Steve Longerbeam | 2d2ead4 | 2016-08-17 17:50:16 -0700 | [diff] [blame] | 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) |
| 91 | reg &= ~VDI_C_TOP_FIELD_MAN_1; |
| 92 | else |
| 93 | reg |= VDI_C_TOP_FIELD_MAN_1; |
| 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 | } |