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arch/risc-v/src/mpfs/mpfs_i2c.c: Clear I2C_CTRL bits when initializing/deinitializing bus

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Ensure that there are no pending state or interrupts in the i2c controller. This removes
errors caused by deinitialize/initialize sequences in error cases.

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
This commit is contained in:
Jukka Laitinen 2024-01-10 08:45:25 +02:00 committed by Xiang Xiao
parent bcf7aa4b63
commit dae31dc866
1 changed files with 3 additions and 5 deletions
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8
arch/risc-v/src/mpfs/mpfs_i2c.c
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@ -358,10 +358,9 @@ static int mpfs_i2c_init(struct mpfs_i2c_priv_s *priv)
putreg32(priv->ser_address, MPFS_I2C_ADDR);
/* Enable i2c bus */
/* Enable i2c bus, clear all other bits */
modifyreg32(MPFS_I2C_CTRL, MPFS_I2C_CTRL_ENS1_MASK,
MPFS_I2C_CTRL_ENS1_MASK);
putreg32(MPFS_I2C_CTRL_ENS1_MASK, MPFS_I2C_CTRL);
priv->initialized = true;
}
@ -385,8 +384,7 @@ static void mpfs_i2c_deinit(struct mpfs_i2c_priv_s *priv)
up_disable_irq(priv->plic_irq);
irq_detach(priv->plic_irq);
modifyreg32(MPFS_I2C_CTRL, MPFS_I2C_CTRL_ENS1_MASK,
~MPFS_I2C_CTRL_ENS1_MASK);
putreg32(0, MPFS_I2C_CTRL);
priv->initialized = false;
}