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
16 #include <linux/export.h>
17 #include <linux/module.h>
18 #include <linux/types.h>
19 #include <linux/errno.h>
20 #include <linux/delay.h>
23 #include "../imx-drm.h"
24 #include "imx-ipu-v3.h"
27 #define DC_MAP_CONF_PTR(n) (0x108 + ((n) & ~0x1) * 2)
28 #define DC_MAP_CONF_VAL(n) (0x144 + ((n) & ~0x1) * 2)
33 #define DC_EVT_NFIELD 3
35 #define DC_EVT_EOFIELD 5
36 #define DC_EVT_NEW_ADDR 6
37 #define DC_EVT_NEW_CHAN 7
38 #define DC_EVT_NEW_DATA 8
40 #define DC_EVT_NEW_ADDR_W_0 0
41 #define DC_EVT_NEW_ADDR_W_1 1
42 #define DC_EVT_NEW_CHAN_W_0 2
43 #define DC_EVT_NEW_CHAN_W_1 3
44 #define DC_EVT_NEW_DATA_W_0 4
45 #define DC_EVT_NEW_DATA_W_1 5
46 #define DC_EVT_NEW_ADDR_R_0 6
47 #define DC_EVT_NEW_ADDR_R_1 7
48 #define DC_EVT_NEW_CHAN_R_0 8
49 #define DC_EVT_NEW_CHAN_R_1 9
50 #define DC_EVT_NEW_DATA_R_0 10
51 #define DC_EVT_NEW_DATA_R_1 11
53 #define DC_WR_CH_CONF 0x0
54 #define DC_WR_CH_ADDR 0x4
55 #define DC_RL_CH(evt) (8 + ((evt) & ~0x1) * 2)
58 #define DC_DISP_CONF1(disp) (0xd8 + (disp) * 4)
59 #define DC_DISP_CONF2(disp) (0xe8 + (disp) * 4)
62 #define WROD(lf) (0x18 | ((lf) << 1))
67 #define NULL_WAVE (-1)
69 #define DC_GEN_SYNC_1_6_SYNC (2 << 1)
70 #define DC_GEN_SYNC_PRIORITY_1 (1 << 7)
72 #define DC_WR_CH_CONF_WORD_SIZE_8 (0 << 0)
73 #define DC_WR_CH_CONF_WORD_SIZE_16 (1 << 0)
74 #define DC_WR_CH_CONF_WORD_SIZE_24 (2 << 0)
75 #define DC_WR_CH_CONF_WORD_SIZE_32 (3 << 0)
76 #define DC_WR_CH_CONF_DISP_ID_PARALLEL(i) (((i) & 0x1) << 3)
77 #define DC_WR_CH_CONF_DISP_ID_SERIAL (2 << 3)
78 #define DC_WR_CH_CONF_DISP_ID_ASYNC (3 << 4)
79 #define DC_WR_CH_CONF_FIELD_MODE (1 << 9)
80 #define DC_WR_CH_CONF_PROG_TYPE_NORMAL (4 << 5)
81 #define DC_WR_CH_CONF_PROG_TYPE_MASK (7 << 5)
82 #define DC_WR_CH_CONF_PROG_DI_ID (1 << 2)
83 #define DC_WR_CH_CONF_PROG_DISP_ID(i) (((i) & 0x1) << 3)
85 #define IPU_DC_NUM_CHANNELS 10
92 IPU_DC_MAP_GBR24, /* TVEv2 */
98 /* The display interface number assigned to this dc channel */
101 struct ipu_dc_priv *priv;
107 void __iomem *dc_reg;
108 void __iomem *dc_tmpl_reg;
111 struct ipu_dc channels[IPU_DC_NUM_CHANNELS];
115 static void dc_link_event(struct ipu_dc *dc, int event, int addr, int priority)
119 reg = readl(dc->base + DC_RL_CH(event));
120 reg &= ~(0xffff << (16 * (event & 0x1)));
121 reg |= ((addr << 8) | priority) << (16 * (event & 0x1));
122 writel(reg, dc->base + DC_RL_CH(event));
125 static void dc_write_tmpl(struct ipu_dc *dc, int word, u32 opcode, u32 operand,
