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Diffstat (limited to 'drivers/spi/spi-atmel.c')
-rw-r--r--drivers/spi/spi-atmel.c85
1 files changed, 45 insertions, 40 deletions
diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index ea1ec009f44..273db0beb2b 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -170,18 +170,18 @@
/* Bit manipulation macros */
#define SPI_BIT(name) \
(1 << SPI_##name##_OFFSET)
-#define SPI_BF(name,value) \
+#define SPI_BF(name, value) \
(((value) & ((1 << SPI_##name##_SIZE) - 1)) << SPI_##name##_OFFSET)
-#define SPI_BFEXT(name,value) \
+#define SPI_BFEXT(name, value) \
(((value) >> SPI_##name##_OFFSET) & ((1 << SPI_##name##_SIZE) - 1))
-#define SPI_BFINS(name,value,old) \
- ( ((old) & ~(((1 << SPI_##name##_SIZE) - 1) << SPI_##name##_OFFSET)) \
- | SPI_BF(name,value))
+#define SPI_BFINS(name, value, old) \
+ (((old) & ~(((1 << SPI_##name##_SIZE) - 1) << SPI_##name##_OFFSET)) \
+ | SPI_BF(name, value))
/* Register access macros */
-#define spi_readl(port,reg) \
+#define spi_readl(port, reg) \
__raw_readl((port)->regs + SPI_##reg)
-#define spi_writel(port,reg,value) \
+#define spi_writel(port, reg, value) \
__raw_writel((value), (port)->regs + SPI_##reg)
/* use PIO for small transfers, avoiding DMA setup/teardown overhead and
@@ -360,12 +360,12 @@ static void cs_deactivate(struct atmel_spi *as, struct spi_device *spi)
gpio_set_value(asd->npcs_pin, !active);
}
-static void atmel_spi_lock(struct atmel_spi *as)
+static void atmel_spi_lock(struct atmel_spi *as) __acquires(&as->lock)
{
spin_lock_irqsave(&as->lock, as->flags);
}
-static void atmel_spi_unlock(struct atmel_spi *as)
+static void atmel_spi_unlock(struct atmel_spi *as) __releases(&as->lock)
{
spin_unlock_irqrestore(&as->lock, as->flags);
}
@@ -629,9 +629,9 @@ static int atmel_spi_next_xfer_dma_submit(struct spi_master *master,
goto err_dma;
dev_dbg(master->dev.parent,
- " start dma xfer %p: len %u tx %p/%08x rx %p/%08x\n",
- xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
- xfer->rx_buf, xfer->rx_dma);
+ " start dma xfer %p: len %u tx %p/%08llx rx %p/%08llx\n",
+ xfer, xfer->len, xfer->tx_buf, (unsigned long long)xfer->tx_dma,
+ xfer->rx_buf, (unsigned long long)xfer->rx_dma);
/* Enable relevant interrupts */
spi_writel(as, IER, SPI_BIT(OVRES));
@@ -732,9 +732,10 @@ static void atmel_spi_pdc_next_xfer(struct spi_master *master,
spi_writel(as, TCR, len);
dev_dbg(&msg->spi->dev,
- " start xfer %p: len %u tx %p/%08x rx %p/%08x\n",
- xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
- xfer->rx_buf, xfer->rx_dma);
+ " start xfer %p: len %u tx %p/%08llx rx %p/%08llx\n",
+ xfer, xfer->len, xfer->tx_buf,
+ (unsigned long long)xfer->tx_dma, xfer->rx_buf,
+ (unsigned long long)xfer->rx_dma);
} else {
xfer = as->next_transfer;
remaining = as->next_remaining_bytes;
@@ -771,9 +772,10 @@ static void atmel_spi_pdc_next_xfer(struct spi_master *master,
spi_writel(as, TNCR, len);
dev_dbg(&msg->spi->dev,
- " next xfer %p: len %u tx %p/%08x rx %p/%08x\n",
- xfer, xfer->len, xfer->tx_buf, xfer->tx_dma,
- xfer->rx_buf, xfer->rx_dma);
+ " next xfer %p: len %u tx %p/%08llx rx %p/%08llx\n",
+ xfer, xfer->len, xfer->tx_buf,
+ (unsigned long long)xfer->tx_dma, xfer->rx_buf,
+ (unsigned long long)xfer->rx_dma);
ieval = SPI_BIT(ENDRX) | SPI_BIT(OVRES);
} else {
spi_writel(as, RNCR, 0);
@@ -1399,8 +1401,8 @@ static int atmel_spi_transfer(struct spi_device *spi, struct spi_message *msg)
