From 714148260d0585aedf72bd4d6d0a909886b0e9e1 Mon Sep 17 00:00:00 2001 From: Sergio Aguirre Date: Mon, 24 Jan 2011 15:48:19 -0300 Subject: [PATCH] [media] v4l: omap4iss: Add support for OMAP4 camera interface - IPIPE(IF) This adds a very simplistic driver to utilize the CSI2A interface inside the ISS subsystem in OMAP4, and dump the data to memory. Check Documentation/video4linux/omap4_camera.txt for details. This commit adds the IPIPEIF and IPIPE processing blocks support. Signed-off-by: Sergio Aguirre Signed-off-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/omap4iss/iss_ipipe.c | 581 +++++++++++++ drivers/staging/media/omap4iss/iss_ipipe.h | 67 ++ drivers/staging/media/omap4iss/iss_ipipeif.c | 847 +++++++++++++++++++ drivers/staging/media/omap4iss/iss_ipipeif.h | 92 ++ 4 files changed, 1587 insertions(+) create mode 100644 drivers/staging/media/omap4iss/iss_ipipe.c create mode 100644 drivers/staging/media/omap4iss/iss_ipipe.h create mode 100644 drivers/staging/media/omap4iss/iss_ipipeif.c create mode 100644 drivers/staging/media/omap4iss/iss_ipipeif.h diff --git a/drivers/staging/media/omap4iss/iss_ipipe.c b/drivers/staging/media/omap4iss/iss_ipipe.c new file mode 100644 index 000000000000..fc38a5c5c8f5 --- /dev/null +++ b/drivers/staging/media/omap4iss/iss_ipipe.c @@ -0,0 +1,581 @@ +/* + * TI OMAP4 ISS V4L2 Driver - ISP IPIPE module + * + * Copyright (C) 2012 Texas Instruments, Inc. + * + * Author: Sergio Aguirre + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "iss.h" +#include "iss_regs.h" +#include "iss_ipipe.h" + +static struct v4l2_mbus_framefmt * +__ipipe_get_format(struct iss_ipipe_device *ipipe, struct v4l2_subdev_fh *fh, + unsigned int pad, enum v4l2_subdev_format_whence which); + +static const unsigned int ipipe_fmts[] = { + V4L2_MBUS_FMT_SGRBG10_1X10, + V4L2_MBUS_FMT_SRGGB10_1X10, + V4L2_MBUS_FMT_SBGGR10_1X10, + V4L2_MBUS_FMT_SGBRG10_1X10, +}; + +/* + * ipipe_print_status - Print current IPIPE Module register values. + * @ipipe: Pointer to ISS ISP IPIPE device. + * + * Also prints other debug information stored in the IPIPE module. + */ +#define IPIPE_PRINT_REGISTER(iss, name)\ + dev_dbg(iss->dev, "###IPIPE " #name "=0x%08x\n", \ + readl(iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_##name)) + +static void ipipe_print_status(struct iss_ipipe_device *ipipe) +{ + struct iss_device *iss = to_iss_device(ipipe); + + dev_dbg(iss->dev, "-------------IPIPE Register dump-------------\n"); + + IPIPE_PRINT_REGISTER(iss, SRC_EN); + IPIPE_PRINT_REGISTER(iss, SRC_MODE); + IPIPE_PRINT_REGISTER(iss, SRC_FMT); + IPIPE_PRINT_REGISTER(iss, SRC_COL); + IPIPE_PRINT_REGISTER(iss, SRC_VPS); + IPIPE_PRINT_REGISTER(iss, SRC_VSZ); + IPIPE_PRINT_REGISTER(iss, SRC_HPS); + IPIPE_PRINT_REGISTER(iss, SRC_HSZ); + IPIPE_PRINT_REGISTER(iss, GCK_MMR); + IPIPE_PRINT_REGISTER(iss, YUV_PHS); + + dev_dbg(iss->dev, "-----------------------------------------------\n"); +} + +/* + * ipipe_enable - Enable/Disable IPIPE. + * @enable: enable flag + * + */ +static void ipipe_enable(struct iss_ipipe_device *ipipe, u8 enable) +{ + struct iss_device *iss = to_iss_device(ipipe); + + writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_EN) & + ~IPIPE_SRC_EN_EN) | + enable ? IPIPE_SRC_EN_EN : 0, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_EN); +} + +/* ----------------------------------------------------------------------------- + * Format- and pipeline-related configuration helpers + */ + +static void ipipe_configure(struct iss_ipipe_device *ipipe) +{ + struct iss_device *iss = to_iss_device(ipipe); + struct v4l2_mbus_framefmt *format; + + /* IPIPE_PAD_SINK */ + format = &ipipe->formats[IPIPE_PAD_SINK]; + + /* NOTE: Currently just supporting pipeline IN: RGB, OUT: YUV422 */ + writel(IPIPE_SRC_FMT_RAW2YUV, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_FMT); + + /* Enable YUV444 -> YUV422 conversion */ + writel(IPIPE_YUV_PHS_LPF, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_YUV_PHS); + + writel(0, iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_VPS); + writel(0, iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_HPS); + writel((format->height - 2) & IPIPE_SRC_VSZ_MASK, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_VSZ); + writel((format->width - 1) & IPIPE_SRC_HSZ_MASK, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_HSZ); + + /* Ignore ipipeif_wrt signal, and operate on-the-fly. */ + writel(readl(iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_MODE) & + ~(IPIPE_SRC_MODE_WRT | IPIPE_SRC_MODE_OST), + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_MODE); + + /* HACK: Values tuned for Ducati SW (OV) */ + writel(IPIPE_SRC_COL_EE_B | + IPIPE_SRC_COL_EO_GB | + IPIPE_SRC_COL_OE_GR | + IPIPE_SRC_COL_OO_R, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_SRC_COL); + + /* IPIPE_PAD_SOURCE_VP */ + format = &ipipe->formats[IPIPE_PAD_SOURCE_VP]; + /* Do nothing? */ + + omap4iss_isp_enable_interrupts(iss); +} + +/* ----------------------------------------------------------------------------- + * V4L2 subdev operations + */ + +/* + * ipipe_set_stream - Enable/Disable streaming on the IPIPE module + * @sd: ISP IPIPE V4L2 subdevice + * @enable: Enable/disable stream + */ +static int ipipe_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd); + struct iss_device *iss = to_iss_device(ipipe); + int ret = 0; + + if (ipipe->state == ISS_PIPELINE_STREAM_STOPPED) { + if (enable == ISS_PIPELINE_STREAM_STOPPED) + return 0; + + omap4iss_isp_subclk_enable(iss, OMAP4_ISS_ISP_SUBCLK_IPIPE); + + /* Enable clk_arm_g0 */ + writel(IPIPE_GCK_MMR_REG, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_GCK_MMR); + + /* Enable clk_pix_g[3:0] */ + writel(IPIPE_GCK_PIX_G3 | + IPIPE_GCK_PIX_G2 | + IPIPE_GCK_PIX_G1 | + IPIPE_GCK_PIX_G0, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPE] + IPIPE_GCK_PIX); + } + + switch (enable) { + case ISS_PIPELINE_STREAM_CONTINUOUS: + + ipipe_configure(ipipe); + ipipe_print_status(ipipe); + + atomic_set(&ipipe->stopping, 0); + ipipe_enable(ipipe, 1); + break; + + case ISS_PIPELINE_STREAM_STOPPED: + if (ipipe->state == ISS_PIPELINE_STREAM_STOPPED) + return 0; + if (omap4iss_module_sync_idle(&sd->entity, &ipipe->wait, + &ipipe->stopping)) + dev_dbg(iss->dev, "%s: module stop timeout.