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authorMauro Carvalho Chehab <mchehab@kernel.org>2022-03-13 11:18:20 +0100
committerMauro Carvalho Chehab <mchehab@kernel.org>2022-03-18 05:58:34 +0100
commitceafdaac46ea2c623a64eabaed64abd2fe7cb76f (patch)
treec255efc7915e7b7696bbbf17c309b9e1b24828ea /drivers/media/platform/omap3isp/ispresizer.c
parentd24a170bde6543fa2879d3c422b7874716cdf038 (diff)
downloadlinux-ceafdaac46ea2c623a64eabaed64abd2fe7cb76f.tar.bz2
media: platform: rename omap3isp/ to ti/omap3isp/
As the end goal is to have platform drivers split by vendor, rename omap3isp/ to ti/omap3isp/. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media/platform/omap3isp/ispresizer.c')
-rw-r--r--drivers/media/platform/omap3isp/ispresizer.c1801
1 files changed, 0 insertions, 1801 deletions
diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c
deleted file mode 100644
index ed2fb0c7a57e..000000000000
--- a/drivers/media/platform/omap3isp/ispresizer.c
+++ /dev/null
@@ -1,1801 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * ispresizer.c
- *
- * TI OMAP3 ISP - Resizer module
- *
- * Copyright (C) 2010 Nokia Corporation
- * Copyright (C) 2009 Texas Instruments, Inc
- *
- * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- * Sakari Ailus <sakari.ailus@iki.fi>
- */
-
-#include <linux/device.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-
-#include "isp.h"
-#include "ispreg.h"
-#include "ispresizer.h"
-
-/*
- * Resizer Constants
- */
-#define MIN_RESIZE_VALUE 64
-#define MID_RESIZE_VALUE 512
-#define MAX_RESIZE_VALUE 1024
-
-#define MIN_IN_WIDTH 32
-#define MIN_IN_HEIGHT 32
-#define MAX_IN_WIDTH_MEMORY_MODE 4095
-#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES1 1280
-#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES2 4095
-#define MAX_IN_HEIGHT 4095
-
-#define MIN_OUT_WIDTH 16
-#define MIN_OUT_HEIGHT 2
-#define MAX_OUT_HEIGHT 4095
-
-/*
- * Resizer Use Constraints
- * "TRM ES3.1, table 12-46"
- */
-#define MAX_4TAP_OUT_WIDTH_ES1 1280
-#define MAX_7TAP_OUT_WIDTH_ES1 640
-#define MAX_4TAP_OUT_WIDTH_ES2 3312
-#define MAX_7TAP_OUT_WIDTH_ES2 1650
-#define MAX_4TAP_OUT_WIDTH_3630 4096
-#define MAX_7TAP_OUT_WIDTH_3630 2048
-
-/*
- * Constants for ratio calculation
- */
-#define RESIZE_DIVISOR 256
-#define DEFAULT_PHASE 1
-
-/*
- * Default (and only) configuration of filter coefficients.
- * 7-tap mode is for scale factors 0.25x to 0.5x.
- * 4-tap mode is for scale factors 0.5x to 4.0x.
- * There shouldn't be any reason to recalculate these, EVER.
- */
-static const struct isprsz_coef filter_coefs = {
- /* For 8-phase 4-tap horizontal filter: */
- {
- 0x0000, 0x0100, 0x0000, 0x0000,
- 0x03FA, 0x00F6, 0x0010, 0x0000,
- 0x03F9, 0x00DB, 0x002C, 0x0000,
- 0x03FB, 0x00B3, 0x0053, 0x03FF,
- 0x03FD, 0x0082, 0x0084, 0x03FD,
- 0x03FF, 0x0053, 0x00B3, 0x03FB,
- 0x0000, 0x002C, 0x00DB, 0x03F9,
- 0x0000, 0x0010, 0x00F6, 0x03FA
- },
- /* For 8-phase 4-tap vertical filter: */
- {
- 0x0000, 0x0100, 0x0000, 0x0000,
- 0x03FA, 0x00F6, 0x0010, 0x0000,
- 0x03F9, 0x00DB, 0x002C, 0x0000,
- 0x03FB, 0x00B3, 0x0053, 0x03FF,
- 0x03FD, 0x0082, 0x0084, 0x03FD,
- 0x03FF, 0x0053, 0x00B3, 0x03FB,
- 0x0000, 0x002C, 0x00DB, 0x03F9,
- 0x0000, 0x0010, 0x00F6, 0x03FA
- },
- /* For 4-phase 7-tap horizontal filter: */
- #define DUMMY 0
- {
- 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY,
- 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY,
- 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY,
- 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY
- },
- /* For 4-phase 7-tap vertical filter: */
- {
- 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY,
- 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY,
- 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY,
- 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY
- }
- /*
- * The dummy padding is required in 7-tap mode because of how the
- * registers are arranged physically.
- */
- #undef DUMMY
-};
-
-/*
- * __resizer_get_format - helper function for getting resizer format
- * @res : pointer to resizer private structure
- * @pad : pad number
- * @cfg: V4L2 subdev pad configuration
- * @which : wanted subdev format
- * return zero
- */
-static struct v4l2_mbus_framefmt *
-__resizer_get_format(struct isp_res_device *res,
- struct v4l2_subdev_state *sd_state,
- unsigned int pad, enum v4l2_subdev_format_whence which)
-{
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_get_try_format(&res->subdev, sd_state, pad);
- else
- return &res->formats[pad];
-}
-
-/*
- * __resizer_get_crop - helper function for getting resizer crop rectangle
- * @res : pointer to resizer private structure
- * @cfg: V4L2 subdev pad configuration
- * @which : wanted subdev crop rectangle
- */
-static struct v4l2_rect *
-__resizer_get_crop(struct isp_res_device *res,
- struct v4l2_subdev_state *sd_state,
- enum v4l2_subdev_format_whence which)
-{
- if (which == V4L2_SUBDEV_FORMAT_TRY)
- return v4l2_subdev_get_try_crop(&res->subdev, sd_state,
- RESZ_PAD_SINK);
- else
- return &res->crop.request;
-}
-
-/*
- * resizer_set_filters - Set resizer filters
- * @res: Device context.
- * @h_coeff: horizontal coefficient
- * @v_coeff: vertical coefficient
- * Return none
- */
-static void resizer_set_filters(struct isp_res_device *res, const u16 *h_coeff,
- const u16 *v_coeff)
-{
- struct isp_device *isp = to_isp_device(res);
- u32 startaddr_h, startaddr_v, tmp_h, tmp_v;
- int i;
-
- startaddr_h = ISPRSZ_HFILT10;
- startaddr_v = ISPRSZ_VFILT10;
-
- for (i = 0; i < COEFF_CNT; i += 2) {
- tmp_h = h_coeff[i] |
- (h_coeff[i + 1] << ISPRSZ_HFILT_COEF1_SHIFT);
- tmp_v = v_coeff[i] |
- (v_coeff[i + 1] << ISPRSZ_VFILT_COEF1_SHIFT);
- isp_reg_writel(isp, tmp_h, OMAP3_ISP_IOMEM_RESZ, startaddr_h);
- isp_reg_writel(isp, tmp_v, OMAP3_ISP_IOMEM_RESZ, startaddr_v);
- startaddr_h += 4;
- startaddr_v += 4;
- }
-}
-
-/*
- * resizer_set_bilinear - Chrominance horizontal algorithm select
- * @res: Device context.
- * @type: Filtering interpolation type.
- *
- * Filtering that is same as luminance processing is
- * intended only for downsampling, and bilinear interpolation
- * is intended only for upsampling.
- */
-static void resizer_set_bilinear(struct isp_res_device *res,
- enum resizer_chroma_algo type)
-{
- struct isp_device *isp = to_isp_device(res);
-
- if (type == RSZ_BILINEAR)
- isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
- ISPRSZ_CNT_CBILIN);
- else
- isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
- ISPRSZ_CNT_CBILIN);
-}
-
-/*
- * resizer_set_ycpos - Luminance and chrominance order
- * @res: Device context.
