1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2012-2016 Mentor Graphics Inc.
4 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
5 */
6 #include <linux/io.h>
7 #include "ipu-prv.h"
8
9 struct ipu_vdi {
10 void __iomem *base;
11 u32 module;
12 spinlock_t lock;
13 int use_count;
14 struct ipu_soc *ipu;
15 };
16
17
18 /* VDI Register Offsets */
19 #define VDI_FSIZE 0x0000
20 #define VDI_C 0x0004
21
22 /* VDI Register Fields */
23 #define VDI_C_CH_420 (0 << 1)
24 #define VDI_C_CH_422 (1 << 1)
25 #define VDI_C_MOT_SEL_MASK (0x3 << 2)
26 #define VDI_C_MOT_SEL_FULL (2 << 2)
27 #define VDI_C_MOT_SEL_LOW (1 << 2)
28 #define VDI_C_MOT_SEL_MED (0 << 2)
29 #define VDI_C_BURST_SIZE1_4 (3 << 4)
30 #define VDI_C_BURST_SIZE2_4 (3 << 8)
31 #define VDI_C_BURST_SIZE3_4 (3 << 12)
32 #define VDI_C_BURST_SIZE_MASK 0xF
33 #define VDI_C_BURST_SIZE1_OFFSET 4
34 #define VDI_C_BURST_SIZE2_OFFSET 8
35 #define VDI_C_BURST_SIZE3_OFFSET 12
36 #define VDI_C_VWM1_SET_1 (0 << 16)
37 #define VDI_C_VWM1_SET_2 (1 << 16)
38 #define VDI_C_VWM1_CLR_2 (1 << 19)
39 #define VDI_C_VWM3_SET_1 (0 << 22)
40 #define VDI_C_VWM3_SET_2 (1 << 22)
41 #define VDI_C_VWM3_CLR_2 (1 << 25)
42 #define VDI_C_TOP_FIELD_MAN_1 (1 << 30)
43 #define VDI_C_TOP_FIELD_AUTO_1 (1 << 31)
44
ipu_vdi_read(struct ipu_vdi * vdi,unsigned int offset)45 static inline u32 ipu_vdi_read(struct ipu_vdi *vdi, unsigned int offset)
46 {
47 return readl(vdi->base + offset);
48 }
49
ipu_vdi_write(struct ipu_vdi * vdi,u32 value,unsigned int offset)50 static inline void ipu_vdi_write(struct ipu_vdi *vdi, u32 value,
51 unsigned int offset)
52 {
53 writel(value, vdi->base + offset);
54 }
55
ipu_vdi_set_field_order(struct ipu_vdi * vdi,v4l2_std_id std,u32 field)56 void ipu_vdi_set_field_order(struct ipu_vdi *vdi, v4l2_std_id std, u32 field)
57 {
58 bool top_field_0 = false;
59 unsigned long flags;
60 u32 reg;
61
62 switch (field) {
63 case V4L2_FIELD_INTERLACED_TB:
64 case V4L2_FIELD_SEQ_TB:
65 case V4L2_FIELD_TOP:
66 top_field_0 = true;
67 break;
68 case V4L2_FIELD_INTERLACED_BT:
69 case V4L2_FIELD_SEQ_BT:
70 case V4L2_FIELD_BOTTOM:
71 top_field_0 = false;
72 break;
73 default:
74 top_field_0 = (std & V4L2_STD_525_60) ? true : false;
75 break;
76 }
77
78 spin_lock_irqsave(&vdi->lock, flags);
79
80 reg = ipu_vdi_read(vdi, VDI_C);
81 if (top_field_0)
82 reg &= ~(VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1);
83 else
84 reg |= VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1;
85 ipu_vdi_write(vdi, reg, VDI_C);
86
87 spin_unlock_irqrestore(&vdi->lock, flags);
88 }
89 EXPORT_SYMBOL_GPL(ipu_vdi_set_field_order);
90
ipu_vdi_set_motion(struct ipu_vdi * vdi,enum ipu_motion_sel motion_sel)91 void ipu_vdi_set_motion(struct ipu_vdi *vdi, enum ipu_motion_sel motion_sel)
92 {
93 unsigned long flags;
94 u32 reg;
95
96 spin_lock_irqsave(&vdi->lock, flags);
97
98 reg = ipu_vdi_read(vdi, VDI_C);
99
100 reg &= ~VDI_C_MOT_SEL_MASK;
101
102 switch (motion_sel) {
103 case MED_MOTION:
104 reg |= VDI_C_MOT_SEL_MED;
105 break;
106 case HIGH_MOTION:
107 reg |= VDI_C_MOT_SEL_FULL;
108 break;
109 default:
110 reg |= VDI_C_MOT_SEL_LOW;
111 break;
112 }
113
114 ipu_vdi_write(vdi, reg, VDI_C);
115
116 spin_unlock_irqrestore(&vdi->lock, flags);
117 }
118 EXPORT_SYMBOL_GPL(ipu_vdi_set_motion);
119
ipu_vdi_setup(struct ipu_vdi * vdi,u32 code,int xres,int yres)120 void ipu_vdi_setup(struct ipu_vdi *vdi, u32 code, int xres, int yres)
121 {
122 unsigned long flags;
123 u32 pixel_fmt, reg;
124
125 spin_lock_irqsave(&vdi->lock, flags);
126
127 reg = ((yres - 1) << 16) | (xres - 1);
128 ipu_vdi_write(vdi, reg, VDI_FSIZE);
129
130 /*
131 * Full motion, only vertical filter is used.
