diff options
Diffstat (limited to 'drivers/media/platform/ti-vpe/csc.c')
| -rw-r--r-- | drivers/media/platform/ti-vpe/csc.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/drivers/media/platform/ti-vpe/csc.c b/drivers/media/platform/ti-vpe/csc.c deleted file mode 100644 index 44b8465cf101..000000000000 --- a/drivers/media/platform/ti-vpe/csc.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * Color space converter library - * - * Copyright (c) 2013 Texas Instruments Inc. - * - * David Griego, <dagriego@biglakesoftware.com> - * Dale Farnsworth, <dale@farnsworth.org> - * Archit Taneja, <archit@ti.com> - * - * 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 <linux/err.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/videodev2.h> - -#include "csc.h" - -/* - * 16 coefficients in the order: - * a0, b0, c0, a1, b1, c1, a2, b2, c2, d0, d1, d2 - * (we may need to pass non-default values from user space later on, we might - * need to make the coefficient struct more easy to populate) - */ -struct colorspace_coeffs { - u16 sd[12]; - u16 hd[12]; -}; - -/* VIDEO_RANGE: limited range, GRAPHICS_RANGE: full range */ -#define CSC_COEFFS_VIDEO_RANGE_Y2R 0 -#define CSC_COEFFS_GRAPHICS_RANGE_Y2R 1 -#define CSC_COEFFS_VIDEO_RANGE_R2Y 2 -#define CSC_COEFFS_GRAPHICS_RANGE_R2Y 3 - -/* default colorspace coefficients */ -static struct colorspace_coeffs colorspace_coeffs[4] = { - [CSC_COEFFS_VIDEO_RANGE_Y2R] = { - { - /* SDTV */ - 0x0400, 0x0000, 0x057D, 0x0400, 0x1EA7, 0x1D35, - 0x0400, 0x06EF, 0x1FFE, 0x0D40, 0x0210, 0x0C88, - }, - { - /* HDTV */ - 0x0400, 0x0000, 0x0629, 0x0400, 0x1F45, 0x1E2B, - 0x0400, 0x0742, 0x0000, 0x0CEC, 0x0148, 0x0C60, - }, - }, - [CSC_COEFFS_GRAPHICS_RANGE_Y2R] = { - { - /* SDTV */ - 0x04A8, 0x1FFE, 0x0662, 0x04A8, 0x1E6F, 0x1CBF, - 0x04A8, 0x0812, 0x1FFF, 0x0C84, 0x0220, 0x0BAC, - }, - { - /* HDTV */ - 0x04A8, 0x0000, 0x072C, 0x04A8, 0x1F26, 0x1DDE, - 0x04A8, 0x0873, 0x0000, 0x0C20, 0x0134, 0x0B7C, - }, - }, - [CSC_COEFFS_VIDEO_RANGE_R2Y] = { - { - /* SDTV */ - 0x0132, 0x0259, 0x0075, 0x1F50, 0x1EA5, 0x020B, - 0x020B, 0x1E4A, 0x1FAB, 0x0000, 0x0200, 0x0200, - }, - { - /* HDTV */ - 0x00DA, 0x02DC, 0x004A, 0x1F88, 0x1E6C, 0x020C, - 0x020C, 0x1E24, 0x1FD0, 0x0000, 0x0200, 0x0200, - }, - }, - [CSC_COEFFS_GRAPHICS_RANGE_R2Y] = { - { - /* SDTV */ - 0x0107, 0x0204, 0x0064, 0x1F68, 0x1ED6, 0x01C2, - 0x01C2, 0x1E87, 0x1FB7, 0x0040, 0x0200, 0x0200, - }, - { - /* HDTV */ - 0x04A8, 0x0000, 0x072C, 0x04A8, 0x1F26, 0x1DDE, - 0x04A8, 0x0873, 0x0000, 0x0C20, 0x0134, 0x0B7C, - }, - }, -}; - -void csc_dump_regs(struct csc_data *csc) -{ - struct device *dev = &csc->pdev->dev; - -#define DUMPREG(r) dev_dbg(dev, "%-35s %08x\n", #r, \ - ioread32(csc->base + CSC_##r)) - - dev_dbg(dev, "CSC Registers @ %pa:\n", &csc->res->start); - - DUMPREG(CSC00); - DUMPREG(CSC01); - DUMPREG(CSC02); - DUMPREG(CSC03); - DUMPREG(CSC04); - DUMPREG(CSC05); - -#undef DUMPREG -} -EXPORT_SYMBOL(csc_dump_regs); - -void csc_set_coeff_bypass(struct csc_data *csc, u32 *csc_reg5) -{ - *csc_reg5 |= CSC_BYPASS; -} -EXPORT_SYMBOL(csc_set_coeff_bypass); - -/* - * set the color space converter coefficient shadow register values - */ -void csc_set_coeff(struct csc_data *csc, u32 *csc_reg0, - enum v4l2_colorspace src_colorspace, - enum v4l2_colorspace dst_colorspace) -{ - u32 *csc_reg5 = csc_reg0 + 5; - u32 *shadow_csc = csc_reg0; - struct colorspace_coeffs *sd_hd_coeffs; - u16 *coeff, *end_coeff; - enum v4l2_colorspace yuv_colorspace; - int sel = 0; - - /* - * support only graphics data range(full range) for now, a control ioctl - * would be nice here - */ - /* Y2R */ - if (dst_colorspace == V4L2_COLORSPACE_SRGB && - (src_colorspace == V4L2_COLORSPACE_SMPTE170M || - src_colorspace == V4L2_COLORSPACE_REC709)) { - /* Y2R */ - sel = 1; - yuv_colorspace = src_colorspace; - } else if ((dst_colorspace == V4L2_COLORSPACE_SMPTE170M || - dst_colorspace == V4L2_COLORSPACE_REC709) && - src_colorspace == V4L2_COLORSPACE_SRGB) { - /* R2Y */ - sel = 3; - yuv_colorspace = dst_colorspace; - } else { - *csc_reg5 |= CSC_BYPASS; - return; - } - - sd_hd_coeffs = &colorspace_coeffs[sel]; - - /* select between SD or HD coefficients */ - if (yuv_colorspace == V4L2_COLORSPACE_SMPTE170M) - coeff = sd_hd_coeffs->sd; - else - coeff = sd_hd_coeffs->hd; - - end_coeff = coeff + 12; - - for (; coeff < end_coeff; coeff += 2) - *shadow_csc++ = (*(coeff + 1) << 16) | *coeff; -} -EXPORT_SYMBOL(csc_set_coeff); - -struct csc_data *csc_create(struct platform_device *pdev, const char *res_name) -{ - struct csc_data *csc; - - dev_dbg(&pdev->dev, "csc_create\n"); - - csc = devm_kzalloc(&pdev->dev, sizeof(*csc), GFP_KERNEL); - if (!csc) { - dev_err(&pdev->dev, "couldn't alloc csc_data\n"); - return ERR_PTR(-ENOMEM); - } - - csc->pdev = pdev; - - csc->res = platform_get_resource_byname(pdev, IORESOURCE_MEM, - res_name); - if (csc->res == NULL) { - dev_err(&pdev->dev, "missing '%s' platform resources data\n", - res_name); - return ERR_PTR(-ENODEV); - } - - csc->base = devm_ioremap_resource(&pdev->dev, csc->res); - if (IS_ERR(csc->base)) { - dev_err(&pdev->dev, "failed to ioremap\n"); - return ERR_CAST(csc->base); - } - - return csc; -} -EXPORT_SYMBOL(csc_create); - -MODULE_DESCRIPTION("TI VIP/VPE Color Space Converter"); -MODULE_AUTHOR("Texas Instruments Inc."); -MODULE_LICENSE("GPL v2"); |