add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/drivers/clk/imx/clk.c
..
..
@@ -1,14 +1,50 @@
1
1
 // SPDX-License-Identifier: GPL-2.0
2
+#include <linux/bits.h>
2
3
 #include <linux/clk.h>
4
+#include <linux/clk-provider.h>
3
5
 #include <linux/err.h>
6
+#include <linux/io.h>
7
+#include <linux/module.h>
4
8
 #include <linux/of.h>
5
9
 #include <linux/slab.h>
6
10
 #include <linux/spinlock.h>
7
11
 #include "clk.h"
8
12
 
9
-DEFINE_SPINLOCK(imx_ccm_lock);
13
+#define CCM_CCDR			0x4
14
+#define CCDR_MMDC_CH0_MASK		BIT(17)
15
+#define CCDR_MMDC_CH1_MASK		BIT(16)
10
16
 
11
-void __init imx_check_clocks(struct clk *clks[], unsigned int count)
17
+DEFINE_SPINLOCK(imx_ccm_lock);
18
+EXPORT_SYMBOL_GPL(imx_ccm_lock);
19
+
20
+void imx_unregister_clocks(struct clk *clks[], unsigned int count)
21
+{
22
+	unsigned int i;
23
+
24
+	for (i = 0; i < count; i++)
25
+		clk_unregister(clks[i]);
26
+}
27
+
28
+void imx_unregister_hw_clocks(struct clk_hw *hws[], unsigned int count)
29
+{
30
+	unsigned int i;
31
+
32
+	for (i = 0; i < count; i++)
33
+		clk_hw_unregister(hws[i]);
34
+}
35
+EXPORT_SYMBOL_GPL(imx_unregister_hw_clocks);
36
+
37
+void imx_mmdc_mask_handshake(void __iomem *ccm_base,
38
+				    unsigned int chn)
39
+{
40
+	unsigned int reg;
41
+
42
+	reg = readl_relaxed(ccm_base + CCM_CCDR);
43
+	reg |= chn == 0 ? CCDR_MMDC_CH0_MASK : CCDR_MMDC_CH1_MASK;
44
+	writel_relaxed(reg, ccm_base + CCM_CCDR);
45
+}
46
+
47
+void imx_check_clocks(struct clk *clks[], unsigned int count)
12
48
 {
13
49
 	unsigned i;
14
50
 
..
..
@@ -18,7 +54,18 @@
18
54
 			       i, PTR_ERR(clks[i]));
19
55
 }
20
56
 
21
-static struct clk * __init imx_obtain_fixed_clock_from_dt(const char *name)
57
+void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count)
58
+{
59
+	unsigned int i;
60
+
61
+	for (i = 0; i < count; i++)
62
+		if (IS_ERR(clks[i]))
63
+			pr_err("i.MX clk %u: register failed with %ld\n",
64
+			       i, PTR_ERR(clks[i]));
65
+}
66
+EXPORT_SYMBOL_GPL(imx_check_clk_hws);
67
+
68
+static struct clk *imx_obtain_fixed_clock_from_dt(const char *name)
22
69
 {
23
70
 	struct of_phandle_args phandle;
24
71
 	struct clk *clk = ERR_PTR(-ENODEV);
..
..
@@ -38,7 +85,7 @@
38
85
 	return clk;
39
86
 }
40
87
 
