disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/arch/x86/kernel/apb_timer.c
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@@ -1,13 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * apb_timer.c: Driver for Langwell APB timers
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  *
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  * (C) Copyright 2009 Intel Corporation
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  * Author: Jacob Pan (jacob.jun.pan@intel.com)
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; version 2
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- * of the License.
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  *
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  * Note:
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  * Langwell is the south complex of Intel Moorestown MID platform. There are
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@@ -99,7 +95,7 @@
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 		printk(KERN_WARNING "No timer base from SFI, use default\n");
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 		apbt_address = APBT_DEFAULT_BASE;
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 	}
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-	apbt_virt_address = ioremap_nocache(apbt_address, APBT_MMAP_SIZE);
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+	apbt_virt_address = ioremap(apbt_address, APBT_MMAP_SIZE);
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 	if (!apbt_virt_address) {
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 		pr_debug("Failed mapping APBT phy address at %lu\n",\
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 			 (unsigned long)apbt_address);
..
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@@ -348,57 +344,4 @@
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 	apbt_clear_mapping();
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 	apb_timer_block_enabled = 0;
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 	panic("failed to enable APB timer\n");
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-}
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-
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-/* called before apb_timer_enable, use early map */
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-unsigned long apbt_quick_calibrate(void)
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-{
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-	int i, scale;
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-	u64 old, new;
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-	u64 t1, t2;
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-	unsigned long khz = 0;
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-	u32 loop, shift;
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-
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-	apbt_set_mapping();
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-	dw_apb_clocksource_start(clocksource_apbt);
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-
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-	/* check if the timer can count down, otherwise return */
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-	old = dw_apb_clocksource_read(clocksource_apbt);
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-	i = 10000;
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-	while (--i) {
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-		if (old != dw_apb_clocksource_read(clocksource_apbt))
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-			break;
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-	}
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-	if (!i)
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-		goto failed;
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-
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-	/* count 16 ms */
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-	loop = (apbt_freq / 1000) << 4;
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-
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-	/* restart the timer to ensure it won't get to 0 in the calibration */
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-	dw_apb_clocksource_start(clocksource_apbt);
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-
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-	old = dw_apb_clocksource_read(clocksource_apbt);
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-	old += loop;
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-
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-	t1 = rdtsc();
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-
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-	do {
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-		new = dw_apb_clocksource_read(clocksource_apbt);
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-	} while (new < old);
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-
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-	t2 = rdtsc();
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-
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-	shift = 5;
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-	if (unlikely(loop >> shift == 0)) {
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-		printk(KERN_INFO
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-		       "APBT TSC calibration failed, not enough resolution\n");
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-		return 0;
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-	}
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-	scale = (int)div_u64((t2 - t1), loop >> shift);
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-	khz = (scale * (apbt_freq / 1000)) >> shift;
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-	printk(KERN_INFO "TSC freq calculated by APB timer is %lu khz\n", khz);
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-	return khz;
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-failed:
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-	return 0;
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 }