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linux-next/drivers/media/platform/omap3isp/isp.h
Laurent Pinchart 112eee0c03 [media] omap3isp: Refactor modules stop failure handling 
Modules failing to stop are fatal errors for the preview engine only.
Flag that condition separately from the other stop failures to prepare
support for more fatal errors.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-01-07 08:09:15 -02:00

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/*
* isp.h
*
* TI OMAP3 ISP - Core
*
* Copyright (C) 2009-2010 Nokia Corporation
* Copyright (C) 2009 Texas Instruments, Inc.
*
* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
* Sakari Ailus <sakari.ailus@iki.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef OMAP3_ISP_CORE_H
#define OMAP3_ISP_CORE_H
#include <media/omap3isp.h>
#include <media/v4l2-device.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/iommu.h>
#include <linux/platform_device.h>
#include <linux/wait.h>
#include "ispstat.h"
#include "ispccdc.h"
#include "ispreg.h"
#include "ispresizer.h"
#include "isppreview.h"
#include "ispcsiphy.h"
#include "ispcsi2.h"
#include "ispccp2.h"
#define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8)
#define ISP_TOK_TERM 0xFFFFFFFF /*
* terminating token for ISP
* modules reg list
*/
#define to_isp_device(ptr_module) \
container_of(ptr_module, struct isp_device, isp_##ptr_module)
#define to_device(ptr_module) \
(to_isp_device(ptr_module)->dev)
enum isp_mem_resources {
OMAP3_ISP_IOMEM_MAIN,
OMAP3_ISP_IOMEM_CCP2,
OMAP3_ISP_IOMEM_CCDC,
OMAP3_ISP_IOMEM_HIST,
OMAP3_ISP_IOMEM_H3A,
OMAP3_ISP_IOMEM_PREV,
OMAP3_ISP_IOMEM_RESZ,
OMAP3_ISP_IOMEM_SBL,
OMAP3_ISP_IOMEM_CSI2A_REGS1,
OMAP3_ISP_IOMEM_CSIPHY2,
OMAP3_ISP_IOMEM_CSI2A_REGS2,
OMAP3_ISP_IOMEM_CSI2C_REGS1,
OMAP3_ISP_IOMEM_CSIPHY1,
OMAP3_ISP_IOMEM_CSI2C_REGS2,
OMAP3_ISP_IOMEM_343X_CONTROL_CSIRXFE,
OMAP3_ISP_IOMEM_3630_CONTROL_CAMERA_PHY_CTRL,
OMAP3_ISP_IOMEM_LAST
};
enum isp_sbl_resource {
OMAP3_ISP_SBL_CSI1_READ = 0x1,
OMAP3_ISP_SBL_CSI1_WRITE = 0x2,
OMAP3_ISP_SBL_CSI2A_WRITE = 0x4,
OMAP3_ISP_SBL_CSI2C_WRITE = 0x8,
OMAP3_ISP_SBL_CCDC_LSC_READ = 0x10,
OMAP3_ISP_SBL_CCDC_WRITE = 0x20,
OMAP3_ISP_SBL_PREVIEW_READ = 0x40,
OMAP3_ISP_SBL_PREVIEW_WRITE = 0x80,
OMAP3_ISP_SBL_RESIZER_READ = 0x100,
OMAP3_ISP_SBL_RESIZER_WRITE = 0x200,
};
enum isp_subclk_resource {
OMAP3_ISP_SUBCLK_CCDC = (1 << 0),
OMAP3_ISP_SUBCLK_AEWB = (1 << 1),
OMAP3_ISP_SUBCLK_AF = (1 << 2),
OMAP3_ISP_SUBCLK_HIST = (1 << 3),
OMAP3_ISP_SUBCLK_PREVIEW = (1 << 4),
OMAP3_ISP_SUBCLK_RESIZER = (1 << 5),
};
/* ISP: OMAP 34xx ES 1.0 */
#define ISP_REVISION_1_0 0x10
/* ISP2: OMAP 34xx ES 2.0, 2.1 and 3.0 */
#define ISP_REVISION_2_0 0x20
/* ISP2P: OMAP 36xx */
#define ISP_REVISION_15_0 0xF0
/*
* struct isp_res_mapping - Map ISP io resources to ISP revision.
* @isp_rev: ISP_REVISION_x_x
* @map: bitmap for enum isp_mem_resources
*/
struct isp_res_mapping {
u32 isp_rev;
u32 map;
};
/*
* struct isp_reg - Structure for ISP register values.
