meson_i2c_write_tokens is always called directly after
meson_i2c_prepare_xfer (and only then). So we can simplify the code by
removing meson_i2c_write_tokens and moving the two statements of
meson_i2c_write_tokens to the end of meson_i2c_prepare_xfer.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
v2:
- rebased
v3:
- no changes
v4:
- no changes
---
drivers/i2c/busses/i2c-meson.c | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/drivers/i2c/busses/i2c-meson.c b/drivers/i2c/busses/i2c-meson.c
index 6c873ed8..23f25efa 100644
--- a/drivers/i2c/busses/i2c-meson.c
+++ b/drivers/i2c/busses/i2c-meson.c
@@ -123,12 +123,6 @@ static void meson_i2c_add_token(struct meson_i2c *i2c, int token)
i2c->num_tokens++;
}
-static void meson_i2c_write_tokens(struct meson_i2c *i2c)
-{
- writel(i2c->tokens[0], i2c->regs + REG_TOK_LIST0);
- writel(i2c->tokens[1], i2c->regs + REG_TOK_LIST1);
-}
-
static void meson_i2c_set_clk_div(struct meson_i2c *i2c, unsigned int freq)
{
unsigned long clk_rate = clk_get_rate(i2c->clk);
@@ -207,6 +201,9 @@ static void meson_i2c_prepare_xfer(struct meson_i2c *i2c)
if (i2c->last && i2c->pos + i2c->count >= i2c->msg->len)
meson_i2c_add_token(i2c, TOKEN_STOP);
+
+ writel(i2c->tokens[0], i2c->regs + REG_TOK_LIST0);
+ writel(i2c->tokens[1], i2c->regs + REG_TOK_LIST1);
}
static irqreturn_t meson_i2c_irq(int irqno, void *dev_id)
@@ -272,12 +269,10 @@ static irqreturn_t meson_i2c_irq(int irqno, void *dev_id)
}
out:
- if (i2c->state != STATE_IDLE) {
+ if (i2c->state != STATE_IDLE)
/* Restart the processing */
- meson_i2c_write_tokens(i2c);
meson_i2c_set_mask(i2c, REG_CTRL, REG_CTRL_START,
REG_CTRL_START);
- }
spin_unlock(&i2c->lock);
@@ -318,7 +313,6 @@ static int meson_i2c_xfer_msg(struct meson_i2c *i2c, struct i2c_msg *msg,
i2c->state = (msg->flags & I2C_M_RD) ? STATE_READ : STATE_WRITE;
meson_i2c_prepare_xfer(i2c);
- meson_i2c_write_tokens(i2c);
reinit_completion(&i2c->done);
/* Start the transfer */
--
2.12.0
--
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