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dm: Add Hardware Spinlock class

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This is uclass for Hardware Spinlocks.
It implements two mandatory operations: lock and unlock
and one optional relax operation.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Benjamin Gaignard
2018-11-27 13:49:50 +01:00
committed by Tom Rini
parent 3b074fb22b
commit 7f84fc670b
13 changed files with 414 additions and 0 deletions
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include/dm/uclass-id.h
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@@ -42,6 +42,7 @@ enum uclass_id {
UCLASS_FIRMWARE, /* Firmware */
UCLASS_FS_FIRMWARE_LOADER, /* Generic loader */
UCLASS_GPIO, /* Bank of general-purpose I/O pins */
UCLASS_HWSPINLOCK, /* Hardware semaphores */
UCLASS_I2C, /* I2C bus */
UCLASS_I2C_EEPROM, /* I2C EEPROM device */
UCLASS_I2C_GENERIC, /* Generic I2C device */