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From: Robin Murphy <robin.murphy@arm.com>
To: broonie@kernel.org, nsaenzjulienne@suse.de, f.fainelli@gmail.com,
	rjui@broadcom.com, sbranden@broadcom.com
Cc: linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
	lukas@wunner.de, bcm-kernel-feedback-list@broadcom.com,
	linux-rpi-kernel@lists.infradead.org, kernel@martin.sperl.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] spi: bcm3835: Tidy up bcm2835_spi_reset_hw()
Date: Tue, 16 Jun 2020 01:09:27 +0100	[thread overview]
Message-ID: <eca458ae1a0d3934d0627f90e25d294fefd4b13d.1592261248.git.robin.murphy@arm.com> (raw)
In-Reply-To: <cover.1592261248.git.robin.murphy@arm.com>

It doesn't need a struct spi_controller, and every callsite has
already retrieved the appropriate struct bcm2835_spi, so just pass
that directly.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 drivers/spi/spi-bcm2835.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c
index 237bd306c268..524a91e52111 100644
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -335,9 +335,8 @@ static inline void bcm2835_wr_fifo_blind(struct bcm2835_spi *bs, int count)
 	}
 }
 
-static void bcm2835_spi_reset_hw(struct spi_controller *ctlr)
+static void bcm2835_spi_reset_hw(struct bcm2835_spi *bs)
 {
-	struct bcm2835_spi *bs = spi_controller_get_devdata(ctlr);
 	u32 cs = bcm2835_rd(bs, BCM2835_SPI_CS);
 
 	/* Disable SPI interrupts and transfer */
@@ -386,7 +385,7 @@ static irqreturn_t bcm2835_spi_interrupt(int irq, void *dev_id)
 
 	if (!bs->rx_len) {
 		/* Transfer complete - reset SPI HW */
-		bcm2835_spi_reset_hw(ctlr);
+		bcm2835_spi_reset_hw(bs);
 		/* wake up the framework */
 		complete(&ctlr->xfer_completion);
 	}
@@ -607,7 +606,7 @@ static void bcm2835_spi_dma_rx_done(void *data)
 	bcm2835_spi_undo_prologue(bs);
 
 	/* reset fifo and HW */
-	bcm2835_spi_reset_hw(ctlr);
+	bcm2835_spi_reset_hw(bs);
 
 	/* and mark as completed */;
 	complete(&ctlr->xfer_completion);
@@ -641,7 +640,7 @@ static void bcm2835_spi_dma_tx_done(void *data)
 		dmaengine_terminate_async(ctlr->dma_rx);
 
 	bcm2835_spi_undo_prologue(bs);
-	bcm2835_spi_reset_hw(ctlr);
+	bcm2835_spi_reset_hw(bs);
 	complete(&ctlr->xfer_completion);
 }
 
@@ -825,14 +824,14 @@ static int bcm2835_spi_transfer_one_dma(struct spi_controller *ctlr,
 	if (!bs->rx_buf && !bs->tx_dma_active &&
 	    cmpxchg(&bs->rx_dma_active, true, false)) {
 		dmaengine_terminate_async(ctlr->dma_rx);
-		bcm2835_spi_reset_hw(ctlr);
+		bcm2835_spi_reset_hw(bs);
 	}
 
 	/* wait for wakeup in framework */
 	return 1;
 
 err_reset_hw:
-	bcm2835_spi_reset_hw(ctlr);
+	bcm2835_spi_reset_hw(bs);
 	bcm2835_spi_undo_prologue(bs);
 	return ret;
 }
@@ -1074,7 +1073,7 @@ static int bcm2835_spi_transfer_one_poll(struct spi_controller *ctlr,
 	}
 
 	/* Transfer complete - reset SPI HW */
-	bcm2835_spi_reset_hw(ctlr);
+	bcm2835_spi_reset_hw(bs);
 	/* and return without waiting for completion */
 	return 0;
 }
@@ -1182,7 +1181,7 @@ static void bcm2835_spi_handle_err(struct spi_controller *ctlr,
 	bcm2835_spi_undo_prologue(bs);
 
 	/* and reset */
-	bcm2835_spi_reset_hw(ctlr);
+	bcm2835_spi_reset_hw(bs);
 }
 
 static int chip_match_name(struct gpio_chip *chip, void *data)
-- 
2.23.0.dirty


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  reply	other threads:[~2020-06-16  0:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-16  0:09 [PATCH 0/3] spi: bcm2835: Interrupt-handling optimisations Robin Murphy
2020-06-16  0:09 ` Robin Murphy [this message]
2020-06-16  0:09 ` [PATCH 2/3] spi: bcm2835: Micro-optimise IRQ handler Robin Murphy
2020-06-16  0:09 ` [PATCH 3/3] spi: bcm2835: Micro-optimise FIFO loops Robin Murphy
2020-07-01 22:24 ` [PATCH 0/3] spi: bcm2835: Interrupt-handling optimisations Mark Brown

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