- * @pixelcode: pixel code.
- */
-static void resizer_set_ycpos(struct isp_res_device *res, u32 pixelcode)
-{
- struct isp_device *isp = to_isp_device(res);
-
- switch (pixelcode) {
- case MEDIA_BUS_FMT_YUYV8_1X16:
- isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
- ISPRSZ_CNT_YCPOS);
- break;
- case MEDIA_BUS_FMT_UYVY8_1X16:
- isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
- ISPRSZ_CNT_YCPOS);
- break;
- default:
- return;
- }
-}
-
-/*
- * resizer_set_phase - Setup horizontal and vertical starting phase
- * @res: Device context.
- * @h_phase: horizontal phase parameters.
- * @v_phase: vertical phase parameters.
- *
- * Horizontal and vertical phase range is 0 to 7
- */
-static void resizer_set_phase(struct isp_res_device *res, u32 h_phase,
- u32 v_phase)
-{
- struct isp_device *isp = to_isp_device(res);
- u32 rgval;
-
- rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) &
- ~(ISPRSZ_CNT_HSTPH_MASK | ISPRSZ_CNT_VSTPH_MASK);
- rgval |= (h_phase << ISPRSZ_CNT_HSTPH_SHIFT) & ISPRSZ_CNT_HSTPH_MASK;
- rgval |= (v_phase << ISPRSZ_CNT_VSTPH_SHIFT) & ISPRSZ_CNT_VSTPH_MASK;
-
- isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT);
-}
-
-/*
- * resizer_set_luma - Setup luminance enhancer parameters
- * @res: Device context.
- * @luma: Structure for luminance enhancer parameters.
- *
- * Algorithm select:
- * 0x0: Disable
- * 0x1: [-1 2 -1]/2 high-pass filter
- * 0x2: [-1 -2 6 -2 -1]/4 high-pass filter
- *
- * Maximum gain:
- * The data is coded in U4Q4 representation.
- *
- * Slope:
- * The data is coded in U4Q4 representation.
- *
- * Coring offset:
- * The data is coded in U8Q0 representation.
- *
- * The new luminance value is computed as:
- * Y += HPF(Y) x max(GAIN, (HPF(Y) - CORE) x SLOP + 8) >> 4.
- */
-static void resizer_set_luma(struct isp_res_device *res,
- struct resizer_luma_yenh *luma)
-{
- struct isp_device *isp = to_isp_device(res);
- u32 rgval;
-
- rgval = (luma->algo << ISPRSZ_YENH_ALGO_SHIFT)
- & ISPRSZ_YENH_ALGO_MASK;
- rgval |= (luma->gain << ISPRSZ_YENH_GAIN_SHIFT)
- & ISPRSZ_YENH_GAIN_MASK;
- rgval |= (luma->slope << ISPRSZ_YENH_SLOP_SHIFT)
- & ISPRSZ_YENH_SLOP_MASK;
- rgval |= (luma->core << ISPRSZ_YENH_CORE_SHIFT)
- & ISPRSZ_YENH_CORE_MASK;
-
- isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_YENH);
-}
-
-/*
- * resizer_set_source - Input source select
- * @res: Device context.
- * @source: Input source type
- *
- * If this field is set to RESIZER_INPUT_VP, the resizer input is fed from
- * Preview/CCDC engine, otherwise from memory.
- */
-static void resizer_set_source(struct isp_res_device *res,
- enum resizer_input_entity source)
-{
- struct isp_device *isp = to_isp_device(res);
-
- if (source == RESIZER_INPUT_MEMORY)
- isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
- ISPRSZ_CNT_INPSRC);
- else
- isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
- ISPRSZ_CNT_INPSRC);
-}
-
-/*
- * resizer_set_ratio - Setup horizontal and vertical resizing value
- * @res: Device context.
- * @ratio: Structure for ratio parameters.
- *
- * Resizing range from 64 to 1024
- */
-static void resizer_set_ratio(struct isp_res_device *res,
- const struct resizer_ratio *ratio)
-{
- struct isp_device *isp = to_isp_device(res);
- const u16 *h_filter, *v_filter;
- u32 rgval;
-
- rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) &
- ~(ISPRSZ_CNT_HRSZ_MASK | ISPRSZ_CNT_VRSZ_MASK);
- rgval |= ((ratio->horz - 1) << ISPRSZ_CNT_HRSZ_SHIFT)
- & ISPRSZ_CNT_HRSZ_MASK;
- rgval |= ((ratio->vert - 1) << ISPRSZ_CNT_VRSZ_SHIFT)
- & ISPRSZ_CNT_VRSZ_MASK;
- isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT);
-
- /* prepare horizontal filter coefficients */
- if (ratio->horz > MID_RESIZE_VALUE)
- h_filter = &filter_coefs.h_filter_coef_7tap[0];
- else
- h_filter = &filter_coefs.h_filter_coef_4tap[0];
-
- /* prepare vertical filter coefficients */
- if (ratio->vert > MID_RESIZE_VALUE)
- v_filter = &filter_coefs.v_filter_coef_7tap[0];
- else
- v_filter = &filter_coefs.v_filter_coef_4tap[0];
-
- resizer_set_filters(res, h_filter, v_filter);
-}
-
-/*
- * resizer_set_dst_size - Setup the output height and width
- * @res: Device context.
- * @width: Output width.
- * @height: Output height.
- *
- * Width :
- * The value must be EVEN.
- *
- * Height:
- * The number of bytes written to SDRAM must be
- * a multiple of 16-bytes if the vertical resizing factor
- * is greater than 1x (upsizing)
- */
-static void resizer_set_output_size(struct isp_res_device *res,
- u32 width, u32 height)
-{
- struct isp_device *isp = to_isp_device(res);
- u32 rgval;
-
- rgval = (width << ISPRSZ_OUT_SIZE_HORZ_SHIFT)
- & ISPRSZ_OUT_SIZE_HORZ_MASK;
- rgval |= (height << ISPRSZ_OUT_SIZE_VERT_SHIFT)
- & ISPRSZ_OUT_SIZE_VERT_MASK;
- isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_OUT_SIZE);
-}
-
-/*
- * resizer_set_output_offset - Setup memory offset for the output lines.
- * @res: Device context.
- * @offset: Memory offset.
- *
- * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte
- * boundary; the 5 LSBs are read-only. For optimal use of SDRAM bandwidth,
- * the SDRAM line offset must be set on a 256-byte boundary
- */
-static void resizer_set_output_offset(struct isp_res_device *res, u32 offset)
-{
- struct isp_device *isp = to_isp_device(res);
-
- isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTOFF);
-}
-
-/*
- * resizer_set_start - Setup vertical and horizontal start position
- * @res: Device context.
- * @left: Horizontal start position.
- * @top: Vertical start position.
- *
- * Vertical start line:
- * This field makes sense only when the resizer obtains its input
- * from the preview engine/CCDC
- *
- * Horizontal start pixel:
- * Pixels are coded on 16 bits for YUV and 8 bits for color separate data.
- * When the resizer gets its input from SDRAM, this field must be set
- * to <= 15 for YUV 16-bit data and <= 31 for 8-bit color separate data
- */
-static void resizer_set_start(struct isp_res_device *res, u32 left, u32 top)
-{
- struct isp_device *isp = to_isp_device(res);
- u32 rgval;
-
- rgval = (left << ISPRSZ_IN_START_HORZ_ST_SHIFT)
- & ISPRSZ_IN_START_HORZ_ST_MASK;
- rgval |= (top << ISPRSZ_IN_START_VERT_ST_SHIFT)
- & ISPRSZ_IN_START_VERT_ST_MASK;
-
- isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START);
-}
-
-/*
- * resizer_set_input_size - Setup the input size
- * @res: Device context.
