147bbcbfeSAndra Danciu // SPDX-License-Identifier: GPL-2.0+
247bbcbfeSAndra Danciu //
347bbcbfeSAndra Danciu // Copyright 2012 Freescale Semiconductor, Inc.
447bbcbfeSAndra Danciu // Copyright 2012 Linaro Ltd.
547bbcbfeSAndra Danciu // Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
647bbcbfeSAndra Danciu //
747bbcbfeSAndra Danciu // Initial development of this code was funded by
81ce8f643SAlexander A. Klimov // Phytec Messtechnik GmbH, https://www.phytec.de
9a23dc694SShawn Guo
10a23dc694SShawn Guo #include <linux/clk.h>
11a23dc694SShawn Guo #include <linux/debugfs.h>
12a23dc694SShawn Guo #include <linux/err.h>
13a23dc694SShawn Guo #include <linux/io.h>
14a23dc694SShawn Guo #include <linux/module.h>
15a23dc694SShawn Guo #include <linux/of.h>
16a23dc694SShawn Guo #include <linux/of_device.h>
17a23dc694SShawn Guo #include <linux/platform_device.h>
18a23dc694SShawn Guo #include <linux/slab.h>
19a23dc694SShawn Guo
20a23dc694SShawn Guo #include "imx-audmux.h"
21a23dc694SShawn Guo
22a23dc694SShawn Guo #define DRIVER_NAME "imx-audmux"
23a23dc694SShawn Guo
24a23dc694SShawn Guo static struct clk *audmux_clk;
25a23dc694SShawn Guo static void __iomem *audmux_base;
268661ab5bSShengjiu Wang static u32 *regcache;
278661ab5bSShengjiu Wang static u32 reg_max;
28a23dc694SShawn Guo
29a23dc694SShawn Guo #define IMX_AUDMUX_V2_PTCR(x) ((x) * 8)
30a23dc694SShawn Guo #define IMX_AUDMUX_V2_PDCR(x) ((x) * 8 + 4)
31a23dc694SShawn Guo
32a23dc694SShawn Guo #ifdef CONFIG_DEBUG_FS
33a23dc694SShawn Guo static struct dentry *audmux_debugfs_root;
34a23dc694SShawn Guo
35a23dc694SShawn Guo /* There is an annoying discontinuity in the SSI numbering with regard
36a23dc694SShawn Guo * to the Linux number of the devices */
audmux_port_string(int port)37a23dc694SShawn Guo static const char *audmux_port_string(int port)
38a23dc694SShawn Guo {
39a23dc694SShawn Guo switch (port) {
40a23dc694SShawn Guo case MX31_AUDMUX_PORT1_SSI0:
41a23dc694SShawn Guo return "imx-ssi.0";
42a23dc694SShawn Guo case MX31_AUDMUX_PORT2_SSI1:
43a23dc694SShawn Guo return "imx-ssi.1";
44a23dc694SShawn Guo case MX31_AUDMUX_PORT3_SSI_PINS_3:
45a23dc694SShawn Guo return "SSI3";
46a23dc694SShawn Guo case MX31_AUDMUX_PORT4_SSI_PINS_4:
47a23dc694SShawn Guo return "SSI4";
48a23dc694SShawn Guo case MX31_AUDMUX_PORT5_SSI_PINS_5:
49a23dc694SShawn Guo return "SSI5";
50a23dc694SShawn Guo case MX31_AUDMUX_PORT6_SSI_PINS_6:
51a23dc694SShawn Guo return "SSI6";
52a23dc694SShawn Guo default:
53a23dc694SShawn Guo return "UNKNOWN";
54a23dc694SShawn Guo }
55a23dc694SShawn Guo }
56a23dc694SShawn Guo
audmux_read_file(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)57a23dc694SShawn Guo static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
58a23dc694SShawn Guo size_t count, loff_t *ppos)
59a23dc694SShawn Guo {
60a23dc694SShawn Guo ssize_t ret;
611b3ed70aSFelipe Pena char *buf;
62e5f89768SMark Brown uintptr_t port = (uintptr_t)file->private_data;
63a23dc694SShawn Guo u32 pdcr, ptcr;
