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2d2ead45 SL |
1 | /* |
2 | * Copyright (C) 2012-2016 Mentor Graphics Inc. | |
3 | * Copyright (C) 2005-2009 Freescale Semiconductor, Inc. | |
4 | * | |
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. | |
9 | * | |
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 | |
13 | * for more details. | |
14 | */ | |
15 | #include <linux/io.h> | |
16 | #include "ipu-prv.h" | |
17 | ||
18 | struct ipu_vdi { | |
19 | void __iomem *base; | |
20 | u32 module; | |
21 | spinlock_t lock; | |
22 | int use_count; | |
23 | struct ipu_soc *ipu; | |
24 | }; | |
25 | ||
26 | ||
27 | /* VDI Register Offsets */ | |
28 | #define VDI_FSIZE 0x0000 | |
29 | #define VDI_C 0x0004 | |
30 | ||
31 | /* VDI Register Fields */ | |
32 | #define VDI_C_CH_420 (0 << 1) | |
33 | #define VDI_C_CH_422 (1 << 1) | |
34 | #define VDI_C_MOT_SEL_MASK (0x3 << 2) | |
35 | #define VDI_C_MOT_SEL_FULL (2 << 2) | |
36 | #define VDI_C_MOT_SEL_LOW (1 << 2) | |
37 | #define VDI_C_MOT_SEL_MED (0 << 2) | |
38 | #define VDI_C_BURST_SIZE1_4 (3 << 4) | |
39 | #define VDI_C_BURST_SIZE2_4 (3 << 8) | |
40 | #define VDI_C_BURST_SIZE3_4 (3 << 12) | |
41 | #define VDI_C_BURST_SIZE_MASK 0xF | |
42 | #define VDI_C_BURST_SIZE1_OFFSET 4 | |
43 | #define VDI_C_BURST_SIZE2_OFFSET 8 | |
44 | #define VDI_C_BURST_SIZE3_OFFSET 12 | |
45 | #define VDI_C_VWM1_SET_1 (0 << 16) | |
46 | #define VDI_C_VWM1_SET_2 (1 << 16) | |
47 | #define VDI_C_VWM1_CLR_2 (1 << 19) | |
48 | #define VDI_C_VWM3_SET_1 (0 << 22) | |
49 | #define VDI_C_VWM3_SET_2 (1 << 22) | |
50 | #define VDI_C_VWM3_CLR_2 (1 << 25) | |
51 | #define VDI_C_TOP_FIELD_MAN_1 (1 << 30) | |
52 | #define VDI_C_TOP_FIELD_AUTO_1 (1 << 31) | |
53 | ||
54 | static inline u32 ipu_vdi_read(struct ipu_vdi *vdi, unsigned int offset) | |
55 | { | |
56 | return readl(vdi->base + offset); | |
57 | } | |
58 | ||
59 | static inline void ipu_vdi_write(struct ipu_vdi *vdi, u32 value, | |
60 | unsigned int offset) | |
61 | { | |
62 | writel(value, vdi->base + offset); | |
63 | } | |
64 | ||
65 | void ipu_vdi_set_field_order(struct ipu_vdi *vdi, v4l2_std_id std, u32 field) | |
66 | { | |
67 | bool top_field_0 = false; | |
68 | unsigned long flags; | |
69 | u32 reg; | |
70 | ||
71 | switch (field) { | |
72 | case V4L2_FIELD_INTERLACED_TB: | |
73 | case V4L2_FIELD_SEQ_TB: | |
74 | case V4L2_FIELD_TOP: | |
75 | top_field_0 = true; | |
76 | break; | |
77 | case V4L2_FIELD_INTERLACED_BT: | |
78 | case V4L2_FIELD_SEQ_BT: | |
79 | case V4L2_FIELD_BOTTOM: | |
80 | top_field_0 = false; | |
81 | break; | |
82 | default: | |
83 | top_field_0 = (std & V4L2_STD_525_60) ? true : false; | |
84 | break; | |
85 | } | |
86 | ||
87 | spin_lock_irqsave(&vdi->lock, flags); | |
88 | ||
89 | reg = ipu_vdi_read(vdi, VDI_C); | |
90 | if (top_field_0) | |
add13187 | 91 | reg &= ~(VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1); |
2d2ead45 | 92 | else |
add13187 | 93 | reg |= VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1; |
2d2ead45 SL |
94 | ipu_vdi_write(vdi, reg, VDI_C); |
95 | ||
96 | spin_unlock_irqrestore(&vdi->lock, flags); | |
97 | } | |
98 | EXPORT_SYMBOL_GPL(ipu_vdi_set_field_order); | |
99 | ||
100 | void ipu_vdi_set_motion(struct ipu_vdi *vdi, enum ipu_motion_sel motion_sel) | |
101 | { | |
102 | unsigned long flags; | |
103 | u32 reg; | |
104 | ||
105 | spin_lock_irqsave(&vdi->lock, flags); | |
106 | ||
107 | reg = ipu_vdi_read(vdi, VDI_C); | |
108 | ||
109 | reg &= ~VDI_C_MOT_SEL_MASK; | |
110 | ||
111 | switch (motion_sel) { | |
112 | case MED_MOTION: | |
113 | reg |= VDI_C_MOT_SEL_MED; | |
114 | break; | |
115 | case HIGH_MOTION: | |
116 | reg |= VDI_C_MOT_SEL_FULL; | |
