aboutsummaryrefslogtreecommitdiffstats
path: root/package/kernel/mac80211/patches/552-ahb_of.patch
blob: 8c20b00dd4dea8efaf73b31621788181f13c6191 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
--- a/drivers/net/wireless/ath/ath9k/ahb.c
+++ b/drivers/net/wireless/ath/ath9k/ahb.c
@@ -19,7 +19,15 @@
 #include <linux/nl80211.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include "ath9k.h"
+#include <linux/ath9k_platform.h>
+
+#ifdef CONFIG_OF
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/ar71xx_regs.h>
+#include <linux/mtd/mtd.h>
+#endif
 
 static const struct platform_device_id ath9k_platform_id_table[] = {
 	{
@@ -68,6 +76,235 @@ static const struct ath_bus_ops ath_ahb_
 	.eeprom_read = ath_ahb_eeprom_read,
 };
 
+#ifdef CONFIG_OF
+
+#define QCA955X_DDR_CTL_CONFIG          0x108
+#define QCA955X_DDR_CTL_CONFIG_ACT_WMAC BIT(23)
+
+static int of_get_wifi_cal(struct device_node *np, struct ath9k_platform_data *pdata)
+{
+#ifdef CONFIG_MTD
+	struct device_node *mtd_np = NULL;
+	size_t retlen;
+	int size, ret;
+	struct mtd_info *mtd;
+	const char *part;
+	const __be32 *list;
+	phandle phandle;
+
+	list = of_get_property(np, "mtd-cal-data", &size);
+	if (!list)
+		return 0;
+
+	if (size != (2 * sizeof(*list)))
+		return 1;
+
+	phandle = be32_to_cpup(list++);
+	if (phandle)
+		mtd_np = of_find_node_by_phandle(phandle);
+
+	if (!mtd_np)
+		return 1;
+
+	part = of_get_property(mtd_np, "label", NULL);
+	if (!part)
+		part = mtd_np->name;
+
+	mtd = get_mtd_device_nm(part);
+	if (IS_ERR(mtd))
+		return 1;
+
+	ret = mtd_read(mtd, be32_to_cpup(list), sizeof(pdata->eeprom_data),
+			&retlen, (u8*)pdata->eeprom_data);
+	put_mtd_device(mtd);
+
+#endif
+	return 0;
+}
+
+static int ar913x_wmac_reset(void)
+{
+	ath79_device_reset_set(AR913X_RESET_AMBA2WMAC);
+	mdelay(10);
+
+	ath79_device_reset_clear(AR913X_RESET_AMBA2WMAC);
+	mdelay(10);
+
+	return 0;
+}
+
+static int ar933x_wmac_reset(void)
+{
+	int retries = 20;
+
+	ath79_device_reset_set(AR933X_RESET_WMAC);
+	ath79_device_reset_clear(AR933X_RESET_WMAC);
+
+	while (1) {
+		u32 bootstrap;
+
+		bootstrap = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
+		if ((bootstrap & AR933X_BOOTSTRAP_EEPBUSY) == 0)
+			return 0;
+
+		if (retries-- == 0)
+			break;
+
+		udelay(10000);
+	}
+
+	pr_err("ar933x: WMAC reset timed out");
+	return -ETIMEDOUT;
+}
+
+static int qca955x_wmac_reset(void)
+{
+	int i;
+
+	/* Try to wait for WMAC DDR activity to stop */
+	for (i = 0; i < 10; i++) {
+		if (!(__raw_readl(ath79_ddr_base + QCA955X_DDR_CTL_CONFIG) &
+		    QCA955X_DDR_CTL_CONFIG_ACT_WMAC))
+			break;
+
+		udelay(10);
+	}
+
+	ath79_device_reset_set(QCA955X_RESET_RTC);
+	udelay(10);
+	ath79_device_reset_clear(QCA955X_RESET_RTC);
+	udelay(10);
+
+	return 0;
+}
+
+enum {
+	AR913X_WMAC = 0,
+	AR933X_WMAC,
+	AR934X_WMAC,
+	QCA953X_WMAC,
+	QCA955X_WMAC,
+	QCA956X_WMAC,
+};
+
+static int ar9330_get_soc_revision(void)
+{
+	if (ath79_soc_rev == 1)
+		return ath79_soc_rev;
+
+	return 0;
+}
+
+static int ath79_get_soc_revision(void)
+{
+	return ath79_soc_rev;
+}
+
+static const struct of_ath_ahb_data {
+	u16 dev_id;
+	u32 bootstrap_reg;
+	u32 bootstrap_ref;
+
+	int (*soc_revision)(void);
+	int (*wmac_reset)(void);
+} of_ath_ahb_data[] = {
+	[AR913X_WMAC] = {
+		.dev_id = AR5416_AR9100_DEVID,
+		.wmac_reset = ar913x_wmac_reset,
+
+	},
+	[AR933X_WMAC] = {