64a23dc694SShawn Guo
6572192366SFabio Estevam ret = clk_prepare_enable(audmux_clk);
6672192366SFabio Estevam if (ret)
6772192366SFabio Estevam return ret;
68a23dc694SShawn Guo
69a23dc694SShawn Guo ptcr = readl(audmux_base + IMX_AUDMUX_V2_PTCR(port));
70a23dc694SShawn Guo pdcr = readl(audmux_base + IMX_AUDMUX_V2_PDCR(port));
71a23dc694SShawn Guo
72a23dc694SShawn Guo clk_disable_unprepare(audmux_clk);
73a23dc694SShawn Guo
741b3ed70aSFelipe Pena buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
751b3ed70aSFelipe Pena if (!buf)
761b3ed70aSFelipe Pena return -ENOMEM;
771b3ed70aSFelipe Pena
78a39bc7cfSye xingchen ret = sysfs_emit(buf, "PDCR: %08x\nPTCR: %08x\n", pdcr, ptcr);
79a23dc694SShawn Guo
80a23dc694SShawn Guo if (ptcr & IMX_AUDMUX_V2_PTCR_TFSDIR)
81c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
82a23dc694SShawn Guo "TxFS output from %s, ",
83a23dc694SShawn Guo audmux_port_string((ptcr >> 27) & 0x7));
84a23dc694SShawn Guo else
85c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
86a23dc694SShawn Guo "TxFS input, ");
87a23dc694SShawn Guo
88a23dc694SShawn Guo if (ptcr & IMX_AUDMUX_V2_PTCR_TCLKDIR)
89c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
90a23dc694SShawn Guo "TxClk output from %s",
91a23dc694SShawn Guo audmux_port_string((ptcr >> 22) & 0x7));
92a23dc694SShawn Guo else
93c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
94a23dc694SShawn Guo "TxClk input");
95a23dc694SShawn Guo
96c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
97a23dc694SShawn Guo
98a23dc694SShawn Guo if (ptcr & IMX_AUDMUX_V2_PTCR_SYN) {
99c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
100a23dc694SShawn Guo "Port is symmetric");
101a23dc694SShawn Guo } else {
102a23dc694SShawn Guo if (ptcr & IMX_AUDMUX_V2_PTCR_RFSDIR)
103c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
104a23dc694SShawn Guo "RxFS output from %s, ",
105a23dc694SShawn Guo audmux_port_string((ptcr >> 17) & 0x7));
106a23dc694SShawn Guo else
107c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
108a23dc694SShawn Guo "RxFS input, ");
109a23dc694SShawn Guo
110a23dc694SShawn Guo if (ptcr & IMX_AUDMUX_V2_PTCR_RCLKDIR)
111c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
112a23dc694SShawn Guo "RxClk output from %s",
113a23dc694SShawn Guo audmux_port_string((ptcr >> 12) & 0x7));
114a23dc694SShawn Guo else
115c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
116a23dc694SShawn Guo "RxClk input");
117a23dc694SShawn Guo }
118a23dc694SShawn Guo
119c407cd00SSilvio Cesare ret += scnprintf(buf + ret, PAGE_SIZE - ret,
120a23dc694SShawn Guo "\nData received from %s\n",
121a23dc694SShawn Guo audmux_port_string((pdcr >> 13) & 0x7));
122a23dc694SShawn Guo
123a23dc694SShawn Guo ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
124a23dc694SShawn Guo
125a23dc694SShawn Guo kfree(buf);
126a23dc694SShawn Guo
127a23dc694SShawn Guo return ret;
128a23dc694SShawn Guo }
129a23dc694SShawn Guo
130a23dc694SShawn Guo static const struct file_operations audmux_debugfs_fops = {