126 int map, int wave, int glue, int sync, int stop)
128 struct ipu_dc_priv *priv = dc->priv;
131 if (opcode == WCLK) {
132 reg1 = (operand << 20) & 0xfff00000;
133 reg2 = operand >> 12 | opcode << 1 | stop << 9;
134 } else if (opcode == WRG) {
135 reg1 = sync | glue << 4 | ++wave << 11 | ((operand << 15) & 0xffff8000);
136 reg2 = operand >> 17 | opcode << 7 | stop << 9;
138 reg1 = sync | glue << 4 | ++wave << 11 | ++map << 15 | ((operand << 20) & 0xfff00000);
139 reg2 = operand >> 12 | opcode << 4 | stop << 9;
141 writel(reg1, priv->dc_tmpl_reg + word * 8);
142 writel(reg2, priv->dc_tmpl_reg + word * 8 + 4);
145 static int ipu_pixfmt_to_map(u32 fmt)
148 case V4L2_PIX_FMT_RGB24:
149 return IPU_DC_MAP_RGB24;
150 case V4L2_PIX_FMT_RGB565:
151 return IPU_DC_MAP_RGB565;
152 case IPU_PIX_FMT_GBR24:
153 return IPU_DC_MAP_GBR24;
154 case V4L2_PIX_FMT_BGR666:
155 return IPU_DC_MAP_BGR666;
156 case V4L2_PIX_FMT_BGR24:
157 return IPU_DC_MAP_BGR24;
163 int ipu_dc_init_sync(struct ipu_dc *dc, struct ipu_di *di, bool interlaced,
164 u32 pixel_fmt, u32 width)
166 struct ipu_dc_priv *priv = dc->priv;
170 dc->di = ipu_di_get_num(di);
172 map = ipu_pixfmt_to_map(pixel_fmt);
174 dev_dbg(priv->dev, "IPU_DISP: No MAP\n");
179 dc_link_event(dc, DC_EVT_NL, 0, 3);
180 dc_link_event(dc, DC_EVT_EOL, 0, 2);
181 dc_link_event(dc, DC_EVT_NEW_DATA, 0, 1);
183 /* Init template microcode */
184 dc_write_tmpl(dc, 0, WROD(0), 0, map, SYNC_WAVE, 0, 8, 1);
187 dc_link_event(dc, DC_EVT_NL, 2, 3);
188 dc_link_event(dc, DC_EVT_EOL, 3, 2);
189 dc_link_event(dc, DC_EVT_NEW_DATA, 1, 1);
190 /* Init template microcode */
191 dc_write_tmpl(dc, 2, WROD(0), 0, map, SYNC_WAVE, 8, 5, 1);
192 dc_write_tmpl(dc, 3, WROD(0), 0, map, SYNC_WAVE, 4, 5, 0);
193 dc_write_tmpl(dc, 4, WRG, 0, map, NULL_WAVE, 0, 0, 1);
194 dc_write_tmpl(dc, 1, WROD(0), 0, map, SYNC_WAVE, 0, 5, 1);
196 dc_link_event(dc, DC_EVT_NL, 5, 3);
197 dc_link_event(dc, DC_EVT_EOL, 6, 2);
198 dc_link_event(dc, DC_EVT_NEW_DATA, 8, 1);
199 /* Init template microcode */
200 dc_write_tmpl(dc, 5, WROD(0), 0, map, SYNC_WAVE, 8, 5, 1);
201 dc_write_tmpl(dc, 6, WROD(0), 0, map, SYNC_WAVE, 4, 5, 0);
202 dc_write_tmpl(dc, 7, WRG, 0, map, NULL_WAVE, 0, 0, 1);
203 dc_write_tmpl(dc, 8, WROD(0), 0, map, SYNC_WAVE, 0, 5, 1);
206 dc_link_event(dc, DC_EVT_NF, 0, 0);
207 dc_link_event(dc, DC_EVT_NFIELD, 0, 0);
208 dc_link_event(dc, DC_EVT_EOF, 0, 0);
209 dc_link_event(dc, DC_EVT_EOFIELD, 0, 0);
210 dc_link_event(dc, DC_EVT_NEW_CHAN, 0, 0);
