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Merge remote-tracking branch 'spi/topic/pxa' into spi-next

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This commit is contained in:
Mark Brown 2013-06-26 16:21:03 +01:00
commit 7e016d146f
2 changed files with 10 additions and 38 deletions
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11
drivers/spi/spi-pxa2xx-dma.c
View File

@ -327,22 +327,23 @@ void pxa2xx_spi_dma_start(struct driver_data *drv_data)
int pxa2xx_spi_dma_setup(struct driver_data *drv_data)
{
struct pxa2xx_spi_master *pdata = drv_data->master_info;
struct device *dev = &drv_data->pdev->dev;
dma_cap_mask_t mask;
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
drv_data->dummy = devm_kzalloc(&drv_data->pdev->dev, SZ_2K, GFP_KERNEL);
drv_data->dummy = devm_kzalloc(dev, SZ_2K, GFP_KERNEL);
if (!drv_data->dummy)
return -ENOMEM;
drv_data->tx_chan = dma_request_channel(mask, pxa2xx_spi_dma_filter,
pdata);
drv_data->tx_chan = dma_request_slave_channel_compat(mask,
pxa2xx_spi_dma_filter, pdata, dev, "tx");
if (!drv_data->tx_chan)
return -ENODEV;
drv_data->rx_chan = dma_request_channel(mask, pxa2xx_spi_dma_filter,
pdata);
drv_data->rx_chan = dma_request_slave_channel_compat(mask,
pxa2xx_spi_dma_filter, pdata, dev, "rx");
if (!drv_data->rx_chan) {
dma_release_channel(drv_data->tx_chan);
drv_data->tx_chan = NULL;

37
drivers/spi/spi-pxa2xx.c
View File

@ -1022,32 +1022,10 @@ static void cleanup(struct spi_device *spi)
}
#ifdef CONFIG_ACPI
static int pxa2xx_spi_acpi_add_dma(struct acpi_resource *res, void *data)
{
struct pxa2xx_spi_master *pdata = data;
if (res->type == ACPI_RESOURCE_TYPE_FIXED_DMA) {
const struct acpi_resource_fixed_dma *dma;
dma = &res->data.fixed_dma;
if (pdata->tx_slave_id < 0) {
pdata->tx_slave_id = dma->request_lines;
pdata->tx_chan_id = dma->channels;
} else if (pdata->rx_slave_id < 0) {
pdata->rx_slave_id = dma->request_lines;
pdata->rx_chan_id = dma->channels;
}
}
/* Tell the ACPI core to skip this resource */
return 1;
}
static struct pxa2xx_spi_master *
pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
{
struct pxa2xx_spi_master *pdata;
struct list_head resource_list;
struct acpi_device *adev;
struct ssp_device *ssp;
struct resource *res;
@ -1073,7 +1051,7 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
ssp->phys_base = res->start;
ssp->mmio_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(ssp->mmio_base))
return PTR_ERR(ssp->mmio_base);
return NULL;
ssp->clk = devm_clk_get(&pdev->dev, NULL);
ssp->irq = platform_get_irq(pdev, 0);
@ -1085,15 +1063,7 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
ssp->port_id = devid;
pdata->num_chipselect = 1;
pdata->rx_slave_id = -1;
pdata->tx_slave_id = -1;
INIT_LIST_HEAD(&resource_list);
acpi_dev_get_resources(adev, &resource_list, pxa2xx_spi_acpi_add_dma,
pdata);
acpi_dev_free_resource_list(&resource_list);
pdata->enable_dma = pdata->rx_slave_id >= 0 && pdata->tx_slave_id >= 0;
pdata->enable_dma = true;
return pdata;
}
@ -1101,6 +1071,7 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev)
static struct acpi_device_id pxa2xx_spi_acpi_match[] = {
{ "INT33C0", 0 },
{ "INT33C1", 0 },
{ "80860F0E", 0 },
{ },
};
MODULE_DEVICE_TABLE(acpi, pxa2xx_spi_acpi_match);
@ -1198,7 +1169,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
if (platform_info->enable_dma) {
status = pxa2xx_spi_dma_setup(drv_data);
if (status) {
dev_warn(dev, "failed to setup DMA, using PIO\n");
dev_dbg(dev, "no DMA channels available, using PIO\n");
platform_info->enable_dma = false;
}
}