- * @width: The range is 0 to 4095 pixels
- * @height: The range is 0 to 4095 lines
- */
-static void resizer_set_input_size(struct isp_res_device *res,
- u32 width, u32 height)
-{
- struct isp_device *isp = to_isp_device(res);
- u32 rgval;
-
- rgval = (width << ISPRSZ_IN_SIZE_HORZ_SHIFT)
- & ISPRSZ_IN_SIZE_HORZ_MASK;
- rgval |= (height << ISPRSZ_IN_SIZE_VERT_SHIFT)
- & ISPRSZ_IN_SIZE_VERT_MASK;
-
- isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_SIZE);
-}
-
-/*
- * resizer_set_src_offs - Setup the memory offset for the input lines
- * @res: Device context.
- * @offset: Memory offset.
- *
- * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte
- * boundary; the 5 LSBs are read-only. This field must be programmed to be
- * 0x0 if the resizer input is from preview engine/CCDC.
- */
-static void resizer_set_input_offset(struct isp_res_device *res, u32 offset)
-{
- struct isp_device *isp = to_isp_device(res);
-
- isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INOFF);
-}
-
-/*
- * resizer_set_intype - Input type select
- * @res: Device context.
- * @type: Pixel format type.
- */
-static void resizer_set_intype(struct isp_res_device *res,
- enum resizer_colors_type type)
-{
- struct isp_device *isp = to_isp_device(res);
-
- if (type == RSZ_COLOR8)
- isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
- ISPRSZ_CNT_INPTYP);
- else
- isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT,
- ISPRSZ_CNT_INPTYP);
-}
-
-/*
- * __resizer_set_inaddr - Helper function for set input address
- * @res : pointer to resizer private data structure
- * @addr: input address
- * return none
- */
-static void __resizer_set_inaddr(struct isp_res_device *res, u32 addr)
-{
- struct isp_device *isp = to_isp_device(res);
-
- isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD);
-}
-
-/*
- * The data rate at the horizontal resizer output must not exceed half the
- * functional clock or 100 MP/s, whichever is lower. According to the TRM
- * there's no similar requirement for the vertical resizer output. However
- * experience showed that vertical upscaling by 4 leads to SBL overflows (with
- * data rates at the resizer output exceeding 300 MP/s). Limiting the resizer
- * output data rate to the functional clock or 200 MP/s, whichever is lower,
- * seems to get rid of SBL overflows.
- *
- * The maximum data rate at the output of the horizontal resizer can thus be
- * computed with
- *
- * max intermediate rate <= L3 clock * input height / output height
- * max intermediate rate <= L3 clock / 2
- *
- * The maximum data rate at the resizer input is then
- *
- * max input rate <= max intermediate rate * input width / output width
- *
- * where the input width and height are the resizer input crop rectangle size.
- * The TRM doesn't clearly explain if that's a maximum instant data rate or a
- * maximum average data rate.
- */
-void omap3isp_resizer_max_rate(struct isp_res_device *res,
- unsigned int *max_rate)
-{
- struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity);
- const struct v4l2_mbus_framefmt *ofmt = &res->formats[RESZ_PAD_SOURCE];
- unsigned long limit = min(pipe->l3_ick, 200000000UL);
- unsigned long clock;
-
- clock = div_u64((u64)limit * res->crop.active.height, ofmt->height);
- clock = min(clock, limit / 2);
- *max_rate = div_u64((u64)clock * res->crop.active.width, ofmt->width);
-}
-
-/*
- * When the resizer processes images from memory, the driver must slow down read
- * requests on the input to at least comply with the internal data rate
- * requirements. If the application real-time requirements can cope with slower
- * processing, the resizer can be slowed down even more to put less pressure on
- * the overall system.
- *
- * When the resizer processes images on the fly (either from the CCDC or the
- * preview module), the same data rate requirements apply but they can't be
- * enforced at the resizer level. The image input module (sensor, CCP2 or
- * preview module) must not provide image data faster than the resizer can
- * process.
- *
- * For live image pipelines, the data rate is set by the frame format, size and
- * rate. The sensor output frame rate must not exceed the maximum resizer data
- * rate.
- *
- * The resizer slows down read requests by inserting wait cycles in the SBL
- * requests. The maximum number of 256-byte requests per second can be computed
- * as (the data rate is multiplied by 2 to convert from pixels per second to
- * bytes per second)
- *
- * request per second = data rate * 2 / 256
- * cycles per request = cycles per second / requests per second
- *
- * The number of cycles per second is controlled by the L3 clock, leading to
- *
- * cycles per request = L3 frequency / 2 * 256 / data rate
- */
-static void resizer_adjust_bandwidth(struct isp_res_device *res)
-{
- struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity);
- struct isp_device *isp = to_isp_device(res);
- unsigned long l3_ick = pipe->l3_ick;
- struct v4l2_fract *timeperframe;
- unsigned int cycles_per_frame;
- unsigned int requests_per_frame;
- unsigned int cycles_per_request;
- unsigned int granularity;
- unsigned int minimum;
- unsigned int maximum;
- unsigned int value;
-
- if (res->input != RESIZER_INPUT_MEMORY) {
- isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
- ISPSBL_SDR_REQ_RSZ_EXP_MASK);
- return;
- }
-
- switch (isp->revision) {
- case ISP_REVISION_1_0:
- case ISP_REVISION_2_0:
- default:
- granularity = 1024;
- break;
-
- case ISP_REVISION_15_0:
- granularity = 32;
- break;
- }
-
- /* Compute the minimum number of cycles per request, based on the
- * pipeline maximum data rate. This is an absolute lower bound if we
- * don't want SBL overflows, so round the value up.
- */
- cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1,
- pipe->max_rate);
- minimum = DIV_ROUND_UP(cycles_per_request, granularity);
-
- /* Compute the maximum number of cycles per request, based on the
- * requested frame rate. This is a soft upper bound to achieve a frame
- * rate equal or higher than the requested value, so round the value
- * down.
- */
- timeperframe = &pipe->max_timeperframe;
-
- requests_per_frame = DIV_ROUND_UP(res->crop.active.width * 2, 256)
- * res->crop.active.height;
- cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator,
- timeperframe->denominator);
- cycles_per_request = cycles_per_frame / requests_per_frame;
-
- maximum = cycles_per_request / granularity;
-
- value = max(minimum, maximum);
-
- dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value);
- isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
- ISPSBL_SDR_REQ_RSZ_EXP_MASK,
- value << ISPSBL_SDR_REQ_RSZ_EXP_SHIFT);
-}
-
-/*
- * omap3isp_resizer_busy - Checks if ISP resizer is busy.
- *
- * Returns busy field from ISPRSZ_PCR register.
- */
-int omap3isp_resizer_busy(struct isp_res_device *res)
-{
- struct isp_device *isp = to_isp_device(res);
-
- return isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR) &
- ISPRSZ_PCR_BUSY;
-}
-
-/*
- * resizer_set_inaddr - Sets the memory address of the input frame.
- * @addr: 32bit memory address aligned on 32byte boundary.
- */
-static void resizer_set_inaddr(struct isp_res_device *res, u32 addr)
-{
- res->addr_base = addr;
-
- /* This will handle crop settings in stream off state */
- if (res->crop_offset)
- addr += res->crop_offset & ~0x1f;
-
- __resizer_set_inaddr(res, addr);
-}
-
-/*
- * Configures the memory address to which the output frame is written.
- * @addr: 32bit memory address aligned on 32byte boundary.
- * Note: For SBL efficiency reasons the address should be on a 256-byte
- * boundary.
- */
-static void resizer_set_outaddr(struct isp_res_device *res, u32 addr)
-{
- struct isp_device *isp = to_isp_device(res);
-
- /*
- * Set output address. This needs to be in its own function
- * because it changes often.
- */
- isp_reg_writel(isp, addr << ISPRSZ_SDR_OUTADD_ADDR_SHIFT,
- OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTADD);
-}
-
-/*
- * resizer_print_status - Prints the values of the resizer module registers.