1311eecb828SMark Brown .open = simple_open,
132a23dc694SShawn Guo .read = audmux_read_file,
133a23dc694SShawn Guo .llseek = default_llseek,
134a23dc694SShawn Guo };
135a23dc694SShawn Guo
audmux_debugfs_init(void)136b8909783SLars-Peter Clausen static void audmux_debugfs_init(void)
137a23dc694SShawn Guo {
138e5f89768SMark Brown uintptr_t i;
139a23dc694SShawn Guo char buf[20];
140a23dc694SShawn Guo
141a23dc694SShawn Guo audmux_debugfs_root = debugfs_create_dir("audmux", NULL);
142a23dc694SShawn Guo
143409b78ccSTorben Hohn for (i = 0; i < MX31_AUDMUX_PORT7_SSI_PINS_7 + 1; i++) {
144e5f89768SMark Brown snprintf(buf, sizeof(buf), "ssi%lu", i);
145227ab8baSGreg Kroah-Hartman debugfs_create_file(buf, 0444, audmux_debugfs_root,
146227ab8baSGreg Kroah-Hartman (void *)i, &audmux_debugfs_fops);
147a23dc694SShawn Guo }
148a23dc694SShawn Guo }
149a23dc694SShawn Guo
audmux_debugfs_remove(void)150a0a3d518SBill Pemberton static void audmux_debugfs_remove(void)
151a23dc694SShawn Guo {
152a23dc694SShawn Guo debugfs_remove_recursive(audmux_debugfs_root);
153a23dc694SShawn Guo }
154a23dc694SShawn Guo #else
audmux_debugfs_init(void)155a23dc694SShawn Guo static inline void audmux_debugfs_init(void)
156a23dc694SShawn Guo {
157a23dc694SShawn Guo }
158a23dc694SShawn Guo
audmux_debugfs_remove(void)159a23dc694SShawn Guo static inline void audmux_debugfs_remove(void)
160a23dc694SShawn Guo {
161a23dc694SShawn Guo }
162a23dc694SShawn Guo #endif
163a23dc694SShawn Guo
164a10807aeSFabio Estevam static enum imx_audmux_type {
165a23dc694SShawn Guo IMX21_AUDMUX,
166a23dc694SShawn Guo IMX31_AUDMUX,
167a23dc694SShawn Guo } audmux_type;
168a23dc694SShawn Guo
169a23dc694SShawn Guo static const struct of_device_id imx_audmux_dt_ids[] = {
1706a8b8b58SFabio Estevam { .compatible = "fsl,imx21-audmux", .data = (void *)IMX21_AUDMUX, },
1716a8b8b58SFabio Estevam { .compatible = "fsl,imx31-audmux", .data = (void *)IMX31_AUDMUX, },
172a23dc694SShawn Guo { /* sentinel */ }
173a23dc694SShawn Guo };
174a23dc694SShawn Guo MODULE_DEVICE_TABLE(of, imx_audmux_dt_ids);
175a23dc694SShawn Guo
176a23dc694SShawn Guo static const uint8_t port_mapping[] = {
177a23dc694SShawn Guo 0x0, 0x4, 0x8, 0x10, 0x14, 0x1c,
178a23dc694SShawn Guo };
179a23dc694SShawn Guo
imx_audmux_v1_configure_port(unsigned int port,unsigned int pcr)180a23dc694SShawn Guo int imx_audmux_v1_configure_port(unsigned int port, unsigned int pcr)
181a23dc694SShawn Guo {
182a23dc694SShawn Guo if (audmux_type != IMX21_AUDMUX)
183a23dc694SShawn Guo return -EINVAL;
184a23dc694SShawn Guo
185a23dc694SShawn Guo if (!audmux_base)
186a23dc694SShawn Guo return -ENOSYS;
187a23dc694SShawn Guo
188a23dc694SShawn Guo if (port >= ARRAY_SIZE(port_mapping))
189a23dc694SShawn Guo return -EINVAL;
190a23dc694SShawn Guo
191a23dc694SShawn Guo writel(pcr, audmux_base + port_mapping[port]);
192a23dc694SShawn Guo
193a23dc694SShawn Guo return 0;
194a23dc694SShawn Guo }
195a23dc694SShawn Guo EXPORT_SYMBOL_GPL(imx_audmux_v1_configure_port);
