linux/drivers/media/platform/exynos4-is/fimc-is-regs.c
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   1/*
   2 * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
   3 *
   4 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
   5 *
   6 * Authors: Younghwan Joo <yhwan.joo@samsung.com>
   7 *          Sylwester Nawrocki <s.nawrocki@samsung.com>
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License version 2 as
  11 * published by the Free Software Foundation.
  12 */
  13#include <linux/delay.h>
  14
  15#include "fimc-is.h"
  16#include "fimc-is-command.h"
  17#include "fimc-is-regs.h"
  18#include "fimc-is-sensor.h"
  19
  20void fimc_is_fw_clear_irq1(struct fimc_is *is, unsigned int nr)
  21{
  22        mcuctl_write(1UL << nr, is, MCUCTL_REG_INTCR1);
  23}
  24
  25void fimc_is_fw_clear_irq2(struct fimc_is *is)
  26{
  27        u32 cfg = mcuctl_read(is, MCUCTL_REG_INTSR2);
  28        mcuctl_write(cfg, is, MCUCTL_REG_INTCR2);
  29}
  30
  31void fimc_is_hw_set_intgr0_gd0(struct fimc_is *is)
  32{
  33        mcuctl_write(INTGR0_INTGD(0), is, MCUCTL_REG_INTGR0);
  34}
  35
  36int fimc_is_hw_wait_intsr0_intsd0(struct fimc_is *is)
  37{
  38        unsigned int timeout = 2000;
  39        u32 cfg, status;
  40
  41        cfg = mcuctl_read(is, MCUCTL_REG_INTSR0);
  42        status = INTSR0_GET_INTSD(0, cfg);
  43
  44        while (status) {
  45                cfg = mcuctl_read(is, MCUCTL_REG_INTSR0);
  46                status = INTSR0_GET_INTSD(0, cfg);
  47                if (timeout == 0) {
  48                        dev_warn(&is->pdev->dev, "%s timeout\n",
  49                                 __func__);
  50                        return -ETIME;
  51                }
  52                timeout--;
  53                udelay(1);
  54        }
  55        return 0;
  56}
  57
  58int fimc_is_hw_wait_intmsr0_intmsd0(struct fimc_is *is)
  59{
  60        unsigned int timeout = 2000;
  61        u32 cfg, status;
  62
  63        cfg = mcuctl_read(is, MCUCTL_REG_INTMSR0);
  64        status = INTMSR0_GET_INTMSD(0, cfg);
  65
  66        while (status) {
  67                cfg = mcuctl_read(is, MCUCTL_REG_INTMSR0);
  68                status = INTMSR0_GET_INTMSD(0, cfg);
  69                if (timeout == 0) {
  70                        dev_warn(&is->pdev->dev, "%s timeout\n",
  71                                 __func__);
  72                        return -ETIME;
  73                }
  74                timeout--;
  75                udelay(1);
  76        }
  77        return 0;
  78}
  79
  80int fimc_is_hw_set_param(struct fimc_is *is)
  81{
  82        struct chain_config *config = &is->config[is->config_index];
  83        unsigned int param_count = __get_pending_param_count(is);
  84
  85        fimc_is_hw_wait_intmsr0_intmsd0(is);
  86
  87        mcuctl_write(HIC_SET_PARAMETER, is, MCUCTL_REG_ISSR(0));
  88        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
  89        mcuctl_write(is->config_index, is, MCUCTL_REG_ISSR(2));
  90
  91        mcuctl_write(param_count, is, MCUCTL_REG_ISSR(3));
  92        mcuctl_write(config->p_region_index1, is, MCUCTL_REG_ISSR(4));
  93        mcuctl_write(config->p_region_index2, is, MCUCTL_REG_ISSR(5));
  94
  95        fimc_is_hw_set_intgr0_gd0(is);
  96        return 0;
  97}
  98
  99int fimc_is_hw_set_tune(struct fimc_is *is)
 100{
 101        fimc_is_hw_wait_intmsr0_intmsd0(is);
 102
 103        mcuctl_write(HIC_SET_TUNE, is, MCUCTL_REG_ISSR(0));
 104        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 105        mcuctl_write(is->h2i_cmd.entry_id, is, MCUCTL_REG_ISSR(2));
 106
 107        fimc_is_hw_set_intgr0_gd0(is);
 108        return 0;
 109}
 110
 111#define FIMC_IS_MAX_PARAMS      4
 112
 113int fimc_is_hw_get_params(struct fimc_is *is, unsigned int num_args)
 114{
 115        int i;
 116
 117        if (num_args > FIMC_IS_MAX_PARAMS)
 118                return -EINVAL;
 119
 120        is->i2h_cmd.num_args = num_args;
 121
 122        for (i = 0; i < FIMC_IS_MAX_PARAMS; i++) {
 123                if (i < num_args)
 124                        is->i2h_cmd.args[i] = mcuctl_read(is,
 125                                        MCUCTL_REG_ISSR(12 + i));
