Eric Lee / smarc-uboot

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Commit 440bc11f2e10dd80c7f5e717bc52daff73091bd5

Authored by Mario Six
Committed by Anatolij Gustschin
1 parent 3958bffeb3
Exists in smarc_8mq_lf_v2020.04 and in 11 other branches 8qm-imx_v2020.04_5.4.70_2.3.0, emb_lf_v2022.04, pitx_8mp_lf_v2020.04, smarc-8m-android-10.0.0_2.6.0, smarc-8m-android-11.0.0_2.0.0, smarc-8mp-android-11.0.0_2.0.0, smarc_8m-imx_v2019.04_4.19.35_1.1.0, smarc_8mm-imx_v2019.04_4.19.35_1.1.0, smarc_8mm-imx_v2020.04_5.4.24_2.1.0, smarc_8mp_lf_v2020.04, smarc_8mq-imx_v2020.04_5.4.24_2.1.0

misc: uclass: Add enable/disable function 

Add generic enable/disable function to the misc uclass.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>

Showing 2 changed files with 37 additions and 0 deletions Side-by-side Diff

drivers/misc/misc-uclass.c
Diff comments   View file @ 440bc11
... ... @@ -55,6 +55,16 @@
55 55 return ops->call(dev, msgid, tx_msg, tx_size, rx_msg, rx_size);
56 56 }
57 57  
  58 +int misc_set_enabled(struct udevice *dev, bool val)
  59 +{
  60 + const struct misc_ops *ops = device_get_ops(dev);
  61 +
  62 + if (!ops->set_enabled)
  63 + return -ENOSYS;
  64 +
  65 + return ops->set_enabled(dev, val);
  66 +}
  67 +
58 68 UCLASS_DRIVER(misc) = {
59 69 .id = UCLASS_MISC,
60 70 .name = "misc",
... ... @@ -60,6 +60,23 @@
60 60 void *rx_msg, int rx_size);
61 61  
62 62 /**
  63 + * misc_set_enabled() - Enable or disable a device.
  64 + * @dev: the device to enable or disable.
  65 + * @val: the flag that tells the driver to either enable or disable the device.
  66 + *
  67 + * The semantics of "disable" and "enable" should be understood here as
  68 + * activating or deactivating the device's primary function, hence a "disabled"
  69 + * device should be dormant, but still answer to commands and queries.
  70 + *
  71 + * A probed device may start in a disabled or enabled state, depending on the
  72 + * driver and hardware.
  73 + *
  74 + * Return: -ve on error, 0 if the previous state was "disabled", 1 if the
  75 + * previous state was "enabled"
  76 + */
  77 +int misc_set_enabled(struct udevice *dev, bool val);
  78 +
  79 +/*
63 80 * struct misc_ops - Driver model Misc operations
64 81 *
65 82 * The uclass interface is implemented by all miscellaneous devices which
... ... @@ -112,6 +129,16 @@
112 129 */
113 130 int (*call)(struct udevice *dev, int msgid, void *tx_msg, int tx_size,
114 131 void *rx_msg, int rx_size);
  132 + /**
  133 + * Enable or disable a device, optional.
  134 + * @dev: the device to enable.
  135 + * @val: the flag that tells the driver to either enable or disable the
  136 + * device.
  137 + *
  138 + * Return: -ve on error, 0 if the previous state was "disabled", 1 if
  139 + * the previous state was "enabled"
  140 + */
  141 + int (*set_enabled)(struct udevice *dev, bool val);
115 142 };
116 143  
117 144 #endif /* _MISC_H_ */