2 * Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>
3 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 #include <linux/export.h>
16 #include <linux/kernel.h>
17 #include <linux/types.h>
18 #include <linux/errno.h>
20 #include <linux/err.h>
22 #include "imx-ipu-v3.h"
26 #define DP_ASYNC0 0x60
27 #define DP_ASYNC1 0xBC
29 #define DP_COM_CONF 0x0
30 #define DP_GRAPH_WIND_CTRL 0x0004
31 #define DP_FG_POS 0x0008
32 #define DP_CSC_A_0 0x0044
33 #define DP_CSC_A_1 0x0048
34 #define DP_CSC_A_2 0x004C
35 #define DP_CSC_A_3 0x0050
36 #define DP_CSC_0 0x0054
37 #define DP_CSC_1 0x0058
39 #define DP_COM_CONF_FG_EN (1 << 0)
40 #define DP_COM_CONF_GWSEL (1 << 1)
41 #define DP_COM_CONF_GWAM (1 << 2)
42 #define DP_COM_CONF_GWCKE (1 << 3)
43 #define DP_COM_CONF_CSC_DEF_MASK (3 << 8)
44 #define DP_COM_CONF_CSC_DEF_OFFSET 8
45 #define DP_COM_CONF_CSC_DEF_FG (3 << 8)
46 #define DP_COM_CONF_CSC_DEF_BG (2 << 8)
47 #define DP_COM_CONF_CSC_DEF_BOTH (1 << 8)
55 enum ipu_color_space in_cs;
59 struct ipu_dp foreground;
60 struct ipu_dp background;
61 enum ipu_color_space out_cs;
63 struct ipu_dp_priv *priv;
70 struct ipu_flow flow[3];
75 static u32 ipu_dp_flow_base[] = {DP_SYNC, DP_ASYNC0, DP_ASYNC1};
77 static inline struct ipu_flow *to_flow(struct ipu_dp *dp)
80 return container_of(dp, struct ipu_flow, foreground);
82 return container_of(dp, struct ipu_flow, background);
85 int ipu_dp_set_global_alpha(struct ipu_dp *dp, bool enable,
86 u8 alpha, bool bg_chan)
88 struct ipu_flow *flow = to_flow(dp);
89 struct ipu_dp_priv *priv = flow->priv;
92 mutex_lock(&priv->mutex);
94 reg = readl(flow->base + DP_COM_CONF);
96 reg &= ~DP_COM_CONF_GWSEL;
98 reg |= DP_COM_CONF_GWSEL;
99 writel(reg, flow->base + DP_COM_CONF);
102 reg = readl(flow->base + DP_GRAPH_WIND_CTRL) & 0x00FFFFFFL;
103 writel(reg | ((u32) alpha << 24),
104 flow->base + DP_GRAPH_WIND_CTRL);
106 reg = readl(flow->base + DP_COM_CONF);
107 writel(reg | DP_COM_CONF_GWAM, flow->base + DP_COM_CONF);
109 reg = readl(flow->base + DP_COM_CONF);
110 writel(reg & ~DP_COM_CONF_GWAM, flow->base + DP_COM_CONF);
113 ipu_srm_dp_sync_update(priv->ipu);
115 mutex_unlock(&priv->mutex);
119 EXPORT_SYMBOL_GPL(ipu_dp_set_global_alpha);
121 int ipu_dp_set_window_pos(struct ipu_dp *dp, u16 x_pos, u16 y_pos)
123 struct ipu_flow *flow = to_flow(dp);
124 struct ipu_dp_priv *priv = flow->priv;
126 writel((x_pos << 16) | y_pos, flow->base + DP_FG_POS);
128 ipu_srm_dp_sync_update(priv->ipu);
132 EXPORT_SYMBOL_GPL(ipu_dp_set_window_pos);
134 static void ipu_dp_csc_init(struct ipu_flow *flow,
135 enum ipu_color_space in,
136 enum ipu_color_space out,
141 reg = readl(flow->base + DP_COM_CONF);
142 reg &= ~DP_COM_CONF_CSC_DEF_MASK;
145 writel(reg, flow->base + DP_COM_CONF);
149 if (in == IPUV3_COLORSPACE_RGB && out == IPUV3_COLORSPACE_YUV) {
150 writel(0x099 | (0x12d << 16), flow->base + DP_CSC_A_0);
151 writel(0x03a | (0x3a9 << 16), flow->base + DP_CSC_A_1);
152 writel(0x356 | (0x100 << 16), flow->base + DP_CSC_A_2);
153 writel(0x100 | (0x329 << 16), flow->base + DP_CSC_A_3);
154 writel(0x3d6 | (0x0000 << 16) | (2 << 30),
155 flow->base + DP_CSC_0);
156 writel(0x200 | (2 << 14) | (0x200 << 16) | (2 << 30),
157 flow->base + DP_CSC_1);
159 writel(0x095 | (0x000 << 16), flow->base + DP_CSC_A_0);
160 writel(0x0cc | (0x095 << 16), flow->base + DP_CSC_A_1);
161 writel(0x3ce | (0x398 << 16), flow->base + DP_CSC_A_2);
162 writel(0x095 | (0x0ff << 16), flow->base + DP_CSC_A_3);
163 writel(0x000 | (0x3e42 << 16) | (1 << 30),
164 flow->base + DP_CSC_0);
165 writel(0x10a | (1 << 14) | (0x3dd6 << 16) | (1 << 30),
166 flow->base + DP_CSC_1);
171 writel(reg, flow->base + DP_COM_CONF);
174 int ipu_dp_setup_channel(struct ipu_dp *dp,
175 enum ipu_color_space in,
176 enum ipu_color_space out)
178 struct ipu_flow *flow = to_flow(dp);
179 struct ipu_dp_priv *priv = flow->priv;
181 mutex_lock(&priv->mutex);
188 if (flow->foreground.in_cs == flow->background.in_cs) {
190 * foreground and background are of same colorspace, put
191 * colorspace converter after combining unit.
