diff options
Diffstat (limited to 'drivers/mtd/spi-nor/controllers/intel-spi-pci.c')
| -rw-r--r-- | drivers/mtd/spi-nor/controllers/intel-spi-pci.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/mtd/spi-nor/controllers/intel-spi-pci.c b/drivers/mtd/spi-nor/controllers/intel-spi-pci.c index 555fe55d14ae..8a3c1f3c2d2e 100644 --- a/drivers/mtd/spi-nor/controllers/intel-spi-pci.c +++ b/drivers/mtd/spi-nor/controllers/intel-spi-pci.c @@ -16,12 +16,30 @@ #define BCR 0xdc #define BCR_WPD BIT(0) +static bool intel_spi_pci_set_writeable(void __iomem *base, void *data) +{ + struct pci_dev *pdev = data; + u32 bcr; + + /* Try to make the chip read/write */ + pci_read_config_dword(pdev, BCR, &bcr); + if (!(bcr & BCR_WPD)) { + bcr |= BCR_WPD; + pci_write_config_dword(pdev, BCR, bcr); + pci_read_config_dword(pdev, BCR, &bcr); + } + + return bcr & BCR_WPD; +} + static const struct intel_spi_boardinfo bxt_info = { .type = INTEL_SPI_BXT, + .set_writeable = intel_spi_pci_set_writeable, }; static const struct intel_spi_boardinfo cnl_info = { .type = INTEL_SPI_CNL, + .set_writeable = intel_spi_pci_set_writeable, }; static int intel_spi_pci_probe(struct pci_dev *pdev, @@ -29,7 +47,6 @@ static int intel_spi_pci_probe(struct pci_dev *pdev, { struct intel_spi_boardinfo *info; struct intel_spi *ispi; - u32 bcr; int ret; ret = pcim_enable_device(pdev); @@ -41,15 +58,7 @@ static int intel_spi_pci_probe(struct pci_dev *pdev, if (!info) return -ENOMEM; - /* Try to make the chip read/write */ - pci_read_config_dword(pdev, BCR, &bcr); - if (!(bcr & BCR_WPD)) { - bcr |= BCR_WPD; - pci_write_config_dword(pdev, BCR, bcr); - pci_read_config_dword(pdev, BCR, &bcr); - } - info->writeable = !!(bcr & BCR_WPD); - + info->data = pdev; ispi = intel_spi_probe(&pdev->dev, &pdev->resource[0], info); if (IS_ERR(ispi)) return PTR_ERR(ispi); |