diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 7293d6d875c5..2c9fa409d2bf 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -97,6 +98,15 @@ static const struct lpss_config lpss_platforms[] = { .tx_threshold_lo = 160, .tx_threshold_hi = 224, }, + { /* LPSS_SPT_SSP */ + .offset = 0x200, + .reg_general = -1, + .reg_ssp = 0x20, + .reg_cs_ctrl = 0x24, + .rx_threshold = 1, + .tx_threshold_lo = 32, + .tx_threshold_hi = 56, + }, }; static inline const struct lpss_config @@ -110,6 +120,7 @@ static bool is_lpss_ssp(const struct driver_data *drv_data) switch (drv_data->ssp_type) { case LPSS_LPT_SSP: case LPSS_BYT_SSP: + case LPSS_SPT_SSP: return true; default: return false; @@ -1107,6 +1118,7 @@ static int setup(struct spi_device *spi) break; case LPSS_LPT_SSP: case LPSS_BYT_SSP: + case LPSS_SPT_SSP: config = lpss_get_config(drv_data); tx_thres = config->tx_threshold_lo; tx_hi_thres = config->tx_threshold_hi; @@ -1276,6 +1288,30 @@ static const struct acpi_device_id pxa2xx_spi_acpi_match[] = { }; MODULE_DEVICE_TABLE(acpi, pxa2xx_spi_acpi_match); +/* + * PCI IDs of compound devices that integrate both host controller and private + * integrated DMA engine. Please note these are not used in module + * autoloading and probing in this module but matching the LPSS SSP type. + */ +static const struct pci_device_id pxa2xx_spi_pci_compound_match[] = { + /* SPT-LP */ + { PCI_VDEVICE(INTEL, 0x9d29), LPSS_SPT_SSP }, + { PCI_VDEVICE(INTEL, 0x9d2a), LPSS_SPT_SSP }, + /* SPT-H */ + { PCI_VDEVICE(INTEL, 0xa129), LPSS_SPT_SSP }, + { PCI_VDEVICE(INTEL, 0xa12a), LPSS_SPT_SSP }, +}; + +static bool pxa2xx_spi_idma_filter(struct dma_chan *chan, void *param) +{ + struct device *dev = param; + + if (dev != chan->device->dev->parent) + return false; + + return true; +} + static struct pxa2xx_spi_master * pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) { @@ -1283,16 +1319,25 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) struct acpi_device *adev; struct ssp_device *ssp; struct resource *res; - const struct acpi_device_id *id; + const struct acpi_device_id *adev_id = NULL; + const struct pci_device_id *pcidev_id = NULL; int devid, type; if (!ACPI_HANDLE(&pdev->dev) || acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev)) return NULL; - id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev); - if (id) - type = (int)id->driver_data; + if (dev_is_pci(pdev->dev.parent)) + pcidev_id = pci_match_id(pxa2xx_spi_pci_compound_match, + to_pci_dev(pdev->dev.parent)); + else + adev_id = acpi_match_device(pdev->dev.driver->acpi_match_table, + &pdev->dev); + + if (adev_id) + type = (int)adev_id->driver_data; + else if (pcidev_id) + type = (int)pcidev_id->driver_data; else return NULL; @@ -1311,6 +1356,12 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) if (IS_ERR(ssp->mmio_base)) return NULL; + if (pcidev_id) { + pdata->tx_param = pdev->dev.parent; + pdata->rx_param = pdev->dev.parent; + pdata->dma_filter = pxa2xx_spi_idma_filter; + } + ssp->clk = devm_clk_get(&pdev->dev, NULL); ssp->irq = platform_get_irq(pdev, 0); ssp->type = type; diff --git a/include/linux/pxa2xx_ssp.h b/include/linux/pxa2xx_ssp.h index 0485bab061fd..92273776bce6 100644 --- a/include/linux/pxa2xx_ssp.h +++ b/include/linux/pxa2xx_ssp.h @@ -197,6 +197,7 @@ enum pxa_ssp_type { QUARK_X1000_SSP, LPSS_LPT_SSP, /* Keep LPSS types sorted with lpss_platforms[] */ LPSS_BYT_SSP, + LPSS_SPT_SSP, }; struct ssp_device {