1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2012-2016 Mentor Graphics Inc.
4 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
18 /* VDI Register Offsets */
19 #define VDI_FSIZE 0x0000
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)
45 static inline u32 ipu_vdi_read(struct ipu_vdi *vdi, unsigned int offset)
47 return readl(vdi->base + offset);
50 static inline void ipu_vdi_write(struct ipu_vdi *vdi, u32 value,
53 writel(value, vdi->base + offset);
56 void ipu_vdi_set_field_order(struct ipu_vdi *vdi, v4l2_std_id std, u32 field)
58 bool top_field_0 = false;
63 case V4L2_FIELD_INTERLACED_TB:
64 case V4L2_FIELD_SEQ_TB:
68 case V4L2_FIELD_INTERLACED_BT:
69 case V4L2_FIELD_SEQ_BT:
70 case V4L2_FIELD_BOTTOM:
74 top_field_0 = (std & V4L2_STD_525_60) ? true : false;
78 spin_lock_irqsave(&vdi->lock, flags);
80 reg = ipu_vdi_read(vdi, VDI_C);
82 reg &= ~(VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1);
84 reg |= VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1;
85 ipu_vdi_write(vdi, reg, VDI_C);
87 spin_unlock_irqrestore(&vdi->lock, flags);
89 EXPORT_SYMBOL_GPL(ipu_vdi_set_field_order);
91 void ipu_vdi_set_motion(struct ipu_vdi *vdi, enum ipu_motion_sel motion_sel)
96 spin_lock_irqsave(&vdi->lock, flags);
98 reg = ipu_vdi_read(vdi, VDI_C);
100 reg &= ~VDI_C_MOT_SEL_MASK;
102 switch (motion_sel) {
104 reg |= VDI_C_MOT_SEL_MED;
107 reg |= VDI_C_MOT_SEL_FULL;
110 reg |= VDI_C_MOT_SEL_LOW;
114 ipu_vdi_write(vdi, reg, VDI_C);
116 spin_unlock_irqrestore(&vdi->lock, flags);
118 EXPORT_SYMBOL_GPL(ipu_vdi_set_motion);
120 void ipu_vdi_setup(struct ipu_vdi *vdi, u32 code, int xres, int yres)
125 spin_lock_irqsave(&vdi->lock, flags);
127 reg = ((yres - 1) << 16) | (xres - 1);
128 ipu_vdi_write(vdi, reg, VDI_FSIZE);
131 * Full motion, only vertical filter is used.
132 * Burst size is 4 accesses
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;
140 pixel_fmt = VDI_C_CH_420;
142 reg = ipu_vdi_read(vdi, VDI_C);
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);
149 spin_unlock_irqrestore(&vdi->lock, flags);
151 EXPORT_SYMBOL_GPL(ipu_vdi_setup);
153 void ipu_vdi_unsetup(struct ipu_vdi *vdi)
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);
162 EXPORT_SYMBOL_GPL(ipu_vdi_unsetup);
164 int ipu_vdi_enable(struct ipu_vdi *vdi)
168 spin_lock_irqsave(&vdi->lock, flags);
171 ipu_module_enable(vdi->ipu, vdi->module);
175 spin_unlock_irqrestore(&vdi->lock, flags);
179 EXPORT_SYMBOL_GPL(ipu_vdi_enable);
181 int ipu_vdi_disable(struct ipu_vdi *vdi)
185 spin_lock_irqsave(&vdi->lock, flags);
187 if (vdi->use_count) {
188 if (!--vdi->use_count)
189 ipu_module_disable(vdi->ipu, vdi->module);
192 spin_unlock_irqrestore(&vdi->lock, flags);
196 EXPORT_SYMBOL_GPL(ipu_vdi_disable);
198 struct ipu_vdi *ipu_vdi_get(struct ipu_soc *ipu)
200 return ipu->vdi_priv;
202 EXPORT_SYMBOL_GPL(ipu_vdi_get);
204 void ipu_vdi_put(struct ipu_vdi *vdi)
207 EXPORT_SYMBOL_GPL(ipu_vdi_put);
209 int ipu_vdi_init(struct ipu_soc *ipu, struct device *dev,
210 unsigned long base, u32 module)
214 vdi = devm_kzalloc(dev, sizeof(*vdi), GFP_KERNEL);
220 spin_lock_init(&vdi->lock);
221 vdi->module = module;
222 vdi->base = devm_ioremap(dev, base, PAGE_SIZE);
226 dev_dbg(dev, "VDI base: 0x%08lx remapped to %p\n", base, vdi->base);
232 void ipu_vdi_exit(struct ipu_soc *ipu)