\n", + sd->name); + + ipipe_enable(ipipe, 0); + omap4iss_isp_disable_interrupts(iss); + omap4iss_isp_subclk_disable(iss, OMAP4_ISS_ISP_SUBCLK_IPIPE); + break; + } + + ipipe->state = enable; + return ret; +} + +static struct v4l2_mbus_framefmt * +__ipipe_get_format(struct iss_ipipe_device *ipipe, struct v4l2_subdev_fh *fh, + unsigned int pad, enum v4l2_subdev_format_whence which) +{ + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_format(fh, pad); + else + return &ipipe->formats[pad]; +} + +/* + * ipipe_try_format - Try video format on a pad + * @ipipe: ISS IPIPE device + * @fh : V4L2 subdev file handle + * @pad: Pad number + * @fmt: Format + */ +static void +ipipe_try_format(struct iss_ipipe_device *ipipe, struct v4l2_subdev_fh *fh, + unsigned int pad, struct v4l2_mbus_framefmt *fmt, + enum v4l2_subdev_format_whence which) +{ + struct v4l2_mbus_framefmt *format; + unsigned int width = fmt->width; + unsigned int height = fmt->height; + unsigned int i; + + switch (pad) { + case IPIPE_PAD_SINK: + for (i = 0; i < ARRAY_SIZE(ipipe_fmts); i++) { + if (fmt->code == ipipe_fmts[i]) + break; + } + + /* If not found, use SGRBG10 as default */ + if (i >= ARRAY_SIZE(ipipe_fmts)) + fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10; + + /* Clamp the input size. */ + fmt->width = clamp_t(u32, width, 1, 8192); + fmt->height = clamp_t(u32, height, 1, 8192); + fmt->colorspace = V4L2_COLORSPACE_SRGB; + break; + + case IPIPE_PAD_SOURCE_VP: + format = __ipipe_get_format(ipipe, fh, IPIPE_PAD_SINK, which); + memcpy(fmt, format, sizeof(*fmt)); + + fmt->code = V4L2_MBUS_FMT_UYVY8_1X16; + fmt->width = clamp_t(u32, width, 32, fmt->width); + fmt->height = clamp_t(u32, height, 32, fmt->height); + fmt->colorspace = V4L2_COLORSPACE_JPEG; + break; + } + + fmt->field = V4L2_FIELD_NONE; +} + +/* + * ipipe_enum_mbus_code - Handle pixel format enumeration + * @sd : pointer to v4l2 subdev structure + * @fh : V4L2 subdev file handle + * @code : pointer to v4l2_subdev_mbus_code_enum structure + * return -EINVAL or zero on success + */ +static int ipipe_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh, + struct v4l2_subdev_mbus_code_enum *code) +{ + switch (code->pad) { + case IPIPE_PAD_SINK: + if (code->index >= ARRAY_SIZE(ipipe_fmts)) + return -EINVAL; + + code->code = ipipe_fmts[code->index]; + break; + + case IPIPE_PAD_SOURCE_VP: + /* FIXME: Forced format conversion inside IPIPE ? */ + if (code->index != 0) + return -EINVAL; + + code->code = V4L2_MBUS_FMT_UYVY8_1X16; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int ipipe_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh, + struct v4l2_subdev_frame_size_enum *fse) +{ + struct iss_ipipe_device *ipipe = 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; + ipipe_try_format(ipipe, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); + 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; + ipipe_try_format(ipipe, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); + fse->max_width = format.width; + fse->max_height = format.height; + + return 0; +} + +/* + * ipipe_get_format - Retrieve the video format on a pad + * @sd : ISP IPIPE V4L2 subdevice + * @fh : V4L2 subdev file handle + * @fmt: Format + * + * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond + * to the format type. + */ +static int ipipe_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) +{ + struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + format = __ipipe_get_format(ipipe, fh, fmt->pad, fmt->which); + if (format == NULL) + return -EINVAL; + + fmt->format = *format; + return 0; +} + +/* + * ipipe_set_format - Set the video format on a pad + * @sd : ISP IPIPE V4L2 subdevice + * @fh : V4L2 subdev file handle + * @fmt: Format + * + * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond + * to the format type. + */ +static int ipipe_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) +{ + struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + format = __ipipe_get_format(ipipe, fh, fmt->pad, fmt->which); + if (format == NULL) + return -EINVAL; + + ipipe_try_format(ipipe, fh, fmt->pad, &fmt->format, fmt->which); + *format = fmt->format; + + /* Propagate the format from sink to source */ + if (fmt->pad == IPIPE_PAD_SINK) { + format = __ipipe_get_format(ipipe, fh, IPIPE_PAD_SOURCE_VP, + fmt->which); + *format = fmt->format; + ipipe_try_format(ipipe, fh, IPIPE_PAD_SOURCE_VP, format, + fmt->which); + } + + return 0; +} + +static int ipipe_link_validate(struct v4l2_subdev *sd, struct media_link *link, + struct v4l2_subdev_format *source_fmt, + struct v4l2_subdev_format *sink_fmt) +{ + /* Check if the two ends match */ + if (source_fmt->format.width != sink_fmt->format.width || + source_fmt->format.height != sink_fmt->format.height) + return -EPIPE; + + if (source_fmt->format.code != sink_fmt->format.code) + return -EPIPE; + + return 0; +} + +/* + * ipipe_init_formats - Initialize formats on all pads + * @sd: ISP IPIPE 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 