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clk: mvebu: add helper file for Armada AP and CP clocks

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Clock drivers for Armada AP and Armada CP use the same function to
generate unique clock name. A third drivers is coming with the same
need, so it's time to move this function in a common file.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lkml.kernel.org/r/20190710134346.30239-3-gregory.clement@bootlin.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Gregory CLEMENT 2019-07-10 15:43:42 +02:00 committed by Stephen Boyd
parent 096f459740
commit 33c0259092
6 changed files with 61 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/clk/mvebu/Kconfig
View File

@ -8,6 +8,9 @@ config MVEBU_CLK_CPU
config MVEBU_CLK_COREDIV
bool
config ARMADA_AP_CP_HELPER
bool
config ARMADA_370_CLK
bool
select MVEBU_CLK_COMMON
@ -35,9 +38,11 @@ config ARMADA_XP_CLK
config ARMADA_AP806_SYSCON
bool
select ARMADA_AP_CP_HELPER
config ARMADA_CP110_SYSCON
bool
select ARMADA_AP_CP_HELPER
config DOVE_CLK
bool

1
drivers/clk/mvebu/Makefile
View File

@ -2,6 +2,7 @@
obj-$(CONFIG_MVEBU_CLK_COMMON) += common.o
obj-$(CONFIG_MVEBU_CLK_CPU) += clk-cpu.o
obj-$(CONFIG_MVEBU_CLK_COREDIV) += clk-corediv.o
obj-$(CONFIG_ARMADA_AP_CP_HELPER) += armada_ap_cp_helper.o
obj-$(CONFIG_ARMADA_370_CLK) += armada-370.o
obj-$(CONFIG_ARMADA_375_CLK) += armada-375.o

24
drivers/clk/mvebu/ap806-system-controller.c
View File

@ -10,11 +10,11 @@
#define pr_fmt(fmt) "ap806-system-controller: " fmt
#include "armada_ap_cp_helper.h"
#include <linux/clk-provider.h>
#include <linux/mfd/syscon.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
@ -30,18 +30,6 @@ static struct clk_onecell_data ap806_clk_data = {
.clk_num = AP806_CLK_NUM,
};
static char *ap806_unique_name(struct device *dev, struct device_node *np,
char *name)
{
const __be32 *reg;
u64 addr;
reg = of_get_property(np, "reg", NULL);
addr = of_translate_address(np, reg);
return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s",
(unsigned long long)addr, name);
}
static int ap806_syscon_common_probe(struct platform_device *pdev,
struct device_node *syscon_node)
{
@ -109,7 +97,7 @@ static int ap806_syscon_common_probe(struct platform_device *pdev,
cpuclk_freq *= 1000 * 1000;
/* CPU clocks depend on the Sample At Reset configuration */
name = ap806_unique_name(dev, syscon_node, "cpu-cluster-0");
name = ap_cp_unique_name(dev, syscon_node, "cpu-cluster-0");
ap806_clks[0] = clk_register_fixed_rate(dev, name, NULL,
0, cpuclk_freq);
if (IS_ERR(ap806_clks[0])) {
@ -117,7 +105,7 @@ static int ap806_syscon_common_probe(struct platform_device *pdev,
goto fail0;
}
name = ap806_unique_name(dev, syscon_node, "cpu-cluster-1");
name = ap_cp_unique_name(dev, syscon_node, "cpu-cluster-1");
ap806_clks[1] = clk_register_fixed_rate(dev, name, NULL, 0,
cpuclk_freq);
if (IS_ERR(ap806_clks[1])) {
@ -126,7 +114,7 @@ static int ap806_syscon_common_probe(struct platform_device *pdev,
}
/* Fixed clock is always 1200 Mhz */
fixedclk_name = ap806_unique_name(dev, syscon_node, "fixed");
fixedclk_name = ap_cp_unique_name(dev, syscon_node, "fixed");
ap806_clks[2] = clk_register_fixed_rate(dev, fixedclk_name, NULL,
0, 1200 * 1000 * 1000);
if (IS_ERR(ap806_clks[2])) {
@ -135,7 +123,7 @@ static int ap806_syscon_common_probe(struct platform_device *pdev,
}
/* MSS Clock is fixed clock divided by 6 */
name = ap806_unique_name(dev, syscon_node, "mss");
name = ap_cp_unique_name(dev, syscon_node, "mss");
ap806_clks[3] = clk_register_fixed_factor(NULL, name, fixedclk_name,
0, 1, 6);
if (IS_ERR(ap806_clks[3])) {
@ -144,7 +132,7 @@ static int ap806_syscon_common_probe(struct platform_device *pdev,
}
/* SDIO(/eMMC) Clock is fixed clock divided by 3 */
name = ap806_unique_name(dev, syscon_node, "sdio");
name = ap_cp_unique_name(dev, syscon_node, "sdio");
ap806_clks[4] = clk_register_fixed_factor(NULL, name,
fixedclk_name,
0, 1, 3);