41
-struct clk * __init imx_obtain_fixed_clock(
88
+struct clk *imx_obtain_fixed_clock(
42
89
 			const char *name, unsigned long rate)
43
90
 {
44
91
 	struct clk *clk;
..
..
@@ -48,6 +95,30 @@
48
95
 		clk = imx_clk_fixed(name, rate);
49
96
 	return clk;
50
97
 }
98
+
99
+struct clk_hw *imx_obtain_fixed_clock_hw(
100
+			const char *name, unsigned long rate)
101
+{
102
+	struct clk *clk;
103
+
104
+	clk = imx_obtain_fixed_clock_from_dt(name);
105
+	if (IS_ERR(clk))
106
+		clk = imx_clk_fixed(name, rate);
107
+	return __clk_get_hw(clk);
108
+}
109
+
110
+struct clk_hw * imx_obtain_fixed_clk_hw(struct device_node *np,
111
+					const char *name)
112
+{
113
+	struct clk *clk;
114
+
115
+	clk = of_clk_get_by_name(np, name);
116
+	if (IS_ERR(clk))
117
+		return ERR_PTR(-ENOENT);
118
+
119
+	return __clk_get_hw(clk);
120
+}
121
+EXPORT_SYMBOL_GPL(imx_obtain_fixed_clk_hw);
51
122
 
52
123
 /*
53
124
  * This fixups the register CCM_CSCMR1 write value.
..
..
@@ -75,8 +146,11 @@
75
146
 	return;
76
147
 }
77
148
 
78
-static int imx_keep_uart_clocks __initdata;
79
-static struct clk ** const *imx_uart_clocks __initdata;
149
+#ifndef MODULE
150
+
151
+static bool imx_keep_uart_clocks;
152
+static int imx_enabled_uart_clocks;
153
+static struct clk **imx_uart_clocks;
80
154
 
81
155
 static int __init imx_keep_uart_clocks_param(char *str)
82
156
 {
..
..
@@ -89,26 +163,51 @@
89
163
 __setup_param("earlyprintk", imx_keep_uart_earlyprintk,
90
164
 	      imx_keep_uart_clocks_param, 0);
91
165
 
92
-void __init imx_register_uart_clocks(struct clk ** const clks[])
166
+void imx_register_uart_clocks(unsigned int clk_count)
93
167
 {
168
+	imx_enabled_uart_clocks = 0;
169
+
170
+/* i.MX boards use device trees now.  For build tests without CONFIG_OF, do nothing */
171
+#ifdef CONFIG_OF
94
172
 	if (imx_keep_uart_clocks) {
95
173
 		int i;
96
174
 
97
-		imx_uart_clocks = clks;
98
-		for (i = 0; imx_uart_clocks[i]; i++)
99
-			clk_prepare_enable(*imx_uart_clocks[i]);
175
+		imx_uart_clocks = kcalloc(clk_count, sizeof(struct clk *), GFP_KERNEL);
176
+
177
+		if (!of_stdout)
178
+			return;
179
+
180
+		for (i = 0; i < clk_count; i++) {
181
+			imx_uart_clocks[imx_enabled_uart_clocks] = of_clk_get(of_stdout, i);
182
+
183
+			/* Stop if there are no more of_stdout references */
184
+			if (IS_ERR(imx_uart_clocks[imx_enabled_uart_clocks]))
185
+				return;
186
+
187
+			/* Only enable the clock if it's not NULL */
188
+			if (imx_uart_clocks[imx_enabled_uart_clocks])
189
+				clk_prepare_enable(imx_uart_clocks[imx_enabled_uart_clocks++]);
190
+		}
100
191
 	}
192
+#endif
101
193
 }
102
194
 
103
195
 static int __init imx_clk_disable_uart(void)
104
196
 {
105
-	if (imx_keep_uart_clocks && imx_uart_clocks) {
197
+	if (imx_keep_uart_clocks && imx_enabled_uart_clocks) {
106
198
 		int i;
107
199
 
108
-		for (i = 0; imx_uart_clocks[i]; i++)
109
-			clk_disable_unprepare(*imx_uart_clocks[i]);
200
+		for (i = 0; i < imx_enabled_uart_clocks; i++) {
201
+			clk_disable_unprepare(imx_uart_clocks[i]);
202
+			clk_put(imx_uart_clocks[i]);
203
+		}
110
204
 	}
205
+
206
+	kfree(imx_uart_clocks);
111
207
 
112
208
 	return 0;
113
209
 }
114
210
 late_initcall_sync(imx_clk_disable_uart);
211
+#endif
212
+
213
+MODULE_LICENSE("GPL v2");