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path: root/drivers/ufs/host/tc-dwc-g210-pci.c
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Diffstat (limited to 'drivers/ufs/host/tc-dwc-g210-pci.c')
-rw-r--r--drivers/ufs/host/tc-dwc-g210-pci.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/drivers/ufs/host/tc-dwc-g210-pci.c b/drivers/ufs/host/tc-dwc-g210-pci.c
new file mode 100644
index 000000000000..92b8ad4b58fe
--- /dev/null
+++ b/drivers/ufs/host/tc-dwc-g210-pci.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Synopsys G210 Test Chip driver
+ *
+ * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Authors: Joao Pinto <jpinto@synopsys.com>
+ */
+
+#include <ufs/ufshcd.h>
+#include "ufshcd-dwc.h"
+#include "tc-dwc-g210.h"
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/pm_runtime.h>
+
+/* Test Chip type expected values */
+#define TC_G210_20BIT 20
+#define TC_G210_40BIT 40
+#define TC_G210_INV 0
+
+static int tc_type = TC_G210_INV;
+module_param(tc_type, int, 0);
+MODULE_PARM_DESC(tc_type, "Test Chip Type (20 = 20-bit, 40 = 40-bit)");
+
+/*
+ * struct ufs_hba_dwc_vops - UFS DWC specific variant operations
+ */
+static struct ufs_hba_variant_ops tc_dwc_g210_pci_hba_vops = {
+ .name = "tc-dwc-g210-pci",
+ .link_startup_notify = ufshcd_dwc_link_startup_notify,
+};
+
+/**
+ * tc_dwc_g210_pci_shutdown - main function to put the controller in reset state
+ * @pdev: pointer to PCI device handle
+ */
+static void tc_dwc_g210_pci_shutdown(struct pci_dev *pdev)
+{
+ ufshcd_shutdown((struct ufs_hba *)pci_get_drvdata(pdev));
+}
+
+/**
+ * tc_dwc_g210_pci_remove - de-allocate PCI/SCSI host and host memory space
+ * data structure memory
+ * @pdev: pointer to PCI handle
+ */
+static void tc_dwc_g210_pci_remove(struct pci_dev *pdev)
+{
+ struct ufs_hba *hba = pci_get_drvdata(pdev);
+
+ pm_runtime_forbid(&pdev->dev);
+ pm_runtime_get_noresume(&pdev->dev);
+ ufshcd_remove(hba);
+}
+
+/**
+ * tc_dwc_g210_pci_probe - probe routine of the driver
+ * @pdev: pointer to PCI device handle
+ * @id: PCI device id
+ *
+ * Returns 0 on success, non-zero value on failure
+ */
+static int
+tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct ufs_hba *hba;
+ void __iomem *mmio_base;
+ int err;
+
+ /* Check Test Chip type and set the specific setup routine */
+ if (tc_type == TC_G210_20BIT) {
+ tc_dwc_g210_pci_hba_vops.phy_initialization =
+ tc_dwc_g210_config_20_bit;
+ } else if (tc_type == TC_G210_40BIT) {
+ tc_dwc_g210_pci_hba_vops.phy_initialization =
+ tc_dwc_g210_config_40_bit;
+ } else {
+ dev_err(&pdev->dev, "test chip version not specified\n");
+ return -EPERM;
+ }
+
+ err = pcim_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "pcim_enable_device failed\n");
+ return err;
+ }
+
+ pci_set_master(pdev);
+
+ err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD);
+ if (err < 0) {
+ dev_err(&pdev->dev, "request and iomap failed\n");
+ return err;
+ }
+
+ mmio_base = pcim_iomap_table(pdev)[0];
+
+ err = ufshcd_alloc_host(&pdev->dev, &hba);
+ if (err) {
+ dev_err(&pdev->dev, "Allocation failed\n");
+ return err;
+ }
+
+ hba->vops = &tc_dwc_g210_pci_hba_vops;
+
+ err = ufshcd_init(hba, mmio_base, pdev->irq);
+ if (err) {
+ dev_err(&pdev->dev, "Initialization failed\n");
+ return err;
+ }
+
+ pm_runtime_put_noidle(&pdev->dev);
+ pm_runtime_allow(&pdev->dev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+ SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
+ .prepare = ufshcd_suspend_prepare,
+ .complete = ufshcd_resume_complete,
+};
+
+static const struct pci_device_id tc_dwc_g210_pci_tbl[] = {
+ { PCI_VENDOR_ID_SYNOPSYS, 0xB101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+ { PCI_VENDOR_ID_SYNOPSYS, 0xB102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+ { } /* terminate list */
+};
+
+MODULE_DEVICE_TABLE(pci, tc_dwc_g210_pci_tbl);
+
+static struct pci_driver tc_dwc_g210_pci_driver = {
+ .name = "tc-dwc-g210-pci",
+ .id_table = tc_dwc_g210_pci_tbl,
+ .probe = tc_dwc_g210_pci_probe,
+ .remove = tc_dwc_g210_pci_remove,
+ .shutdown = tc_dwc_g210_pci_shutdown,
+ .driver = {
+ .pm = &tc_dwc_g210_pci_pm_ops
+ },
+};
+
+module_pci_driver(tc_dwc_g210_pci_driver);
+
+MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
+MODULE_DESCRIPTION("Synopsys Test Chip G210 PCI glue driver");
+MODULE_LICENSE("Dual BSD/GPL");