- */
-#define RSZ_PRINT_REGISTER(isp, name)\
- dev_dbg(isp->dev, "###RSZ " #name "=0x%08x\n", \
- isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_##name))
-
-static void resizer_print_status(struct isp_res_device *res)
-{
- struct isp_device *isp = to_isp_device(res);
-
- dev_dbg(isp->dev, "-------------Resizer Register dump----------\n");
-
- RSZ_PRINT_REGISTER(isp, PCR);
- RSZ_PRINT_REGISTER(isp, CNT);
- RSZ_PRINT_REGISTER(isp, OUT_SIZE);
- RSZ_PRINT_REGISTER(isp, IN_START);
- RSZ_PRINT_REGISTER(isp, IN_SIZE);
- RSZ_PRINT_REGISTER(isp, SDR_INADD);
- RSZ_PRINT_REGISTER(isp, SDR_INOFF);
- RSZ_PRINT_REGISTER(isp, SDR_OUTADD);
- RSZ_PRINT_REGISTER(isp, SDR_OUTOFF);
- RSZ_PRINT_REGISTER(isp, YENH);
-
- dev_dbg(isp->dev, "--------------------------------------------\n");
-}
-
-/*
- * resizer_calc_ratios - Helper function for calculating resizer ratios
- * @res: pointer to resizer private data structure
- * @input: input frame size
- * @output: output frame size
- * @ratio : return calculated ratios
- * return none
- *
- * The resizer uses a polyphase sample rate converter. The upsampling filter
- * has a fixed number of phases that depend on the resizing ratio. As the ratio
- * computation depends on the number of phases, we need to compute a first
- * approximation and then refine it.
- *
- * The input/output/ratio relationship is given by the OMAP34xx TRM:
- *
- * - 8-phase, 4-tap mode (RSZ = 64 ~ 512)
- * iw = (32 * sph + (ow - 1) * hrsz + 16) >> 8 + 7
- * ih = (32 * spv + (oh - 1) * vrsz + 16) >> 8 + 4
- * - 4-phase, 7-tap mode (RSZ = 513 ~ 1024)
- * iw = (64 * sph + (ow - 1) * hrsz + 32) >> 8 + 7
- * ih = (64 * spv + (oh - 1) * vrsz + 32) >> 8 + 7
- *
- * iw and ih are the input width and height after cropping. Those equations need
- * to be satisfied exactly for the resizer to work correctly.
- *
- * The equations can't be easily reverted, as the >> 8 operation is not linear.
- * In addition, not all input sizes can be achieved for a given output size. To
- * get the highest input size lower than or equal to the requested input size,
- * we need to compute the highest resizing ratio that satisfies the following
- * inequality (taking the 4-tap mode width equation as an example)
- *
- * iw >= (32 * sph + (ow - 1) * hrsz + 16) >> 8 - 7
- *
- * (where iw is the requested input width) which can be rewritten as
- *
- * iw - 7 >= (32 * sph + (ow - 1) * hrsz + 16) >> 8
- * (iw - 7) << 8 >= 32 * sph + (ow - 1) * hrsz + 16 - b
- * ((iw - 7) << 8) + b >= 32 * sph + (ow - 1) * hrsz + 16
- *
- * where b is the value of the 8 least significant bits of the right hand side
- * expression of the last inequality. The highest resizing ratio value will be
- * achieved when b is equal to its maximum value of 255. That resizing ratio
- * value will still satisfy the original inequality, as b will disappear when
- * the expression will be shifted right by 8.
- *
- * The reverted equations thus become
- *
- * - 8-phase, 4-tap mode
- * hrsz = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / (ow - 1)
- * vrsz = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / (oh - 1)
- * - 4-phase, 7-tap mode
- * hrsz = ((iw - 7) * 256 + 255 - 32 - 64 * sph) / (ow - 1)
- * vrsz = ((ih - 7) * 256 + 255 - 32 - 64 * spv) / (oh - 1)
- *
- * The ratios are integer values, and are rounded down to ensure that the
- * cropped input size is not bigger than the uncropped input size.
- *
- * As the number of phases/taps, used to select the correct equations to compute
- * the ratio, depends on the ratio, we start with the 4-tap mode equations to
- * compute an approximation of the ratio, and switch to the 7-tap mode equations
- * if the approximation is higher than the ratio threshold.
- *
- * As the 7-tap mode equations will return a ratio smaller than or equal to the
- * 4-tap mode equations, the resulting ratio could become lower than or equal to
- * the ratio threshold. This 'equations loop' isn't an issue as long as the
- * correct equations are used to compute the final input size. Starting with the
- * 4-tap mode equations ensure that, in case of values resulting in a 'ratio
- * loop', the smallest of the ratio values will be used, never exceeding the
- * requested input size.
- *
- * We first clamp the output size according to the hardware capability to avoid
- * auto-cropping the input more than required to satisfy the TRM equations. The
- * minimum output size is achieved with a scaling factor of 1024. It is thus
- * computed using the 7-tap equations.
- *
- * min ow = ((iw - 7) * 256 - 32 - 64 * sph) / 1024 + 1
- * min oh = ((ih - 7) * 256 - 32 - 64 * spv) / 1024 + 1
- *
- * Similarly, the maximum output size is achieved with a scaling factor of 64
- * and computed using the 4-tap equations.
- *
- * max ow = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / 64 + 1
- * max oh = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1
- *
- * The additional +255 term compensates for the round down operation performed
- * by the TRM equations when shifting the value right by 8 bits.
- *
- * We then compute and clamp the ratios (x1/4 ~ x4). Clamping the output size to
- * the maximum value guarantees that the ratio value will never be smaller than
- * the minimum, but it could still slightly exceed the maximum. Clamping the
- * ratio will thus result in a resizing factor slightly larger than the
- * requested value.
- *
- * To accommodate that, and make sure the TRM equations are satisfied exactly, we
- * compute the input crop rectangle as the last step.
- *
- * As if the situation wasn't complex enough, the maximum output width depends
- * on the vertical resizing ratio. Fortunately, the output height doesn't
- * depend on the horizontal resizing ratio. We can then start by computing the
- * output height and the vertical ratio, and then move to computing the output
- * width and the horizontal ratio.
- */
-static void resizer_calc_ratios(struct isp_res_device *res,
- struct v4l2_rect *input,
- struct v4l2_mbus_framefmt *output,
- struct resizer_ratio *ratio)
-{
- struct isp_device *isp = to_isp_device(res);
- const unsigned int spv = DEFAULT_PHASE;
- const unsigned int sph = DEFAULT_PHASE;
- unsigned int upscaled_width;
- unsigned int upscaled_height;
- unsigned int min_width;
- unsigned int min_height;
- unsigned int max_width;
- unsigned int max_height;
- unsigned int width_alignment;
- unsigned int width;
- unsigned int height;
-
- /*
- * Clamp the output height based on the hardware capabilities and
- * compute the vertical resizing ratio.
- */
- min_height = ((input->height - 7) * 256 - 32 - 64 * spv) / 1024 + 1;
- min_height = max_t(unsigned int, min_height, MIN_OUT_HEIGHT);
- max_height = ((input->height - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1;
- max_height = min_t(unsigned int, max_height, MAX_OUT_HEIGHT);
- output->height = clamp(output->height, min_height, max_height);
-
- ratio->vert = ((input->height - 4) * 256 + 255 - 16 - 32 * spv)
- / (output->height - 1);
- if (ratio->vert > MID_RESIZE_VALUE)
- ratio->vert = ((input->height - 7) * 256 + 255 - 32 - 64 * spv)
- / (output->height - 1);
- ratio->vert = clamp_t(unsigned int, ratio->vert,
- MIN_RESIZE_VALUE, MAX_RESIZE_VALUE);
-
- if (ratio->vert <= MID_RESIZE_VALUE) {
- upscaled_height = (output->height - 1) * ratio->vert
- + 32 * spv + 16;
- height = (upscaled_height >> 8) + 4;
- } else {
- upscaled_height = (output->height - 1) * ratio->vert
- + 64 * spv + 32;
- height = (upscaled_height >> 8) + 7;
- }
-
- /*
- * Compute the minimum and maximum output widths based on the hardware
- * capabilities. The maximum depends on the vertical resizing ratio.
