mirror of https://gitee.com/openkylin/linux.git
i2c: omap: switch over to autosuspend API
this helps us reduce unnecessary pm transitions in case we have another i2c message starting soon. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
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@ -55,6 +55,9 @@
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/* timeout waiting for the controller to respond */
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/* timeout waiting for the controller to respond */
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#define OMAP_I2C_TIMEOUT (msecs_to_jiffies(1000))
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#define OMAP_I2C_TIMEOUT (msecs_to_jiffies(1000))
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/* timeout for pm runtime autosuspend */
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#define OMAP_I2C_PM_TIMEOUT 1000 /* ms */
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/* For OMAP3 I2C_IV has changed to I2C_WE (wakeup enable) */
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/* For OMAP3 I2C_IV has changed to I2C_WE (wakeup enable) */
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enum {
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enum {
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OMAP_I2C_REV_REG = 0,
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OMAP_I2C_REV_REG = 0,
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@ -645,7 +648,8 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
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omap_i2c_wait_for_bb(dev);
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omap_i2c_wait_for_bb(dev);
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out:
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out:
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pm_runtime_put(dev->dev);
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pm_runtime_mark_last_busy(dev->dev);
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pm_runtime_put_autosuspend(dev->dev);
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return r;
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return r;
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}
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}
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@ -1113,6 +1117,9 @@ omap_i2c_probe(struct platform_device *pdev)
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dev->regs = (u8 *)reg_map_ip_v1;
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dev->regs = (u8 *)reg_map_ip_v1;
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pm_runtime_enable(dev->dev);
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pm_runtime_enable(dev->dev);
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pm_runtime_set_autosuspend_delay(dev->dev, OMAP_I2C_PM_TIMEOUT);
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pm_runtime_use_autosuspend(dev->dev);
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r = pm_runtime_get_sync(dev->dev);
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r = pm_runtime_get_sync(dev->dev);
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if (IS_ERR_VALUE(r))
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if (IS_ERR_VALUE(r))
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goto err_free_mem;
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goto err_free_mem;
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@ -1190,7 +1197,8 @@ omap_i2c_probe(struct platform_device *pdev)
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of_i2c_register_devices(adap);
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of_i2c_register_devices(adap);
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pm_runtime_put(dev->dev);
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pm_runtime_mark_last_busy(dev->dev);
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pm_runtime_put_autosuspend(dev->dev);
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return 0;
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return 0;
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