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-rw-r--r--drivers/spi/mpc52xx_psc_spi.c55
-rw-r--r--drivers/spi/omap2_mcspi.c18
-rw-r--r--drivers/spi/omap_uwire.c23
-rw-r--r--drivers/spi/orion_spi.c5
-rw-r--r--drivers/spi/pxa2xx_spi.c54
-rw-r--r--drivers/spi/spi.c24
-rw-r--r--drivers/spi/spi_s3c24xx.c6
7 files changed, 86 insertions, 99 deletions
diff --git a/drivers/spi/mpc52xx_psc_spi.c b/drivers/spi/mpc52xx_psc_spi.c
index cdb3d319171..0debe11b67b 100644
--- a/drivers/spi/mpc52xx_psc_spi.c
+++ b/drivers/spi/mpc52xx_psc_spi.c
@@ -15,13 +15,7 @@
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
-
-#if defined(CONFIG_PPC_MERGE)
#include <linux/of_platform.h>
-#else
-#include <linux/platform_device.h>
-#endif
-
#include <linux/workqueue.h>
#include <linux/completion.h>
#include <linux/io.h>
@@ -471,53 +465,6 @@ static int __exit mpc52xx_psc_spi_do_remove(struct device *dev)
return 0;
}
-#if !defined(CONFIG_PPC_MERGE)
-static int __init mpc52xx_psc_spi_probe(struct platform_device *dev)
-{
- switch(dev->id) {
- case 1:
- case 2:
- case 3:
- case 6:
- return mpc52xx_psc_spi_do_probe(&dev->dev,
- MPC52xx_PA(MPC52xx_PSCx_OFFSET(dev->id)),
- MPC52xx_PSC_SIZE, platform_get_irq(dev, 0), dev->id);
- default:
- return -EINVAL;
- }
-}
-
-static int __exit mpc52xx_psc_spi_remove(struct platform_device *dev)
-{
- return mpc52xx_psc_spi_do_remove(&dev->dev);
-}
-
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:mpc52xx-psc-spi");
-
-static struct platform_driver mpc52xx_psc_spi_platform_driver = {
- .remove = __exit_p(mpc52xx_psc_spi_remove),
- .driver = {
- .name = "mpc52xx-psc-spi",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init mpc52xx_psc_spi_init(void)
-{
- return platform_driver_probe(&mpc52xx_psc_spi_platform_driver,
- mpc52xx_psc_spi_probe);
-}
-module_init(mpc52xx_psc_spi_init);
-
-static void __exit mpc52xx_psc_spi_exit(void)
-{
- platform_driver_unregister(&mpc52xx_psc_spi_platform_driver);
-}
-module_exit(mpc52xx_psc_spi_exit);
-
-#else /* defined(CONFIG_PPC_MERGE) */
-
static int __init mpc52xx_psc_spi_of_probe(struct of_device *op,
const struct of_device_id *match)
{
@@ -586,8 +533,6 @@ static void __exit mpc52xx_psc_spi_exit(void)
}
module_exit(mpc52xx_psc_spi_exit);
-#endif /* defined(CONFIG_PPC_MERGE) */
-
MODULE_AUTHOR("Dragos Carp");
MODULE_DESCRIPTION("MPC52xx PSC SPI Driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
index 9d2186fd74a..454a2712e62 100644
--- a/drivers/spi/omap2_mcspi.c
+++ b/drivers/spi/omap2_mcspi.c
@@ -119,12 +119,14 @@ struct omap2_mcspi {
struct clk *fck;
/* Virtual base address of the controller */
void __iomem *base;
+ unsigned long phys;
/* SPI1 has 4 channels, while SPI2 has 2 */
struct omap2_mcspi_dma *dma_channels;
};
struct omap2_mcspi_cs {
void __iomem *base;
+ unsigned long phys;
int word_len;
};
@@ -233,7 +235,7 @@ omap2_mcspi_txrx_dma(struct spi_device *spi, struct spi_transfer *xfer)
c = count;
word_len = cs->word_len;
- base = (unsigned long) io_v2p(cs->base);
+ base = cs->phys;
tx_reg = base + OMAP2_MCSPI_TX0;
rx_reg = base + OMAP2_MCSPI_RX0;
rx = xfer->rx_buf;
@@ -633,6 +635,7 @@ static int omap2_mcspi_setup(struct spi_device *spi)
if (!cs)
return -ENOMEM;
cs->base = mcspi->base + spi->chip_select * 0x14;
+ cs->phys = mcspi->phys + spi->chip_select * 0x14;
spi->controller_state = cs;
}
@@ -1005,7 +1008,13 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev)
goto err1;
