| /* |
| * Copyright (C) 2012-2016 Mentor Graphics Inc. |
| * Copyright (C) 2005-2009 Freescale Semiconductor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| */ |
| #include <linux/io.h> |
| #include "ipu-prv.h" |
| |
| struct ipu_vdi { |
| void __iomem *base; |
| u32 module; |
| spinlock_t lock; |
| int use_count; |
| struct ipu_soc *ipu; |
| }; |
| |
| |
| /* VDI Register Offsets */ |
| #define VDI_FSIZE 0x0000 |
| #define VDI_C 0x0004 |
| |
| /* VDI Register Fields */ |
| #define VDI_C_CH_420 (0 << 1) |
| #define VDI_C_CH_422 (1 << 1) |
| #define VDI_C_MOT_SEL_MASK (0x3 << 2) |
| #define VDI_C_MOT_SEL_FULL (2 << 2) |
| #define VDI_C_MOT_SEL_LOW (1 << 2) |
| #define VDI_C_MOT_SEL_MED (0 << 2) |
| #define VDI_C_BURST_SIZE1_4 (3 << 4) |
| #define VDI_C_BURST_SIZE2_4 (3 << 8) |
| #define VDI_C_BURST_SIZE3_4 (3 << 12) |
| #define VDI_C_BURST_SIZE_MASK 0xF |
| #define VDI_C_BURST_SIZE1_OFFSET 4 |
| #define VDI_C_BURST_SIZE2_OFFSET 8 |
| #define VDI_C_BURST_SIZE3_OFFSET 12 |
| #define VDI_C_VWM1_SET_1 (0 << 16) |
| #define VDI_C_VWM1_SET_2 (1 << 16) |
| #define VDI_C_VWM1_CLR_2 (1 << 19) |
| #define VDI_C_VWM3_SET_1 (0 << 22) |
| #define VDI_C_VWM3_SET_2 (1 << 22) |
| #define VDI_C_VWM3_CLR_2 (1 << 25) |
| #define VDI_C_TOP_FIELD_MAN_1 (1 << 30) |
| #define VDI_C_TOP_FIELD_AUTO_1 (1 << 31) |
| |
| static inline u32 ipu_vdi_read(struct ipu_vdi *vdi, unsigned int offset) |
| { |
| return readl(vdi->base + offset); |
| } |
| |
| static inline void ipu_vdi_write(struct ipu_vdi *vdi, u32 value, |
| unsigned int offset) |
| { |
| writel(value, vdi->base + offset); |
| } |
| |
| void ipu_vdi_set_field_order(struct ipu_vdi *vdi, v4l2_std_id std, u32 field) |
| { |
| bool top_field_0 = false; |
| unsigned long flags; |
| u32 reg; |
| |
| switch (field) { |
| case V4L2_FIELD_INTERLACED_TB: |
| case V4L2_FIELD_SEQ_TB: |
| case V4L2_FIELD_TOP: |
| top_field_0 = true; |
| break; |
| case V4L2_FIELD_INTERLACED_BT: |
| case V4L2_FIELD_SEQ_BT: |
| case V4L2_FIELD_BOTTOM: |
| top_field_0 = false; |
| break; |
| default: |
| top_field_0 = (std & V4L2_STD_525_60) ? true : false; |
| break; |
| } |
| |
| spin_lock_irqsave(&vdi->lock, flags); |
| |
| reg = ipu_vdi_read(vdi, VDI_C); |
| if (top_field_0) |
| reg &= ~(VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1); |
| else |
| reg |= VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1; |
| ipu_vdi_write(vdi, reg, VDI_C); |
| |
| spin_unlock_irqrestore(&vdi->lock, flags); |
| } |
| EXPORT_SYMBOL_GPL(ipu_vdi_set_field_order); |
| |
| void ipu_vdi_set_motion(struct ipu_vdi *vdi, enum ipu_motion_sel motion_sel) |
| { |
| unsigned long flags; |
| u32 reg; |
| |
| spin_lock_irqsave(&vdi->lock, flags); |
| |
| reg = ipu_vdi_read(vdi, VDI_C); |
| |
| reg &= ~VDI_C_MOT_SEL_MASK; |
| |
| switch (motion_sel) { |
| case MED_MOTION: |
| reg |= VDI_C_MOT_SEL_MED; |
| break; |
| case HIGH_MOTION: |
| reg |= VDI_C_MOT_SEL_FULL; |
| break; |
