#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/gpio.h>
+#include <linux/slab.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/delay.h>
#include <mach/dma.h>
-#include <mach/regs-ssp.h>
-#include <mach/ssp.h>
+#include <plat/ssp.h>
#include <mach/pxa2xx_spi.h>
MODULE_AUTHOR("Stephen Street");
struct chip_data *chip = drv_data->cur_chip;
if (chip->cs_control) {
- chip->cs_control(PXA2XX_CS_ASSERT);
+ chip->cs_control(PXA2XX_CS_DEASSERT);
return;
}
while (read_SSSR(reg) & SSSR_RNE) {
read_SSDR(reg);
}
- } while ((read_SSSR(reg) & SSSR_BSY) && limit--);
+ } while ((read_SSSR(reg) & SSSR_BSY) && --limit);
write_SSSR(SSSR_ROR, reg);
return limit;
{
unsigned long limit = loops_per_jiffy << 1;
- while ((read_SSSR(ioaddr) & SSSR_BSY) && limit--)
+ while ((read_SSSR(ioaddr) & SSSR_BSY) && --limit)
cpu_relax();
return limit;
{
unsigned long limit = loops_per_jiffy << 1;
- while (!(DCSR(channel) & DCSR_STOPSTATE) && limit--)
+ while (!(DCSR(channel) & DCSR_STOPSTATE) && --limit)
cpu_relax();
return limit;
return 0;
}
-/* the spi->mode bits understood by this driver: */
-#define MODEBITS (SPI_CPOL | SPI_CPHA)
-
static int setup_cs(struct spi_device *spi, struct chip_data *chip,
struct pxa2xx_spi_chip *chip_info)
{
uint tx_thres = TX_THRESH_DFLT;
uint rx_thres = RX_THRESH_DFLT;
- if (!spi->bits_per_word)
- spi->bits_per_word = 8;
-
if (drv_data->ssp_type != PXA25x_SSP
&& (spi->bits_per_word < 4 || spi->bits_per_word > 32)) {
dev_err(&spi->dev, "failed setup: ssp_type=%d, bits/wrd=%d "
return -EINVAL;
}
- if (spi->mode & ~MODEBITS) {
- dev_dbg(&spi->dev, "setup: unsupported mode bits %x\n",
- spi->mode & ~MODEBITS);
- return -EINVAL;
- }
-
/* Only alloc on first setup */
chip = spi_get_ctldata(spi);
if (!chip) {
/* 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, %s\n",
- spi->bits_per_word,
- clk_get_rate(ssp->clk)
- / (1 + ((chip->cr0 & SSCR0_SCR) >> 8)),
- spi->mode & 0x3,
- chip->enable_dma ? "DMA" : "PIO");
+ dev_dbg(&spi->dev, "%ld Hz actual, %s\n",
+ clk_get_rate(ssp->clk)
+ / (1 + ((chip->cr0 & SSCR0_SCR(0xfff)) >> 8)),
+ chip->enable_dma ? "DMA" : "PIO");
else
- dev_dbg(&spi->dev, "%d bits/word, %ld Hz, mode %d, %s\n",
- spi->bits_per_word,
- clk_get_rate(ssp->clk) / 2
- / (1 + ((chip->cr0 & SSCR0_SCR) >> 8)),
- spi->mode & 0x3,
- chip->enable_dma ? "DMA" : "PIO");
+ dev_dbg(&spi->dev, "%ld Hz actual, %s\n",
+ clk_get_rate(ssp->clk) / 2
+ / (1 + ((chip->cr0 & SSCR0_SCR(0x0ff)) >> 8)),
+ chip->enable_dma ? "DMA" : "PIO");
if (spi->bits_per_word <= 8) {
chip->n_bytes = 1;
{
struct chip_data *chip = spi_get_ctldata(spi);
+ if (!chip)
+ return;
+
if (gpio_is_valid(chip->gpio_cs))
gpio_free(chip->gpio_cs);
platform_info = dev->platform_data;
- ssp = ssp_request(pdev->id, pdev->name);
+ ssp = pxa_ssp_request(pdev->id, pdev->name);
if (ssp == NULL) {
dev_err(&pdev->dev, "failed to request SSP%d\n", pdev->id);
return -ENODEV;