- */
- min_width = ((input->width - 7) * 256 - 32 - 64 * sph) / 1024 + 1;
- min_width = max_t(unsigned int, min_width, MIN_OUT_WIDTH);
-
- if (ratio->vert <= MID_RESIZE_VALUE) {
- switch (isp->revision) {
- case ISP_REVISION_1_0:
- max_width = MAX_4TAP_OUT_WIDTH_ES1;
- break;
-
- case ISP_REVISION_2_0:
- default:
- max_width = MAX_4TAP_OUT_WIDTH_ES2;
- break;
-
- case ISP_REVISION_15_0:
- max_width = MAX_4TAP_OUT_WIDTH_3630;
- break;
- }
- } else {
- switch (isp->revision) {
- case ISP_REVISION_1_0:
- max_width = MAX_7TAP_OUT_WIDTH_ES1;
- break;
-
- case ISP_REVISION_2_0:
- default:
- max_width = MAX_7TAP_OUT_WIDTH_ES2;
- break;
-
- case ISP_REVISION_15_0:
- max_width = MAX_7TAP_OUT_WIDTH_3630;
- break;
- }
- }
- max_width = min(((input->width - 7) * 256 + 255 - 16 - 32 * sph) / 64
- + 1, max_width);
-
- /*
- * The output width must be even, and must be a multiple of 16 bytes
- * when upscaling vertically. Clamp the output width to the valid range.
- * Take the alignment into account (the maximum width in 7-tap mode on
- * ES2 isn't a multiple of 8) and align the result up to make sure it
- * won't be smaller than the minimum.
- */
- width_alignment = ratio->vert < 256 ? 8 : 2;
- output->width = clamp(output->width, min_width,
- max_width & ~(width_alignment - 1));
- output->width = ALIGN(output->width, width_alignment);
-
- ratio->horz = ((input->width - 7) * 256 + 255 - 16 - 32 * sph)
- / (output->width - 1);
- if (ratio->horz > MID_RESIZE_VALUE)
- ratio->horz = ((input->width - 7) * 256 + 255 - 32 - 64 * sph)
- / (output->width - 1);
- ratio->horz = clamp_t(unsigned int, ratio->horz,
- MIN_RESIZE_VALUE, MAX_RESIZE_VALUE);
-
- if (ratio->horz <= MID_RESIZE_VALUE) {
- upscaled_width = (output->width - 1) * ratio->horz
- + 32 * sph + 16;
- width = (upscaled_width >> 8) + 7;
- } else {
- upscaled_width = (output->width - 1) * ratio->horz
- + 64 * sph + 32;
- width = (upscaled_width >> 8) + 7;
- }
-
- /* Center the new crop rectangle. */
- input->left += (input->width - width) / 2;
- input->top += (input->height - height) / 2;
- input->width = width;
- input->height = height;
-}
-
-/*
- * resizer_set_crop_params - Setup hardware with cropping parameters
- * @res : resizer private structure
- * @input : format on sink pad
- * @output : format on source pad
- * return none
- */
-static void resizer_set_crop_params(struct isp_res_device *res,
- const struct v4l2_mbus_framefmt *input,
- const struct v4l2_mbus_framefmt *output)
-{
- resizer_set_ratio(res, &res->ratio);
-
- /* Set chrominance horizontal algorithm */
- if (res->ratio.horz >= RESIZE_DIVISOR)
- resizer_set_bilinear(res, RSZ_THE_SAME);
- else
- resizer_set_bilinear(res, RSZ_BILINEAR);
-
- resizer_adjust_bandwidth(res);
-
- if (res->input == RESIZER_INPUT_MEMORY) {
- /* Calculate additional offset for crop */
- res->crop_offset = (res->crop.active.top * input->width +
- res->crop.active.left) * 2;
- /*
- * Write lowest 4 bits of horizontal pixel offset (in pixels),
- * vertical start must be 0.
- */
- resizer_set_start(res, (res->crop_offset / 2) & 0xf, 0);
-
- /*
- * Set start (read) address for cropping, in bytes.
- * Lowest 5 bits must be zero.
- */
- __resizer_set_inaddr(res,
- res->addr_base + (res->crop_offset & ~0x1f));
- } else {
- /*
- * Set vertical start line and horizontal starting pixel.
- * If the input is from CCDC/PREV, horizontal start field is
- * in bytes (twice number of pixels).
- */
- resizer_set_start(res, res->crop.active.left * 2,
- res->crop.active.top);
- /* Input address and offset must be 0 for preview/ccdc input */
- __resizer_set_inaddr(res, 0);
- resizer_set_input_offset(res, 0);
- }
-
- /* Set the input size */
- resizer_set_input_size(res, res->crop.active.width,
- res->crop.active.height);
-}
-
-static void resizer_configure(struct isp_res_device *res)
-{
- struct v4l2_mbus_framefmt *informat, *outformat;
- struct resizer_luma_yenh luma = {0, 0, 0, 0};
-
- resizer_set_source(res, res->input);
-
- informat = &res->formats[RESZ_PAD_SINK];
- outformat = &res->formats[RESZ_PAD_SOURCE];
-
- /* RESZ_PAD_SINK */
- if (res->input == RESIZER_INPUT_VP)
- resizer_set_input_offset(res, 0);
- else
- resizer_set_input_offset(res, ALIGN(informat->width, 0x10) * 2);
-
- /* YUV422 interleaved, default phase, no luma enhancement */
- resizer_set_intype(res, RSZ_YUV422);
- resizer_set_ycpos(res, informat->code);
- resizer_set_phase(res, DEFAULT_PHASE, DEFAULT_PHASE);
- resizer_set_luma(res, &luma);
-
- /* RESZ_PAD_SOURCE */
- resizer_set_output_offset(res, ALIGN(outformat->width * 2, 32));
- resizer_set_output_size(res, outformat->width, outformat->height);
-
- resizer_set_crop_params(res, informat, outformat);
-}
-
-/* -----------------------------------------------------------------------------
- * Interrupt handling
- */
-
-static void resizer_enable_oneshot(struct isp_res_device *res)
-{
- struct isp_device *isp = to_isp_device(res);
-
- isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR,
- ISPRSZ_PCR_ENABLE | ISPRSZ_PCR_ONESHOT);
-}
-
-void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res)
-{
- /*
- * If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun
- * condition, the module was paused and now we have a buffer queued
- * on the output again. Restart the pipeline if running in continuous
- * mode.
- */
- if (res->state == ISP_PIPELINE_STREAM_CONTINUOUS &&
- res->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) {
- resizer_enable_oneshot(res);
- isp_video_dmaqueue_flags_clr(&res->video_out);
- }
-}
-
-static void resizer_isr_buffer(struct isp_res_device *res)
-{
- struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity);
- struct isp_buffer *buffer;
- int restart = 0;
-
- if (res->state == ISP_PIPELINE_STREAM_STOPPED)
- return;
-
- /* Complete the output buffer and, if reading from memory, the input
- * buffer.
- */
- buffer = omap3isp_video_buffer_next(&res->video_out);
- if (buffer != NULL) {
- resizer_set_outaddr(res, buffer->dma);
- restart = 1;
- }
-
- pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
-
- if (res->input == RESIZER_INPUT_MEMORY) {
- buffer = omap3isp_video_buffer_next(&res->video_in);
- if (buffer != NULL)
- resizer_set_inaddr(res, buffer->dma);
- pipe->state |= ISP_PIPELINE_IDLE_INPUT;
- }
-
- if (res->state == ISP_PIPELINE_STREAM_SINGLESHOT) {
- if (isp_pipeline_ready(pipe))
- omap3isp_pipeline_set_stream(pipe,
- ISP_PIPELINE_STREAM_SINGLESHOT);
- } else {
- /* If an underrun occurs, the video queue operation handler will
- * restart the resizer. Otherwise restart it immediately.
- */
- if (restart)
- resizer_enable_oneshot(res);
- }
-}
-
-/*
- * omap3isp_resizer_isr - ISP resizer interrupt handler
- *
- * Manage the resizer video buffers and configure shadowed and busy-locked
- * registers.
