && out == IPUV3_COLORSPACE_YUV) { writel(0x099 | (0x12d << 16), flow->base + DP_CSC_A_0); writel(0x03a | (0x3a9 << 16), flow->base + DP_CSC_A_1); writel(0x356 | (0x100 << 16), flow->base + DP_CSC_A_2); writel(0x100 | (0x329 << 16), flow->base + DP_CSC_A_3); writel(0x3d6 | (0x0000 << 16) | (2 << 30), flow->base + DP_CSC_0); writel(0x200 | (2 << 14) | (0x200 << 16) | (2 << 30), flow->base + DP_CSC_1); } else { writel(0x095 | (0x000 << 16), flow->base + DP_CSC_A_0); writel(0x0cc | (0x095 << 16), flow->base + DP_CSC_A_1); writel(0x3ce | (0x398 << 16), flow->base + DP_CSC_A_2); writel(0x095 | (0x0ff << 16), flow->base + DP_CSC_A_3); writel(0x000 | (0x3e42 << 16) | (1 << 30), flow->base + DP_CSC_0); writel(0x10a | (1 << 14) | (0x3dd6 << 16) | (1 << 30), flow->base + DP_CSC_1); } reg |= place; writel(reg, flow->base + DP_COM_CONF); } int ipu_dp_setup_channel(struct ipu_dp *dp, enum ipu_color_space in, enum ipu_color_space out) { struct ipu_flow *flow = to_flow(dp); struct ipu_dp_priv *priv = flow->priv; mutex_lock(&priv->mutex); dp->in_cs = in; if (!dp->foreground) flow->out_cs = out; if (flow->foreground.in_cs == flow->background.in_cs) { /* * foreground and background are of same colorspace, put * colorspace converter after combining unit. */ ipu_dp_csc_init(flow, flow->foreground.in_cs, flow->out_cs, DP_COM_CONF_CSC_DEF_BOTH); } else { if (flow->foreground.in_cs == flow->out_cs) /* * foreground identical to output, apply color * conversion on background */ ipu_dp_csc_init(flow, flow->background.in_cs, flow->out_cs, DP_COM_CONF_CSC_DEF_BG); else ipu_dp_csc_init(flow, flow->foreground.in_cs, flow->out_cs, DP_COM_CONF_CSC_DEF_FG); } ipu_srm_dp_update(priv->ipu, true); mutex_unlock(&priv->mutex); return 0; } EXPORT_SYMBOL_GPL(ipu_dp_setup_channel); int ipu_dp_enable(struct ipu_soc *ipu) { struct ipu_dp_priv *priv = ipu->dp_priv; mutex_lock(&priv->mutex); if (!priv->use_count) ipu_module_enable(priv->ipu, IPU_CONF_DP_EN); priv->use_count++; mutex_unlock(&priv->mutex); return 0; } EXPORT_SYMBOL_GPL(ipu_dp_enable); int ipu_dp_enable_channel(struct ipu_dp *dp) { struct ipu_flow *flow = to_flow(dp); struct ipu_dp_priv *priv = flow->priv; u32 reg; if (!dp->foreground) return 0; mutex_lock(&priv->mutex); reg = readl(flow->base + DP_COM_CONF); reg |= DP_COM_CONF_FG_EN; writel(reg, flow->base + DP_COM_CONF); ipu_srm_dp_update(priv->ipu, true); mutex_unlock(&priv->mutex); return 0; } EXPORT_SYMBOL_GPL(ipu_dp_enable_channel); void ipu_dp_disable_channel(struct ipu_dp *dp, bool sync) { struct ipu_flow *flow = to_flow(dp); struct ipu_dp_priv *priv = flow->priv; u32 reg, csc; if (!dp->foreground) return; mutex_lock(&priv->mutex); reg = readl(flow->base + DP_COM_CONF); csc = reg & DP_COM_CONF_CSC_DEF_MASK; if (csc == DP_COM_CONF_CSC_DEF_FG) reg &= ~DP_COM_CONF_CSC_DEF_MASK; reg &= ~DP_COM_CONF_FG_EN; writel(reg, flow->base + DP_COM_CONF); writel(0, flow->base + DP_FG_POS); ipu_srm_dp_update(priv->ipu, sync); mutex_unlock(&priv->mutex); } EXPORT_SYMBOL_GPL(ipu_dp_disable_channel); void ipu_dp_disable(struct ipu_soc *ipu) { struct ipu_dp_priv *priv = ipu->dp_priv; mutex_lock(&priv->mutex); priv->use_count--; if (!priv->use_count) ipu_module_disable(priv->ipu, IPU_CONF_DP_EN); if (priv->use_count < 0) priv->use_count = 0; mutex_unlock(&priv->mutex); } EXPORT_SYMBOL_GPL(ipu_dp_disable); struct ipu_dp *ipu_dp_get(struct ipu_soc *ipu, unsigned int flow) { struct ipu_dp_priv *priv = ipu->dp_priv; struct ipu_dp *dp; if ((flow >> 1) >= IPUV3_NUM_FLOWS) return ERR_PTR(-EINVAL); if (flow & 1) dp = &priv->flow[flow >> 1].foreground; else dp = &priv->flow[flow >> 1].background; if (dp->in_use) return ERR_PTR(-EBUSY); dp->in_use = true; return dp; } EXPORT_SYMBOL_GPL(ipu_dp_get); void ipu_dp_put(struct ipu_dp *dp) { dp->in_use = false; } EXPORT_SYMBOL_GPL(ipu_dp_put); int ipu_dp_init(struct ipu_soc *ipu, struct device *dev, unsigned long base) { struct ipu_dp_priv *priv; int i; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->dev = dev; priv->ipu = ipu; ipu->dp_priv = priv; priv->base = devm_ioremap(dev, base, PAGE_SIZE); if (!priv->base) return -ENOMEM; mutex_init(&priv->mutex); for (i = 0; i < IPUV3_NUM_FLOWS; i++) { priv->flow[i].foreground.foreground = true; priv->flow[i].base = priv->base + ipu_dp_flow_base[i]; priv->flow[i].priv = priv; } return 0; } void ipu_dp_exit(struct ipu_soc *ipu) { }


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