From: Heiner Kallweit <hkallweit1@gmail.com> To: Wolfram Sang <wsa@the-dreams.de>, Jerome Brunet <jbrunet@baylibre.com>, Kevin Hilman <khilman@baylibre.com> Cc: "linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>, linux-amlogic@lists.infradead.org Subject: [PATCH v5 09/10] i2c: meson: remove meson_i2c_write_tokens Date: Sat, 25 Mar 2017 14:12:04 +0100 [thread overview] Message-ID: <c5bd5830-1ae5-ffd6-978e-3aef9cd68146@gmail.com> (raw) In-Reply-To: <645519b8-93e6-57b1-ae8f-7804c6beb9b1@gmail.com> 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@gmail.com> --- v2: - rebased v3: - no changes v4: - no changes v5: - 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 8a088d26..d3c33ee4 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); @@ -210,6 +204,9 @@ 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) @@ -275,12 +272,10 @@ 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); @@ -321,7 +316,6 @@ 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
WARNING: multiple messages have this Message-ID (diff)
From: hkallweit1@gmail.com (Heiner Kallweit) To: linus-amlogic@lists.infradead.org Subject: [PATCH v5 09/10] i2c: meson: remove meson_i2c_write_tokens Date: Sat, 25 Mar 2017 14:12:04 +0100 [thread overview] Message-ID: <c5bd5830-1ae5-ffd6-978e-3aef9cd68146@gmail.com> (raw) In-Reply-To: <645519b8-93e6-57b1-ae8f-7804c6beb9b1@gmail.com> 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@gmail.com> --- v2: - rebased v3: - no changes v4: - no changes v5: - 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 8a088d26..d3c33ee4 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); @@ -210,6 +204,9 @@ 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) @@ -275,12 +272,10 @@ 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); @@ -321,7 +316,6 @@ 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
next prev parent reply other threads:[~2017-03-25 13:14 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-03-25 12:57 [PATCH v5 00/10] i2c: meson: series with improvements Heiner Kallweit 2017-03-25 12:57 ` Heiner Kallweit 2017-03-25 12:58 ` [PATCH v5 01/10] i2c: meson: use min instead of min_t where min_t isn't needed Heiner Kallweit 2017-03-25 12:58 ` Heiner Kallweit 2017-03-25 13:01 ` [PATCH v5 02/10] i2c: meson: remove member irq from struct meson_i2c Heiner Kallweit 2017-03-25 13:01 ` Heiner Kallweit 2017-03-25 13:04 ` [PATCH v5 03/10] i2c: meson: set clock divider in probe instead of setting it for each transfer Heiner Kallweit 2017-03-25 13:04 ` Heiner Kallweit 2017-03-25 13:06 ` [PATCH v5 04/10] i2c: meson: use i2c core for DT clock-frequency parsing Heiner Kallweit 2017-03-25 13:06 ` Heiner Kallweit 2017-03-25 13:07 ` [PATCH v5 05/10] i2c: meson: use full 12 bits for clock divider Heiner Kallweit 2017-03-25 13:07 ` Heiner Kallweit 2017-03-25 13:09 ` [PATCH v5 06/10] i2c: meson: remove variable count from meson_i2c_xfer Heiner Kallweit 2017-03-25 13:09 ` Heiner Kallweit 2017-03-25 13:10 ` [PATCH v5 07/10] i2c: meson: improve interrupt handler and detect spurious interrupts Heiner Kallweit 2017-03-25 13:10 ` Heiner Kallweit 2017-03-25 13:11 ` [PATCH v5 08/10] i2c: meson: don't create separate token chain just for the stop command Heiner Kallweit 2017-03-25 13:11 ` Heiner Kallweit 2017-03-25 13:12 ` Heiner Kallweit [this message] 2017-03-25 13:12 ` [PATCH v5 09/10] i2c: meson: remove meson_i2c_write_tokens Heiner Kallweit 2017-03-25 13:14 ` [PATCH v5 10/10] i2c: meson: improve and simplify interrupt handler Heiner Kallweit 2017-03-25 13:14 ` Heiner Kallweit 2017-03-30 15:56 ` [PATCH v5 00/10] i2c: meson: series with improvements Wolfram Sang 2017-03-30 15:56 ` Wolfram Sang
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