- */
-void omap3isp_resizer_isr(struct isp_res_device *res)
-{
- struct v4l2_mbus_framefmt *informat, *outformat;
- unsigned long flags;
-
- if (omap3isp_module_sync_is_stopping(&res->wait, &res->stopping))
- return;
-
- spin_lock_irqsave(&res->lock, flags);
-
- if (res->applycrop) {
- outformat = __resizer_get_format(res, NULL, RESZ_PAD_SOURCE,
- V4L2_SUBDEV_FORMAT_ACTIVE);
- informat = __resizer_get_format(res, NULL, RESZ_PAD_SINK,
- V4L2_SUBDEV_FORMAT_ACTIVE);
- resizer_set_crop_params(res, informat, outformat);
- res->applycrop = 0;
- }
-
- spin_unlock_irqrestore(&res->lock, flags);
-
- resizer_isr_buffer(res);
-}
-
-/* -----------------------------------------------------------------------------
- * ISP video operations
- */
-
-static int resizer_video_queue(struct isp_video *video,
- struct isp_buffer *buffer)
-{
- struct isp_res_device *res = &video->isp->isp_res;
-
- if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
- resizer_set_inaddr(res, buffer->dma);
-
- /*
- * We now have a buffer queued on the output. Despite what the
- * TRM says, the resizer can't be restarted immediately.
- * Enabling it in one shot mode in the middle of a frame (or at
- * least asynchronously to the frame) results in the output
- * being shifted randomly left/right and up/down, as if the
- * hardware didn't synchronize itself to the beginning of the
- * frame correctly.
- *
- * Restart the resizer on the next sync interrupt if running in
- * continuous mode or when starting the stream.
- */
- if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
- resizer_set_outaddr(res, buffer->dma);
-
- return 0;
-}
-
-static const struct isp_video_operations resizer_video_ops = {
- .queue = resizer_video_queue,
-};
-
-/* -----------------------------------------------------------------------------
- * V4L2 subdev operations
- */
-
-/*
- * resizer_set_stream - Enable/Disable streaming on resizer subdev
- * @sd: ISP resizer V4L2 subdev
- * @enable: 1 == Enable, 0 == Disable
- *
- * The resizer hardware can't be enabled without a memory buffer to write to.
- * As the s_stream operation is called in response to a STREAMON call without
- * any buffer queued yet, just update the state field and return immediately.
- * The resizer will be enabled in resizer_video_queue().
- */
-static int resizer_set_stream(struct v4l2_subdev *sd, int enable)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct isp_video *video_out = &res->video_out;
- struct isp_device *isp = to_isp_device(res);
- struct device *dev = to_device(res);
-
- if (res->state == ISP_PIPELINE_STREAM_STOPPED) {
- if (enable == ISP_PIPELINE_STREAM_STOPPED)
- return 0;
-
- omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_RESIZER);
- resizer_configure(res);
- resizer_print_status(res);
- }
-
- switch (enable) {
- case ISP_PIPELINE_STREAM_CONTINUOUS:
- omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE);
- if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) {
- resizer_enable_oneshot(res);
- isp_video_dmaqueue_flags_clr(video_out);
- }
- break;
-
- case ISP_PIPELINE_STREAM_SINGLESHOT:
- if (res->input == RESIZER_INPUT_MEMORY)
- omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_READ);
- omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE);
-
- resizer_enable_oneshot(res);
- break;
-
- case ISP_PIPELINE_STREAM_STOPPED:
- if (omap3isp_module_sync_idle(&sd->entity, &res->wait,
- &res->stopping))
- dev_dbg(dev, "%s: module stop timeout.\n", sd->name);
- omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_RESIZER_READ |
- OMAP3_ISP_SBL_RESIZER_WRITE);
- omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_RESIZER);
- isp_video_dmaqueue_flags_clr(video_out);
- break;
- }
-
- res->state = enable;
- return 0;
-}
-
-/*
- * resizer_try_crop - mangles crop parameters.
- */
-static void resizer_try_crop(const struct v4l2_mbus_framefmt *sink,
- const struct v4l2_mbus_framefmt *source,
- struct v4l2_rect *crop)
-{
- const unsigned int spv = DEFAULT_PHASE;
- const unsigned int sph = DEFAULT_PHASE;
-
- /* Crop rectangle is constrained by the output size so that zoom ratio
- * cannot exceed +/-4.0.
- */
- unsigned int min_width =
- ((32 * sph + (source->width - 1) * 64 + 16) >> 8) + 7;
- unsigned int min_height =
- ((32 * spv + (source->height - 1) * 64 + 16) >> 8) + 4;
- unsigned int max_width =
- ((64 * sph + (source->width - 1) * 1024 + 32) >> 8) + 7;
- unsigned int max_height =
- ((64 * spv + (source->height - 1) * 1024 + 32) >> 8) + 7;
-
- crop->width = clamp_t(u32, crop->width, min_width, max_width);
- crop->height = clamp_t(u32, crop->height, min_height, max_height);
-
- /* Crop can not go beyond of the input rectangle */
- crop->left = clamp_t(u32, crop->left, 0, sink->width - MIN_IN_WIDTH);
- crop->width = clamp_t(u32, crop->width, MIN_IN_WIDTH,
- sink->width - crop->left);
- crop->top = clamp_t(u32, crop->top, 0, sink->height - MIN_IN_HEIGHT);
- crop->height = clamp_t(u32, crop->height, MIN_IN_HEIGHT,
- sink->height - crop->top);
-}
-
-/*
- * resizer_get_selection - Retrieve a selection rectangle on a pad
- * @sd: ISP resizer V4L2 subdevice
- * @cfg: V4L2 subdev pad configuration
- * @sel: Selection rectangle
- *
- * The only supported rectangles are the crop rectangles on the sink pad.
- *
- * Return 0 on success or a negative error code otherwise.
- */
-static int resizer_get_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_selection *sel)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt *format_source;
- struct v4l2_mbus_framefmt *format_sink;
- struct resizer_ratio ratio;
-
- if (sel->pad != RESZ_PAD_SINK)
- return -EINVAL;
-
- format_sink = __resizer_get_format(res, sd_state, RESZ_PAD_SINK,
- sel->which);
- format_source = __resizer_get_format(res, sd_state, RESZ_PAD_SOURCE,
- sel->which);
-
- switch (sel->target) {
- case V4L2_SEL_TGT_CROP_BOUNDS:
- sel->r.left = 0;
- sel->r.top = 0;
- sel->r.width = INT_MAX;
- sel->r.height = INT_MAX;
-
- resizer_try_crop(format_sink, format_source, &sel->r);
- resizer_calc_ratios(res, &sel->r, format_source, &ratio);
- break;
-
- case V4L2_SEL_TGT_CROP:
- sel->r = *__resizer_get_crop(res, sd_state, sel->which);
- resizer_calc_ratios(res, &sel->r, format_source, &ratio);
- break;
-
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-/*
- * resizer_set_selection - Set a selection rectangle on a pad
- * @sd: ISP resizer V4L2 subdevice
- * @cfg: V4L2 subdev pad configuration
- * @sel: Selection rectangle
- *
- * The only supported rectangle is the actual crop rectangle on the sink pad.
- *
- * FIXME: This function currently behaves as if the KEEP_CONFIG selection flag
- * was always set.
- *
- * Return 0 on success or a negative error code otherwise.
- */
-static int resizer_set_selection(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_selection *sel)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct isp_device *isp = to_isp_device(res);
- const struct v4l2_mbus_framefmt *format_sink;
- struct v4l2_mbus_framefmt format_source;
- struct resizer_ratio ratio;
- unsigned long flags;
-
- if (sel->target != V4L2_SEL_TGT_CROP ||
- sel->pad != RESZ_PAD_SINK)
- return -EINVAL;
-
- format_sink = __resizer_get_format(res, sd_state, RESZ_PAD_SINK,
- sel->which);
- format_source = *__resizer_get_format(res, sd_state, RESZ_PAD_SOURCE,
- sel->which);
-
- dev_dbg(isp->dev, "%s(%s): req %ux%u -> (%d,%d)/%ux%u -> %ux%u\n",
- __func__, sel->which == V4L2_SUBDEV_FORMAT_TRY ? "try" : "act",
- format_sink->width, format_sink->height,
- sel->r.left, sel->r.top, sel->r.width, sel->r.height,
- format_source.width, format_source.height);
-
- /* Clamp the crop rectangle to the bounds, and then mangle it further to
- * fulfill the TRM equations. Store the clamped but otherwise unmangled
- * rectangle to avoid cropping the input multiple times: when an
- * application sets the output format, the current crop rectangle is
- * mangled during crop rectangle computation, which would lead to a new,
- * smaller input crop rectangle every time the output size is set if we
- * stored the mangled rectangle.