132 * Burst size is 4 accesses
133 */
134 if (code == MEDIA_BUS_FMT_UYVY8_2X8 ||
135 code == MEDIA_BUS_FMT_UYVY8_1X16 ||
136 code == MEDIA_BUS_FMT_YUYV8_2X8 ||
137 code == MEDIA_BUS_FMT_YUYV8_1X16)
138 pixel_fmt = VDI_C_CH_422;
139 else
140 pixel_fmt = VDI_C_CH_420;
141
142 reg = ipu_vdi_read(vdi, VDI_C);
143 reg |= pixel_fmt;
144 reg |= VDI_C_BURST_SIZE2_4;
145 reg |= VDI_C_BURST_SIZE1_4 | VDI_C_VWM1_CLR_2;
146 reg |= VDI_C_BURST_SIZE3_4 | VDI_C_VWM3_CLR_2;
147 ipu_vdi_write(vdi, reg, VDI_C);
148
149 spin_unlock_irqrestore(&vdi->lock, flags);
150 }
151 EXPORT_SYMBOL_GPL(ipu_vdi_setup);
152
ipu_vdi_unsetup(struct ipu_vdi * vdi)153 void ipu_vdi_unsetup(struct ipu_vdi *vdi)
154 {
155 unsigned long flags;
156
157 spin_lock_irqsave(&vdi->lock, flags);
158 ipu_vdi_write(vdi, 0, VDI_FSIZE);
159 ipu_vdi_write(vdi, 0, VDI_C);
160 spin_unlock_irqrestore(&vdi->lock, flags);
161 }
162 EXPORT_SYMBOL_GPL(ipu_vdi_unsetup);
163
ipu_vdi_enable(struct ipu_vdi * vdi)164 int ipu_vdi_enable(struct ipu_vdi *vdi)
165 {
166 unsigned long flags;
167
168 spin_lock_irqsave(&vdi->lock, flags);
169
170 if (!vdi->use_count)
171 ipu_module_enable(vdi->ipu, vdi->module);
172
173 vdi->use_count++;
174
175 spin_unlock_irqrestore(&vdi->lock, flags);
176
177 return 0;
178 }
179 EXPORT_SYMBOL_GPL(ipu_vdi_enable);
180
ipu_vdi_disable(struct ipu_vdi * vdi)181 int ipu_vdi_disable(struct ipu_vdi *vdi)
182 {
183 unsigned long flags;
184
185 spin_lock_irqsave(&vdi->lock, flags);
186
187 if (vdi->use_count) {
188 if (!--vdi->use_count)
189 ipu_module_disable(vdi->ipu, vdi->module);
190 }
191
192 spin_unlock_irqrestore(&vdi->lock, flags);
193
194 return 0;
195 }
196 EXPORT_SYMBOL_GPL(ipu_vdi_disable);
197
ipu_vdi_get(struct ipu_soc * ipu)198 struct ipu_vdi *ipu_vdi_get(struct ipu_soc *ipu)
199 {
200 return ipu->vdi_priv;
201 }
202 EXPORT_SYMBOL_GPL(ipu_vdi_get);
203
ipu_vdi_put(struct ipu_vdi * vdi)204 void ipu_vdi_put(struct ipu_vdi *vdi)
205 {
206 }
207 EXPORT_SYMBOL_GPL(ipu_vdi_put);
208
ipu_vdi_init(struct ipu_soc * ipu,struct device * dev,unsigned long base,u32 module)209 int ipu_vdi_init(struct ipu_soc *ipu, struct device *dev,
210 unsigned long base, u32 module)
211 {
212 struct ipu_vdi *vdi;
213
214 vdi = devm_kzalloc(dev, sizeof(*vdi), GFP_KERNEL);
215 if (!vdi)
216 return -ENOMEM;
217
218 ipu->vdi_priv = vdi;
219
220 spin_lock_init(&vdi->lock);
221 vdi->module = module;
222 vdi->base = devm_ioremap(dev, base, PAGE_SIZE);
223 if (!vdi->base)
224 return -ENOMEM;
225
226 dev_dbg(dev, "VDI base: 0x%08lx remapped to %p\n", base, vdi->base);
227 vdi->ipu = ipu;
228
229 return 0;
230 }
231
ipu_vdi_exit(struct ipu_soc * ipu)232 void ipu_vdi_exit(struct ipu_soc *ipu)
233 {
234 }
235