364 lines
8.2 KiB
C
364 lines
8.2 KiB
C
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/*
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* Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>
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* Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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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 <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_sync_update(priv->ipu);
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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_sync_update(priv->ipu);
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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 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 {
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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 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, 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 == 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, 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, 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_sync_update(priv->ipu);
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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_sync_update(priv->ipu);
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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)
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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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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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if (csc == DP_COM_CONF_CSC_DEF_FG)
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reg &= ~DP_COM_CONF_CSC_DEF_MASK;
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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_sync_update(priv->ipu);
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if (ipu_idmac_channel_busy(priv->ipu, IPUV3_CHANNEL_MEM_BG_SYNC))
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ipu_wait_interrupt(priv->ipu, IPU_IRQ_DP_SF_END, 50);
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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].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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