196a23dc694SShawn Guo
imx_audmux_v2_configure_port(unsigned int port,unsigned int ptcr,unsigned int pdcr)197a23dc694SShawn Guo int imx_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
198a23dc694SShawn Guo unsigned int pdcr)
199a23dc694SShawn Guo {
20072192366SFabio Estevam int ret;
20172192366SFabio Estevam
202a23dc694SShawn Guo if (audmux_type != IMX31_AUDMUX)
203a23dc694SShawn Guo return -EINVAL;
204a23dc694SShawn Guo
205a23dc694SShawn Guo if (!audmux_base)
206a23dc694SShawn Guo return -ENOSYS;
207a23dc694SShawn Guo
20872192366SFabio Estevam ret = clk_prepare_enable(audmux_clk);
20972192366SFabio Estevam if (ret)
21072192366SFabio Estevam return ret;
211a23dc694SShawn Guo
212a23dc694SShawn Guo writel(ptcr, audmux_base + IMX_AUDMUX_V2_PTCR(port));
213a23dc694SShawn Guo writel(pdcr, audmux_base + IMX_AUDMUX_V2_PDCR(port));
214a23dc694SShawn Guo
215a23dc694SShawn Guo clk_disable_unprepare(audmux_clk);
216a23dc694SShawn Guo
217a23dc694SShawn Guo return 0;
218a23dc694SShawn Guo }
219a23dc694SShawn Guo EXPORT_SYMBOL_GPL(imx_audmux_v2_configure_port);
220a23dc694SShawn Guo
imx_audmux_parse_dt_defaults(struct platform_device * pdev,struct device_node * of_node)2218548a464SMarkus Pargmann static int imx_audmux_parse_dt_defaults(struct platform_device *pdev,
2228548a464SMarkus Pargmann struct device_node *of_node)
2238548a464SMarkus Pargmann {
2248548a464SMarkus Pargmann struct device_node *child;
2258548a464SMarkus Pargmann
2268548a464SMarkus Pargmann for_each_available_child_of_node(of_node, child) {
2278548a464SMarkus Pargmann unsigned int port;
2288548a464SMarkus Pargmann unsigned int ptcr = 0;
2298548a464SMarkus Pargmann unsigned int pdcr = 0;
2308548a464SMarkus Pargmann unsigned int pcr = 0;
2318548a464SMarkus Pargmann unsigned int val;
2328548a464SMarkus Pargmann int ret;
2338548a464SMarkus Pargmann int i = 0;
2348548a464SMarkus Pargmann
2358548a464SMarkus Pargmann ret = of_property_read_u32(child, "fsl,audmux-port", &port);
2368548a464SMarkus Pargmann if (ret) {
23706d15a2eSRob Herring dev_warn(&pdev->dev, "Failed to get fsl,audmux-port of child node \"%pOF\"\n",
23806d15a2eSRob Herring child);
2398548a464SMarkus Pargmann continue;
2408548a464SMarkus Pargmann }
2418548a464SMarkus Pargmann if (!of_property_read_bool(child, "fsl,port-config")) {
24206d15a2eSRob Herring dev_warn(&pdev->dev, "child node \"%pOF\" does not have property fsl,port-config\n",
24306d15a2eSRob Herring child);
2448548a464SMarkus Pargmann continue;
2458548a464SMarkus Pargmann }
2468548a464SMarkus Pargmann
2478548a464SMarkus Pargmann for (i = 0; (ret = of_property_read_u32_index(child,
2489c0aeaa3SMarkus Pargmann "fsl,port-config", i, &val)) == 0;
2498548a464SMarkus Pargmann ++i) {
2508548a464SMarkus Pargmann if (audmux_type == IMX31_AUDMUX) {
2518548a464SMarkus Pargmann if (i % 2)
2528548a464SMarkus Pargmann pdcr |= val;
2538548a464SMarkus Pargmann else
2548548a464SMarkus Pargmann ptcr |= val;
2558548a464SMarkus Pargmann } else {