ipipe_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct v4l2_subdev_format format; + + memset(&format, 0, sizeof(format)); + format.pad = IPIPE_PAD_SINK; + format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; + format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10; + format.format.width = 4096; + format.format.height = 4096; + ipipe_set_format(sd, fh, &format); + + return 0; +} + +/* V4L2 subdev video operations */ +static const struct v4l2_subdev_video_ops ipipe_v4l2_video_ops = { + .s_stream = ipipe_set_stream, +}; + +/* V4L2 subdev pad operations */ +static const struct v4l2_subdev_pad_ops ipipe_v4l2_pad_ops = { + .enum_mbus_code = ipipe_enum_mbus_code, + .enum_frame_size = ipipe_enum_frame_size, + .get_fmt = ipipe_get_format, + .set_fmt = ipipe_set_format, + .link_validate = ipipe_link_validate, +}; + +/* V4L2 subdev operations */ +static const struct v4l2_subdev_ops ipipe_v4l2_ops = { + .video = &ipipe_v4l2_video_ops, + .pad = &ipipe_v4l2_pad_ops, +}; + +/* V4L2 subdev internal operations */ +static const struct v4l2_subdev_internal_ops ipipe_v4l2_internal_ops = { + .open = ipipe_init_formats, +}; + +/* ----------------------------------------------------------------------------- + * Media entity operations + */ + +/* + * ipipe_link_setup - Setup IPIPE connections + * @entity: IPIPE media entity + * @local: Pad at the local end of the link + * @remote: Pad at the remote end of the link + * @flags: Link flags + * + * return -EINVAL or zero on success + */ +static int ipipe_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 iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd); + struct iss_device *iss = to_iss_device(ipipe); + + switch (local->index | media_entity_type(remote->entity)) { + case IPIPE_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + /* Read from IPIPEIF. */ + if (!(flags & MEDIA_LNK_FL_ENABLED)) { + ipipe->input = IPIPE_INPUT_NONE; + break; + } + + if (ipipe->input != IPIPE_INPUT_NONE) + return -EBUSY; + + if (remote->entity == &iss->ipipeif.subdev.entity) + ipipe->input = IPIPE_INPUT_IPIPEIF; + + break; + + case IPIPE_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV: + /* Send to RESIZER */ + if (flags & MEDIA_LNK_FL_ENABLED) { + if (ipipe->output & ~IPIPE_OUTPUT_VP) + return -EBUSY; + ipipe->output |= IPIPE_OUTPUT_VP; + } else { + ipipe->output &= ~IPIPE_OUTPUT_VP; + } + break; + + default: + return -EINVAL; + } + + return 0; +} + +/* media operations */ +static const struct media_entity_operations ipipe_media_ops = { + .link_setup = ipipe_link_setup, + .link_validate = v4l2_subdev_link_validate, +}; + +/* + * ipipe_init_entities - Initialize V4L2 subdev and media entity + * @ipipe: ISS ISP IPIPE module + * + * Return 0 on success and a negative error code on failure. + */ +static int ipipe_init_entities(struct iss_ipipe_device *ipipe) +{ + struct v4l2_subdev *sd = &ipipe->subdev; + struct media_pad *pads = ipipe->pads; + struct media_entity *me = &sd->entity; + int ret; + + ipipe->input = IPIPE_INPUT_NONE; + + v4l2_subdev_init(sd, &ipipe_v4l2_ops); + sd->internal_ops = &ipipe_v4l2_internal_ops; + strlcpy(sd->name, "OMAP4 ISS ISP IPIPE", sizeof(sd->name)); + sd->grp_id = 1 << 16; /* group ID for iss subdevs */ + v4l2_set_subdevdata(sd, ipipe); + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + + pads[IPIPE_PAD_SINK].flags = MEDIA_PAD_FL_SINK; + pads[IPIPE_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; + + me->ops = &ipipe_media_ops; + ret = media_entity_init(me, IPIPE_PADS_NUM, pads, 0); + if (ret < 0) + return ret; + + ipipe_init_formats(sd, NULL); + + return 0; +} + +void omap4iss_ipipe_unregister_entities(struct iss_ipipe_device *ipipe) +{ + media_entity_cleanup(&ipipe->subdev.entity); + + v4l2_device_unregister_subdev(&ipipe->subdev); +} + +int omap4iss_ipipe_register_entities(struct iss_ipipe_device *ipipe, + struct v4l2_device *vdev) +{ + int ret; + + /* Register the subdev and video node. */ + ret = v4l2_device_register_subdev(vdev, &ipipe->subdev); + if (ret < 0) + goto error; + + return 0; + +error: + omap4iss_ipipe_unregister_entities(ipipe); + return ret; +} + +/* ----------------------------------------------------------------------------- + * ISP IPIPE initialisation and cleanup + */ + +/* + * omap4iss_ipipe_init - IPIPE module initialization. + * @iss: Device pointer specific to the OMAP4 ISS. + * + * TODO: Get the initialisation values from platform data. + * + * Return 0 on success or a negative error code otherwise. + */ +int omap4iss_ipipe_init(struct iss_device *iss) +{ + struct iss_ipipe_device *ipipe = &iss->ipipe; + + ipipe->state = ISS_PIPELINE_STREAM_STOPPED; + init_waitqueue_head(&ipipe->wait); + + return ipipe_init_entities(ipipe); +} + +/* + * omap4iss_ipipe_cleanup - IPIPE module cleanup. + * @iss: Device pointer specific to the OMAP4 ISS. + */ +void omap4iss_ipipe_cleanup(struct iss_device *iss) +{ + /* FIXME: are you sure there's nothing to do? */ +} diff --git a/drivers/staging/media/omap4iss/iss_ipipe.h b/drivers/staging/media/omap4iss/iss_ipipe.h new file mode 100644 index 000000000000..c22d9041f2a5 --- /dev/null +++ b/drivers/staging/media/omap4iss/iss_ipipe.h @@ -0,0 +1,67 @@ +/* + * TI OMAP4 ISS V4L2 Driver - ISP IPIPE module + * + * Copyright (C) 2012 Texas Instruments, Inc. + * + * Author: Sergio Aguirre + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef OMAP4_ISS_IPIPE_H +#define OMAP4_ISS_IPIPE_H + +#include "iss_video.h" + +enum ipipe_input_entity { + IPIPE_INPUT_NONE, + IPIPE_INPUT_IPIPEIF, +}; + +#define IPIPE_OUTPUT_VP (1 << 0) + +/* Sink and source IPIPE pads */ +#define IPIPE_PAD_SINK 0 +#define IPIPE_PAD_SOURCE_VP 