}
- mcspi->base = (void __iomem *) io_p2v(r->start);
+ mcspi->phys = r->start;
+ mcspi->base = ioremap(r->start, r->end - r->start + 1);
+ if (!mcspi->base) {
+ dev_dbg(&pdev->dev, "can't ioremap MCSPI\n");
+ status = -ENOMEM;
+ goto err1aa;
+ }
INIT_WORK(&mcspi->work, omap2_mcspi_work);
@@ -1055,6 +1064,8 @@ err3:
err2:
clk_put(mcspi->ick);
err1a:
+ iounmap(mcspi->base);
+err1aa:
release_mem_region(r->start, (r->end - r->start) + 1);
err1:
spi_master_put(master);
@@ -1067,6 +1078,7 @@ static int __exit omap2_mcspi_remove(struct platform_device *pdev)
struct omap2_mcspi *mcspi;
struct omap2_mcspi_dma *dma_channels;
struct resource *r;
+ void __iomem *base;
master = dev_get_drvdata(&pdev->dev);
mcspi = spi_master_get_devdata(master);
@@ -1078,7 +1090,9 @@ static int __exit omap2_mcspi_remove(struct platform_device *pdev)
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(r->start, (r->end - r->start) + 1);
+ base = mcspi->base;
spi_unregister_master(master);
+ iounmap(base);
kfree(dma_channels);
return 0;
diff --git a/drivers/spi/omap_uwire.c b/drivers/spi/omap_uwire.c
index 5515eb97d7c..bab6ff061e9 100644
--- a/drivers/spi/omap_uwire.c
+++ b/drivers/spi/omap_uwire.c
@@ -59,7 +59,6 @@
* and irqs should show there too...
*/
#define UWIRE_BASE_PHYS 0xFFFB3000
-#define UWIRE_BASE ((void *__iomem)IO_ADDRESS(UWIRE_BASE_PHYS))
/* uWire Registers: */
#define UWIRE_IO_SIZE 0x20
@@ -103,16 +102,21 @@ struct uwire_state {
};
/* REVISIT compile time constant for idx_shift? */
+/*
+ * Or, put it in a structure which is used throughout the driver;
+ * that avoids having to issue two loads for each bit of static data.
+ */
static unsigned int uwire_idx_shift;
+static void __iomem *uwire_base;
static inline void uwire_write_reg(int idx, u16 val)
{
- __raw_writew(val, UWIRE_BASE + (idx << uwire_idx_shift));
+ __raw_writew(val, uwire_base + (idx << uwire_idx_shift));
}
static inline u16 uwire_read_reg(int idx)
{
- return __raw_readw(UWIRE_BASE + (idx << uwire_idx_shift));
+ return __raw_readw(uwire_base + (idx << uwire_idx_shift));
}
static inline void omap_uwire_configure_mode(u8 cs, unsigned long flags)
@@ -492,6 +496,14 @@ static int __init uwire_probe(struct platform_device *pdev)
return -ENODEV;
uwire = spi_master_get_devdata(master);
+
+ uwire_base = ioremap(UWIRE_BASE_PHYS, UWIRE_IO_SIZE);
+ if (!uwire_base) {
+ dev_dbg(&pdev->dev, "can't ioremap UWIRE\n");
+ spi_master_put(master);
+ return -ENOMEM;
+ }
+
dev_set_drvdata(&pdev->dev, uwire);
uwire->ck = clk_get(&pdev->dev, "armxor_ck");
@@ -520,8 +532,10 @@ static int __init uwire_probe(struct platform_device *pdev)
uwire->bitbang.txrx_bufs = uwire_txrx;
status = spi_bitbang_start(&uwire->bitbang);
- if (status < 0)
+ if (status < 0) {
uwire_off(uwire);
+ iounmap(uwire_base);
+ }
return status;
}
@@ -534,6 +548,7 @@ static int __exit uwire_remove(struct platform_device *pdev)
status = spi_bitbang_stop(&uwire->bitbang);
uwire_off(uwire);
+ iounmap(uwire_base);
return status;
}
diff --git a/drivers/spi/orion_spi.c b/drivers/spi/orion_spi.c
index b872bfaf4bd..014becb7d53 100644
--- a/drivers/spi/orion_spi.c
+++ b/drivers/spi/orion_spi.c
@@ -364,6 +364,11 @@ static int orion_spi_setup(struct spi_device *spi)
return -EINVAL;
}
+ /* Fix ac timing if required. */
+ if (orion_spi->spi_info->enable_clock_fix)
+ orion_spi_setbits(orion_spi, ORION_SPI_IF_CONFIG_REG,
+ (1 << 14));
+
if (spi->bits_per_word == 0)
