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2024-02-19 1c055e55a242a33e574e48be530e06770a210dcd

 kernel/arch/x86/platform/atom/punit_atom_debug.c
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@@ -1,19 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Intel SOC Punit device state debug driver
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  * Punit controls power management for North Complex devices (Graphics
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  * blocks, Image Signal Processing, video processing, display, DSP etc.)
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  *
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  * Copyright (c) 2015, Intel Corporation.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms and conditions of the GNU General Public License,
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- * version 2, as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope it will be useful, but WITHOUT
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- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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- * more details.
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- *
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  */
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9
 
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 #include <linux/module.h>
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@@ -113,24 +104,12 @@
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104
 
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 static struct dentry *punit_dbg_file;
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-static int punit_dbgfs_register(struct punit_device *punit_device)
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+static void punit_dbgfs_register(struct punit_device *punit_device)
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 {
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-	static struct dentry *dev_state;
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-
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 	punit_dbg_file = debugfs_create_dir("punit_atom", NULL);
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-	if (!punit_dbg_file)
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-		return -ENXIO;
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-	dev_state = debugfs_create_file("dev_power_state", 0444,
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-					punit_dbg_file, punit_device,
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-					&punit_dev_state_fops);
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-	if (!dev_state) {
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-		pr_err("punit_dev_state register failed\n");
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-		debugfs_remove(punit_dbg_file);
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-		return -ENXIO;
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-	}
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-
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-	return 0;
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+	debugfs_create_file("dev_power_state", 0444, punit_dbg_file,
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+			    punit_device, &punit_dev_state_fops);
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 }
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 static void punit_dbgfs_unregister(void)
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@@ -138,31 +117,27 @@
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 	debugfs_remove_recursive(punit_dbg_file);
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 }
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-#define ICPU(model, drv_data) \
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-	{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT,\
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-	  (kernel_ulong_t)&drv_data }
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+#define X86_MATCH(model, data)						 \
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+	X86_MATCH_VENDOR_FAM_MODEL_FEATURE(INTEL, 6, INTEL_FAM6_##model, \
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+					   X86_FEATURE_MWAIT, data)
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 static const struct x86_cpu_id intel_punit_cpu_ids[] = {
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-	ICPU(INTEL_FAM6_ATOM_SILVERMONT, punit_device_byt),
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-	ICPU(INTEL_FAM6_ATOM_SILVERMONT_MID,  punit_device_tng),
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-	ICPU(INTEL_FAM6_ATOM_AIRMONT,	  punit_device_cht),
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+	X86_MATCH(ATOM_SILVERMONT,		&punit_device_byt),
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+	X86_MATCH(ATOM_SILVERMONT_MID,		&punit_device_tng),
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+	X86_MATCH(ATOM_AIRMONT,			&punit_device_cht),
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 	{}
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 };
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-
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 MODULE_DEVICE_TABLE(x86cpu, intel_punit_cpu_ids);
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 static int __init punit_atom_debug_init(void)
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 {
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 	const struct x86_cpu_id *id;
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-	int ret;
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 	id = x86_match_cpu(intel_punit_cpu_ids);
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 	if (!id)
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 		return -ENODEV;
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-	ret = punit_dbgfs_register((struct punit_device *)id->driver_data);
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-	if (ret < 0)
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-		return ret;
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+	punit_dbgfs_register((struct punit_device *)id->driver_data);
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 	return 0;
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 }