This source file includes following definitions.
- spi_pci_probe
- spi_pci_remove
- spi_suspend
- spi_resume
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8 #include <linux/interrupt.h>
9 #include <linux/pci.h>
10 #include <linux/slab.h>
11 #include <linux/spi/spi.h>
12 #include <linux/module.h>
13
14 #include "spi-dw.h"
15
16 #define DRIVER_NAME "dw_spi_pci"
17
18 struct spi_pci_desc {
19 int (*setup)(struct dw_spi *);
20 u16 num_cs;
21 u16 bus_num;
22 u32 max_freq;
23 };
24
25 static struct spi_pci_desc spi_pci_mid_desc_1 = {
26 .setup = dw_spi_mid_init,
27 .num_cs = 5,
28 .bus_num = 0,
29 };
30
31 static struct spi_pci_desc spi_pci_mid_desc_2 = {
32 .setup = dw_spi_mid_init,
33 .num_cs = 2,
34 .bus_num = 1,
35 };
36
37 static struct spi_pci_desc spi_pci_ehl_desc = {
38 .num_cs = 1,
39 .bus_num = -1,
40 .max_freq = 100000000,
41 };
42
43 static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
44 {
45 struct dw_spi *dws;
46 struct spi_pci_desc *desc = (struct spi_pci_desc *)ent->driver_data;
47 int pci_bar = 0;
48 int ret;
49
50 ret = pcim_enable_device(pdev);
51 if (ret)
52 return ret;
53
54 dws = devm_kzalloc(&pdev->dev, sizeof(*dws), GFP_KERNEL);
55 if (!dws)
56 return -ENOMEM;
57
58
59 dws->paddr = pci_resource_start(pdev, pci_bar);
60
61 ret = pcim_iomap_regions(pdev, 1 << pci_bar, pci_name(pdev));
62 if (ret)
63 return ret;
64
65 dws->regs = pcim_iomap_table(pdev)[pci_bar];
66 dws->irq = pdev->irq;
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70
71
72 if (desc) {
73 dws->num_cs = desc->num_cs;
74 dws->bus_num = desc->bus_num;
75 dws->max_freq = desc->max_freq;
76
77 if (desc->setup) {
78 ret = desc->setup(dws);
79 if (ret)
80 return ret;
81 }
82 } else {
83 return -ENODEV;
84 }
85
86 ret = dw_spi_add_host(&pdev->dev, dws);
87 if (ret)
88 return ret;
89
90
91 pci_set_drvdata(pdev, dws);
92
93 dev_info(&pdev->dev, "found PCI SPI controller(ID: %04x:%04x)\n",
94 pdev->vendor, pdev->device);
95
96 return 0;
97 }
98
99 static void spi_pci_remove(struct pci_dev *pdev)
100 {
101 struct dw_spi *dws = pci_get_drvdata(pdev);
102
103 dw_spi_remove_host(dws);
104 }
105
106 #ifdef CONFIG_PM_SLEEP
107 static int spi_suspend(struct device *dev)
108 {
109 struct dw_spi *dws = dev_get_drvdata(dev);
110
111 return dw_spi_suspend_host(dws);
112 }
113
114 static int spi_resume(struct device *dev)
115 {
116 struct dw_spi *dws = dev_get_drvdata(dev);
117
118 return dw_spi_resume_host(dws);
119 }
120 #endif
121
122 static SIMPLE_DEV_PM_OPS(dw_spi_pm_ops, spi_suspend, spi_resume);
123
124 static const struct pci_device_id pci_ids[] = {
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130
131 { PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&spi_pci_mid_desc_1},
132
133 { PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&spi_pci_mid_desc_2},
134
135 { PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&spi_pci_ehl_desc},
136 { PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&spi_pci_ehl_desc},
137 { PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&spi_pci_ehl_desc},
138 { PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&spi_pci_ehl_desc},
139 {},
140 };
141 MODULE_DEVICE_TABLE(pci, pci_ids);
142
143 static struct pci_driver dw_spi_driver = {
144 .name = DRIVER_NAME,
145 .id_table = pci_ids,
146 .probe = spi_pci_probe,
147 .remove = spi_pci_remove,
148 .driver = {
149 .pm = &dw_spi_pm_ops,
150 },
151 };
152
153 module_pci_driver(dw_spi_driver);
154
155 MODULE_AUTHOR("Feng Tang <feng.tang@intel.com>");
156 MODULE_DESCRIPTION("PCI interface driver for DW SPI Core");
157 MODULE_LICENSE("GPL v2");