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linux/drivers/clk/h8300/clk-h8s2678.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

146 lines
3.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
/*
* H8S2678 clock driver
*
* Copyright 2015 Yoshinori Sato <ysato@users.sourceforge.jp>
*/
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/err.h>
#include <linux/of_address.h>
#include <linux/slab.h>
static DEFINE_SPINLOCK(clklock);
#define MAX_FREQ 33333333
#define MIN_FREQ 8000000
struct pll_clock {
struct clk_hw hw;
void __iomem *sckcr;
void __iomem *pllcr;
};
#define to_pll_clock(_hw) container_of(_hw, struct pll_clock, hw)
static unsigned long pll_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct pll_clock *pll_clock = to_pll_clock(hw);
int mul = 1 << (readb(pll_clock->pllcr) & 3);
return parent_rate * mul;
}
static long pll_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
int i, m = -1;
long offset[3];
if (rate > MAX_FREQ)
rate = MAX_FREQ;
if (rate < MIN_FREQ)
rate = MIN_FREQ;
for (i = 0; i < 3; i++)
offset[i] = abs(rate - (*prate * (1 << i)));
for (i = 0; i < 3; i++)
if (m < 0)
m = i;
else
m = (offset[i] < offset[m])?i:m;
return *prate * (1 << m);
}
static int pll_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
int pll;
unsigned char val;
unsigned long flags;
struct pll_clock *pll_clock = to_pll_clock(hw);
pll = ((rate / parent_rate) / 2) & 0x03;
spin_lock_irqsave(&clklock, flags);
val = readb(pll_clock->sckcr);
val |= 0x08;
writeb(val, pll_clock->sckcr);
val = readb(pll_clock->pllcr);
val &= ~0x03;
val |= pll;
writeb(val, pll_clock->pllcr);
spin_unlock_irqrestore(&clklock, flags);
return 0;
}
static const struct clk_ops pll_ops = {
.recalc_rate = pll_recalc_rate,
.round_rate = pll_round_rate,
.set_rate = pll_set_rate,
};
static void __init h8s2678_pll_clk_setup(struct device_node *node)
{
unsigned int num_parents;
const char *clk_name = node->name;
const char *parent_name;
struct pll_clock *pll_clock;
struct clk_init_data init;
int ret;
num_parents = of_clk_get_parent_count(node);
if (!num_parents) {
pr_err("%s: no parent found\n", clk_name);
return;
}
pll_clock = kzalloc(sizeof(*pll_clock), GFP_KERNEL);
if (!pll_clock)
return;
pll_clock->sckcr = of_iomap(node, 0);
if (pll_clock->sckcr == NULL) {
pr_err("%s: failed to map divide register\n", clk_name);
goto free_clock;
}
pll_clock->pllcr = of_iomap(node, 1);
if (pll_clock->pllcr == NULL) {
pr_err("%s: failed to map multiply register\n", clk_name);
goto unmap_sckcr;
}
parent_name = of_clk_get_parent_name(node, 0);
init.name = clk_name;
init.ops = &pll_ops;
init.flags = 0;
init.parent_names = &parent_name;
init.num_parents = 1;
pll_clock->hw.init = &init;
ret = clk_hw_register(NULL, &pll_clock->hw);
if (ret) {
pr_err("%s: failed to register %s div clock (%d)\n",
__func__, clk_name, ret);
goto unmap_pllcr;
}
of_clk_add_hw_provider(node, of_clk_hw_simple_get, &pll_clock->hw);
return;
unmap_pllcr:
iounmap(pll_clock->pllcr);
unmap_sckcr:
iounmap(pll_clock->sckcr);
free_clock:
kfree(pll_clock);
}
CLK_OF_DECLARE(h8s2678_div_clk, "renesas,h8s2678-pll-clock",
h8s2678_pll_clk_setup);
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