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234 lines
5.1 KiB
234 lines
5.1 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (C) 2012-2016 Mentor Graphics Inc. |
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* Copyright (C) 2005-2009 Freescale Semiconductor, Inc. |
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*/ |
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#include <linux/io.h> |
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#include "ipu-prv.h" |
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struct ipu_vdi { |
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void __iomem *base; |
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u32 module; |
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spinlock_t lock; |
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int use_count; |
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struct ipu_soc *ipu; |
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}; |
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/* VDI Register Offsets */ |
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#define VDI_FSIZE 0x0000 |
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#define VDI_C 0x0004 |
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/* VDI Register Fields */ |
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#define VDI_C_CH_420 (0 << 1) |
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#define VDI_C_CH_422 (1 << 1) |
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#define VDI_C_MOT_SEL_MASK (0x3 << 2) |
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#define VDI_C_MOT_SEL_FULL (2 << 2) |
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#define VDI_C_MOT_SEL_LOW (1 << 2) |
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#define VDI_C_MOT_SEL_MED (0 << 2) |
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#define VDI_C_BURST_SIZE1_4 (3 << 4) |
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#define VDI_C_BURST_SIZE2_4 (3 << 8) |
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#define VDI_C_BURST_SIZE3_4 (3 << 12) |
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#define VDI_C_BURST_SIZE_MASK 0xF |
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#define VDI_C_BURST_SIZE1_OFFSET 4 |
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#define VDI_C_BURST_SIZE2_OFFSET 8 |
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#define VDI_C_BURST_SIZE3_OFFSET 12 |
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#define VDI_C_VWM1_SET_1 (0 << 16) |
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#define VDI_C_VWM1_SET_2 (1 << 16) |
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#define VDI_C_VWM1_CLR_2 (1 << 19) |
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#define VDI_C_VWM3_SET_1 (0 << 22) |
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#define VDI_C_VWM3_SET_2 (1 << 22) |
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#define VDI_C_VWM3_CLR_2 (1 << 25) |
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#define VDI_C_TOP_FIELD_MAN_1 (1 << 30) |
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#define VDI_C_TOP_FIELD_AUTO_1 (1 << 31) |
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static inline u32 ipu_vdi_read(struct ipu_vdi *vdi, unsigned int offset) |
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{ |
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return readl(vdi->base + offset); |
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} |
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static inline void ipu_vdi_write(struct ipu_vdi *vdi, u32 value, |
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unsigned int offset) |
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{ |
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writel(value, vdi->base + offset); |
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} |
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void ipu_vdi_set_field_order(struct ipu_vdi *vdi, v4l2_std_id std, u32 field) |
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{ |
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bool top_field_0 = false; |
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unsigned long flags; |
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u32 reg; |
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switch (field) { |
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case V4L2_FIELD_INTERLACED_TB: |
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case V4L2_FIELD_SEQ_TB: |
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case V4L2_FIELD_TOP: |
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top_field_0 = true; |
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break; |
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case V4L2_FIELD_INTERLACED_BT: |
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case V4L2_FIELD_SEQ_BT: |
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case V4L2_FIELD_BOTTOM: |
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top_field_0 = false; |
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break; |
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default: |
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top_field_0 = (std & V4L2_STD_525_60) ? true : false; |
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break; |
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} |
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spin_lock_irqsave(&vdi->lock, flags); |
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reg = ipu_vdi_read(vdi, VDI_C); |
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if (top_field_0) |
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reg &= ~(VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1); |
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else |
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reg |= VDI_C_TOP_FIELD_MAN_1 | VDI_C_TOP_FIELD_AUTO_1; |
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ipu_vdi_write(vdi, reg, VDI_C); |
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spin_unlock_irqrestore(&vdi->lock, flags); |
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} |
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EXPORT_SYMBOL_GPL(ipu_vdi_set_field_order); |
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void ipu_vdi_set_motion(struct ipu_vdi *vdi, enum ipu_motion_sel motion_sel) |
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{ |
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unsigned long flags; |
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u32 reg; |
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spin_lock_irqsave(&vdi->lock, flags); |
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reg = ipu_vdi_read(vdi, VDI_C); |
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reg &= ~VDI_C_MOT_SEL_MASK; |
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switch (motion_sel) { |
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case MED_MOTION: |
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reg |= VDI_C_MOT_SEL_MED; |
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break; |
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case HIGH_MOTION: |
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reg |= VDI_C_MOT_SEL_FULL; |
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break; |