+		.dev_id = AR9300_DEVID_AR9330,
+		.bootstrap_reg = AR933X_RESET_REG_BOOTSTRAP,
+		.bootstrap_ref = AR933X_BOOTSTRAP_REF_CLK_40,
+		.soc_revision = ar9330_get_soc_revision,
+		.wmac_reset = ar933x_wmac_reset,
+	},
+	[AR934X_WMAC] = {
+		.dev_id = AR9300_DEVID_AR9340,
+		.bootstrap_reg = AR934X_RESET_REG_BOOTSTRAP,
+		.bootstrap_ref = AR934X_BOOTSTRAP_REF_CLK_40,
+		.soc_revision = ath79_get_soc_revision,
+	},
+	[QCA953X_WMAC] = {
+		.dev_id = AR9300_DEVID_AR953X,
+		.bootstrap_reg = QCA953X_RESET_REG_BOOTSTRAP,
+		.bootstrap_ref = QCA953X_BOOTSTRAP_REF_CLK_40,
+		.soc_revision = ath79_get_soc_revision,
+	},
+	[QCA955X_WMAC] = {
+		.dev_id = AR9300_DEVID_QCA955X,
+		.bootstrap_reg = QCA955X_RESET_REG_BOOTSTRAP,
+		.bootstrap_ref = QCA955X_BOOTSTRAP_REF_CLK_40,
+		.wmac_reset = qca955x_wmac_reset,
+	},
+	[QCA956X_WMAC] = {
+		.dev_id = AR9300_DEVID_QCA956X,
+		.bootstrap_reg = QCA956X_RESET_REG_BOOTSTRAP,
+		.bootstrap_ref = QCA956X_BOOTSTRAP_REF_CLK_40,
+		.soc_revision = ath79_get_soc_revision,
+	},
+};
+
+const struct of_device_id of_ath_ahb_match[] = {
+	{ .compatible = "qca,ar9130-wmac", .data = &of_ath_ahb_data[AR913X_WMAC] },
+	{ .compatible = "qca,ar9330-wmac", .data = &of_ath_ahb_data[AR933X_WMAC] },
+	{ .compatible = "qca,ar9340-wmac", .data = &of_ath_ahb_data[AR934X_WMAC] },
+	{ .compatible = "qca,qca9530-wmac", .data = &of_ath_ahb_data[QCA953X_WMAC] },
+	{ .compatible = "qca,qca9550-wmac", .data = &of_ath_ahb_data[QCA955X_WMAC] },
+	{ .compatible = "qca,qca9560-wmac", .data = &of_ath_ahb_data[QCA956X_WMAC] },
+	{},
+};
+MODULE_DEVICE_TABLE(of, of_ath_ahb_match);
+
+static int of_ath_ahb_probe(struct platform_device *pdev)
+{
+	struct ath9k_platform_data *pdata;
+	const struct of_device_id *match;
+	const struct of_ath_ahb_data *data;
+	u8 led_pin;
+
+	match = of_match_device(of_ath_ahb_match, &pdev->dev);
+	data = (const struct of_ath_ahb_data *)match->data;
+
+	pdata = dev_get_platdata(&pdev->dev);
+
+	if (!of_property_read_u8(pdev->dev.of_node, "qca,led-pin", &led_pin))
+		pdata->led_pin = led_pin;
+	else
+		pdata->led_pin = -1;
+
+	if (of_property_read_bool(pdev->dev.of_node, "qca,disable-2ghz"))
+		pdata->disable_2ghz = true;
+
+	if (of_property_read_bool(pdev->dev.of_node, "qca,disable-5ghz"))
+		pdata->disable_5ghz = true;
+
+	if (of_property_read_bool(pdev->dev.of_node, "qca,tx-gain-buffalo"))
+		pdata->tx_gain_buffalo = true;
+
+	if (data->wmac_reset) {
+		data->wmac_reset();
+		pdata->external_reset = data->wmac_reset;
+	}
+
+	if (data->bootstrap_reg && data->bootstrap_ref) {
+		u32 t = ath79_reset_rr(data->bootstrap_reg);
+		if (t & data->bootstrap_ref)
+			pdata->is_clk_25mhz = false;
+		else
+			pdata->is_clk_25mhz = true;
+	}
+
+	pdata->get_mac_revision = data->soc_revision;
+
+	if (of_get_wifi_cal(pdev->dev.of_node, pdata))
+		dev_err(&pdev->dev, "failed to load calibration data from mtd device\n");
+
+	return data->dev_id;
+}
+#endif
+
 static int ath_ahb_probe(struct platform_device *pdev)
 {
 	void __iomem *mem;
@@ -79,6 +316,17 @@ static int ath_ahb_probe(struct platform
 	int ret = 0;
 	struct ath_hw *ah;
 	char hw_name[64];
+	u16 dev_id;
+
+	if (id)
+		dev_id = id->driver_data;
+
+#ifdef CONFIG_OF
+	if (pdev->dev.of_node)
+		pdev->dev.platform_data = devm_kzalloc(&pdev->dev,
+					sizeof(struct ath9k_platform_data),
+					GFP_KERNEL);
+#endif
 