| default: |
| reg |= VDI_C_MOT_SEL_LOW; |
| break; |
| } |
| |
| ipu_vdi_write(vdi, reg, VDI_C); |
| |
| spin_unlock_irqrestore(&vdi->lock, flags); |
| } |
| EXPORT_SYMBOL_GPL(ipu_vdi_set_motion); |
| |
| void ipu_vdi_setup(struct ipu_vdi *vdi, u32 code, int xres, int yres) |
| { |
| unsigned long flags; |
| u32 pixel_fmt, reg; |
| |
| spin_lock_irqsave(&vdi->lock, flags); |
| |
| reg = ((yres - 1) << 16) | (xres - 1); |
| ipu_vdi_write(vdi, reg, VDI_FSIZE); |
| |
| /* |
| * Full motion, only vertical filter is used. |
| * Burst size is 4 accesses |
| */ |
| if (code == MEDIA_BUS_FMT_UYVY8_2X8 || |
| code == MEDIA_BUS_FMT_UYVY8_1X16 || |
| code == MEDIA_BUS_FMT_YUYV8_2X8 || |
| code == MEDIA_BUS_FMT_YUYV8_1X16) |
| pixel_fmt = VDI_C_CH_422; |
| else |
| pixel_fmt = VDI_C_CH_420; |
| |
| reg = ipu_vdi_read(vdi, VDI_C); |
| reg |= pixel_fmt; |
| reg |= VDI_C_BURST_SIZE2_4; |
| reg |= VDI_C_BURST_SIZE1_4 | VDI_C_VWM1_CLR_2; |
| reg |= VDI_C_BURST_SIZE3_4 | VDI_C_VWM3_CLR_2; |
| ipu_vdi_write(vdi, reg, VDI_C); |
| |
| spin_unlock_irqrestore(&vdi->lock, flags); |
| } |
| EXPORT_SYMBOL_GPL(ipu_vdi_setup); |
| |
| void ipu_vdi_unsetup(struct ipu_vdi *vdi) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&vdi->lock, flags); |
| ipu_vdi_write(vdi, 0, VDI_FSIZE); |
| ipu_vdi_write(vdi, 0, VDI_C); |
| spin_unlock_irqrestore(&vdi->lock, flags); |
| } |
| EXPORT_SYMBOL_GPL(ipu_vdi_unsetup); |
| |
| int ipu_vdi_enable(struct ipu_vdi *vdi) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&vdi->lock, flags); |
| |
| if (!vdi->use_count) |
| ipu_module_enable(vdi->ipu, vdi->module); |
| |
| vdi->use_count++; |
| |
| spin_unlock_irqrestore(&vdi->lock, flags); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(ipu_vdi_enable); |
| |
| int ipu_vdi_disable(struct ipu_vdi *vdi) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&vdi->lock, flags); |
| |
| if (vdi->use_count) { |
| if (!--vdi->use_count) |
| ipu_module_disable(vdi->ipu, vdi->module); |
| } |
| |
| spin_unlock_irqrestore(&vdi->lock, flags); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(ipu_vdi_disable); |
| |
| struct ipu_vdi *ipu_vdi_get(struct ipu_soc *ipu) |
| { |
| return ipu->vdi_priv; |
| } |
| EXPORT_SYMBOL_GPL(ipu_vdi_get); |
| |
| void ipu_vdi_put(struct ipu_vdi *vdi) |
| { |
| } |
| EXPORT_SYMBOL_GPL(ipu_vdi_put); |
| |
| int ipu_vdi_init(struct ipu_soc *ipu, struct device *dev, |
| unsigned long base, u32 module) |
| { |
| struct ipu_vdi *vdi; |
| |
| vdi = devm_kzalloc(dev, sizeof(*vdi), GFP_KERNEL); |
| if (!vdi) |
| return -ENOMEM; |
| |
| ipu->vdi_priv = vdi; |
| |
| spin_lock_init(&vdi->lock); |
| vdi->module = module; |
| vdi->base = devm_ioremap(dev, base, PAGE_SIZE); |
| if (!vdi->base) |
| return -ENOMEM; |
| |
| dev_dbg(dev, "VDI base: 0x%08lx remapped to %p\n", base, vdi->base); |
| vdi->ipu = ipu; |
| |
| return 0; |
| } |
| |
| void ipu_vdi_exit(struct ipu_soc *ipu) |
| { |
| } |