1 +#define IPIPE_PADS_NUM 2 + +/* + * struct iss_ipipe_device - Structure for the IPIPE module to store its own + * information + * @subdev: V4L2 subdevice + * @pads: Sink and source media entity pads + * @formats: Active video formats + * @input: Active input + * @output: Active outputs + * @error: A hardware error occurred during capture + * @state: Streaming state + * @wait: Wait queue used to stop the module + * @stopping: Stopping state + */ +struct iss_ipipe_device { + struct v4l2_subdev subdev; + struct media_pad pads[IPIPE_PADS_NUM]; + struct v4l2_mbus_framefmt formats[IPIPE_PADS_NUM]; + + enum ipipe_input_entity input; + unsigned int output; + unsigned int error; + + enum iss_pipeline_stream_state state; + wait_queue_head_t wait; + atomic_t stopping; +}; + +struct iss_device; + +int omap4iss_ipipe_register_entities(struct iss_ipipe_device *ipipe, + struct v4l2_device *vdev); +void omap4iss_ipipe_unregister_entities(struct iss_ipipe_device *ipipe); + +int omap4iss_ipipe_init(struct iss_device *iss); +void omap4iss_ipipe_cleanup(struct iss_device *iss); + +#endif /* OMAP4_ISS_IPIPE_H */ diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c new file mode 100644 index 000000000000..acc6005dfacf --- /dev/null +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c @@ -0,0 +1,847 @@ +/* + * TI OMAP4 ISS V4L2 Driver - ISP IPIPEIF module + * + * Copyright (C) 2012 Texas Instruments, Inc. + * + * Author: Sergio Aguirre + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "iss.h" +#include "iss_regs.h" +#include "iss_ipipeif.h" + +static struct v4l2_mbus_framefmt * +__ipipeif_get_format(struct iss_ipipeif_device *ipipeif, struct v4l2_subdev_fh *fh, + unsigned int pad, enum v4l2_subdev_format_whence which); + +static const unsigned int ipipeif_fmts[] = { + V4L2_MBUS_FMT_SGRBG10_1X10, + V4L2_MBUS_FMT_SRGGB10_1X10, + V4L2_MBUS_FMT_SBGGR10_1X10, + V4L2_MBUS_FMT_SGBRG10_1X10, + V4L2_MBUS_FMT_UYVY8_1X16, + V4L2_MBUS_FMT_YUYV8_1X16, +}; + +/* + * ipipeif_print_status - Print current IPIPEIF Module register values. + * @ipipeif: Pointer to ISS ISP IPIPEIF device. + * + * Also prints other debug information stored in the IPIPEIF module. + */ +#define IPIPEIF_PRINT_REGISTER(iss, name)\ + dev_dbg(iss->dev, "###IPIPEIF " #name "=0x%08x\n", \ + readl(iss->regs[OMAP4_ISS_MEM_ISP_IPIPEIF] + IPIPEIF_##name)) + +#define ISIF_PRINT_REGISTER(iss, name)\ + dev_dbg(iss->dev, "###ISIF " #name "=0x%08x\n", \ + readl(iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_##name)) + +#define ISP5_PRINT_REGISTER(iss, name)\ + dev_dbg(iss->dev, "###ISP5 " #name "=0x%08x\n", \ + readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_##name)) + +static void ipipeif_print_status(struct iss_ipipeif_device *ipipeif) +{ + struct iss_device *iss = to_iss_device(ipipeif); + + dev_dbg(iss->dev, "-------------IPIPEIF Register dump-------------\n"); + + IPIPEIF_PRINT_REGISTER(iss, CFG1); + IPIPEIF_PRINT_REGISTER(iss, CFG2); + + ISIF_PRINT_REGISTER(iss, SYNCEN); + ISIF_PRINT_REGISTER(iss, CADU); + ISIF_PRINT_REGISTER(iss, CADL); + ISIF_PRINT_REGISTER(iss, MODESET); + ISIF_PRINT_REGISTER(iss, CCOLP); + ISIF_PRINT_REGISTER(iss, SPH); + ISIF_PRINT_REGISTER(iss, LNH); + ISIF_PRINT_REGISTER(iss, LNV); + ISIF_PRINT_REGISTER(iss, VDINT0); + ISIF_PRINT_REGISTER(iss, HSIZE); + + ISP5_PRINT_REGISTER(iss, SYSCONFIG); + ISP5_PRINT_REGISTER(iss, CTRL); + ISP5_PRINT_REGISTER(iss, IRQSTATUS(0)); + ISP5_PRINT_REGISTER(iss, IRQENABLE_SET(0)); + ISP5_PRINT_REGISTER(iss, IRQENABLE_CLR(0)); + + dev_dbg(iss->dev, "-----------------------------------------------\n"); +} + +static void ipipeif_write_enable(struct iss_ipipeif_device *ipipeif, u8 enable) +{ + struct iss_device *iss = to_iss_device(ipipeif); + + writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_SYNCEN) & + ~ISIF_SYNCEN_DWEN) | + enable ? ISIF_SYNCEN_DWEN : 0, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_SYNCEN); +} + +/* + * ipipeif_enable - Enable/Disable IPIPEIF. + * @enable: enable flag + * + */ +static void ipipeif_enable(struct iss_ipipeif_device *ipipeif, u8 enable) +{ + struct iss_device *iss = to_iss_device(ipipeif); + + writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_SYNCEN) & + ~ISIF_SYNCEN_SYEN) | + enable ? ISIF_SYNCEN_SYEN : 0, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_SYNCEN); +} + +/* ----------------------------------------------------------------------------- + * Format- and pipeline-related configuration helpers + */ + +/* + * ipipeif_set_outaddr - Set memory address to save output image + * @ipipeif: Pointer to ISP IPIPEIF device. + * @addr: 32-bit memory address aligned on 32 byte boundary. + * + * Sets the memory address where the output will be saved. + */ +static void ipipeif_set_outaddr(struct iss_ipipeif_device *ipipeif, u32 addr) +{ + struct iss_device *iss = to_iss_device(ipipeif); + + /* Save address splitted in Base Address H & L */ + writel((addr >> (16 + 5)) & ISIF_CADU_MASK, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_CADU); + writel((addr >> 5) & ISIF_CADL_MASK, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_CADL); +} + +static void ipipeif_configure(struct iss_ipipeif_device *ipipeif) +{ + struct iss_device *iss = to_iss_device(ipipeif); + struct v4l2_mbus_framefmt *format; + u32 isif_ccolp = 0; + + omap4iss_configure_bridge(iss, ipipeif->input); + + /* IPIPEIF_PAD_SINK */ + format = &ipipeif->formats[IPIPEIF_PAD_SINK]; + + /* IPIPEIF with YUV422 input from ISIF */ + writel(readl(iss->regs[OMAP4_ISS_MEM_ISP_IPIPEIF] + IPIPEIF_CFG1) & + ~(IPIPEIF_CFG1_INPSRC1_MASK | IPIPEIF_CFG1_INPSRC2_MASK), + iss->regs[OMAP4_ISS_MEM_ISP_IPIPEIF] + IPIPEIF_CFG1); + + /* Select