- */
- resizer_try_crop(format_sink, &format_source, &sel->r);
- *__resizer_get_crop(res, sd_state, sel->which) = sel->r;
- resizer_calc_ratios(res, &sel->r, &format_source, &ratio);
-
- dev_dbg(isp->dev, "%s(%s): got %ux%u -> (%d,%d)/%ux%u -> %ux%u\n",
- __func__, sel->which == V4L2_SUBDEV_FORMAT_TRY ? "try" : "act",
- format_sink->width, format_sink->height,
- sel->r.left, sel->r.top, sel->r.width, sel->r.height,
- format_source.width, format_source.height);
-
- if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
- *__resizer_get_format(res, sd_state, RESZ_PAD_SOURCE,
- sel->which) =
- format_source;
- return 0;
- }
-
- /* Update the source format, resizing ratios and crop rectangle. If
- * streaming is on the IRQ handler will reprogram the resizer after the
- * current frame. We thus we need to protect against race conditions.
- */
- spin_lock_irqsave(&res->lock, flags);
-
- *__resizer_get_format(res, sd_state, RESZ_PAD_SOURCE, sel->which) =
- format_source;
-
- res->ratio = ratio;
- res->crop.active = sel->r;
-
- if (res->state != ISP_PIPELINE_STREAM_STOPPED)
- res->applycrop = 1;
-
- spin_unlock_irqrestore(&res->lock, flags);
-
- return 0;
-}
-
-/* resizer pixel formats */
-static const unsigned int resizer_formats[] = {
- MEDIA_BUS_FMT_UYVY8_1X16,
- MEDIA_BUS_FMT_YUYV8_1X16,
-};
-
-static unsigned int resizer_max_in_width(struct isp_res_device *res)
-{
- struct isp_device *isp = to_isp_device(res);
-
- if (res->input == RESIZER_INPUT_MEMORY) {
- return MAX_IN_WIDTH_MEMORY_MODE;
- } else {
- if (isp->revision == ISP_REVISION_1_0)
- return MAX_IN_WIDTH_ONTHEFLY_MODE_ES1;
- else
- return MAX_IN_WIDTH_ONTHEFLY_MODE_ES2;
- }
-}
-
-/*
- * resizer_try_format - Handle try format by pad subdev method
- * @res : ISP resizer device
- * @cfg: V4L2 subdev pad configuration
- * @pad : pad num
- * @fmt : pointer to v4l2 format structure
- * @which : wanted subdev format
- */
-static void resizer_try_format(struct isp_res_device *res,
- struct v4l2_subdev_state *sd_state,
- unsigned int pad,
- struct v4l2_mbus_framefmt *fmt,
- enum v4l2_subdev_format_whence which)
-{
- struct v4l2_mbus_framefmt *format;
- struct resizer_ratio ratio;
- struct v4l2_rect crop;
-
- switch (pad) {
- case RESZ_PAD_SINK:
- if (fmt->code != MEDIA_BUS_FMT_YUYV8_1X16 &&
- fmt->code != MEDIA_BUS_FMT_UYVY8_1X16)
- fmt->code = MEDIA_BUS_FMT_YUYV8_1X16;
-
- fmt->width = clamp_t(u32, fmt->width, MIN_IN_WIDTH,
- resizer_max_in_width(res));
- fmt->height = clamp_t(u32, fmt->height, MIN_IN_HEIGHT,
- MAX_IN_HEIGHT);
- break;
-
- case RESZ_PAD_SOURCE:
- format = __resizer_get_format(res, sd_state, RESZ_PAD_SINK,
- which);
- fmt->code = format->code;
-
- crop = *__resizer_get_crop(res, sd_state, which);
- resizer_calc_ratios(res, &crop, fmt, &ratio);
- break;
- }
-
- fmt->colorspace = V4L2_COLORSPACE_JPEG;
- fmt->field = V4L2_FIELD_NONE;
-}
-
-/*
- * resizer_enum_mbus_code - Handle pixel format enumeration
- * @sd : pointer to v4l2 subdev structure
- * @cfg: V4L2 subdev pad configuration
- * @code : pointer to v4l2_subdev_mbus_code_enum structure
- * return -EINVAL or zero on success
- */
-static int resizer_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_mbus_code_enum *code)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt *format;
-
- if (code->pad == RESZ_PAD_SINK) {
- if (code->index >= ARRAY_SIZE(resizer_formats))
- return -EINVAL;
-
- code->code = resizer_formats[code->index];
- } else {
- if (code->index != 0)
- return -EINVAL;
-
- format = __resizer_get_format(res, sd_state, RESZ_PAD_SINK,
- code->which);
- code->code = format->code;
- }
-
- return 0;
-}
-
-static int resizer_enum_frame_size(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_frame_size_enum *fse)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt format;
-
- if (fse->index != 0)
- return -EINVAL;
-
- format.code = fse->code;
- format.width = 1;
- format.height = 1;
- resizer_try_format(res, sd_state, fse->pad, &format, fse->which);
- fse->min_width = format.width;
- fse->min_height = format.height;
-
- if (format.code != fse->code)
- return -EINVAL;
-
- format.code = fse->code;
- format.width = -1;
- format.height = -1;
- resizer_try_format(res, sd_state, fse->pad, &format, fse->which);
- fse->max_width = format.width;
- fse->max_height = format.height;
-
- return 0;
-}
-
-/*
- * resizer_get_format - Handle get format by pads subdev method
- * @sd : pointer to v4l2 subdev structure
- * @cfg: V4L2 subdev pad configuration
- * @fmt : pointer to v4l2 subdev format structure
- * return -EINVAL or zero on success
- */
-static int resizer_get_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt *format;
-
- format = __resizer_get_format(res, sd_state, fmt->pad, fmt->which);
- if (format == NULL)
- return -EINVAL;
-
- fmt->format = *format;
- return 0;
-}
-
-/*
- * resizer_set_format - Handle set format by pads subdev method
- * @sd : pointer to v4l2 subdev structure
- * @cfg: V4L2 subdev pad configuration
- * @fmt : pointer to v4l2 subdev format structure
- * return -EINVAL or zero on success
- */
-static int resizer_set_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct v4l2_mbus_framefmt *format;
- struct v4l2_rect *crop;
-
- format = __resizer_get_format(res, sd_state, fmt->pad, fmt->which);
- if (format == NULL)
- return -EINVAL;
-
- resizer_try_format(res, sd_state, fmt->pad, &fmt->format, fmt->which);
- *format = fmt->format;
-
- if (fmt->pad == RESZ_PAD_SINK) {
- /* reset crop rectangle */
- crop = __resizer_get_crop(res, sd_state, fmt->which);
- crop->left = 0;
- crop->top = 0;
- crop->width = fmt->format.width;
- crop->height = fmt->format.height;
-
- /* Propagate the format from sink to source */
- format = __resizer_get_format(res, sd_state, RESZ_PAD_SOURCE,
- fmt->which);
- *format = fmt->format;
- resizer_try_format(res, sd_state, RESZ_PAD_SOURCE, format,
- fmt->which);
- }
-
- if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
- /* Compute and store the active crop rectangle and resizer
- * ratios. format already points to the source pad active
- * format.
