1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
4 Copyright (C) 2004 - 2009 Felix Fietkau <nbd@openwrt.org>
5 <http://rt2x00.serialmonkey.com>
6
7 */
8
9 /*
10 Module: rt2x00soc
11 Abstract: rt2x00 generic soc device routines.
12 */
13
14 #include <linux/bug.h>
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/slab.h>
19
20 #include "rt2x00.h"
21 #include "rt2x00soc.h"
22
rt2x00soc_free_reg(struct rt2x00_dev * rt2x00dev)23 static void rt2x00soc_free_reg(struct rt2x00_dev *rt2x00dev)
24 {
25 kfree(rt2x00dev->rf);
26 rt2x00dev->rf = NULL;
27
28 kfree(rt2x00dev->eeprom);
29 rt2x00dev->eeprom = NULL;
30
31 iounmap(rt2x00dev->csr.base);
32 }
33
rt2x00soc_alloc_reg(struct rt2x00_dev * rt2x00dev)34 static int rt2x00soc_alloc_reg(struct rt2x00_dev *rt2x00dev)
35 {
36 struct platform_device *pdev = to_platform_device(rt2x00dev->dev);
37 struct resource *res;
38
39 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
40 if (!res)
41 return -ENODEV;
42
43 rt2x00dev->csr.base = ioremap(res->start, resource_size(res));
44 if (!rt2x00dev->csr.base)
45 return -ENOMEM;
46
47 rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
48 if (!rt2x00dev->eeprom)
49 goto exit;
50
51 rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
52 if (!rt2x00dev->rf)
53 goto exit;
54
55 return 0;
56
57 exit:
58 rt2x00_probe_err("Failed to allocate registers\n");
59 rt2x00soc_free_reg(rt2x00dev);
60
61 return -ENOMEM;
62 }
63
rt2x00soc_probe(struct platform_device * pdev,const struct rt2x00_ops * ops)64 int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops)
65 {
66 struct ieee80211_hw *hw;
67 struct rt2x00_dev *rt2x00dev;
68 int retval;
69
70 hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
71 if (!hw) {
72 rt2x00_probe_err("Failed to allocate hardware\n");
73 return -ENOMEM;
74 }
75
76 platform_set_drvdata(pdev, hw);
77
78 rt2x00dev = hw->priv;
79 rt2x00dev->dev = &pdev->dev;
80 rt2x00dev->ops = ops;
81 rt2x00dev->hw = hw;
82 rt2x00dev->irq = platform_get_irq(pdev, 0);
83 rt2x00dev->name = pdev->dev.driver->name;
84
85 rt2x00dev->clk = clk_get(&pdev->dev, NULL);
86 if (IS_ERR(rt2x00dev->clk))
87 rt2x00dev->clk = NULL;
88
89 rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
90
91 retval = rt2x00soc_alloc_reg(rt2x00dev);
92 if (retval)
93 goto exit_free_device;
94
95 retval = rt2x00lib_probe_dev(rt2x00dev);
96 if (retval)
97 goto exit_free_reg;
98
99 return 0;
100
101 exit_free_reg:
102 rt2x00soc_free_reg(rt2x00dev);
103
104 exit_free_device:
105 ieee80211_free_hw(hw);
106
107 return retval;
108 }
109 EXPORT_SYMBOL_GPL(rt2x00soc_probe);
110
rt2x00soc_remove(struct platform_device * pdev)111 int rt2x00soc_remove(struct platform_device *pdev)
112 {
113 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
114 struct rt2x00_dev *rt2x00dev = hw->priv;
115
116 /*
117 * Free all allocated data.
118 */
119 rt2x00lib_remove_dev(rt2x00dev);
120 rt2x00soc_free_reg(rt2x00dev);
121 ieee80211_free_hw(hw);
122
123 return 0;
124 }
125 EXPORT_SYMBOL_GPL(rt2x00soc_remove);
126
127 #ifdef CONFIG_PM
rt2x00soc_suspend(struct platform_device * pdev,pm_message_t state)128 int rt2x00soc_suspend(struct platform_device *pdev, pm_message_t state)
129 {
130 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
131 struct rt2x00_dev *rt2x00dev = hw->priv;
132
133 return rt2x00lib_suspend(rt2x00dev);
134 }
135 EXPORT_SYMBOL_GPL(rt2x00soc_suspend);
136
rt2x00soc_resume(struct platform_device * pdev)137 int rt2x00soc_resume(struct platform_device *pdev)
138 {
139 struct ieee80211_hw *hw = platform_get_drvdata(pdev);
140 struct rt2x00_dev *rt2x00dev = hw->priv;
141
142 return rt2x00lib_resume(rt2x00dev);
143 }
144 EXPORT_SYMBOL_GPL(rt2x00soc_resume);
145 #endif /* CONFIG_PM */
146
147 /*
148 * rt2x00soc module information.
149 */
150 MODULE_AUTHOR(DRV_PROJECT);
151 MODULE_VERSION(DRV_VERSION);
152 MODULE_DESCRIPTION("rt2x00 soc library");
153 MODULE_LICENSE("GPL");
154