Merge branch 'linus' into objtool/core, to pick up Xen dependencies

Pick up dependencies - freshly merged upstream via xen-next - before applying
dependent objtool changes.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 0 insertions, 648 deletions

diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c
deleted file mode 100644
index 7380c32b238e..000000000000
--- a/drivers/cpufreq/s3c24xx-cpufreq.c
+++ /dev/null
@@ -1,648 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2006-2008 Simtec Electronics
- *	http://armlinux.simtec.co.uk/
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C24XX CPU Frequency scaling
-*/
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/cpufreq.h>
-#include <linux/cpu.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/device.h>
-#include <linux/sysfs.h>
-#include <linux/slab.h>
-#include <linux/soc/samsung/s3c-cpufreq-core.h>
-#include <linux/soc/samsung/s3c-pm.h>
-
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-
-/* note, cpufreq support deals in kHz, no Hz */
-static struct cpufreq_driver s3c24xx_driver;
-static struct s3c_cpufreq_config cpu_cur;
-static struct s3c_iotimings s3c24xx_iotiming;
-static struct cpufreq_frequency_table *pll_reg;
-static unsigned int last_target = ~0;
-static unsigned int ftab_size;
-static struct cpufreq_frequency_table *ftab;
-
-static struct clk *_clk_mpll;
-static struct clk *_clk_xtal;
-static struct clk *clk_fclk;
-static struct clk *clk_hclk;
-static struct clk *clk_pclk;
-static struct clk *clk_arm;
-
-#ifdef CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS
-struct s3c_cpufreq_config *s3c_cpufreq_getconfig(void)
-{
-	return &cpu_cur;
-}
-
-struct s3c_iotimings *s3c_cpufreq_getiotimings(void)
-{
-	return &s3c24xx_iotiming;
-}
-#endif /* CONFIG_ARM_S3C24XX_CPUFREQ_DEBUGFS */
-
-static void s3c_cpufreq_getcur(struct s3c_cpufreq_config *cfg)
-{
-	unsigned long fclk, pclk, hclk, armclk;
-
-	cfg->freq.fclk = fclk = clk_get_rate(clk_fclk);
-	cfg->freq.hclk = hclk = clk_get_rate(clk_hclk);
-	cfg->freq.pclk = pclk = clk_get_rate(clk_pclk);
-	cfg->freq.armclk = armclk = clk_get_rate(clk_arm);
-
-	cfg->pll.driver_data = s3c24xx_read_mpllcon();
-	cfg->pll.frequency = fclk;
-
-	cfg->freq.hclk_tns = 1000000000 / (cfg->freq.hclk / 10);
-
-	cfg->divs.h_divisor = fclk / hclk;
-	cfg->divs.p_divisor = fclk / pclk;
-}
-
-static inline void s3c_cpufreq_calc(struct s3c_cpufreq_config *cfg)
-{
-	unsigned long pll = cfg->pll.frequency;
-
-	cfg->freq.fclk = pll;
-	cfg->freq.hclk = pll / cfg->divs.h_divisor;
-	cfg->freq.pclk = pll / cfg->divs.p_divisor;
-
-	/* convert hclk into 10ths of nanoseconds for io calcs */
-	cfg->freq.hclk_tns = 1000000000 / (cfg->freq.hclk / 10);
-}
-
-static inline int closer(unsigned int target, unsigned int n, unsigned int c)
-{
-	int diff_cur = abs(target - c);
-	int diff_new = abs(target - n);
-
-	return (diff_new < diff_cur);
-}
-
-static void s3c_cpufreq_show(const char *pfx,
-				 struct s3c_cpufreq_config *cfg)
-{
-	s3c_freq_dbg("%s: Fvco=%u, F=%lu, A=%lu, H=%lu (%u), P=%lu (%u)\n",
-		     pfx, cfg->pll.frequency, cfg->freq.fclk, cfg->freq.armclk,
-		     cfg->freq.hclk, cfg->divs.h_divisor,
-		     cfg->freq.pclk, cfg->divs.p_divisor);
-}
-
-/* functions to wrapper the driver info calls to do the cpu specific work */
-
-static void s3c_cpufreq_setio(struct s3c_cpufreq_config *cfg)
-{
-	if (cfg->info->set_iotiming)
-		(cfg->info->set_iotiming)(cfg, &s3c24xx_iotiming);
-}
-
-static int s3c_cpufreq_calcio(struct s3c_cpufreq_config *cfg)
-{
-	if (cfg->info->calc_iotiming)
-		return (cfg->info->calc_iotiming)(cfg, &s3c24xx_iotiming);
-
-	return 0;
-}
-
-static void s3c_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg)
-{
-	(cfg->info->set_refresh)(cfg);
-}
-
-static void s3c_cpufreq_setdivs(struct s3c_cpufreq_config *cfg)
-{
-	(cfg->info->set_divs)(cfg);
-}
-
-static int s3c_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg)
-{
-	return (cfg->info->calc_divs)(cfg);
-}
-
-static void s3c_cpufreq_setfvco(struct s3c_cpufreq_config *cfg)
-{
-	cfg->mpll = _clk_mpll;
-	(cfg->info->set_fvco)(cfg);
-}
-
-static inline void s3c_cpufreq_updateclk(struct clk *clk,
-					 unsigned int freq)
-{
-	clk_set_rate(clk, freq);
-}
-
-static int s3c_cpufreq_settarget(struct cpufreq_policy *policy,
-				 unsigned int target_freq,
-				 struct cpufreq_frequency_table *pll)
-{
-	struct s3c_cpufreq_freqs freqs;
-	struct s3c_cpufreq_config cpu_new;
-	unsigned long flags;
-
-	cpu_new = cpu_cur;  /* copy new from current */
-
-	s3c_cpufreq_show("cur", &cpu_cur);
-
-	/* TODO - check for DMA currently outstanding */
-
-	cpu_new.pll = pll ? *pll : cpu_cur.pll;
-
-	if (pll)
-		freqs.pll_changing = 1;
-
-	/* update our frequencies */
-
-	cpu_new.freq.armclk = target_freq;
-	cpu_new.freq.fclk = cpu_new.pll.frequency;
-
-	if (s3c_cpufreq_calcdivs(&cpu_new) < 0) {
-		pr_err("no divisors for %d\n", target_freq);
-		goto err_notpossible;
-	}
-
-	s3c_freq_dbg("%s: got divs\n", __func__);
-
-	s3c_cpufreq_calc(&cpu_new);
-
-	s3c_freq_dbg("%s: calculated frequencies for new\n", __func__);
-
-	if (cpu_new.freq.hclk != cpu_cur.freq.hclk) {
-		if (s3c_cpufreq_calcio(&cpu_new) < 0) {
-			pr_err("%s: no IO timings\n", __func__);
-			goto err_notpossible;
-		}
-	}
-
-	s3c_cpufreq_show("new", &cpu_new);
-
-	/* setup our cpufreq parameters */
-
-	freqs.old = cpu_cur.freq;
-	freqs.new = cpu_new.freq;
-
-	freqs.freqs.old = cpu_cur.freq.armclk / 1000;
-	freqs.freqs.new = cpu_new.freq.armclk / 1000;
-
-	/* update f/h/p clock settings before we issue the change
-	 * notification, so that drivers do not need to do anything
-	 * special if they want to recalculate on CPUFREQ_PRECHANGE. */
-
-	s3c_cpufreq_updateclk(_clk_mpll, cpu_new.pll.frequency);
-	s3c_cpufreq_updateclk(clk_fclk, cpu_new.freq.fclk);
-	s3c_cpufreq_updateclk(clk_hclk, cpu_new.freq.hclk);
-	s3c_cpufreq_updateclk(clk_pclk, cpu_new.freq.pclk);
-
-	/* start the frequency change */
-	cpufreq_freq_transition_begin(policy, &freqs.freqs);
-
-	/* If hclk is staying the same, then we do not need to
-	 * re-write the IO or the refresh timings whilst we are changing
-	 * speed. */
-
-	local_irq_save(flags);
-
-	/* is our memory clock slowing down? */
-	if (cpu_new.freq.hclk < cpu_cur.freq.hclk) {
-		s3c_cpufreq_setrefresh(&cpu_new);
-		s3c_cpufreq_setio(&cpu_new);
-	}
-
-	if (cpu_new.freq.fclk == cpu_cur.freq.fclk) {
-		/* not changing PLL, just set the divisors */
-
-		s3c_cpufreq_setdivs(&cpu_new);
-	} else {
-		if (cpu_new.freq.fclk < cpu_cur.freq.fclk) {
-			/* slow the cpu down, then set divisors */
-
-			s3c_cpufreq_setfvco(&cpu_new);
-			s3c_cpufreq_setdivs(&cpu_new);
-		} else {
-			/* set the divisors, then speed up */
-
-			s3c_cpufreq_setdivs(&cpu_new);
-			s3c_cpufreq_setfvco(&cpu_new);
-		}
-	}
-
-	/* did our memory clock speed up */
-	if (cpu_new.freq.hclk > cpu_cur.freq.hclk) {
-		s3c_cpufreq_setrefresh(&cpu_new);
-		s3c_cpufreq_setio(&cpu_new);
-	}
-
-	/* update our current settings */
-	cpu_cur = cpu_new;
-
-	local_irq_restore(flags);
-
-	/* notify everyone we've done this */
-	cpufreq_freq_transition_end(policy, &freqs.freqs, 0);
-
-	s3c_freq_dbg("%s: finished\n", __func__);
-	return 0;
-
- err_notpossible:
-	pr_err("no compatible settings for %d\n", target_freq);
-	return -EINVAL;
-}
-
-/* s3c_cpufreq_target
- *
- * called by the cpufreq core to adjust the frequency that the CPU
- * is currently running at.
- */
-
-static int s3c_cpufreq_target(struct cpufreq_policy *policy,
-			      unsigned int target_freq,
-			      unsigned int relation)
-{
-	struct cpufreq_frequency_table *pll;
-	unsigned int index;
-
-	/* avoid repeated calls which cause a needless amout of duplicated
-	 * logging output (and CPU time as the calculation process is
-	 * done) */
-	if (target_freq == last_target)
-		return 0;
-
-	last_target = target_freq;
-
-	s3c_freq_dbg("%s: policy %p, target %u, relation %u\n",
-		     __func__, policy, target_freq, relation);
-
-	if (ftab) {
-		index = cpufreq_frequency_table_target(policy, target_freq,
-						       relation);
-
-		s3c_freq_dbg("%s: adjust %d to entry %d (%u)\n", __func__,
-			     target_freq, index, ftab[index].frequency);
-		target_freq = ftab[index].frequency;
-	}
-
-	target_freq *= 1000;  /* convert target to Hz */
-
-	/* find the settings for our new frequency */
-
-	if (!pll_reg || cpu_cur.lock_pll) {
-		/* either we've not got any PLL values, or we've locked
-		 * to the current one. */
-		pll = NULL;
-	} else {
-		struct cpufreq_policy tmp_policy;
-
-		/* we keep the cpu pll table in Hz, to ensure we get an
-		 * accurate value for the PLL output. */
-
-		tmp_policy.min = policy->min * 1000;
-		tmp_policy.max = policy->max * 1000;
-		tmp_policy.cpu = policy->cpu;
-		tmp_policy.freq_table = pll_reg;
-
-		/* cpufreq_frequency_table_target returns the index
-		 * of the table entry, not the value of
-		 * the table entry's index field. */
-
-		index = cpufreq_frequency_table_target(&tmp_policy, target_freq,
-						       relation);
-		pll = pll_reg + index;
-
-		s3c_freq_dbg("%s: target %u => %u\n",
-			     __func__, target_freq, pll->frequency);
-
-		target_freq = pll->frequency;
-	}
-
-	return s3c_cpufreq_settarget(policy, target_freq, pll);
-}
-
-struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name)
-{
-	struct clk *clk;
-
-	clk = clk_get(dev, name);
-	if (IS_ERR(clk))
-		pr_err("failed to get clock '%s'\n", name);
-
-	return clk;
-}
-
-static int s3c_cpufreq_init(struct cpufreq_policy *policy)
-{
-	policy->clk = clk_arm;
-	policy->cpuinfo.transition_latency = cpu_cur.info->latency;
-	policy->freq_table = ftab;
-
-	return 0;
-}
-
-static int __init s3c_cpufreq_initclks(void)
-{
-	_clk_mpll = s3c_cpufreq_clk_get(NULL, "mpll");
-	_clk_xtal = s3c_cpufreq_clk_get(NULL, "xtal");
-	clk_fclk = s3c_cpufreq_clk_get(NULL, "fclk");
-	clk_hclk = s3c_cpufreq_clk_get(NULL, "hclk");
-	clk_pclk = s3c_cpufreq_clk_get(NULL, "pclk");
-	clk_arm = s3c_cpufreq_clk_get(NULL, "armclk");
-
-	if (IS_ERR(clk_fclk) || IS_ERR(clk_hclk) || IS_ERR(clk_pclk) ||
-	    IS_ERR(_clk_mpll) || IS_ERR(clk_arm) || IS_ERR(_clk_xtal)) {
-		pr_err("%s: could not get clock(s)\n", __func__);
-		return -ENOENT;
-	}
-
-	pr_info("%s: clocks f=%lu,h=%lu,p=%lu,a=%lu\n",
-		__func__,
-		clk_get_rate(clk_fclk) / 1000,
-		clk_get_rate(clk_hclk) / 1000,
-		clk_get_rate(clk_pclk) / 1000,
-		clk_get_rate(clk_arm) / 1000);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static struct cpufreq_frequency_table suspend_pll;
-static unsigned int suspend_freq;
-
-static int s3c_cpufreq_suspend(struct cpufreq_policy *policy)
-{
-	suspend_pll.frequency = clk_get_rate(_clk_mpll);
-	suspend_pll.driver_data = s3c24xx_read_mpllcon();
-	suspend_freq = clk_get_rate(clk_arm);
-
-	return 0;
-}
-
-static int s3c_cpufreq_resume(struct cpufreq_policy *policy)
-{
-	int ret;
-
-	s3c_freq_dbg("%s: resuming with policy %p\n", __func__, policy);
-
-	last_target = ~0;	/* invalidate last_target setting */
-
-	/* whilst we will be called later on, we try and re-set the
-	 * cpu frequencies as soon as possible so that we do not end
-	 * up resuming devices and then immediately having to re-set
-	 * a number of settings once these devices have restarted.
-	 *
-	 * as a note, it is expected devices are not used until they
-	 * have been un-suspended and at that time they should have
-	 * used the updated clock settings.
-	 */
-
-	ret = s3c_cpufreq_settarget(NULL, suspend_freq, &suspend_pll);
-	if (ret) {
-		pr_err("%s: failed to reset pll/freq\n", __func__);
-		return ret;
-	}
-
-	return 0;
-}
-#else
-#define s3c_cpufreq_resume NULL
-#define s3c_cpufreq_suspend NULL
-#endif
-
-static struct cpufreq_driver s3c24xx_driver = {
-	.flags		= CPUFREQ_NEED_INITIAL_FREQ_CHECK,
-	.target		= s3c_cpufreq_target,
-	.get		= cpufreq_generic_get,
-	.init		= s3c_cpufreq_init,
-	.suspend	= s3c_cpufreq_suspend,
-	.resume		= s3c_cpufreq_resume,
-	.name		= "s3c24xx",
-};
-
-
-int s3c_cpufreq_register(struct s3c_cpufreq_info *info)
-{
-	if (!info || !info->name) {
-		pr_err("%s: failed to pass valid information\n", __func__);
-		return -EINVAL;
-	}
-
-	pr_info("S3C24XX CPU Frequency driver, %s cpu support\n",
-		info->name);
-
-	/* check our driver info has valid data */
-
-	BUG_ON(info->set_refresh == NULL);
-	BUG_ON(info->set_divs == NULL);
-	BUG_ON(info->calc_divs == NULL);
-
-	/* info->set_fvco is optional, depending on whether there
-	 * is a need to set the clock code. */
-
-	cpu_cur.info = info;
-
-	/* Note, driver registering should probably update locktime */
-
-	return 0;
-}
-
-int __init s3c_cpufreq_setboard(struct s3c_cpufreq_board *board)
-{
-	struct s3c_cpufreq_board *ours;
-
-	if (!board) {
-		pr_info("%s: no board data\n", __func__);
-		return -EINVAL;
-	}
-
-	/* Copy the board information so that each board can make this
-	 * initdata. */
-
-	ours = kzalloc(sizeof(*ours), GFP_KERNEL);
-	if (!ours)
-		return -ENOMEM;
-
-	*ours = *board;
-	cpu_cur.board = ours;
-
-	return 0;
-}
-
-static int __init s3c_cpufreq_auto_io(void)
-{
-	int ret;
-
-	if (!cpu_cur.info->get_iotiming) {
-		pr_err("%s: get_iotiming undefined\n", __func__);
-		return -ENOENT;
-	}
-
-	pr_info("%s: working out IO settings\n", __func__);
-
-	ret = (cpu_cur.info->get_iotiming)(&cpu_cur, &s3c24xx_iotiming);
-	if (ret)
-		pr_err("%s: failed to get timings\n", __func__);
-
-	return ret;
-}
-
-/* if one or is zero, then return the other, otherwise return the min */
-#define do_min(_a, _b) ((_a) == 0 ? (_b) : (_b) == 0 ? (_a) : min(_a, _b))
-
-/**
- * s3c_cpufreq_freq_min - find the minimum settings for the given freq.
- * @dst: The destination structure
- * @a: One argument.
- * @b: The other argument.
- *
- * Create a minimum of each frequency entry in the 'struct s3c_freq',
- * unless the entry is zero when it is ignored and the non-zero argument
- * used.
- */
-static void s3c_cpufreq_freq_min(struct s3c_freq *dst,
-				 struct s3c_freq *a, struct s3c_freq *b)
-{
-	dst->fclk = do_min(a->fclk, b->fclk);
-	dst->hclk = do_min(a->hclk, b->hclk);
-	dst->pclk = do_min(a->pclk, b->pclk);
-	dst->armclk = do_min(a->armclk, b->armclk);
-}
-
-static inline u32 calc_locktime(u32 freq, u32 time_us)
-{
-	u32 result;
-
-	result = freq * time_us;
-	result = DIV_ROUND_UP(result, 1000 * 1000);
-
-	return result;
-}
-
-static void s3c_cpufreq_update_loctkime(void)
-{
-	unsigned int bits = cpu_cur.info->locktime_bits;
-	u32 rate = (u32)clk_get_rate(_clk_xtal);
-	u32 val;
-
-	if (bits == 0) {
-		WARN_ON(1);
-		return;
-	}
-
-	val = calc_locktime(rate, cpu_cur.info->locktime_u) << bits;
-	val |= calc_locktime(rate, cpu_cur.info->locktime_m);
-
-	pr_info("%s: new locktime is 0x%08x\n", __func__, val);
-	s3c24xx_write_locktime(val);
-}
-
-static int s3c_cpufreq_build_freq(void)
-{
-	int size, ret;
-
-	kfree(ftab);
-
-	size = cpu_cur.info->calc_freqtable(&cpu_cur, NULL, 0);
-	size++;
-
-	ftab = kcalloc(size, sizeof(*ftab), GFP_KERNEL);
-	if (!ftab)
-		return -ENOMEM;
-
-	ftab_size = size;
-
-	ret = cpu_cur.info->calc_freqtable(&cpu_cur, ftab, size);
-	s3c_cpufreq_addfreq(ftab, ret, size, CPUFREQ_TABLE_END);
-
-	return 0;
-}
-
-static int __init s3c_cpufreq_initcall(void)
-{
-	int ret = 0;
-
-	if (cpu_cur.info && cpu_cur.board) {
-		ret = s3c_cpufreq_initclks();
-		if (ret)
-			goto out;
-
-		/* get current settings */
-		s3c_cpufreq_getcur(&cpu_cur);
-		s3c_cpufreq_show("cur", &cpu_cur);
-
-		if (cpu_cur.board->auto_io) {
-			ret = s3c_cpufreq_auto_io();
-			if (ret) {
-				pr_err("%s: failed to get io timing\n",
-				       __func__);
-				goto out;
-			}
-		}
-
-		if (cpu_cur.board->need_io && !cpu_cur.info->set_iotiming) {
-			pr_err("%s: no IO support registered\n", __func__);
-			ret = -EINVAL;
-			goto out;
-		}
-
-		if (!cpu_cur.info->need_pll)
-			cpu_cur.lock_pll = 1;
-
-		s3c_cpufreq_update_loctkime();
-
-		s3c_cpufreq_freq_min(&cpu_cur.max, &cpu_cur.board->max,
-				     &cpu_cur.info->max);
-
-		if (cpu_cur.info->calc_freqtable)
-			s3c_cpufreq_build_freq();
-
-		ret = cpufreq_register_driver(&s3c24xx_driver);
-	}
-
- out:
-	return ret;
-}
-
-late_initcall(s3c_cpufreq_initcall);
-
-/**
- * s3c_plltab_register - register CPU PLL table.
- * @plls: The list of PLL entries.
- * @plls_no: The size of the PLL entries @plls.
- *
- * Register the given set of PLLs with the system.
- */
-int s3c_plltab_register(struct cpufreq_frequency_table *plls,
-			       unsigned int plls_no)
-{
-	struct cpufreq_frequency_table *vals;
-	unsigned int size;
-
-	size = sizeof(*vals) * (plls_no + 1);
-
-	vals = kzalloc(size, GFP_KERNEL);
-	if (vals) {
-		memcpy(vals, plls, size);
-		pll_reg = vals;
-
-		/* write a terminating entry, we don't store it in the
-		 * table that is stored in the kernel */
-		vals += plls_no;
-		vals->frequency = CPUFREQ_TABLE_END;
-
-		pr_info("%d PLL entries\n", plls_no);
-	} else
-		pr_err("no memory for PLL tables\n");
-
-	return vals ? 0 : -ENOMEM;
-}