2568548a464SMarkus Pargmann pcr |= val;
2578548a464SMarkus Pargmann }
2588548a464SMarkus Pargmann }
2598548a464SMarkus Pargmann
2609c0aeaa3SMarkus Pargmann if (ret != -EOVERFLOW) {
26106d15a2eSRob Herring dev_err(&pdev->dev, "Failed to read u32 at index %d of child %pOF\n",
26206d15a2eSRob Herring i, child);
2638548a464SMarkus Pargmann continue;
2648548a464SMarkus Pargmann }
2658548a464SMarkus Pargmann
2668548a464SMarkus Pargmann if (audmux_type == IMX31_AUDMUX) {
2678548a464SMarkus Pargmann if (i % 2) {
26806d15a2eSRob Herring dev_err(&pdev->dev, "One pdcr value is missing in child node %pOF\n",
26906d15a2eSRob Herring child);
2708548a464SMarkus Pargmann continue;
2718548a464SMarkus Pargmann }
2728548a464SMarkus Pargmann imx_audmux_v2_configure_port(port, ptcr, pdcr);
2738548a464SMarkus Pargmann } else {
2748548a464SMarkus Pargmann imx_audmux_v1_configure_port(port, pcr);
2758548a464SMarkus Pargmann }
2768548a464SMarkus Pargmann }
2778548a464SMarkus Pargmann
2788548a464SMarkus Pargmann return 0;
2798548a464SMarkus Pargmann }
2808548a464SMarkus Pargmann
imx_audmux_probe(struct platform_device * pdev)281a0a3d518SBill Pemberton static int imx_audmux_probe(struct platform_device *pdev)
282a23dc694SShawn Guo {
283d003e308SYueHaibing audmux_base = devm_platform_ioremap_resource(pdev, 0);
284b25b5aa0SThierry Reding if (IS_ERR(audmux_base))
285b25b5aa0SThierry Reding return PTR_ERR(audmux_base);
286a23dc694SShawn Guo
287127c5cadSFabio Estevam audmux_clk = devm_clk_get(&pdev->dev, "audmux");
288a23dc694SShawn Guo if (IS_ERR(audmux_clk)) {
289a23dc694SShawn Guo dev_dbg(&pdev->dev, "cannot get clock: %ld\n",
290a23dc694SShawn Guo PTR_ERR(audmux_clk));
291a23dc694SShawn Guo audmux_clk = NULL;
292a23dc694SShawn Guo }
293a23dc694SShawn Guo
2942f4a8171SFabio Estevam audmux_type = (uintptr_t)of_device_get_match_data(&pdev->dev);
2958661ab5bSShengjiu Wang
2968661ab5bSShengjiu Wang switch (audmux_type) {
2978661ab5bSShengjiu Wang case IMX31_AUDMUX:
298a23dc694SShawn Guo audmux_debugfs_init();
2998661ab5bSShengjiu Wang reg_max = 14;
3008661ab5bSShengjiu Wang break;
3018661ab5bSShengjiu Wang case IMX21_AUDMUX:
3028661ab5bSShengjiu Wang reg_max = 6;
3038661ab5bSShengjiu Wang break;
3048661ab5bSShengjiu Wang default:
3058661ab5bSShengjiu Wang dev_err(&pdev->dev, "unsupported version!\n");
3068661ab5bSShengjiu Wang return -EINVAL;
3078661ab5bSShengjiu Wang }
3088661ab5bSShengjiu Wang
3098661ab5bSShengjiu Wang regcache = devm_kzalloc(&pdev->dev, sizeof(u32) * reg_max, GFP_KERNEL);
3108661ab5bSShengjiu Wang if (!regcache)
3118661ab5bSShengjiu Wang return -ENOMEM;
312a23dc694SShawn Guo
3138548a464SMarkus Pargmann imx_audmux_parse_dt_defaults(pdev, pdev->dev.of_node);
3148548a464SMarkus Pargmann
315a23dc694SShawn Guo return 0;
316a23dc694SShawn Guo }
317a23dc694SShawn Guo
imx_audmux_remove(struct platform_device * pdev)318*51451f46SUwe Kleine-König static void imx_audmux_remove(struct platform_device *pdev)
319a23dc694SShawn Guo {