* @reg: 32-bit Register address.
* @val: 32-bit Register value.
*/
struct isp_reg {
enum isp_mem_resources mmio_range;
u32 reg;
u32 val;
};
enum isp_xclk_id {
ISP_XCLK_A,
ISP_XCLK_B,
};
struct isp_xclk {
struct isp_device *isp;
struct clk_hw hw;
struct clk_lookup *lookup;
struct clk *clk;
enum isp_xclk_id id;
spinlock_t lock; /* Protects enabled and divider */
bool enabled;
unsigned int divider;
};
/*
* struct isp_device - ISP device structure.
* @dev: Device pointer specific to the OMAP3 ISP.
* @revision: Stores current ISP module revision.
* @irq_num: Currently used IRQ number.
* @mmio_base: Array with kernel base addresses for ioremapped ISP register
* regions.
* @mmio_base_phys: Array with physical L4 bus addresses for ISP register
* regions.
* @stat_lock: Spinlock for handling statistics
* @isp_mutex: Mutex for serializing requests to ISP.
* @stop_failure: Indicates that an entity failed to stop.
* @crashed: Bitmask of crashed entities (indexed by entity ID)
* @has_context: Context has been saved at least once and can be restored.
* @ref_count: Reference count for handling multiple ISP requests.
* @cam_ick: Pointer to camera interface clock structure.
* @cam_mclk: Pointer to camera functional clock structure.
* @csi2_fck: Pointer to camera CSI2 complexIO clock structure.
* @l3_ick: Pointer to OMAP3 L3 bus interface clock.
* @xclks: External clocks provided by the ISP
* @irq: Currently attached ISP ISR callbacks information structure.
* @isp_af: Pointer to current settings for ISP AutoFocus SCM.
* @isp_hist: Pointer to current settings for ISP Histogram SCM.
* @isp_h3a: Pointer to current settings for ISP Auto Exposure and
* White Balance SCM.
* @isp_res: Pointer to current settings for ISP Resizer.
* @isp_prev: Pointer to current settings for ISP Preview.
* @isp_ccdc: Pointer to current settings for ISP CCDC.
* @iommu: Pointer to requested IOMMU instance for ISP.
* @platform_cb: ISP driver callback function pointers for platform code
*
* This structure is used to store the OMAP ISP Information.
*/
struct isp_device {
struct v4l2_device v4l2_dev;
struct media_device media_dev;
struct device *dev;
u32 revision;
/* platform HW resources */
struct isp_platform_data *pdata;
unsigned int irq_num;
void __iomem *mmio_base[OMAP3_ISP_IOMEM_LAST];
unsigned long mmio_base_phys[OMAP3_ISP_IOMEM_LAST];
/* ISP Obj */
spinlock_t stat_lock; /* common lock for statistic drivers */
struct mutex isp_mutex; /* For handling ref_count field */
bool stop_failure;
u32 crashed;
int has_context;
int ref_count;
unsigned int autoidle;
#define ISP_CLK_CAM_ICK 0
#define ISP_CLK_CAM_MCLK 1
#define ISP_CLK_CSI2_FCK 2
#define ISP_CLK_L3_ICK 3
struct clk *clock[4];
struct isp_xclk xclks[2];
/* ISP modules */
struct ispstat isp_af;
struct ispstat isp_aewb;
struct ispstat isp_hist;
struct isp_res_device isp_res;
struct isp_prev_device isp_prev;
struct isp_ccdc_device isp_ccdc;
struct isp_csi2_device isp_csi2a;
struct isp_csi2_device isp_csi2c;
struct isp_ccp2_device isp_ccp2;
struct isp_csiphy isp_csiphy1;
struct isp_csiphy isp_csiphy2;
unsigned int sbl_resources;
unsigned int subclk_resources;
struct iommu_domain *domain;
};
#define v4l2_dev_to_isp_device(dev) \
container_of(dev, struct isp_device, v4l2_dev)
void omap3isp_hist_dma_done(struct isp_device *isp);
void omap3isp_flush(struct isp_device *isp);
int omap3isp_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait,
atomic_t *stopping);
int omap3isp_module_sync_is_stopping(wait_queue_head_t *wait,
atomic_t *stopping);
int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
enum isp_pipeline_stream_state state);
void omap3isp_pipeline_cancel_stream(struct isp_pipeline *pipe);
void omap3isp_configure_bridge(struct isp_device *isp,
enum ccdc_input_entity input,
const struct isp_parallel_platform_data *pdata,
unsigned int shift, unsigned int bridge);
struct isp_device *omap3isp_get(struct isp_device *isp);
void omap3isp_put(struct isp_device *isp);
void omap3isp_print_status(struct isp_device *isp);
void omap3isp_sbl_enable(struct isp_device *isp, enum isp_sbl_resource res);
void omap3isp_sbl_disable(struct isp_device *isp, enum isp_sbl_resource res);
void omap3isp_subclk_enable(struct isp_device *isp,
enum isp_subclk_resource res);
void omap3isp_subclk_disable(struct isp_device *isp,
enum isp_subclk_resource res);
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use);
int omap3isp_register_entities(struct platform_device *pdev,
struct v4l2_device *v4l2_dev);
void omap3isp_unregister_entities(struct platform_device *pdev);
/*
* isp_reg_readl - Read value of an OMAP3 ISP register
* @dev: Device pointer specific to the OMAP3 ISP.