 126                else
 127                        is->i2h_cmd.args[i] = 0;
 128        }
 129        return 0;
 130}
 131
 132void fimc_is_hw_set_sensor_num(struct fimc_is *is)
 133{
 134        pr_debug("setting sensor index to: %d\n", is->sensor_index);
 135
 136        mcuctl_write(IH_REPLY_DONE, is, MCUCTL_REG_ISSR(0));
 137        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 138        mcuctl_write(IHC_GET_SENSOR_NUM, is, MCUCTL_REG_ISSR(2));
 139        mcuctl_write(FIMC_IS_SENSOR_NUM, is, MCUCTL_REG_ISSR(3));
 140}
 141
 142void fimc_is_hw_close_sensor(struct fimc_is *is, unsigned int index)
 143{
 144        if (is->sensor_index != index)
 145                return;
 146
 147        fimc_is_hw_wait_intmsr0_intmsd0(is);
 148        mcuctl_write(HIC_CLOSE_SENSOR, is, MCUCTL_REG_ISSR(0));
 149        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 150        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(2));
 151        fimc_is_hw_set_intgr0_gd0(is);
 152}
 153
 154void fimc_is_hw_get_setfile_addr(struct fimc_is *is)
 155{
 156        fimc_is_hw_wait_intmsr0_intmsd0(is);
 157        mcuctl_write(HIC_GET_SET_FILE_ADDR, is, MCUCTL_REG_ISSR(0));
 158        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 159        fimc_is_hw_set_intgr0_gd0(is);
 160}
 161
 162void fimc_is_hw_load_setfile(struct fimc_is *is)
 163{
 164        fimc_is_hw_wait_intmsr0_intmsd0(is);
 165        mcuctl_write(HIC_LOAD_SET_FILE, is, MCUCTL_REG_ISSR(0));
 166        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 167        fimc_is_hw_set_intgr0_gd0(is);
 168}
 169
 170int fimc_is_hw_change_mode(struct fimc_is *is)
 171{
 172        const u8 cmd[] = {
 173                HIC_PREVIEW_STILL, HIC_PREVIEW_VIDEO,
 174                HIC_CAPTURE_STILL, HIC_CAPTURE_VIDEO,
 175        };
 176
 177        if (WARN_ON(is->config_index >= ARRAY_SIZE(cmd)))
 178                return -EINVAL;
 179
 180        mcuctl_write(cmd[is->config_index], is, MCUCTL_REG_ISSR(0));
 181        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 182        mcuctl_write(is->setfile.sub_index, is, MCUCTL_REG_ISSR(2));
 183        fimc_is_hw_set_intgr0_gd0(is);
 184        return 0;
 185}
 186
 187void fimc_is_hw_stream_on(struct fimc_is *is)
 188{
 189        fimc_is_hw_wait_intmsr0_intmsd0(is);
 190        mcuctl_write(HIC_STREAM_ON, is, MCUCTL_REG_ISSR(0));
 191        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 192        mcuctl_write(0, is, MCUCTL_REG_ISSR(2));
 193        fimc_is_hw_set_intgr0_gd0(is);
 194}
 195
 196void fimc_is_hw_stream_off(struct fimc_is *is)
 197{
 198        fimc_is_hw_wait_intmsr0_intmsd0(is);
 199        mcuctl_write(HIC_STREAM_OFF, is, MCUCTL_REG_ISSR(0));
 200        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 201        fimc_is_hw_set_intgr0_gd0(is);
 202}
 203
 204void fimc_is_hw_subip_power_off(struct fimc_is *is)
 205{
 206        fimc_is_hw_wait_intmsr0_intmsd0(is);
 207        mcuctl_write(HIC_POWER_DOWN, is, MCUCTL_REG_ISSR(0));
 208        mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
 209        fimc_is_hw_set_intgr0_gd0(is);
 210}
 211
 212int fimc_is_itf_s_param(struct fimc_is *is, bool update)
 213{
 214        int ret;
 215
 216        if (update)
 217                __is_hw_update_params(is);
 218
 219        fimc_is_mem_barrier();
 220
 221        clear_bit(IS_ST_BLOCK_CMD_CLEARED, &is->state);
 222        fimc_is_hw_set_param(is);
 223        ret = fimc_is_wait_event(is, IS_ST_BLOCK_CMD_CLEARED, 1,
 224                                FIMC_IS_CONFIG_TIMEOUT);
 225        if (ret < 0)
 226                dev_err(&is->pdev->dev, "%s() timeout\n", __func__);
 227
 228        return ret;
 229}
 230
 231int fimc_is_itf_mode_change(struct fimc_is *is)
 232{
 233        int ret;
 234
 235        clear_bit(IS_ST_CHANGE_MODE, &is->state);
 236        fimc_is_hw_change_mode(is);
 237        ret = fimc_is_wait_event(is, IS_ST_CHANGE_MODE, 1,
 238                                FIMC_IS_CONFIG_TIMEOUT);
 239        if (!ret < 0)
 240                dev_err(&is->pdev->dev, "%s(): mode change (%d) timeout\n",
 241                        __func__, is->config_index);
 242        return ret;
 243}
 244