asd = spi->controller_state;
bits = (asd->csr >> 4) & 0xf;
if (bits != xfer->bits_per_word - 8) {
- dev_dbg(&spi->dev, "you can't yet change "
- "bits_per_word in transfers\n");
+ dev_dbg(&spi->dev,
+ "you can't yet change bits_per_word in transfers\n");
return -ENOPROTOOPT;
}
}
@@ -1514,7 +1516,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
/* setup spi core then atmel-specific driver state */
ret = -ENOMEM;
- master = spi_alloc_master(&pdev->dev, sizeof *as);
+ master = spi_alloc_master(&pdev->dev, sizeof(*as));
if (!master)
goto out_free;
@@ -1544,9 +1546,11 @@ static int atmel_spi_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&as->queue);
as->pdev = pdev;
- as->regs = ioremap(regs->start, resource_size(regs));
- if (!as->regs)
+ as->regs = devm_ioremap_resource(&pdev->dev, regs);
+ if (IS_ERR(as->regs)) {
+ ret = PTR_ERR(as->regs);
goto out_free_buffer;
+ }
as->phybase = regs->start;
as->irq = irq;
as->clk = clk;
@@ -1579,7 +1583,9 @@ static int atmel_spi_probe(struct platform_device *pdev)
goto out_unmap_regs;
/* Initialize the hardware */
- clk_enable(clk);
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ goto out_free_irq;
spi_writel(as, CR, SPI_BIT(SWRST));
spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */
if (as->caps.has_wdrbt) {
@@ -1609,10 +1615,10 @@ out_free_dma:
spi_writel(as, CR, SPI_BIT(SWRST));
spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */
- clk_disable(clk);
+ clk_disable_unprepare(clk);
+out_free_irq:
free_irq(irq, master);
out_unmap_regs:
- iounmap(as->regs);
out_free_buffer:
if (!as->use_pdc)
tasklet_kill(&as->tasklet);
@@ -1661,39 +1667,39 @@ static int atmel_spi_remove(struct platform_device *pdev)
dma_free_coherent(&pdev->dev, BUFFER_SIZE, as->buffer,
as->buffer_dma);
- clk_disable(as->clk);
+ clk_disable_unprepare(as->clk);
clk_put(as->clk);
free_irq(as->irq, master);
- iounmap(as->regs);
spi_unregister_master(master);
return 0;
}
-#ifdef CONFIG_PM
-
-static int atmel_spi_suspend(struct platform_device *pdev, pm_message_t mesg)
+#ifdef CONFIG_PM_SLEEP
+static int atmel_spi_suspend(struct device *dev)
{
- struct spi_master *master = platform_get_drvdata(pdev);
+ struct spi_master *master = dev_get_drvdata(dev);
struct atmel_spi *as = spi_master_get_devdata(master);
- clk_disable(as->clk);
+ clk_disable_unprepare(as->clk);
return 0;
}
-static int atmel_spi_resume(struct platform_device *pdev)
+static int atmel_spi_resume(struct device *dev)
{
- struct spi_master *master = platform_get_drvdata(pdev);
+ struct spi_master *master = dev_get_drvdata(dev);
struct atmel_spi *as = spi_master_get_devdata(master);
- clk_enable(as->clk);
+ clk_prepare_enable(as->clk);
return 0;
}
+static SIMPLE_DEV_PM_OPS(atmel_spi_pm_ops, atmel_spi_suspend, atmel_spi_resume);
+
+#define ATMEL_SPI_PM_OPS (&atmel_spi_pm_ops)
#else
-#define atmel_spi_suspend NULL
-#define atmel_spi_resume NULL
+#define ATMEL_SPI_PM_OPS NULL
#endif
#if defined(CONFIG_OF)
@@ -1709,10 +1715,9 @@ static struct platform_driver atmel_spi_driver = {
.driver = {
.name = "atmel_spi",
.owner = THIS_MODULE,
+ .pm = ATMEL_SPI_PM_OPS,
.of_match_table = of_match_ptr(atmel_spi_dt_ids),
},
- .suspend = atmel_spi_suspend,
- .resume = atmel_spi_resume,
.probe = atmel_spi_probe,
.remove = atmel_spi_remove,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-06-04 20:43:04 +0000