117 | break; | |
118 | default: | |
119 | reg |= VDI_C_MOT_SEL_LOW; | |
120 | break; | |
121 | } | |
122 | ||
123 | ipu_vdi_write(vdi, reg, VDI_C); | |
124 | ||
125 | spin_unlock_irqrestore(&vdi->lock, flags); | |
126 | } | |
127 | EXPORT_SYMBOL_GPL(ipu_vdi_set_motion); | |
128 | ||
129 | void ipu_vdi_setup(struct ipu_vdi *vdi, u32 code, int xres, int yres) | |
130 | { | |
131 | unsigned long flags; | |
132 | u32 pixel_fmt, reg; | |
133 | ||
134 | spin_lock_irqsave(&vdi->lock, flags); | |
135 | ||
136 | reg = ((yres - 1) << 16) | (xres - 1); | |
137 | ipu_vdi_write(vdi, reg, VDI_FSIZE); | |
138 | ||
139 | /* | |
140 | * Full motion, only vertical filter is used. | |
141 | * Burst size is 4 accesses | |
142 | */ | |
143 | if (code == MEDIA_BUS_FMT_UYVY8_2X8 || | |
144 | code == MEDIA_BUS_FMT_UYVY8_1X16 || | |
145 | code == MEDIA_BUS_FMT_YUYV8_2X8 || | |
146 | code == MEDIA_BUS_FMT_YUYV8_1X16) | |
147 | pixel_fmt = VDI_C_CH_422; | |
148 | else | |
149 | pixel_fmt = VDI_C_CH_420; | |
150 | ||
151 | reg = ipu_vdi_read(vdi, VDI_C); | |
152 | reg |= pixel_fmt; | |
153 | reg |= VDI_C_BURST_SIZE2_4; | |
154 | reg |= VDI_C_BURST_SIZE1_4 | VDI_C_VWM1_CLR_2; | |
155 | reg |= VDI_C_BURST_SIZE3_4 | VDI_C_VWM3_CLR_2; | |
156 | ipu_vdi_write(vdi, reg, VDI_C); | |
157 | ||
158 | spin_unlock_irqrestore(&vdi->lock, flags); | |
159 | } | |
160 | EXPORT_SYMBOL_GPL(ipu_vdi_setup); | |
161 | ||
162 | void ipu_vdi_unsetup(struct ipu_vdi *vdi) | |
163 | { | |
164 | unsigned long flags; | |
165 | ||
166 | spin_lock_irqsave(&vdi->lock, flags); | |
167 | ipu_vdi_write(vdi, 0, VDI_FSIZE); | |
168 | ipu_vdi_write(vdi, 0, VDI_C); | |
169 | spin_unlock_irqrestore(&vdi->lock, flags); | |
170 | } | |
171 | EXPORT_SYMBOL_GPL(ipu_vdi_unsetup); | |
172 | ||
173 | int ipu_vdi_enable(struct ipu_vdi *vdi) | |
174 | { | |
175 | unsigned long flags; | |
176 | ||
177 | spin_lock_irqsave(&vdi->lock, flags); | |
178 | ||
179 | if (!vdi->use_count) | |
180 | ipu_module_enable(vdi->ipu, vdi->module); | |
181 | ||
182 | vdi->use_count++; | |
183 | ||
184 | spin_unlock_irqrestore(&vdi->lock, flags); | |
185 | ||
186 | return 0; | |
187 | } | |
188 | EXPORT_SYMBOL_GPL(ipu_vdi_enable); | |
189 | ||
190 | int ipu_vdi_disable(struct ipu_vdi *vdi) | |
191 | { | |
192 | unsigned long flags; | |
193 | ||
194 | spin_lock_irqsave(&vdi->lock, flags); | |
195 | ||
196 | if (vdi->use_count) { | |
197 | if (!--vdi->use_count) | |
198 | ipu_module_disable(vdi->ipu, vdi->module); | |
199 | } | |
200 | ||
201 | spin_unlock_irqrestore(&vdi->lock, flags); | |
202 | ||
203 | return 0; | |
204 | } | |
205 | EXPORT_SYMBOL_GPL(ipu_vdi_disable); | |
206 | ||
207 | struct ipu_vdi *ipu_vdi_get(struct ipu_soc *ipu) | |
208 | { | |
209 | return ipu->vdi_priv; | |
210 | } | |
211 | EXPORT_SYMBOL_GPL(ipu_vdi_get); | |
212 | ||
213 | void ipu_vdi_put(struct ipu_vdi *vdi) | |
214 | { | |
215 | } | |
216 | EXPORT_SYMBOL_GPL(ipu_vdi_put); | |
217 | ||
218 | int ipu_vdi_init(struct ipu_soc *ipu, struct device *dev, | |
219 | unsigned long base, u32 module) | |
220 | { | |
221 | struct ipu_vdi *vdi; | |
222 | ||
223 | vdi = devm_kzalloc(dev, sizeof(*vdi), GFP_KERNEL); | |
224 | if (!vdi) | |
225 | return -ENOMEM; | |
226 | ||
227 | ipu->vdi_priv = vdi; | |
228 | ||
229 | spin_lock_init(&vdi->lock); | |
230 | vdi->module = module; | |
231 | vdi->base = devm_ioremap(dev, base, PAGE_SIZE); | |
232 | if (!vdi->base) | |
233 | return -ENOMEM; | |
234 | ||
235 | dev_dbg(dev, "VDI base: 0x%08lx remapped to %p\n", base, vdi->base); | |
236 | vdi->ipu = ipu; | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | void ipu_vdi_exit(struct ipu_soc *ipu) | |
242 | { | |
243 | } |