forked from luck/tmp_suning_uos_patched
2d2ead4530
Adds the Video Deinterlacer (VDIC) unit. Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
244 lines
5.5 KiB
C
244 lines
5.5 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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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;
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else
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reg |= VDI_C_TOP_FIELD_MAN_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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