1 /* 2 * ispstat.h 3 * 4 * TI OMAP3 ISP - Statistics core 5 * 6 * Copyright (C) 2010 Nokia Corporation 7 * Copyright (C) 2009 Texas Instruments, Inc 8 * 9 * Contacts: David Cohen <dacohen@gmail.com> 10 * Laurent Pinchart <laurent.pinchart@ideasonboard.com> 11 * Sakari Ailus <sakari.ailus@iki.fi> 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License version 2 as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 25 * 02110-1301 USA 26 */ 27 28 #ifndef OMAP3_ISP_STAT_H 29 #define OMAP3_ISP_STAT_H 30 31 #include <linux/types.h> 32 #include <linux/omap3isp.h> 33 #include <plat/dma.h> 34 #include <media/v4l2-event.h> 35 36 #include "isp.h" 37 #include "ispvideo.h" 38 39 #define STAT_MAX_BUFS 5 40 #define STAT_NEVENTS 8 41 42 #define STAT_BUF_DONE 0 /* Buffer is ready */ 43 #define STAT_NO_BUF 1 /* An error has occurred */ 44 #define STAT_BUF_WAITING_DMA 2 /* Histogram only: DMA is running */ 45 46 struct ispstat; 47 48 struct ispstat_buffer { 49 unsigned long iommu_addr; 50 struct iovm_struct *iovm; 51 void *virt_addr; 52 dma_addr_t dma_addr; 53 struct timeval ts; 54 u32 buf_size; 55 u32 frame_number; 56 u16 config_counter; 57 u8 empty; 58 }; 59 60 struct ispstat_ops { 61 /* 62 * Validate new params configuration. 63 * new_conf->buf_size value must be changed to the exact buffer size 64 * necessary for the new configuration if it's smaller. 65 */ 66 int (*validate_params)(struct ispstat *stat, void *new_conf); 67 68 /* 69 * Save new params configuration. 70 * stat->priv->buf_size value must be set to the exact buffer size for 71 * the new configuration. 72 * stat->update is set to 1 if new configuration is different than 73 * current one. 74 */ 75 void (*set_params)(struct ispstat *stat, void *new_conf); 76 77 /* Apply stored configuration. */ 78 void (*setup_regs)(struct ispstat *stat, void *priv); 79 80 /* Enable/Disable module. */ 81 void (*enable)(struct ispstat *stat, int enable); 82 83 /* Verify is module is busy. */ 84 int (*busy)(struct ispstat *stat); 85 86 /* Used for specific operations during generic buf process task. */ 87 int (*buf_process)(struct ispstat *stat); 88 }; 89 90 enum ispstat_state_t { 91 ISPSTAT_DISABLED = 0, 92 ISPSTAT_DISABLING, 93 ISPSTAT_ENABLED, 94 ISPSTAT_ENABLING, 95 ISPSTAT_SUSPENDED, 96 }; 97 98 struct ispstat { 99 struct v4l2_subdev subdev; 100 struct media_pad pad; /* sink pad */ 101 102 /* Control */ 103 unsigned configured:1; 104 unsigned update:1; 105 unsigned buf_processing:1; 106 unsigned sbl_ovl_recover:1; 107 u8 inc_config; 108 atomic_t buf_err; 109 enum ispstat_state_t state; /* enabling/disabling state */ 110 struct omap_dma_channel_params dma_config; 111 struct isp_device *isp; 112 void *priv; /* pointer to priv config struct */ 113 void *recover_priv; /* pointer to recover priv configuration */ 114 struct mutex ioctl_lock; /* serialize private ioctl */ 115 116 const struct ispstat_ops *ops; 117 118 /* Buffer */ 119 u8 wait_acc_frames; 120 u16 config_counter; 121 u32 frame_number; 122 u32 buf_size; 123 u32 buf_alloc_size; 124 int dma_ch; 125 unsigned long event_type; 126 struct ispstat_buffer *buf; 127 struct ispstat_buffer *active_buf; 128 struct ispstat_buffer *locked_buf; 129 }; 130 131 struct ispstat_generic_config { 132 /* 133 * Fields must be in the same order as in: 134 * - omap3isp_h3a_aewb_config 135 * - omap3isp_h3a_af_config 136 * - omap3isp_hist_config 137 */ 138 u32 buf_size; 139 u16 config_counter; 140 }; 141 142 int omap3isp_stat_config(struct ispstat *stat, void *new_conf); 143 int omap3isp_stat_request_statistics(struct ispstat *stat, 144 struct omap3isp_stat_data *data); 145 int omap3isp_stat_init(struct ispstat *stat, const char *name, 146 const struct v4l2_subdev_ops *sd_ops); 147 void omap3isp_stat_cleanup(struct ispstat *stat); 148 int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev, 149 struct v4l2_fh *fh, 150 struct v4l2_event_subscription *sub); 151 int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev, 152 struct v4l2_fh *fh, 153 struct v4l2_event_subscription *sub); 154 int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable); 155 156 int omap3isp_stat_busy(struct ispstat *stat); 157 int omap3isp_stat_pcr_busy(struct ispstat *stat); 158 void omap3isp_stat_suspend(struct ispstat *stat); 159 void omap3isp_stat_resume(struct ispstat *stat); 160 int omap3isp_stat_enable(struct ispstat *stat, u8 enable); 161 void omap3isp_stat_sbl_overflow(struct ispstat *stat); 162 void omap3isp_stat_isr(struct ispstat *stat); 163 void omap3isp_stat_isr_frame_sync(struct ispstat *stat); 164 void omap3isp_stat_dma_isr(struct ispstat *stat); 165 int omap3isp_stat_register_entities(struct ispstat *stat, 166 struct v4l2_device *vdev); 167 void omap3isp_stat_unregister_entities(struct ispstat *stat); 168 169 #endif /* OMAP3_ISP_STAT_H */ 170