spi->bits_per_word = 8;
diff --git a/drivers/spi/pxa2xx_spi.c b/drivers/spi/pxa2xx_spi.c
index d47d3636227..dae87b1a4c6 100644
--- a/drivers/spi/pxa2xx_spi.c
+++ b/drivers/spi/pxa2xx_spi.c
@@ -47,6 +47,10 @@ MODULE_ALIAS("platform:pxa2xx-spi");
#define MAX_BUSES 3
+#define RX_THRESH_DFLT 8
+#define TX_THRESH_DFLT 8
+#define TIMOUT_DFLT 1000
+
#define DMA_INT_MASK (DCSR_ENDINTR | DCSR_STARTINTR | DCSR_BUSERR)
#define RESET_DMA_CHANNEL (DCSR_NODESC | DMA_INT_MASK)
#define IS_DMA_ALIGNED(x) ((((u32)(x)) & 0x07) == 0)
@@ -1171,6 +1175,8 @@ static int setup(struct spi_device *spi)
struct driver_data *drv_data = spi_master_get_devdata(spi->master);
struct ssp_device *ssp = drv_data->ssp;
unsigned int clk_div;
+ uint tx_thres = TX_THRESH_DFLT;
+ uint rx_thres = RX_THRESH_DFLT;
if (!spi->bits_per_word)
spi->bits_per_word = 8;
@@ -1209,8 +1215,7 @@ static int setup(struct spi_device *spi)
chip->cs_control = null_cs_control;
chip->enable_dma = 0;
- chip->timeout = 1000;
- chip->threshold = SSCR1_RxTresh(1) | SSCR1_TxTresh(1);
+ chip->timeout = TIMOUT_DFLT;
chip->dma_burst_size = drv_data->master_info->enable_dma ?
DCMD_BURST8 : 0;
}
@@ -1224,22 +1229,21 @@ static int setup(struct spi_device *spi)
if (chip_info) {
if (chip_info->cs_control)
chip->cs_control = chip_info->cs_control;
-
- chip->timeout = chip_info->timeout;
-
- chip->threshold = (SSCR1_RxTresh(chip_info->rx_threshold) &
- SSCR1_RFT) |
- (SSCR1_TxTresh(chip_info->tx_threshold) &
- SSCR1_TFT);
-
- chip->enable_dma = chip_info->dma_burst_size != 0
- && drv_data->master_info->enable_dma;
+ if (chip_info->timeout)
+ chip->timeout = chip_info->timeout;
+ if (chip_info->tx_threshold)
+ tx_thres = chip_info->tx_threshold;
+ if (chip_info->rx_threshold)
+ rx_thres = chip_info->rx_threshold;
+ chip->enable_dma = drv_data->master_info->enable_dma;
chip->dma_threshold = 0;
-
if (chip_info->enable_loopback)
chip->cr1 = SSCR1_LBM;
}
+ chip->threshold = (SSCR1_RxTresh(rx_thres) & SSCR1_RFT) |
+ (SSCR1_TxTresh(tx_thres) & SSCR1_TFT);
+
/* set dma burst and threshold outside of chip_info path so that if
* chip_info goes away after setting chip->enable_dma, the
* burst and threshold can still respond to changes in bits_per_word */
@@ -1268,17 +1272,19 @@ static int setup(struct spi_device *spi)
/* NOTE: PXA25x_SSP _could_ use external clocking ... */
if (drv_data->ssp_type != PXA25x_SSP)
- dev_dbg(&spi->dev, "%d bits/word, %ld Hz, mode %d\n",
+ dev_dbg(&spi->dev, "%d bits/word, %ld Hz, mode %d, %s\n",
spi->bits_per_word,
clk_get_rate(ssp->clk)
/ (1 + ((chip->cr0 & SSCR0_SCR) >> 8)),
- spi->mode & 0x3);
+ spi->mode & 0x3,
+ chip->enable_dma ? "DMA" : "PIO");
else
- dev_dbg(&spi->dev, "%d bits/word, %ld Hz, mode %d\n",
+ dev_dbg(&spi->dev, "%d bits/word, %ld Hz, mode %d, %s\n",
spi->bits_per_word,
- clk_get_rate(ssp->clk)
+ clk_get_rate(ssp->clk) / 2
/ (1 + ((chip->cr0 & SSCR0_SCR) >> 8)),
- spi->mode & 0x3);
+ spi->mode & 0x3,
+ chip->enable_dma ? "DMA" : "PIO");
if (spi->bits_per_word <= 8) {
chip->n_bytes = 1;
@@ -1407,9 +1413,9 @@ static int __init pxa2xx_spi_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct pxa2xx_spi_master *platform_info;
struct spi_master *master;
- struct driver_data *drv_data = NULL;
+ struct driver_data *drv_data;
struct ssp_device *ssp;
- int status = 0;
+ int status;
platform_info = dev->platform_data;
@@ -1422,7 +1428,7 @@ static int __init pxa2xx_spi_probe(struct platform_device *pdev)
