1 // SPDX-License-Identifier: GPL-2.0+
19 #include "imx-audmux.h"
21 #define DRIVER_NAME "imx-audmux"
40 		return "imx-ssi.0";  in audmux_port_string()
42 		return "imx-ssi.1";  in audmux_port_string()
61 	uintptr_t port = (uintptr_t)file->private_data;  in audmux_read_file()
75 		return -ENOMEM;  in audmux_read_file()
80 		ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
84 		ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
88 		ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
92 		ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
95 	ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");  in audmux_read_file()
98 		ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
102 			ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
106 			ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
110 			ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
114 			ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
118 	ret += scnprintf(buf + ret, PAGE_SIZE - ret,  in audmux_read_file()
140 	audmux_debugfs_root = debugfs_create_dir("audmux", NULL);  in audmux_debugfs_init()
169 	{ .compatible = "fsl,imx21-audmux", .data = (void *)IMX21_AUDMUX, },
170 	{ .compatible = "fsl,imx31-audmux", .data = (void *)IMX31_AUDMUX, },
182 		return -EINVAL;  in imx_audmux_v1_configure_port()
185 		return -ENOSYS;  in imx_audmux_v1_configure_port()
188 		return -EINVAL;  in imx_audmux_v1_configure_port()
202 		return -EINVAL;  in imx_audmux_v2_configure_port()
205 		return -ENOSYS;  in imx_audmux_v2_configure_port()
234 		ret = of_property_read_u32(child, "fsl,audmux-port", &port);  in imx_audmux_parse_dt_defaults()
236 			dev_warn(&pdev->dev, "Failed to get fsl,audmux-port of child node \"%pOF\"\n",  in imx_audmux_parse_dt_defaults()
240 		if (!of_property_present(child, "fsl,port-config")) {  in imx_audmux_parse_dt_defaults()
241 			dev_warn(&pdev->dev, "child node \"%pOF\" does not have property fsl,port-config\n",  in imx_audmux_parse_dt_defaults()
247 					"fsl,port-config", i, &val)) == 0;  in imx_audmux_parse_dt_defaults()
259 		if (ret != -EOVERFLOW) {  in imx_audmux_parse_dt_defaults()
260 			dev_err(&pdev->dev, "Failed to read u32 at index %d of child %pOF\n",  in imx_audmux_parse_dt_defaults()
267 				dev_err(&pdev->dev, "One pdcr value is missing in child node %pOF\n",  in imx_audmux_parse_dt_defaults()
286 	audmux_clk = devm_clk_get(&pdev->dev, "audmux");  in imx_audmux_probe()
288 		dev_dbg(&pdev->dev, "cannot get clock: %ld\n",  in imx_audmux_probe()
293 	audmux_type = (uintptr_t)of_device_get_match_data(&pdev->dev);  in imx_audmux_probe()
304 		dev_err(&pdev->dev, "unsupported version!\n");  in imx_audmux_probe()
305 		return -EINVAL;  in imx_audmux_probe()
308 	regcache = devm_kzalloc(&pdev->dev, sizeof(u32) * reg_max, GFP_KERNEL);  in imx_audmux_probe()
310 		return -ENOMEM;  in imx_audmux_probe()
312 	imx_audmux_parse_dt_defaults(pdev, pdev->dev.of_node);  in imx_audmux_probe()
377 MODULE_DESCRIPTION("Freescale i.MX AUDMUX driver");