ISIF/IPIPEIF input format */ + switch (format->code) { + case V4L2_MBUS_FMT_UYVY8_1X16: + case V4L2_MBUS_FMT_YUYV8_1X16: + writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_MODESET) & + ~(ISIF_MODESET_CCDMD | + ISIF_MODESET_INPMOD_MASK | + ISIF_MODESET_CCDW_MASK)) | + ISIF_MODESET_INPMOD_YCBCR16, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_MODESET); + + writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_IPIPEIF] + IPIPEIF_CFG2) & + ~IPIPEIF_CFG2_YUV8) | + IPIPEIF_CFG2_YUV16, + iss->regs[OMAP4_ISS_MEM_ISP_IPIPEIF] + IPIPEIF_CFG2); + + break; + case V4L2_MBUS_FMT_SGRBG10_1X10: + isif_ccolp = ISIF_CCOLP_CP0_F0_GR | + ISIF_CCOLP_CP1_F0_R | + ISIF_CCOLP_CP2_F0_B | + ISIF_CCOLP_CP3_F0_GB; + goto cont_raw; + case V4L2_MBUS_FMT_SRGGB10_1X10: + isif_ccolp = ISIF_CCOLP_CP0_F0_R | + ISIF_CCOLP_CP1_F0_GR | + ISIF_CCOLP_CP2_F0_GB | + ISIF_CCOLP_CP3_F0_B; + goto cont_raw; + case V4L2_MBUS_FMT_SBGGR10_1X10: + isif_ccolp = ISIF_CCOLP_CP0_F0_B | + ISIF_CCOLP_CP1_F0_GB | + ISIF_CCOLP_CP2_F0_GR | + ISIF_CCOLP_CP3_F0_R; + goto cont_raw; + case V4L2_MBUS_FMT_SGBRG10_1X10: + isif_ccolp = ISIF_CCOLP_CP0_F0_GB | + ISIF_CCOLP_CP1_F0_B | + ISIF_CCOLP_CP2_F0_R | + ISIF_CCOLP_CP3_F0_GR; +cont_raw: + writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_IPIPEIF] + IPIPEIF_CFG2) & + ~IPIPEIF_CFG2_YUV16), + iss->regs[OMAP4_ISS_MEM_ISP_IPIPEIF] + IPIPEIF_CFG2); + + writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_MODESET) & + ~(ISIF_MODESET_CCDMD | + ISIF_MODESET_INPMOD_MASK | + ISIF_MODESET_CCDW_MASK)) | + ISIF_MODESET_INPMOD_RAW | ISIF_MODESET_CCDW_2BIT, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_MODESET); + + writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_CGAMMAWD) & + ~ISIF_CGAMMAWD_GWDI_MASK) | + ISIF_CGAMMAWD_GWDI_BIT11, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_CGAMMAWD); + + /* Set RAW Bayer pattern */ + writel(isif_ccolp, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_CCOLP); + break; + } + + writel(0 & ISIF_SPH_MASK, iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_SPH); + writel((format->width - 1) & ISIF_LNH_MASK, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_LNH); + writel((format->height - 1) & ISIF_LNV_MASK, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_LNV); + + /* Generate ISIF0 on the last line of the image */ + writel(format->height - 1, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_VDINT0); + + /* IPIPEIF_PAD_SOURCE_ISIF_SF */ + format = &ipipeif->formats[IPIPEIF_PAD_SOURCE_ISIF_SF]; + + writel((ipipeif->video_out.bpl_value >> 5) & ISIF_HSIZE_HSIZE_MASK, + iss->regs[OMAP4_ISS_MEM_ISP_ISIF] + ISIF_HSIZE); + + /* IPIPEIF_PAD_SOURCE_VP */ + /* Do nothing? */ + + omap4iss_isp_enable_interrupts(iss); +} + +/* ----------------------------------------------------------------------------- + * Interrupt handling + */ + +static void ipipeif_isr_buffer(struct iss_ipipeif_device *ipipeif) +{ + struct iss_buffer *buffer; + + ipipeif_write_enable(ipipeif, 0); + + buffer = omap4iss_video_buffer_next(&ipipeif->video_out); + if (buffer == NULL) + return; + + ipipeif_set_outaddr(ipipeif, buffer->iss_addr); + + ipipeif_write_enable(ipipeif, 1); +} + +/* + * ipipeif_isif0_isr - Handle ISIF0 event + * @ipipeif: Pointer to ISP IPIPEIF device. + * + * Executes LSC deferred enablement before next frame starts. + */ +static void ipipeif_isif0_isr(struct iss_ipipeif_device *ipipeif) +{ + struct iss_pipeline *pipe = + to_iss_pipeline(&ipipeif->subdev.entity); + if (pipe->do_propagation) + atomic_inc(&pipe->frame_number); + + if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY) + ipipeif_isr_buffer(ipipeif); +} + +/* + * omap4iss_ipipeif_isr - Configure ipipeif during interframe time. + * @ipipeif: Pointer to ISP IPIPEIF device. + * @events: IPIPEIF events + */ +void omap4iss_ipipeif_isr(struct iss_ipipeif_device *ipipeif, u32 events) +{ + if (omap4iss_module_sync_is_stopping(&ipipeif->wait, &ipipeif->stopping)) + return; + + if (events & ISP5_IRQ_ISIF0) + ipipeif_isif0_isr(ipipeif); +} + +/* ----------------------------------------------------------------------------- + * ISP video operations + */ + +static int ipipeif_video_queue(struct iss_video *video, struct iss_buffer *buffer) +{ + struct iss_ipipeif_device *ipipeif = container_of(video, + struct iss_ipipeif_device, video_out); + + if (!(ipipeif->output & IPIPEIF_OUTPUT_MEMORY)) + return -ENODEV; + + ipipeif_set_outaddr(ipipeif, buffer->iss_addr); + + /* + * If streaming was enabled before there was a buffer queued + * or underrun happened in the ISR, the hardware was not enabled + * and DMA queue flag ISS_VIDEO_DMAQUEUE_UNDERRUN is still set. + * Enable it now. + */ + if (video->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_UNDERRUN) { + if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY) + ipipeif_write_enable(ipipeif, 1); + ipipeif_enable(ipipeif, 1); + iss_video_dmaqueue_flags_clr(video); + } + + return 0; +} + +static const struct iss_video_operations ipipeif_video_ops = { + .queue = ipipeif_video_queue, +}; + +/* ----------------------------------------------------------------------------- + * V4L2 subdev operations + */ + +#define IPIPEIF_DRV_SUBCLK_MASK (OMAP4_ISS_ISP_SUBCLK_IPIPEIF |\ + OMAP4_ISS_ISP_SUBCLK_ISIF) +/* + * ipipeif_set_stream - Enable/Disable streaming on the IPIPEIF module + * @sd: ISP IPIPEIF V4L2 subdevice + * @enable: Enable/disable stream + */ +static int ipipeif_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); + struct iss_device *iss = to_iss_device(ipipeif); + struct iss_video *video_out = &ipipeif->video_out; + int ret = 0; + + if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED) { + if (enable == ISS_PIPELINE_STREAM_STOPPED) + return 0; + + omap4iss_isp_subclk_enable(iss, IPIPEIF_DRV_SUBCLK_MASK); + } + + switch (enable) { + case ISS_PIPELINE_STREAM_CONTINUOUS: + + ipipeif_configure(ipipeif); + ipipeif_print_status(ipipeif); + + /* + * When outputting to memory with no buffer available, let the + * buffer queue handler start the hardware. A DMA queue flag + * ISS_VIDEO_DMAQUEUE_QUEUED will be set as soon as there is + * a buffer available. + */ + if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY && + !(video_out->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_QUEUED)) + break; + + atomic_set(&ipipeif->stopping, 0); + if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY) + ipipeif_write_enable(ipipeif, 1); + ipipeif_enable(ipipeif, 1); + iss_video_dmaqueue_flags_clr(video_out); + break; + + case ISS_PIPELINE_STREAM_STOPPED: + if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED) + return 0; + if (omap4iss_module_sync_idle(&sd->entity, &ipipeif->wait, + &ipipeif->stopping)) + dev_dbg(iss->dev, "%s: module stop timeout.\n", + sd->name); + + if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY) + ipipeif_write_enable(ipipeif, 0); + ipipeif_enable(ipipeif, 0); + omap4iss_isp_disable_interrupts(iss); + omap4iss_isp_subclk_disable(iss, IPIPEIF_DRV_SUBCLK_MASK); + iss_video_dmaqueue_flags_clr(video_out); + break; + } + + ipipeif->state = enable; + return ret; +} + +static struct v4l2_mbus_framefmt * +__ipipeif_get_format(struct iss_ipipeif_device *ipipeif, struct v4l2_subdev_fh *fh, + unsigned int pad, enum v4l2_subdev_format_whence which) +{ + if (which == V4L2_SUBDEV_FORMAT_TRY) + return v4l2_subdev_get_try_format(fh, pad); + else + return &ipipeif->formats[pad]; +} + +/* + * ipipeif_try_format - Try video format on a pad + * @ipipeif: ISS IPIPEIF device + * @fh : V4L2 subdev file handle + * @pad: Pad number + * @fmt: Format + */ +static void +ipipeif_try_format(struct iss_ipipeif_device *ipipeif, struct v4l2_subdev_fh *fh, + unsigned int pad, struct v4l2_mbus_framefmt *fmt, + enum v4l2_subdev_format_whence which) +{ + struct v4l2_mbus_framefmt *format; + unsigned int width = fmt->width; + unsigned int height = fmt->height; + unsigned int i; + + switch (pad) { + case IPIPEIF_PAD_SINK: + /* TODO: If the IPIPEIF output formatter pad is connected directly + * to the resizer, only YUV formats can be used. + */ + for (i = 0; i < ARRAY_SIZE(ipipeif_fmts); i++) { + if (fmt->code == ipipeif_fmts[i]) + break; + } + + /* If not found, use SGRBG10 as default */ + if (i >= ARRAY_SIZE(ipipeif_fmts)) + fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10; + + /* Clamp the input size. */ + fmt->width = clamp_t(u32, width, 1, 8192); + fmt->height = clamp_t(u32, height, 1, 8192); + break; + + case IPIPEIF_PAD_SOURCE_ISIF_SF: + format = __ipipeif_get_format(ipipeif, fh, IPIPEIF_PAD_SINK, which); + memcpy(fmt, format, sizeof(*fmt)); + + /* The data formatter truncates the number of horizontal output + * pixels to a multiple of 16. To avoid clipping data, allow + * callers to request an output size bigger than the input size + * up to the nearest multiple of 16. + */ + fmt->width = clamp_t(u32, width, 32, (fmt->width + 15) & ~15); + fmt->width &= ~15; + fmt->height = clamp_t(u32, height, 32, fmt->height); + break; + + case IPIPEIF_PAD_SOURCE_VP: + format = __ipipeif_get_format(ipipeif, fh, IPIPEIF_PAD_SINK, which); + memcpy(fmt, format, sizeof(*fmt)); + + fmt->width = clamp_t(u32, width, 32, fmt->width); + fmt->height = clamp_t(u32, height, 32, fmt->height); + break; + } + + /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is + * stored on 2 bytes. + */ + fmt->colorspace = V4L2_COLORSPACE_SRGB; + fmt->field = V4L2_FIELD_NONE; +} + +/* + * ipipeif_enum_mbus_code - Handle pixel format enumeration + * @sd : pointer to v4l2 subdev structure + * @fh : V4L2 subdev file handle + * @code : pointer to v4l2_subdev_mbus_code_enum structure + * return -EINVAL or zero on success + */ +static int ipipeif_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + switch (code->pad) { + case IPIPEIF_PAD_SINK: + if (code->index >= ARRAY_SIZE(ipipeif_fmts)) + return -EINVAL; + + code->code = ipipeif_fmts[code->index]; + break; + + case IPIPEIF_PAD_SOURCE_ISIF_SF: + case IPIPEIF_PAD_SOURCE_VP: + /* No format conversion inside IPIPEIF */ + if (code->index != 0) + return -EINVAL; + + format = __ipipeif_get_format(ipipeif, fh, IPIPEIF_PAD_SINK, + V4L2_SUBDEV_FORMAT_TRY); + + code->code = format->code; + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int ipipeif_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh, + struct v4l2_subdev_frame_size_enum *fse) +{ + struct iss_ipipeif_device *ipipeif = 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; + ipipeif_try_format(ipipeif, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); + 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; + ipipeif_try_format(ipipeif, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); + fse->max_width = format.width; + fse->max_height = format.height; + + return 0; +} + +/* + * ipipeif_get_format - Retrieve the video format on a pad + * @sd : ISP IPIPEIF V4L2 subdevice + * @fh : V4L2 subdev file handle + * @fmt: Format + * + * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond + * to the format type. + */ +static int ipipeif_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) +{ + struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + format = __ipipeif_get_format(ipipeif, fh, fmt->pad, fmt->which); + if (format == NULL) + return -EINVAL; + + fmt->format = *format; + return 0; +} + +/* + * ipipeif_set_format - Set the video format on a pad + * @sd : ISP IPIPEIF V4L2 subdevice + * @fh : V4L2 subdev file handle + * @fmt: Format + * + * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond + * to the format type. + */ +static int ipipeif_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) +{ + struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); + struct v4l2_mbus_framefmt *format; + + format = __ipipeif_get_format(ipipeif, fh, fmt->pad, fmt->which); + if (format == NULL) + return -EINVAL; + + ipipeif_try_format(ipipeif, fh, fmt->pad, &fmt->format, fmt->which); + *format = fmt->format; + + /* Propagate the format from sink to source */ + if (fmt->pad == IPIPEIF_PAD_SINK) { + format = __ipipeif_get_format(ipipeif, fh, IPIPEIF_PAD_SOURCE_ISIF_SF, + fmt->which); + *format = fmt->format; + ipipeif_try_format(ipipeif, fh, IPIPEIF_PAD_SOURCE_ISIF_SF, format, + fmt->which); + + format = __ipipeif_get_format(ipipeif, fh, IPIPEIF_PAD_SOURCE_VP, + fmt->which); + *format = fmt->format; + ipipeif_try_format(ipipeif, fh, IPIPEIF_PAD_SOURCE_VP, format, + fmt->which); + } + + return 0; +} + +static int ipipeif_link_validate(struct v4l2_subdev *sd, struct media_link *link, + struct v4l2_subdev_format *source_fmt, + struct v4l2_subdev_format *sink_fmt) +{ + /* Check if the two ends match */ + if (source_fmt->format.width != sink_fmt->format.width || + source_fmt->format.height != sink_fmt->format.height) + return -EPIPE; + + if (source_fmt->format.code != sink_fmt->format.code) + return -EPIPE; + + return 0; +} + +/* + * ipipeif_init_formats - Initialize formats on all pads + * @sd: ISP IPIPEIF 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 ipipeif_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct v4l2_subdev_format format; + + memset(&format, 0, sizeof(format)); + format.pad = IPIPEIF_PAD_SINK; + format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; + format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10; + format.format.width = 4096; + format.format.height = 4096; + ipipeif_set_format(sd, fh, &format); + + return 0; +} + +/* V4L2 subdev video operations */ +static const struct v4l2_subdev_video_ops ipipeif_v4l2_video_ops = { + .s_stream = ipipeif_set_stream, +}; + +/* V4L2 subdev pad operations */ +static const struct v4l2_subdev_pad_ops ipipeif_v4l2_pad_ops = { + .enum_mbus_code = ipipeif_enum_mbus_code, + .enum_frame_size = ipipeif_enum_frame_size, + .get_fmt = ipipeif_get_format, + .set_fmt = ipipeif_set_format, + .link_validate = ipipeif_link_validate, +}; + +/* V4L2 subdev operations */ +static const struct v4l2_subdev_ops ipipeif_v4l2_ops = { + .video = &ipipeif_v4l2_video_ops, + .pad = &ipipeif_v4l2_pad_ops, +}; + +/* V4L2 subdev internal operations */ +static const struct v4l2_subdev_internal_ops ipipeif_v4l2_internal_ops = { + .open = ipipeif_init_formats, +}; + +/* ----------------------------------------------------------------------------- + * Media entity operations + */ + +/* + * ipipeif_link_setup - Setup IPIPEIF connections + * @entity: IPIPEIF media entity + * @local: Pad at the local end of the link + * @remote: Pad at the remote end of the link + * @flags: Link flags + * + * return -EINVAL or zero on success + */ +static int ipipeif_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 iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); + struct iss_device *iss = to_iss_device(ipipeif); + + switch (local->index | media_entity_type(remote->entity)) { + case IPIPEIF_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + /* Read from the sensor CSI2a or CSI2b. */ + if (!(flags & MEDIA_LNK_FL_ENABLED)) { + ipipeif->input = IPIPEIF_INPUT_NONE; + break; + } + + if (ipipeif->input != IPIPEIF_INPUT_NONE) + return -EBUSY; + + if (remote->entity == &iss->csi2a.subdev.entity) + ipipeif->input = IPIPEIF_INPUT_CSI2A; + else if (remote->entity == &iss->csi2b.subdev.entity) + ipipeif->input = IPIPEIF_INPUT_CSI2B; + + break; + + case IPIPEIF_PAD_SOURCE_ISIF_SF | MEDIA_ENT_T_DEVNODE: + /* Write to memory */ + if (flags & MEDIA_LNK_FL_ENABLED) { + if (ipipeif->output & ~IPIPEIF_OUTPUT_MEMORY) + return -EBUSY; + ipipeif->output |= IPIPEIF_OUTPUT_MEMORY; + } else { + ipipeif->output &= ~IPIPEIF_OUTPUT_MEMORY; + } + break; + + case IPIPEIF_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV: + /* Send to IPIPE/RESIZER */ + if (flags & MEDIA_LNK_FL_ENABLED) { + if (ipipeif->output & ~IPIPEIF_OUTPUT_VP) + return -EBUSY; + ipipeif->output |= IPIPEIF_OUTPUT_VP; + } else { + ipipeif->output &= ~IPIPEIF_OUTPUT_VP; + } + break; + + default: + return -EINVAL; + } + + return 0; +} + +/* media operations */ +static const struct media_entity_operations ipipeif_media_ops = { + .link_setup = ipipeif_link_setup, + .link_validate = v4l2_subdev_link_validate, +}; + +/* + * ipipeif_init_entities - Initialize V4L2 subdev and media entity + * @ipipeif: ISS ISP IPIPEIF module + * + * Return 0 on success and a negative error code on failure. + */ +static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif) +{ + struct v4l2_subdev *sd = &ipipeif->subdev; + struct media_pad *pads = ipipeif->pads; + struct media_entity *me = &sd->entity; + int ret; + + ipipeif->input = IPIPEIF_INPUT_NONE; + + v4l2_subdev_init(sd, &ipipeif_v4l2_ops); + sd->internal_ops = &ipipeif_v4l2_internal_ops; + strlcpy(sd->name, "OMAP4 ISS ISP IPIPEIF", sizeof(sd->name)); + sd->grp_id = 1 << 16; /* group ID for iss subdevs */ + v4l2_set_subdevdata(sd, ipipeif); + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + + pads[IPIPEIF_PAD_SINK].flags = MEDIA_PAD_FL_SINK; + pads[IPIPEIF_PAD_SOURCE_ISIF_SF].flags = MEDIA_PAD_FL_SOURCE; + pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; + + me->ops = &ipipeif_media_ops; + ret = media_entity_init(me, IPIPEIF_PADS_NUM, pads, 0); + if (ret < 0) + return ret; + + ipipeif_init_formats(sd, NULL); + + ipipeif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + ipipeif->video_out.ops = &ipipeif_video_ops; + ipipeif->video_out.iss = to_iss_device(ipipeif); + ipipeif->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3; + ipipeif->video_out.bpl_alignment = 32; + ipipeif->video_out.bpl_zero_padding = 1; + ipipeif->video_out.bpl_max = 0x1ffe0; + + ret = omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF"); + if (ret < 0) + return ret; + + /* Connect the IPIPEIF subdev to the video node. */ + ret = media_entity_create_link(&ipipeif->subdev.entity, IPIPEIF_PAD_SOURCE_ISIF_SF, + &ipipeif->video_out.video.entity, 0, 0); + if (ret < 0) + return ret; + + return 0; +} + +void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif) +{ + media_entity_cleanup(&ipipeif->subdev.entity); + + v4l2_device_unregister_subdev(&ipipeif->subdev); + omap4iss_video_unregister(&ipipeif->video_out); +} + +int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif, + struct v4l2_device *vdev) +{ + int ret; + + /* Register the subdev and video node. */ + ret = v4l2_device_register_subdev(vdev, &ipipeif->subdev); + if (ret < 0) + goto error; + + ret = omap4iss_video_register(&ipipeif->video_out, vdev); + if (ret < 0) + goto error; + + return 0; + +error: + omap4iss_ipipeif_unregister_entities(ipipeif); + return ret; +} + +/* ----------------------------------------------------------------------------- + * ISP IPIPEIF initialisation and cleanup + */ + +/* + * omap4iss_ipipeif_init - IPIPEIF module initialization. + * @iss: Device pointer specific to the OMAP4 ISS. + * + * TODO: Get the initialisation values from platform data. + * + * Return 0 on success or a negative error code otherwise. + */ +int omap4iss_ipipeif_init(struct iss_device *iss) +{ + struct iss_ipipeif_device *ipipeif = &iss->ipipeif; + + ipipeif->state = ISS_PIPELINE_STREAM_STOPPED; + init_waitqueue_head(&ipipeif->wait); + + return ipipeif_init_entities(ipipeif); +} + +/* + * omap4iss_ipipeif_cleanup - IPIPEIF module cleanup. + * @iss: Device pointer specific to the OMAP4 ISS. + */ +void omap4iss_ipipeif_cleanup(struct iss_device *iss) +{ + /* FIXME: are you sure there's nothing to do? */ +} diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.h b/drivers/staging/media/omap4iss/iss_ipipeif.h new file mode 100644 index 000000000000..cbdccb982eee --- /dev/null +++ b/drivers/staging/media/omap4iss/iss_ipipeif.h @@ -0,0 +1,92 @@ +/* + * TI OMAP4 ISS V4L2 Driver - ISP IPIPEIF module + * + * Copyright (C) 2012 Texas Instruments, Inc. + * + * Author: Sergio Aguirre + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef OMAP4_ISS_IPIPEIF_H +#define OMAP4_ISS_IPIPEIF_H + +#include "iss_video.h" + +enum ipipeif_input_entity { + IPIPEIF_INPUT_NONE, + IPIPEIF_INPUT_CSI2A, + IPIPEIF_INPUT_CSI2B +}; + +#define IPIPEIF_OUTPUT_MEMORY (1 << 0) +#define IPIPEIF_OUTPUT_VP (1 << 1) + +/* Sink and source IPIPEIF pads */ +#define IPIPEIF_PAD_SINK 0 +#define IPIPEIF_PAD_SOURCE_ISIF_SF 1 +#define IPIPEIF_PAD_SOURCE_VP 2 +#define IPIPEIF_PADS_NUM 3 + +/* + * struct iss_ipipeif_device - Structure for the IPIPEIF module to store its own + * information + * @subdev: V4L2 subdevice + * @pads: Sink and source media entity pads + * @formats: Active video formats + * @input: Active input + * @output: Active outputs + * @video_out: Output video node + * @error: A hardware error occurred during capture + * @alaw: A-law compression enabled (1) or disabled (0) + * @lpf: Low pass filter enabled (1) or disabled (0) + * @obclamp: Optical-black clamp enabled (1) or disabled (0) + * @fpc_en: Faulty pixels correction enabled (1) or disabled (0) + * @blcomp: Black level compensation configuration + * @clamp: Optical-black or digital clamp configuration + * @fpc: Faulty pixels correction configuration + * @lsc: Lens shading compensation configuration + * @update: Bitmask of controls to update during the next interrupt + * @shadow_update: Controls update in progress by userspace + * @syncif: Interface synchronization configuration + * @vpcfg: Video port configuration + * @underrun: A buffer underrun occurred and a new buffer has been queued + * @state: Streaming state + * @lock: Serializes shadow_update with interrupt handler + * @wait: Wait queue used to stop the module + * @stopping: Stopping state + * @ioctl_lock: Serializes ioctl calls and LSC requests freeing + */ +struct iss_ipipeif_device { + struct v4l2_subdev subdev; + struct media_pad pads[IPIPEIF_PADS_NUM]; + struct v4l2_mbus_framefmt formats[IPIPEIF_PADS_NUM]; + + enum ipipeif_input_entity input; + unsigned int output; + struct iss_video video_out; + unsigned int error; + + enum iss_pipeline_stream_state state; + wait_queue_head_t wait; + atomic_t stopping; +}; + +struct iss_device; + +int omap4iss_ipipeif_init(struct iss_device *iss); +void omap4iss_ipipeif_cleanup(struct iss_device *iss); +int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif, + struct v4l2_device *vdev); +void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif); + +int omap4iss_ipipeif_busy(struct iss_ipipeif_device *ipipeif); +void omap4iss_ipipeif_isr(struct iss_ipipeif_device *ipipeif, u32 events); +void omap4iss_ipipeif_restore_context(struct iss_device *iss); +void omap4iss_ipipeif_max_rate(struct iss_ipipeif_device *ipipeif, + unsigned int *max_rate); + +#endif /* OMAP4_ISS_IPIPEIF_H */