diff options
Diffstat (limited to 'drivers/media/video/exynos/rotator/rotator-regs.c')
| -rw-r--r-- | drivers/media/video/exynos/rotator/rotator-regs.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/media/video/exynos/rotator/rotator-regs.c b/drivers/media/video/exynos/rotator/rotator-regs.c new file mode 100644 index 0000000..9f983bf --- /dev/null +++ b/drivers/media/video/exynos/rotator/rotator-regs.c @@ -0,0 +1,215 @@ +/* + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Register interface file for Exynos Rotator driver + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include "rotator.h" + +void rot_hwset_irq_frame_done(struct rot_dev *rot, u32 enable) +{ + unsigned long cfg = readl(rot->regs + ROTATOR_CONFIG); + + if (enable) + cfg |= ROTATOR_CONFIG_IRQ_DONE; + else + cfg &= ~ROTATOR_CONFIG_IRQ_DONE; + + writel(cfg, rot->regs + ROTATOR_CONFIG); +} + +void rot_hwset_irq_illegal_config(struct rot_dev *rot, u32 enable) +{ + unsigned long cfg = readl(rot->regs + ROTATOR_CONFIG); + + if (enable) + cfg |= ROTATOR_CONFIG_IRQ_ILLEGAL; + else + cfg &= ~ROTATOR_CONFIG_IRQ_ILLEGAL; + + writel(cfg, rot->regs + ROTATOR_CONFIG); +} + +int rot_hwset_image_format(struct rot_dev *rot, u32 pixelformat) +{ + unsigned long cfg = readl(rot->regs + ROTATOR_CONTROL); + cfg &= ~ROTATOR_CONTROL_FMT_MASK; + + switch (pixelformat) { + case V4L2_PIX_FMT_YUV420M: + cfg |= ROTATOR_CONTROL_FMT_YCBCR420_3P; + break; + case V4L2_PIX_FMT_NV12M: + cfg |= ROTATOR_CONTROL_FMT_YCBCR420_2P; + break; + case V4L2_PIX_FMT_YUYV: + cfg |= ROTATOR_CONTROL_FMT_YCBCR422; + break; + case V4L2_PIX_FMT_RGB565: + cfg |= ROTATOR_CONTROL_FMT_RGB565; + break; + case V4L2_PIX_FMT_RGB32: + cfg |= ROTATOR_CONTROL_FMT_RGB888; + break; + default: + dev_err(rot->dev, "invalid pixelformat type\n"); + return -EINVAL; + } + writel(cfg, rot->regs + ROTATOR_CONTROL); + return 0; +} + +void rot_hwset_flip(struct rot_dev *rot, u32 direction) +{ + unsigned long cfg = readl(rot->regs + ROTATOR_CONTROL); + cfg &= ~ROTATOR_CONTROL_FLIP_MASK; + + if (direction == ROT_VFLIP) + cfg |= ROTATOR_CONTROL_FLIP_V; + else if (direction == ROT_HFLIP) + cfg |= ROTATOR_CONTROL_FLIP_H; + + writel(cfg, rot->regs + ROTATOR_CONTROL); +} + +void rot_hwset_rotation(struct rot_dev *rot, int degree) +{ + unsigned long cfg = readl(rot->regs + ROTATOR_CONTROL); + cfg &= ~ROTATOR_CONTROL_ROT_MASK; + + if (degree == 90) + cfg |= ROTATOR_CONTROL_ROT_90; + else if (degree == 180) + cfg |= ROTATOR_CONTROL_ROT_180; + else if (degree == 270) + cfg |= ROTATOR_CONTROL_ROT_270; + + writel(cfg, rot->regs + ROTATOR_CONTROL); +} + +void rot_hwset_start(struct rot_dev *rot) +{ + unsigned long cfg = readl(rot->regs + ROTATOR_CONTROL); + + cfg |= ROTATOR_CONTROL_START; + + writel(cfg, rot->regs + ROTATOR_CONTROL); +} + +void rot_hwset_src_addr(struct rot_dev *rot, dma_addr_t addr, u32 comp) +{ + writel(addr, rot->regs + ROTATOR_SRC_IMG_ADDR(comp)); +} + +void rot_hwset_dst_addr(struct rot_dev *rot, dma_addr_t addr, u32 comp) +{ + writel(addr, rot->regs + ROTATOR_DST_IMG_ADDR(comp)); +} + +void rot_hwset_src_imgsize(struct rot_dev *rot, struct rot_frame *frame) +{ + unsigned long cfg; + + cfg = ROTATOR_SRCIMG_YSIZE(frame->pix_mp.height) | + ROTATOR_SRCIMG_XSIZE(frame->pix_mp.width); + + writel(cfg, rot->regs + ROTATOR_SRCIMG); + + cfg = ROTATOR_SRCROT_YSIZE(frame->pix_mp.height) | + ROTATOR_SRCROT_XSIZE(frame->pix_mp.width); + + writel(cfg, rot->regs + ROTATOR_SRCROT); +} + +void rot_hwset_src_crop(struct rot_dev *rot, struct v4l2_rect *rect) +{ + unsigned long cfg; + + cfg = ROTATOR_SRC_Y(rect->top) | + ROTATOR_SRC_X(rect->left); + + writel(cfg, rot->regs + ROTATOR_SRC); + + cfg = ROTATOR_SRCROT_YSIZE(rect->height) | + ROTATOR_SRCROT_XSIZE(rect->width); + + writel(cfg, rot->regs + ROTATOR_SRCROT); +} + +void rot_hwset_dst_imgsize(struct rot_dev *rot, struct rot_frame *frame) +{ + unsigned long cfg; + + cfg = ROTATOR_DSTIMG_YSIZE(frame->pix_mp.height) | + ROTATOR_DSTIMG_XSIZE(frame->pix_mp.width); + + writel(cfg, rot->regs + ROTATOR_DSTIMG); +} + +void rot_hwset_dst_crop(struct rot_dev *rot, struct v4l2_rect *rect) +{ + unsigned long cfg; + + cfg = ROTATOR_DST_Y(rect->top) | + ROTATOR_DST_X(rect->left); + + writel(cfg, rot->regs + ROTATOR_DST); +} + +void rot_hwget_irq_src(struct rot_dev *rot, enum rot_irq_src *irq) +{ + unsigned long cfg = readl(rot->regs + ROTATOR_STATUS); + cfg = ROTATOR_STATUS_IRQ(cfg); + + if (cfg == 1) + *irq = ISR_PEND_DONE; + else if (cfg == 2) + *irq = ISR_PEND_ILLEGAL; +} + +void rot_hwset_irq_clear(struct rot_dev *rot, enum rot_irq_src *irq) +{ + unsigned long cfg = readl(rot->regs + ROTATOR_STATUS); + cfg |= ROTATOR_STATUS_IRQ_PENDING((u32)irq); + + writel(cfg, rot->regs + ROTATOR_STATUS); +} + +void rot_hwget_status(struct rot_dev *rot, enum rot_status *state) +{ + unsigned long cfg; + + cfg = readl(rot->regs + ROTATOR_STATUS); + cfg &= ROTATOR_STATUS_MASK; + + switch (cfg) { + case 0: + *state = ROT_IDLE; + break; + case 1: + *state = ROT_RESERVED; + break; + case 2: + *state = ROT_RUNNING; + break; + case 3: + *state = ROT_RUNNING_REMAIN; + break; + }; +} + +void rot_dump_registers(struct rot_dev *rot) +{ + unsigned int tmp, i; + + rot_dbg("dump rotator registers\n"); + for (i = 0; i <= ROTATOR_DST; i += 0x4) { + tmp = readl(rot->regs + i); + rot_dbg("0x%08x: 0x%08x", i, tmp); + } +} |