This source file includes following definitions.
- enetc_ptp_probe
- enetc_ptp_remove
1
2
3
4 #include <linux/module.h>
5 #include <linux/of.h>
6 #include <linux/fsl/ptp_qoriq.h>
7
8 #include "enetc.h"
9
10 int enetc_phc_index = -1;
11 EXPORT_SYMBOL(enetc_phc_index);
12
13 static struct ptp_clock_info enetc_ptp_caps = {
14 .owner = THIS_MODULE,
15 .name = "ENETC PTP clock",
16 .max_adj = 512000,
17 .n_alarm = 0,
18 .n_ext_ts = 2,
19 .n_per_out = 0,
20 .n_pins = 0,
21 .pps = 1,
22 .adjfine = ptp_qoriq_adjfine,
23 .adjtime = ptp_qoriq_adjtime,
24 .gettime64 = ptp_qoriq_gettime,
25 .settime64 = ptp_qoriq_settime,
26 .enable = ptp_qoriq_enable,
27 };
28
29 static int enetc_ptp_probe(struct pci_dev *pdev,
30 const struct pci_device_id *ent)
31 {
32 struct ptp_qoriq *ptp_qoriq;
33 void __iomem *base;
34 int err, len, n;
35
36 if (pdev->dev.of_node && !of_device_is_available(pdev->dev.of_node)) {
37 dev_info(&pdev->dev, "device is disabled, skipping\n");
38 return -ENODEV;
39 }
40
41 err = pci_enable_device_mem(pdev);
42 if (err) {
43 dev_err(&pdev->dev, "device enable failed\n");
44 return err;
45 }
46
47
48 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
49 if (err) {
50 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
51 if (err) {
52 dev_err(&pdev->dev,
53 "DMA configuration failed: 0x%x\n", err);
54 goto err_dma;
55 }
56 }
57
58 err = pci_request_mem_regions(pdev, KBUILD_MODNAME);
59 if (err) {
60 dev_err(&pdev->dev, "pci_request_regions failed err=%d\n", err);
61 goto err_pci_mem_reg;
62 }
63
64 pci_set_master(pdev);
65
66 ptp_qoriq = kzalloc(sizeof(*ptp_qoriq), GFP_KERNEL);
67 if (!ptp_qoriq) {
68 err = -ENOMEM;
69 goto err_alloc_ptp;
70 }
71
72 len = pci_resource_len(pdev, ENETC_BAR_REGS);
73
74 base = ioremap(pci_resource_start(pdev, ENETC_BAR_REGS), len);
75 if (!base) {
76 err = -ENXIO;
77 dev_err(&pdev->dev, "ioremap() failed\n");
78 goto err_ioremap;
79 }
80
81
82 n = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
83 if (n != 1) {
84 err = -EPERM;
85 goto err_irq_vectors;
86 }
87
88 ptp_qoriq->irq = pci_irq_vector(pdev, 0);
89
90 err = request_irq(ptp_qoriq->irq, ptp_qoriq_isr, 0, DRIVER, ptp_qoriq);
91 if (err) {
92 dev_err(&pdev->dev, "request_irq() failed!\n");
93 goto err_irq;
94 }
95
96 ptp_qoriq->dev = &pdev->dev;
97
98 err = ptp_qoriq_init(ptp_qoriq, base, &enetc_ptp_caps);
99 if (err)
100 goto err_no_clock;
101
102 enetc_phc_index = ptp_qoriq->phc_index;
103 pci_set_drvdata(pdev, ptp_qoriq);
104
105 return 0;
106
107 err_no_clock:
108 free_irq(ptp_qoriq->irq, ptp_qoriq);
109 err_irq:
110 pci_free_irq_vectors(pdev);
111 err_irq_vectors:
112 iounmap(base);
113 err_ioremap:
114 kfree(ptp_qoriq);
115 err_alloc_ptp:
116 pci_release_mem_regions(pdev);
117 err_pci_mem_reg:
118 err_dma:
119 pci_disable_device(pdev);
120
121 return err;
122 }
123
124 static void enetc_ptp_remove(struct pci_dev *pdev)
125 {
126 struct ptp_qoriq *ptp_qoriq = pci_get_drvdata(pdev);
127
128 enetc_phc_index = -1;
129 ptp_qoriq_free(ptp_qoriq);
130 pci_free_irq_vectors(pdev);
131 kfree(ptp_qoriq);
132
133 pci_release_mem_regions(pdev);
134 pci_disable_device(pdev);
135 }
136
137 static const struct pci_device_id enetc_ptp_id_table[] = {
138 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PTP) },
139 { 0, }
140 };
141 MODULE_DEVICE_TABLE(pci, enetc_ptp_id_table);
142
143 static struct pci_driver enetc_ptp_driver = {
144 .name = KBUILD_MODNAME,
145 .id_table = enetc_ptp_id_table,
146 .probe = enetc_ptp_probe,
147 .remove = enetc_ptp_remove,
148 };
149 module_pci_driver(enetc_ptp_driver);
150
151 MODULE_DESCRIPTION("ENETC PTP clock driver");
152 MODULE_LICENSE("Dual BSD/GPL");