211 dc_link_event(dc, DC_EVT_NEW_ADDR, 0, 0);
213 reg = readl(dc->base + DC_WR_CH_CONF);
215 reg |= DC_WR_CH_CONF_FIELD_MODE;
217 reg &= ~DC_WR_CH_CONF_FIELD_MODE;
218 writel(reg, dc->base + DC_WR_CH_CONF);
220 writel(0x0, dc->base + DC_WR_CH_ADDR);
221 writel(width, priv->dc_reg + DC_DISP_CONF2(dc->di));
223 ipu_module_enable(priv->ipu, IPU_CONF_DC_EN);
227 EXPORT_SYMBOL_GPL(ipu_dc_init_sync);
229 void ipu_dc_enable_channel(struct ipu_dc *dc)
236 reg = readl(dc->base + DC_WR_CH_CONF);
237 reg |= DC_WR_CH_CONF_PROG_TYPE_NORMAL;
238 writel(reg, dc->base + DC_WR_CH_CONF);
240 EXPORT_SYMBOL_GPL(ipu_dc_enable_channel);
242 void ipu_dc_disable_channel(struct ipu_dc *dc)
244 struct ipu_dc_priv *priv = dc->priv;
246 int irq = 0, timeout = 50;
249 irq = IPU_IRQ_DC_FC_1;
250 else if (dc->chno == 5)
251 irq = IPU_IRQ_DP_SF_END;
255 /* should wait for the interrupt here */
263 /* Wait for DC triple buffer to empty */
264 while ((readl(priv->dc_reg + DC_STAT) & val) != val) {
271 val = readl(dc->base + DC_WR_CH_CONF);
272 val &= ~DC_WR_CH_CONF_PROG_TYPE_MASK;
273 writel(val, dc->base + DC_WR_CH_CONF);
275 EXPORT_SYMBOL_GPL(ipu_dc_disable_channel);
277 static void ipu_dc_map_config(struct ipu_dc_priv *priv, enum ipu_dc_map map,
278 int byte_num, int offset, int mask)
280 int ptr = map * 3 + byte_num;
283 reg = readl(priv->dc_reg + DC_MAP_CONF_VAL(ptr));
284 reg &= ~(0xffff << (16 * (ptr & 0x1)));
285 reg |= ((offset << 8) | mask) << (16 * (ptr & 0x1));
286 writel(reg, priv->dc_reg + DC_MAP_CONF_VAL(ptr));
288 reg = readl(priv->dc_reg + DC_MAP_CONF_PTR(map));
289 reg &= ~(0x1f << ((16 * (map & 0x1)) + (5 * byte_num)));
290 reg |= ptr << ((16 * (map & 0x1)) + (5 * byte_num));
291 writel(reg, priv->dc_reg + DC_MAP_CONF_PTR(map));
294 static void ipu_dc_map_clear(struct ipu_dc_priv *priv, int map)
296 u32 reg = readl(priv->dc_reg + DC_MAP_CONF_PTR(map));
298 writel(reg & ~(0xffff << (16 * (map & 0x1))),
299 priv->dc_reg + DC_MAP_CONF_PTR(map));
302 struct ipu_dc *ipu_dc_get(struct ipu_soc *ipu, int channel)
304 struct ipu_dc_priv *priv = ipu->dc_priv;
307 if (channel >= IPU_DC_NUM_CHANNELS)
308 return ERR_PTR(-ENODEV);
310 dc = &priv->channels[channel];
312 mutex_lock(&priv->mutex);
315 mutex_unlock(&priv->mutex);
316 return ERR_PTR(-EBUSY);
321 mutex_unlock(&priv->mutex);
325 EXPORT_SYMBOL_GPL(ipu_dc_get);
327 void ipu_dc_put(struct ipu_dc *dc)
329 struct ipu_dc_priv *priv = dc->priv;
331 mutex_lock(&priv->mutex);
333 mutex_unlock(&priv->mutex);
335 EXPORT_SYMBOL_GPL(ipu_dc_put);
337 int ipu_dc_init(struct ipu_soc *ipu, struct device *dev,
338 unsigned long base, unsigned long template_base)
340 struct ipu_dc_priv *priv;
341 static int channel_offsets[] = { 0, 0x1c, 0x38, 0x54, 0x58, 0x5c,
342 0x78, 0, 0x94, 0xb4};
345 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
349 mutex_init(&priv->mutex);
353 priv->dc_reg = devm_ioremap(dev, base, PAGE_SIZE);
354 priv->dc_tmpl_reg = devm_ioremap(dev, template_base, PAGE_SIZE);
355 if (!priv->dc_reg || !priv->dc_tmpl_reg)
358 for (i = 0; i < IPU_DC_NUM_CHANNELS; i++) {
359 priv->channels[i].chno = i;
360 priv->channels[i].priv = priv;
361 priv->channels[i].base = priv->dc_reg + channel_offsets[i];
364 writel(DC_WR_CH_CONF_WORD_SIZE_24 | DC_WR_CH_CONF_DISP_ID_PARALLEL(1) |
365 DC_WR_CH_CONF_PROG_DI_ID,
366 priv->channels[1].base + DC_WR_CH_CONF);
367 writel(DC_WR_CH_CONF_WORD_SIZE_24 | DC_WR_CH_CONF_DISP_ID_PARALLEL(0),
368 priv->channels[5].base + DC_WR_CH_CONF);
370 writel(DC_GEN_SYNC_1_6_SYNC | DC_GEN_SYNC_PRIORITY_1, priv->dc_reg + DC_GEN);
374 dev_dbg(dev, "DC base: 0x%08lx template base: 0x%08lx\n",
375 base, template_base);
378 ipu_dc_map_clear(priv, IPU_DC_MAP_RGB24);
379 ipu_dc_map_config(priv, IPU_DC_MAP_RGB24, 0, 7, 0xff); /* blue */
380 ipu_dc_map_config(priv, IPU_DC_MAP_RGB24, 1, 15, 0xff); /* green */
381 ipu_dc_map_config(priv, IPU_DC_MAP_RGB24, 2, 23, 0xff); /* red */
384 ipu_dc_map_clear(priv, IPU_DC_MAP_RGB565);
385 ipu_dc_map_config(priv, IPU_DC_MAP_RGB565, 0, 4, 0xf8); /* blue */
386 ipu_dc_map_config(priv, IPU_DC_MAP_RGB565, 1, 10, 0xfc); /* green */
387 ipu_dc_map_config(priv, IPU_DC_MAP_RGB565, 2, 15, 0xf8); /* red */
390 ipu_dc_map_clear(priv, IPU_DC_MAP_GBR24);
391 ipu_dc_map_config(priv, IPU_DC_MAP_GBR24, 2, 15, 0xff); /* green */
392 ipu_dc_map_config(priv, IPU_DC_MAP_GBR24, 1, 7, 0xff); /* blue */
393 ipu_dc_map_config(priv, IPU_DC_MAP_GBR24, 0, 23, 0xff); /* red */
396 ipu_dc_map_clear(priv, IPU_DC_MAP_BGR666);
397 ipu_dc_map_config(priv, IPU_DC_MAP_BGR666, 0, 5, 0xfc); /* blue */
398 ipu_dc_map_config(priv, IPU_DC_MAP_BGR666, 1, 11, 0xfc); /* green */
399 ipu_dc_map_config(priv, IPU_DC_MAP_BGR666, 2, 17, 0xfc); /* red */
402 ipu_dc_map_clear(priv, IPU_DC_MAP_BGR24);
403 ipu_dc_map_config(priv, IPU_DC_MAP_BGR24, 2, 7, 0xff); /* red */
404 ipu_dc_map_config(priv, IPU_DC_MAP_BGR24, 1, 15, 0xff); /* green */
405 ipu_dc_map_config(priv, IPU_DC_MAP_BGR24, 0, 23, 0xff); /* blue */
410 void ipu_dc_exit(struct ipu_soc *ipu)