193 ipu_dp_csc_init(flow, flow->foreground.in_cs, flow->out_cs,
194 DP_COM_CONF_CSC_DEF_BOTH);
196 if (flow->foreground.in_cs == flow->out_cs)
198 * foreground identical to output, apply color
199 * conversion on background
201 ipu_dp_csc_init(flow, flow->background.in_cs,
202 flow->out_cs, DP_COM_CONF_CSC_DEF_BG);
204 ipu_dp_csc_init(flow, flow->foreground.in_cs,
205 flow->out_cs, DP_COM_CONF_CSC_DEF_FG);
208 ipu_srm_dp_sync_update(priv->ipu);
210 mutex_unlock(&priv->mutex);
214 EXPORT_SYMBOL_GPL(ipu_dp_setup_channel);
216 int ipu_dp_enable_channel(struct ipu_dp *dp)
218 struct ipu_flow *flow = to_flow(dp);
219 struct ipu_dp_priv *priv = flow->priv;
221 mutex_lock(&priv->mutex);
223 if (!priv->use_count)
224 ipu_module_enable(priv->ipu, IPU_CONF_DP_EN);
228 if (dp->foreground) {
231 reg = readl(flow->base + DP_COM_CONF);
232 reg |= DP_COM_CONF_FG_EN;
233 writel(reg, flow->base + DP_COM_CONF);
235 ipu_srm_dp_sync_update(priv->ipu);
238 mutex_unlock(&priv->mutex);
242 EXPORT_SYMBOL_GPL(ipu_dp_enable_channel);
244 void ipu_dp_disable_channel(struct ipu_dp *dp)
246 struct ipu_flow *flow = to_flow(dp);
247 struct ipu_dp_priv *priv = flow->priv;
249 mutex_lock(&priv->mutex);
253 if (dp->foreground) {
256 reg = readl(flow->base + DP_COM_CONF);
257 csc = reg & DP_COM_CONF_CSC_DEF_MASK;
258 if (csc == DP_COM_CONF_CSC_DEF_FG)
259 reg &= ~DP_COM_CONF_CSC_DEF_MASK;
261 reg &= ~DP_COM_CONF_FG_EN;
262 writel(reg, flow->base + DP_COM_CONF);
264 writel(0, flow->base + DP_FG_POS);
265 ipu_srm_dp_sync_update(priv->ipu);
268 if (!priv->use_count)
269 ipu_module_disable(priv->ipu, IPU_CONF_DP_EN);
271 if (priv->use_count < 0)
274 mutex_unlock(&priv->mutex);
276 EXPORT_SYMBOL_GPL(ipu_dp_disable_channel);
278 struct ipu_dp *ipu_dp_get(struct ipu_soc *ipu, unsigned int flow)
280 struct ipu_dp_priv *priv = ipu->dp_priv;
284 return ERR_PTR(-EINVAL);
287 dp = &priv->flow[flow >> 1].foreground;
289 dp = &priv->flow[flow >> 1].background;
292 return ERR_PTR(-EBUSY);
298 EXPORT_SYMBOL_GPL(ipu_dp_get);
300 void ipu_dp_put(struct ipu_dp *dp)
304 EXPORT_SYMBOL_GPL(ipu_dp_put);
306 int ipu_dp_init(struct ipu_soc *ipu, struct device *dev, unsigned long base)
308 struct ipu_dp_priv *priv;
311 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
317 priv->base = devm_ioremap(dev, base, PAGE_SIZE);
323 mutex_init(&priv->mutex);
325 for (i = 0; i < 3; i++) {
326 priv->flow[i].foreground.foreground = 1;
327 priv->flow[i].base = priv->base + ipu_dp_flow_base[i];
328 priv->flow[i].priv = priv;
334 void ipu_dp_exit(struct ipu_soc *ipu)