* @isp_mmio_range: Range to which the register offset refers to.
* @reg_offset: Register offset to read from.
*
* Returns an unsigned 32 bit value with the required register contents.
*/
static inline
u32 isp_reg_readl(struct isp_device *isp, enum isp_mem_resources isp_mmio_range,
u32 reg_offset)
{
return __raw_readl(isp->mmio_base[isp_mmio_range] + reg_offset);
}
/*
* isp_reg_writel - Write value to an OMAP3 ISP register
* @dev: Device pointer specific to the OMAP3 ISP.
* @reg_value: 32 bit value to write to the register.
* @isp_mmio_range: Range to which the register offset refers to.
* @reg_offset: Register offset to write into.
*/
static inline
void isp_reg_writel(struct isp_device *isp, u32 reg_value,
enum isp_mem_resources isp_mmio_range, u32 reg_offset)
{
__raw_writel(reg_value, isp->mmio_base[isp_mmio_range] + reg_offset);
}
/*
* isp_reg_and - Clear individual bits in an OMAP3 ISP register
* @dev: Device pointer specific to the OMAP3 ISP.
* @mmio_range: Range to which the register offset refers to.
* @reg: Register offset to work on.
* @clr_bits: 32 bit value which would be cleared in the register.
*/
static inline
void isp_reg_clr(struct isp_device *isp, enum isp_mem_resources mmio_range,
u32 reg, u32 clr_bits)
{
u32 v = isp_reg_readl(isp, mmio_range, reg);
isp_reg_writel(isp, v & ~clr_bits, mmio_range, reg);
}
/*
* isp_reg_set - Set individual bits in an OMAP3 ISP register
* @dev: Device pointer specific to the OMAP3 ISP.
* @mmio_range: Range to which the register offset refers to.
* @reg: Register offset to work on.
* @set_bits: 32 bit value which would be set in the register.
*/
static inline
void isp_reg_set(struct isp_device *isp, enum isp_mem_resources mmio_range,
u32 reg, u32 set_bits)
{
u32 v = isp_reg_readl(isp, mmio_range, reg);
isp_reg_writel(isp, v | set_bits, mmio_range, reg);
}
/*
* isp_reg_clr_set - Clear and set invidial bits in an OMAP3 ISP register
* @dev: Device pointer specific to the OMAP3 ISP.
* @mmio_range: Range to which the register offset refers to.
* @reg: Register offset to work on.
* @clr_bits: 32 bit value which would be cleared in the register.
* @set_bits: 32 bit value which would be set in the register.
*
* The clear operation is done first, and then the set operation.
*/
static inline
void isp_reg_clr_set(struct isp_device *isp, enum isp_mem_resources mmio_range,
u32 reg, u32 clr_bits, u32 set_bits)
{
u32 v = isp_reg_readl(isp, mmio_range, reg);
isp_reg_writel(isp, (v & ~clr_bits) | set_bits, mmio_range, reg);
}
static inline enum v4l2_buf_type
isp_pad_buffer_type(const struct v4l2_subdev *subdev, int pad)
{
if (pad >= subdev->entity.num_pads)
return 0;
if (subdev->entity.pads[pad].flags & MEDIA_PAD_FL_SINK)
return V4L2_BUF_TYPE_VIDEO_OUTPUT;
else
return V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
#endif /* OMAP3_ISP_CORE_H */
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