 	if (!dev_get_platdata(&pdev->dev)) {
 		dev_err(&pdev->dev, "no platform data specified\n");
@@ -121,13 +369,16 @@ static int ath_ahb_probe(struct platform
 	sc->mem = mem;
 	sc->irq = irq;
 
+#ifdef CONFIG_OF
+	dev_id = of_ath_ahb_probe(pdev);
+#endif
 	ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
 	if (ret) {
 		dev_err(&pdev->dev, "request_irq failed\n");
 		goto err_free_hw;
 	}
 
-	ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
+	ret = ath9k_init_device(dev_id, sc, &ath_ahb_bus_ops);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to initialize device\n");
 		goto err_irq;
@@ -158,6 +409,9 @@ static int ath_ahb_remove(struct platfor
 		free_irq(sc->irq, sc);
 		ieee80211_free_hw(sc->hw);
 	}
+#ifdef CONFIG_OF
+	pdev->dev.platform_data = NULL;
+#endif
 
 	return 0;
 }
@@ -167,6 +421,9 @@ static struct platform_driver ath_ahb_dr
 	.remove     = ath_ahb_remove,
 	.driver		= {
 		.name	= "ath9k",
+#ifdef CONFIG_OF
+		.of_match_table = of_ath_ahb_match,
+#endif
 	},
 	.id_table    = ath9k_platform_id_table,
 };
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -25,6 +25,7 @@
 #include <linux/time.h>
 #include <linux/hw_random.h>
 #include <linux/gpio/driver.h>
+#include <linux/reset.h>
 
 #include "common.h"
 #include "debug.h"
@@ -1023,6 +1024,9 @@ struct ath_softc {
 	struct ath_hw *sc_ah;
 	void __iomem *mem;
 	int irq;
+#ifdef CONFIG_OF
+	struct reset_control *reset;
+#endif
 	spinlock_t sc_serial_rw;
 	spinlock_t sc_pm_lock;
 	spinlock_t sc_pcu_lock;