320a23dc694SShawn Guo if (audmux_type == IMX31_AUDMUX)
321a23dc694SShawn Guo audmux_debugfs_remove();
322a23dc694SShawn Guo }
323a23dc694SShawn Guo
3248661ab5bSShengjiu Wang #ifdef CONFIG_PM_SLEEP
imx_audmux_suspend(struct device * dev)3258661ab5bSShengjiu Wang static int imx_audmux_suspend(struct device *dev)
3268661ab5bSShengjiu Wang {
3278661ab5bSShengjiu Wang int i;
3288661ab5bSShengjiu Wang
3298661ab5bSShengjiu Wang clk_prepare_enable(audmux_clk);
3308661ab5bSShengjiu Wang
3318661ab5bSShengjiu Wang for (i = 0; i < reg_max; i++)
3328661ab5bSShengjiu Wang regcache[i] = readl(audmux_base + i * 4);
3338661ab5bSShengjiu Wang
3348661ab5bSShengjiu Wang clk_disable_unprepare(audmux_clk);
3358661ab5bSShengjiu Wang
3368661ab5bSShengjiu Wang return 0;
3378661ab5bSShengjiu Wang }
3388661ab5bSShengjiu Wang
imx_audmux_resume(struct device * dev)3398661ab5bSShengjiu Wang static int imx_audmux_resume(struct device *dev)
3408661ab5bSShengjiu Wang {
3418661ab5bSShengjiu Wang int i;
3428661ab5bSShengjiu Wang
3438661ab5bSShengjiu Wang clk_prepare_enable(audmux_clk);
3448661ab5bSShengjiu Wang
3458661ab5bSShengjiu Wang for (i = 0; i < reg_max; i++)
3468661ab5bSShengjiu Wang writel(regcache[i], audmux_base + i * 4);
3478661ab5bSShengjiu Wang
3488661ab5bSShengjiu Wang clk_disable_unprepare(audmux_clk);
3498661ab5bSShengjiu Wang
3508661ab5bSShengjiu Wang return 0;
3518661ab5bSShengjiu Wang }
3528661ab5bSShengjiu Wang #endif /* CONFIG_PM_SLEEP */
3538661ab5bSShengjiu Wang
3548661ab5bSShengjiu Wang static const struct dev_pm_ops imx_audmux_pm = {
3558661ab5bSShengjiu Wang SET_SYSTEM_SLEEP_PM_OPS(imx_audmux_suspend, imx_audmux_resume)
3568661ab5bSShengjiu Wang };
3578661ab5bSShengjiu Wang
358a23dc694SShawn Guo static struct platform_driver imx_audmux_driver = {
359a23dc694SShawn Guo .probe = imx_audmux_probe,
360*51451f46SUwe Kleine-König .remove_new = imx_audmux_remove,
361a23dc694SShawn Guo .driver = {
362a23dc694SShawn Guo .name = DRIVER_NAME,
3638661ab5bSShengjiu Wang .pm = &imx_audmux_pm,
364a23dc694SShawn Guo .of_match_table = imx_audmux_dt_ids,
365a23dc694SShawn Guo }
366a23dc694SShawn Guo };
367a23dc694SShawn Guo
imx_audmux_init(void)368a23dc694SShawn Guo static int __init imx_audmux_init(void)
369a23dc694SShawn Guo {
370a23dc694SShawn Guo return platform_driver_register(&imx_audmux_driver);
371a23dc694SShawn Guo }
372a23dc694SShawn Guo subsys_initcall(imx_audmux_init);
373a23dc694SShawn Guo
imx_audmux_exit(void)374a23dc694SShawn Guo static void __exit imx_audmux_exit(void)
375a23dc694SShawn Guo {
376a23dc694SShawn Guo platform_driver_unregister(&imx_audmux_driver);
377a23dc694SShawn Guo }
378a23dc694SShawn Guo module_exit(imx_audmux_exit);
379a23dc694SShawn Guo
380a23dc694SShawn Guo MODULE_DESCRIPTION("Freescale i.MX AUDMUX driver");
381a23dc694SShawn Guo MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
382a23dc694SShawn Guo MODULE_LICENSE("GPL v2");
383a23dc694SShawn Guo MODULE_ALIAS("platform:" DRIVER_NAME);
384