- */
- res->crop.active = res->crop.request;
- resizer_calc_ratios(res, &res->crop.active, format,
- &res->ratio);
- }
-
- return 0;
-}
-
-static int resizer_link_validate(struct v4l2_subdev *sd,
- struct media_link *link,
- struct v4l2_subdev_format *source_fmt,
- struct v4l2_subdev_format *sink_fmt)
-{
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- struct isp_pipeline *pipe = to_isp_pipeline(&sd->entity);
-
- omap3isp_resizer_max_rate(res, &pipe->max_rate);
-
- return v4l2_subdev_link_validate_default(sd, link,
- source_fmt, sink_fmt);
-}
-
-/*
- * resizer_init_formats - Initialize formats on all pads
- * @sd: ISP resizer V4L2 subdevice
- * @fh: V4L2 subdev file handle
- *
- * Initialize all pad formats with default values. If fh is not NULL, try
- * formats are initialized on the file handle. Otherwise active formats are
- * initialized on the device.
- */
-static int resizer_init_formats(struct v4l2_subdev *sd,
- struct v4l2_subdev_fh *fh)
-{
- struct v4l2_subdev_format format;
-
- memset(&format, 0, sizeof(format));
- format.pad = RESZ_PAD_SINK;
- format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
- format.format.code = MEDIA_BUS_FMT_YUYV8_1X16;
- format.format.width = 4096;
- format.format.height = 4096;
- resizer_set_format(sd, fh ? fh->state : NULL, &format);
-
- return 0;
-}
-
-/* subdev video operations */
-static const struct v4l2_subdev_video_ops resizer_v4l2_video_ops = {
- .s_stream = resizer_set_stream,
-};
-
-/* subdev pad operations */
-static const struct v4l2_subdev_pad_ops resizer_v4l2_pad_ops = {
- .enum_mbus_code = resizer_enum_mbus_code,
- .enum_frame_size = resizer_enum_frame_size,
- .get_fmt = resizer_get_format,
- .set_fmt = resizer_set_format,
- .get_selection = resizer_get_selection,
- .set_selection = resizer_set_selection,
- .link_validate = resizer_link_validate,
-};
-
-/* subdev operations */
-static const struct v4l2_subdev_ops resizer_v4l2_ops = {
- .video = &resizer_v4l2_video_ops,
- .pad = &resizer_v4l2_pad_ops,
-};
-
-/* subdev internal operations */
-static const struct v4l2_subdev_internal_ops resizer_v4l2_internal_ops = {
- .open = resizer_init_formats,
-};
-
-/* -----------------------------------------------------------------------------
- * Media entity operations
- */
-
-/*
- * resizer_link_setup - Setup resizer connections.
- * @entity : Pointer to media entity structure
- * @local : Pointer to local pad array
- * @remote : Pointer to remote pad array
- * @flags : Link flags
- * return -EINVAL or zero on success
- */
-static int resizer_link_setup(struct media_entity *entity,
- const struct media_pad *local,
- const struct media_pad *remote, u32 flags)
-{
- struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
- struct isp_res_device *res = v4l2_get_subdevdata(sd);
- unsigned int index = local->index;
-
- /* FIXME: this is actually a hack! */
- if (is_media_entity_v4l2_subdev(remote->entity))
- index |= 2 << 16;
-
- switch (index) {
- case RESZ_PAD_SINK:
- /* read from memory */
- if (flags & MEDIA_LNK_FL_ENABLED) {
- if (res->input == RESIZER_INPUT_VP)
- return -EBUSY;
- res->input = RESIZER_INPUT_MEMORY;
- } else {
- if (res->input == RESIZER_INPUT_MEMORY)
- res->input = RESIZER_INPUT_NONE;
- }
- break;
-
- case RESZ_PAD_SINK | 2 << 16:
- /* read from ccdc or previewer */
- if (flags & MEDIA_LNK_FL_ENABLED) {
- if (res->input == RESIZER_INPUT_MEMORY)
- return -EBUSY;
- res->input = RESIZER_INPUT_VP;
- } else {
- if (res->input == RESIZER_INPUT_VP)
- res->input = RESIZER_INPUT_NONE;
- }
- break;
-
- case RESZ_PAD_SOURCE:
- /* resizer always write to memory */
- break;
-
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-/* media operations */
-static const struct media_entity_operations resizer_media_ops = {
- .link_setup = resizer_link_setup,
- .link_validate = v4l2_subdev_link_validate,
-};
-
-void omap3isp_resizer_unregister_entities(struct isp_res_device *res)
-{
- v4l2_device_unregister_subdev(&res->subdev);
- omap3isp_video_unregister(&res->video_in);
- omap3isp_video_unregister(&res->video_out);
-}
-
-int omap3isp_resizer_register_entities(struct isp_res_device *res,
- struct v4l2_device *vdev)
-{
- int ret;
-
- /* Register the subdev and video nodes. */
- res->subdev.dev = vdev->mdev->dev;
- ret = v4l2_device_register_subdev(vdev, &res->subdev);
- if (ret < 0)
- goto error;
-
- ret = omap3isp_video_register(&res->video_in, vdev);
- if (ret < 0)
- goto error;
-
- ret = omap3isp_video_register(&res->video_out, vdev);
- if (ret < 0)
- goto error;
-
- return 0;
-
-error:
- omap3isp_resizer_unregister_entities(res);
- return ret;
-}
-
-/* -----------------------------------------------------------------------------
- * ISP resizer initialization and cleanup
- */
-
-/*
- * resizer_init_entities - Initialize resizer subdev and media entity.
- * @res : Pointer to resizer device structure
- * return -ENOMEM or zero on success
- */
-static int resizer_init_entities(struct isp_res_device *res)
-{
- struct v4l2_subdev *sd = &res->subdev;
- struct media_pad *pads = res->pads;
- struct media_entity *me = &sd->entity;
- int ret;
-
- res->input = RESIZER_INPUT_NONE;
-
- v4l2_subdev_init(sd, &resizer_v4l2_ops);
- sd->internal_ops = &resizer_v4l2_internal_ops;
- strscpy(sd->name, "OMAP3 ISP resizer", sizeof(sd->name));
- sd->grp_id = 1 << 16; /* group ID for isp subdevs */
- v4l2_set_subdevdata(sd, res);
- sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-
- pads[RESZ_PAD_SINK].flags = MEDIA_PAD_FL_SINK
- | MEDIA_PAD_FL_MUST_CONNECT;
- pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
-
- me->ops = &resizer_media_ops;
- ret = media_entity_pads_init(me, RESZ_PADS_NUM, pads);
- if (ret < 0)
- return ret;
-
- resizer_init_formats(sd, NULL);
-
- res->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
- res->video_in.ops = &resizer_video_ops;
- res->video_in.isp = to_isp_device(res);
- res->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
- res->video_in.bpl_alignment = 32;
- res->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- res->video_out.ops = &resizer_video_ops;
- res->video_out.isp = to_isp_device(res);
- res->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
- res->video_out.bpl_alignment = 32;
-
- ret = omap3isp_video_init(&res->video_in, "resizer");
- if (ret < 0)
- goto error_video_in;
-
- ret = omap3isp_video_init(&res->video_out, "resizer");
- if (ret < 0)
- goto error_video_out;
-
- res->video_out.video.entity.flags |= MEDIA_ENT_FL_DEFAULT;
-
- return 0;
-
-error_video_out:
- omap3isp_video_cleanup(&res->video_in);
-error_video_in:
- media_entity_cleanup(&res->subdev.entity);
- return ret;
-}
-
-/*
- * isp_resizer_init - Resizer initialization.
- * @isp : Pointer to ISP device
- * return -ENOMEM or zero on success
- */
-int omap3isp_resizer_init(struct isp_device *isp)
-{
- struct isp_res_device *res = &isp->isp_res;
-
- init_waitqueue_head(&res->wait);
- atomic_set(&res->stopping, 0);
- spin_lock_init(&res->lock);
-
- return resizer_init_entities(res);
-}
-
-void omap3isp_resizer_cleanup(struct isp_device *isp)
-{
- struct isp_res_device *res = &isp->isp_res;
-
- omap3isp_video_cleanup(&res->video_in);
- omap3isp_video_cleanup(&res->video_out);
- media_entity_cleanup(&res->subdev.entity);
-}