[media] mt9m111: power down most circuits when suspended
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Родитель
47921932f3
Коммит
a650bf1eff
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@ -226,7 +226,6 @@ struct mt9m111 {
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const struct mt9m111_datafmt *fmt;
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int lastpage; /* PageMap cache value */
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unsigned char datawidth;
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unsigned int powered:1;
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};
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static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
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@ -360,12 +359,7 @@ static int mt9m111_setup_rect(struct mt9m111 *mt9m111,
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static int mt9m111_enable(struct mt9m111 *mt9m111)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
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int ret;
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ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
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if (!ret)
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mt9m111->powered = 1;
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return ret;
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return reg_write(RESET, MT9M111_RESET_CHIP_ENABLE);
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}
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static int mt9m111_reset(struct mt9m111 *mt9m111)
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@ -751,9 +745,20 @@ static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
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static int mt9m111_suspend(struct mt9m111 *mt9m111)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
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int ret;
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v4l2_ctrl_s_ctrl(mt9m111->gain, mt9m111_get_global_gain(mt9m111));
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return 0;
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ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
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if (!ret)
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ret = reg_set(RESET, MT9M111_RESET_RESET_SOC |
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MT9M111_RESET_OUTPUT_DISABLE |
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MT9M111_RESET_ANALOG_STANDBY);
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if (!ret)
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ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
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return ret;
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}
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static void mt9m111_restore_state(struct mt9m111 *mt9m111)
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@ -766,15 +771,12 @@ static void mt9m111_restore_state(struct mt9m111 *mt9m111)
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static int mt9m111_resume(struct mt9m111 *mt9m111)
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{
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int ret = 0;
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int ret = mt9m111_enable(mt9m111);
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if (!ret)
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ret = mt9m111_reset(mt9m111);
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if (!ret)
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mt9m111_restore_state(mt9m111);
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if (mt9m111->powered) {
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ret = mt9m111_enable(mt9m111);
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if (!ret)
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ret = mt9m111_reset(mt9m111);
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if (!ret)
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mt9m111_restore_state(mt9m111);
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}
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return ret;
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}
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