/* Allocate master with space for drv_data and null dma buffer */
master = spi_alloc_master(dev, sizeof(struct driver_data) + 16);
if (!master) {
- dev_err(&pdev->dev, "can not alloc spi_master\n");
+ dev_err(&pdev->dev, "cannot alloc spi_master\n");
ssp_free(ssp);
return -ENOMEM;
}
@@ -1458,7 +1464,7 @@ static int __init pxa2xx_spi_probe(struct platform_device *pdev)
status = request_irq(ssp->irq, ssp_int, 0, dev->bus_id, drv_data);
if (status < 0) {
- dev_err(&pdev->dev, "can not get IRQ\n");
+ dev_err(&pdev->dev, "cannot get IRQ %d\n", ssp->irq);
goto out_error_master_alloc;
}
@@ -1498,7 +1504,9 @@ static int __init pxa2xx_spi_probe(struct platform_device *pdev)
/* Load default SSP configuration */
write_SSCR0(0, drv_data->ioaddr);
- write_SSCR1(SSCR1_RxTresh(4) | SSCR1_TxTresh(12), drv_data->ioaddr);
+ write_SSCR1(SSCR1_RxTresh(RX_THRESH_DFLT) |
+ SSCR1_TxTresh(TX_THRESH_DFLT),
+ drv_data->ioaddr);
write_SSCR0(SSCR0_SerClkDiv(2)
| SSCR0_Motorola
| SSCR0_DataSize(8),
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 75e86865234..3734dc9708e 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -660,7 +660,7 @@ int spi_write_then_read(struct spi_device *spi,
int status;
struct spi_message message;
- struct spi_transfer x[2];
+ struct spi_transfer x;
u8 *local_buf;
/* Use preallocated DMA-safe buffer. We can't avoid copying here,
@@ -671,15 +671,9 @@ int spi_write_then_read(struct spi_device *spi,
return -EINVAL;
spi_message_init(&message);
- memset(x, 0, sizeof x);
- if (n_tx) {
- x[0].len = n_tx;
- spi_message_add_tail(&x[0], &message);
- }
- if (n_rx) {
- x[1].len = n_rx;
- spi_message_add_tail(&x[1], &message);
- }
+ memset(&x, 0, sizeof x);
+ x.len = n_tx + n_rx;
+ spi_message_add_tail(&x, &message);
/* ... unless someone else is using the pre-allocated buffer */
if (!mutex_trylock(&lock)) {
@@ -690,15 +684,15 @@ int spi_write_then_read(struct spi_device *spi,
local_buf = buf;
memcpy(local_buf, txbuf, n_tx);
- x[0].tx_buf = local_buf;
- x[1].rx_buf = local_buf + n_tx;
+ x.tx_buf = local_buf;
+ x.rx_buf = local_buf;
/* do the i/o */
status = spi_sync(spi, &message);
if (status == 0)
- memcpy(rxbuf, x[1].rx_buf, n_rx);
+ memcpy(rxbuf, x.rx_buf + n_tx, n_rx);
- if (x[0].tx_buf == buf)
+ if (x.tx_buf == buf)
mutex_unlock(&lock);
else
kfree(local_buf);
@@ -744,5 +738,5 @@ err0:
* driver registration) _could_ be dynamically linked (modular) ... costs
* include needing to have boardinfo data structures be much more public.
*/
-subsys_initcall(spi_init);
+postcore_initcall(spi_init);
diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index 3eb414b84a9..c252cbac00f 100644
--- a/drivers/spi/spi_s3c24xx.c
+++ b/drivers/spi/spi_s3c24xx.c
@@ -247,6 +247,9 @@ static void s3c24xx_spi_initialsetup(struct s3c24xx_spi *hw)
writeb(0xff, hw->regs + S3C2410_SPPRE);
writeb(SPPIN_DEFAULT, hw->regs + S3C2410_SPPIN);
writeb(SPCON_DEFAULT, hw->regs + S3C2410_SPCON);
+
+ if (hw->pdata && hw->pdata->gpio_setup)
+ hw->pdata->gpio_setup(hw->pdata, 1);
}
static int __init s3c24xx_spi_probe(struct platform_device *pdev)
@@ -412,6 +415,9 @@ static int s3c24xx_spi_suspend(struct platform_device *pdev, pm_message_t msg)
{
struct s3c24xx_spi *hw = platform_get_drvdata(pdev);
+ if (hw->pdata && hw->pdata->gpio_setup)
+ hw->pdata->gpio_setup(hw->pdata, 0);
+
clk_disable(hw->clk);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-12 11:28:42 +0000