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default: |
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reg |= VDI_C_MOT_SEL_LOW; |
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break; |
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} |
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ipu_vdi_write(vdi, reg, VDI_C); |
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spin_unlock_irqrestore(&vdi->lock, flags); |
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} |
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EXPORT_SYMBOL_GPL(ipu_vdi_set_motion); |
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void ipu_vdi_setup(struct ipu_vdi *vdi, u32 code, int xres, int yres) |
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{ |
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unsigned long flags; |
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u32 pixel_fmt, reg; |
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spin_lock_irqsave(&vdi->lock, flags); |
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reg = ((yres - 1) << 16) | (xres - 1); |
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ipu_vdi_write(vdi, reg, VDI_FSIZE); |
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/* |
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* Full motion, only vertical filter is used. |
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* Burst size is 4 accesses |
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*/ |
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if (code == MEDIA_BUS_FMT_UYVY8_2X8 || |
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code == MEDIA_BUS_FMT_UYVY8_1X16 || |
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code == MEDIA_BUS_FMT_YUYV8_2X8 || |
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code == MEDIA_BUS_FMT_YUYV8_1X16) |
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pixel_fmt = VDI_C_CH_422; |
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else |
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pixel_fmt = VDI_C_CH_420; |
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reg = ipu_vdi_read(vdi, VDI_C); |
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reg |= pixel_fmt; |
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reg |= VDI_C_BURST_SIZE2_4; |
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reg |= VDI_C_BURST_SIZE1_4 | VDI_C_VWM1_CLR_2; |
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reg |= VDI_C_BURST_SIZE3_4 | VDI_C_VWM3_CLR_2; |
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ipu_vdi_write(vdi, reg, VDI_C); |
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spin_unlock_irqrestore(&vdi->lock, flags); |
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} |
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EXPORT_SYMBOL_GPL(ipu_vdi_setup); |
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void ipu_vdi_unsetup(struct ipu_vdi *vdi) |
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{ |
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unsigned long flags; |
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spin_lock_irqsave(&vdi->lock, flags); |
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ipu_vdi_write(vdi, 0, VDI_FSIZE); |
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ipu_vdi_write(vdi, 0, VDI_C); |
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spin_unlock_irqrestore(&vdi->lock, flags); |
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} |
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EXPORT_SYMBOL_GPL(ipu_vdi_unsetup); |
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int ipu_vdi_enable(struct ipu_vdi *vdi) |
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{ |
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unsigned long flags; |
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spin_lock_irqsave(&vdi->lock, flags); |
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if (!vdi->use_count) |
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ipu_module_enable(vdi->ipu, vdi->module); |
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vdi->use_count++; |
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spin_unlock_irqrestore(&vdi->lock, flags); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(ipu_vdi_enable); |
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int ipu_vdi_disable(struct ipu_vdi *vdi) |
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{ |
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unsigned long flags; |
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spin_lock_irqsave(&vdi->lock, flags); |
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if (vdi->use_count) { |
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if (!--vdi->use_count) |
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ipu_module_disable(vdi->ipu, vdi->module); |
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} |
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spin_unlock_irqrestore(&vdi->lock, flags); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(ipu_vdi_disable); |
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struct ipu_vdi *ipu_vdi_get(struct ipu_soc *ipu) |
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{ |
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return ipu->vdi_priv; |
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} |
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EXPORT_SYMBOL_GPL(ipu_vdi_get); |
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void ipu_vdi_put(struct ipu_vdi *vdi) |
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{ |
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} |
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EXPORT_SYMBOL_GPL(ipu_vdi_put); |
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int ipu_vdi_init(struct ipu_soc *ipu, struct device *dev, |
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unsigned long base, u32 module) |
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{ |
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struct ipu_vdi *vdi; |
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vdi = devm_kzalloc(dev, sizeof(*vdi), GFP_KERNEL); |
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if (!vdi) |
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return -ENOMEM; |
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ipu->vdi_priv = vdi; |
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spin_lock_init(&vdi->lock); |
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vdi->module = module; |
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vdi->base = devm_ioremap(dev, base, PAGE_SIZE); |
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if (!vdi->base) |
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return -ENOMEM; |
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dev_dbg(dev, "VDI base: 0x%08lx remapped to %p\n", base, vdi->base); |
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vdi->ipu = ipu; |
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return 0; |
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} |
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void ipu_vdi_exit(struct ipu_soc *ipu) |
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{ |
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}
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