master = spi_alloc_master(dev, sizeof(struct driver_data) + 16);
if (!master) {
dev_err(&pdev->dev, "cannot alloc spi_master\n");
- ssp_free(ssp);
+ pxa_ssp_free(ssp);
return -ENOMEM;
}
drv_data = spi_master_get_devdata(master);
drv_data->pdev = pdev;
drv_data->ssp = ssp;
+ /* the spi->mode bits understood by this driver: */
+ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
+
master->bus_num = pdev->id;
master->num_chipselect = platform_info->num_chipselect;
master->dma_alignment = DMA_ALIGNMENT;
write_SSCR1(SSCR1_RxTresh(RX_THRESH_DFLT) |
SSCR1_TxTresh(TX_THRESH_DFLT),
drv_data->ioaddr);
- write_SSCR0(SSCR0_SerClkDiv(2)
+ write_SSCR0(SSCR0_SCR(2)
| SSCR0_Motorola
| SSCR0_DataSize(8),
drv_data->ioaddr);
out_error_master_alloc:
spi_master_put(master);
- ssp_free(ssp);
+ pxa_ssp_free(ssp);
return status;
}
free_irq(ssp->irq, drv_data);
/* Release SSP */
- ssp_free(ssp);
+ pxa_ssp_free(ssp);
/* Disconnect from the SPI framework */
spi_unregister_master(drv_data->master);
}
#ifdef CONFIG_PM
-
-static int pxa2xx_spi_suspend(struct platform_device *pdev, pm_message_t state)
+static int pxa2xx_spi_suspend(struct device *dev)
{
- struct driver_data *drv_data = platform_get_drvdata(pdev);
+ struct driver_data *drv_data = dev_get_drvdata(dev);
struct ssp_device *ssp = drv_data->ssp;
int status = 0;
return 0;
}
-static int pxa2xx_spi_resume(struct platform_device *pdev)
+static int pxa2xx_spi_resume(struct device *dev)
{
- struct driver_data *drv_data = platform_get_drvdata(pdev);
+ struct driver_data *drv_data = dev_get_drvdata(dev);
struct ssp_device *ssp = drv_data->ssp;
int status = 0;
+ if (drv_data->rx_channel != -1)
+ DRCMR(drv_data->ssp->drcmr_rx) =
+ DRCMR_MAPVLD | drv_data->rx_channel;
+ if (drv_data->tx_channel != -1)
+ DRCMR(drv_data->ssp->drcmr_tx) =
+ DRCMR_MAPVLD | drv_data->tx_channel;
+
/* Enable the SSP clock */
clk_enable(ssp->clk);
/* Start the queue running */
status = start_queue(drv_data);
if (status != 0) {
- dev_err(&pdev->dev, "problem starting queue (%d)\n", status);
+ dev_err(dev, "problem starting queue (%d)\n", status);
return status;
}
return 0;
}
-#else
-#define pxa2xx_spi_suspend NULL
-#define pxa2xx_spi_resume NULL
-#endif /* CONFIG_PM */
+
+static const struct dev_pm_ops pxa2xx_spi_pm_ops = {
+ .suspend = pxa2xx_spi_suspend,
+ .resume = pxa2xx_spi_resume,
+};
+#endif
static struct platform_driver driver = {
.driver = {
- .name = "pxa2xx-spi",
- .owner = THIS_MODULE,
+ .name = "pxa2xx-spi",
+ .owner = THIS_MODULE,
+#ifdef CONFIG_PM
+ .pm = &pxa2xx_spi_pm_ops,
+#endif
},
.remove = pxa2xx_spi_remove,
.shutdown = pxa2xx_spi_shutdown,
- .suspend = pxa2xx_spi_suspend,
- .resume = pxa2xx_spi_resume,
};
static int __init pxa2xx_spi_init(void)
{
return platform_driver_probe(&driver, pxa2xx_spi_probe);
}
-module_init(pxa2xx_spi_init);
+subsys_initcall(pxa2xx_spi_init);
static void __exit pxa2xx_spi_exit(void)
{
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff