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linux_dsm_epyc7002/drivers/clk/sunxi-ng/ccu_sdm.c
Stephen Boyd 62e59c4e69 clk: Remove io.h from clk-provider.h 
Now that we've gotten rid of clk_readl() we can remove io.h from the
clk-provider header and push out the io.h include to any code that isn't
already including the io.h header but using things like readl/writel,
etc.

Found with this grep:

  git grep -l clk-provider.h | grep '.c$' | xargs git grep -L 'linux/io.h' | \
  	xargs git grep -l \
	-e '\<__iowrite32_copy\>' --or \
	-e '\<__ioread32_copy\>' --or \
	-e '\<__iowrite64_copy\>' --or \
	-e '\<ioremap_page_range\>' --or \
	-e '\<ioremap_huge_init\>' --or \
	-e '\<arch_ioremap_pud_supported\>' --or \
	-e '\<arch_ioremap_pmd_supported\>' --or \
	-e '\<devm_ioport_map\>' --or \
	-e '\<devm_ioport_unmap\>' --or \
	-e '\<IOMEM_ERR_PTR\>' --or \
	-e '\<devm_ioremap\>' --or \
	-e '\<devm_ioremap_nocache\>' --or \
	-e '\<devm_ioremap_wc\>' --or \
	-e '\<devm_iounmap\>' --or \
	-e '\<devm_ioremap_release\>' --or \
	-e '\<devm_memremap\>' --or \
	-e '\<devm_memunmap\>' --or \
	-e '\<__devm_memremap_pages\>' --or \
	-e '\<pci_remap_cfgspace\>' --or \
	-e '\<arch_has_dev_port\>' --or \
	-e '\<arch_phys_wc_add\>' --or \
	-e '\<arch_phys_wc_del\>' --or \
	-e '\<memremap\>' --or \
	-e '\<memunmap\>' --or \
	-e '\<arch_io_reserve_memtype_wc\>' --or \
	-e '\<arch_io_free_memtype_wc\>' --or \
	-e '\<__io_aw\>' --or \
	-e '\<__io_pbw\>' --or \
	-e '\<__io_paw\>' --or \
	-e '\<__io_pbr\>' --or \
	-e '\<__io_par\>' --or \
	-e '\<__raw_readb\>' --or \
	-e '\<__raw_readw\>' --or \
	-e '\<__raw_readl\>' --or \
	-e '\<__raw_readq\>' --or \
	-e '\<__raw_writeb\>' --or \
	-e '\<__raw_writew\>' --or \
	-e '\<__raw_writel\>' --or \
	-e '\<__raw_writeq\>' --or \
	-e '\<readb\>' --or \
	-e '\<readw\>' --or \
	-e '\<readl\>' --or \
	-e '\<readq\>' --or \
	-e '\<writeb\>' --or \
	-e '\<writew\>' --or \
	-e '\<writel\>' --or \
	-e '\<writeq\>' --or \
	-e '\<readb_relaxed\>' --or \
	-e '\<readw_relaxed\>' --or \
	-e '\<readl_relaxed\>' --or \
	-e '\<readq_relaxed\>' --or \
	-e '\<writeb_relaxed\>' --or \
	-e '\<writew_relaxed\>' --or \
	-e '\<writel_relaxed\>' --or \
	-e '\<writeq_relaxed\>' --or \
	-e '\<readsb\>' --or \
	-e '\<readsw\>' --or \
	-e '\<readsl\>' --or \
	-e '\<readsq\>' --or \
	-e '\<writesb\>' --or \
	-e '\<writesw\>' --or \
	-e '\<writesl\>' --or \
	-e '\<writesq\>' --or \
	-e '\<inb\>' --or \
	-e '\<inw\>' --or \
	-e '\<inl\>' --or \
	-e '\<outb\>' --or \
	-e '\<outw\>' --or \
	-e '\<outl\>' --or \
	-e '\<inb_p\>' --or \
	-e '\<inw_p\>' --or \
	-e '\<inl_p\>' --or \
	-e '\<outb_p\>' --or \
	-e '\<outw_p\>' --or \
	-e '\<outl_p\>' --or \
	-e '\<insb\>' --or \
	-e '\<insw\>' --or \
	-e '\<insl\>' --or \
	-e '\<outsb\>' --or \
	-e '\<outsw\>' --or \
	-e '\<outsl\>' --or \
	-e '\<insb_p\>' --or \
	-e '\<insw_p\>' --or \
	-e '\<insl_p\>' --or \
	-e '\<outsb_p\>' --or \
	-e '\<outsw_p\>' --or \
	-e '\<outsl_p\>' --or \
	-e '\<ioread8\>' --or \
	-e '\<ioread16\>' --or \
	-e '\<ioread32\>' --or \
	-e '\<ioread64\>' --or \
	-e '\<iowrite8\>' --or \
	-e '\<iowrite16\>' --or \
	-e '\<iowrite32\>' --or \
	-e '\<iowrite64\>' --or \
	-e '\<ioread16be\>' --or \
	-e '\<ioread32be\>' --or \
	-e '\<ioread64be\>' --or \
	-e '\<iowrite16be\>' --or \
	-e '\<iowrite32be\>' --or \
	-e '\<iowrite64be\>' --or \
	-e '\<ioread8_rep\>' --or \
	-e '\<ioread16_rep\>' --or \
	-e '\<ioread32_rep\>' --or \
	-e '\<ioread64_rep\>' --or \
	-e '\<iowrite8_rep\>' --or \
	-e '\<iowrite16_rep\>' --or \
	-e '\<iowrite32_rep\>' --or \
	-e '\<iowrite64_rep\>' --or \
	-e '\<__io_virt\>' --or \
	-e '\<pci_iounmap\>' --or \
	-e '\<virt_to_phys\>' --or \
	-e '\<phys_to_virt\>' --or \
	-e '\<ioremap_uc\>' --or \
	-e '\<ioremap\>' --or \
	-e '\<__ioremap\>' --or \
	-e '\<iounmap\>' --or \
	-e '\<ioremap\>' --or \
	-e '\<ioremap_nocache\>' --or \
	-e '\<ioremap_uc\>' --or \
	-e '\<ioremap_wc\>' --or \
	-e '\<ioremap_wc\>' --or \
	-e '\<ioremap_wt\>' --or \
	-e '\<ioport_map\>' --or \
	-e '\<ioport_unmap\>' --or \
	-e '\<ioport_map\>' --or \
	-e '\<ioport_unmap\>' --or \
	-e '\<xlate_dev_kmem_ptr\>' --or \
	-e '\<xlate_dev_mem_ptr\>' --or \
	-e '\<unxlate_dev_mem_ptr\>' --or \
	-e '\<virt_to_bus\>' --or \
	-e '\<bus_to_virt\>' --or \
	-e '\<memset_io\>' --or \
	-e '\<memcpy_fromio\>' --or \
	-e '\<memcpy_toio\>'

I also reordered a couple includes when they weren't alphabetical and
removed clk.h from kona, replacing it with clk-provider.h because
that driver doesn't use clk consumer APIs.

Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Cc: Chris Zankel <chris@zankel.net>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: John Crispin <john@phrozen.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-15 13:21:37 -07:00

160 lines
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/*
* Copyright (C) 2017 Chen-Yu Tsai <wens@csie.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/spinlock.h>
#include "ccu_sdm.h"
bool ccu_sdm_helper_is_enabled(struct ccu_common *common,
struct ccu_sdm_internal *sdm)
{
if (!(common->features & CCU_FEATURE_SIGMA_DELTA_MOD))
return false;
if (sdm->enable && !(readl(common->base + common->reg) & sdm->enable))
return false;
return !!(readl(common->base + sdm->tuning_reg) & sdm->tuning_enable);
}
void ccu_sdm_helper_enable(struct ccu_common *common,
struct ccu_sdm_internal *sdm,
unsigned long rate)
{
unsigned long flags;
unsigned int i;
u32 reg;
if (!(common->features & CCU_FEATURE_SIGMA_DELTA_MOD))
return;
/* Set the pattern */
for (i = 0; i < sdm->table_size; i++)
if (sdm->table[i].rate == rate)
writel(sdm->table[i].pattern,
common->base + sdm->tuning_reg);
/* Make sure SDM is enabled */
spin_lock_irqsave(common->lock, flags);
reg = readl(common->base + sdm->tuning_reg);
writel(reg | sdm->tuning_enable, common->base + sdm->tuning_reg);
spin_unlock_irqrestore(common->lock, flags);
spin_lock_irqsave(common->lock, flags);
reg = readl(common->base + common->reg);
writel(reg | sdm->enable, common->base + common->reg);
spin_unlock_irqrestore(common->lock, flags);
}
void ccu_sdm_helper_disable(struct ccu_common *common,
struct ccu_sdm_internal *sdm)
{
unsigned long flags;
u32 reg;
if (!(common->features & CCU_FEATURE_SIGMA_DELTA_MOD))
return;
spin_lock_irqsave(common->lock, flags);
reg = readl(common->base + common->reg);
writel(reg & ~sdm->enable, common->base + common->reg);
spin_unlock_irqrestore(common->lock, flags);
spin_lock_irqsave(common->lock, flags);
reg = readl(common->base + sdm->tuning_reg);
writel(reg & ~sdm->tuning_enable, common->base + sdm->tuning_reg);
spin_unlock_irqrestore(common->lock, flags);
}
/*
* Sigma delta modulation provides a way to do fractional-N frequency
* synthesis, in essence allowing the PLL to output any frequency
* within its operational range. On earlier SoCs such as the A10/A20,
* some PLLs support this. On later SoCs, all PLLs support this.
*
* The datasheets do not explain what the "wave top" and "wave bottom"
* parameters mean or do, nor how to calculate the effective output
* frequency. The only examples (and real world usage) are for the audio
* PLL to generate 24.576 and 22.5792 MHz clock rates used by the audio
* peripherals. The author lacks the underlying domain knowledge to
* pursue this.
*
* The goal and function of the following code is to support the two
* clock rates used by the audio subsystem, allowing for proper audio
* playback and capture without any pitch or speed changes.
*/
bool ccu_sdm_helper_has_rate(struct ccu_common *common,
struct ccu_sdm_internal *sdm,
unsigned long rate)
{
unsigned int i;
if (!(common->features & CCU_FEATURE_SIGMA_DELTA_MOD))
return false;
for (i = 0; i < sdm->table_size; i++)
if (sdm->table[i].rate == rate)
return true;
return false;
}
unsigned long ccu_sdm_helper_read_rate(struct ccu_common *common,
struct ccu_sdm_internal *sdm,
u32 m, u32 n)
{
unsigned int i;
u32 reg;
pr_debug("%s: Read sigma-delta modulation setting\n",
clk_hw_get_name(&common->hw));
if (!(common->features & CCU_FEATURE_SIGMA_DELTA_MOD))
return 0;
pr_debug("%s: clock is sigma-delta modulated\n",
clk_hw_get_name(&common->hw));
reg = readl(common->base + sdm->tuning_reg);
pr_debug("%s: pattern reg is 0x%x",
clk_hw_get_name(&common->hw), reg);
for (i = 0; i < sdm->table_size; i++)
if (sdm->table[i].pattern == reg &&
sdm->table[i].m == m && sdm->table[i].n == n)
return sdm->table[i].rate;
/* We can't calculate the effective clock rate, so just fail. */
return 0;
}
int ccu_sdm_helper_get_factors(struct ccu_common *common,
struct ccu_sdm_internal *sdm,
unsigned long rate,
unsigned long *m, unsigned long *n)
{
unsigned int i;
if (!(common->features & CCU_FEATURE_SIGMA_DELTA_MOD))
return -EINVAL;
for (i = 0; i < sdm->table_size; i++)
if (sdm->table[i].rate == rate) {
*m = sdm->table[i].m;
*n = sdm->table[i].n;
return 0;
}
/* nothing found */
return -EINVAL;
}
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