30
drivers/clk/mvebu/armada_ap_cp_helper.c Normal file
View File

@ -0,0 +1,30 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Marvell Armada AP and CP110 helper
*
* Copyright (C) 2018 Marvell
*
* Gregory Clement <gregory.clement@bootlin.com>
*
*/
#include "armada_ap_cp_helper.h"
#include <linux/device.h>
#include <linux/of.h>
#include <linux/of_address.h>
char *ap_cp_unique_name(struct device *dev, struct device_node *np,
const char *name)
{
const __be32 *reg;
u64 addr;
/* Do not create a name if there is no clock */
if (!name)
return NULL;
reg = of_get_property(np, "reg", NULL);
addr = of_translate_address(np, reg);
return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s",
(unsigned long long)addr, name);
}

11
drivers/clk/mvebu/armada_ap_cp_helper.h Normal file
View File

@ -0,0 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef __ARMADA_AP_CP_HELPER_H
#define __ARMADA_AP_CP_HELPER_H
struct device;
struct device_node;
char *ap_cp_unique_name(struct device *dev, struct device_node *np,
const char *name);
#endif

32
drivers/clk/mvebu/cp110-system-controller.c
View File

@ -26,11 +26,11 @@
#define pr_fmt(fmt) "cp110-system-controller: " fmt
#include "armada_ap_cp_helper.h"
#include <linux/clk-provider.h>
#include <linux/mfd/syscon.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
@ -212,22 +212,6 @@ static struct clk_hw *cp110_of_clk_get(struct of_phandle_args *clkspec,
return ERR_PTR(-EINVAL);
}
static char *cp110_unique_name(struct device *dev, struct device_node *np,
const char *name)
{
const __be32 *reg;
u64 addr;
/* Do not create a name if there is no clock */
if (!name)
return NULL;
reg = of_get_property(np, "reg", NULL);
addr = of_translate_address(np, reg);
return devm_kasprintf(dev, GFP_KERNEL, "%llx-%s",
(unsigned long long)addr, name);
}
static int cp110_syscon_common_probe(struct platform_device *pdev,
struct device_node *syscon_node)
{
@ -261,7 +245,7 @@ static int cp110_syscon_common_probe(struct platform_device *pdev,
cp110_clk_data->num = CP110_CLK_NUM;
/* Register the PLL0 which is the root of the hw tree */
pll0_name = cp110_unique_name(dev, syscon_node, "pll0");
pll0_name = ap_cp_unique_name(dev, syscon_node, "pll0");
hw = clk_hw_register_fixed_rate(NULL, pll0_name, NULL, 0,
1000 * 1000 * 1000);
if (IS_ERR(hw)) {
@ -272,7 +256,7 @@ static int cp110_syscon_common_probe(struct platform_device *pdev,
cp110_clks[CP110_CORE_PLL0] = hw;
/* PPv2 is PLL0/3 */
ppv2_name = cp110_unique_name(dev, syscon_node, "ppv2-core");
ppv2_name = ap_cp_unique_name(dev, syscon_node, "ppv2-core");
hw = clk_hw_register_fixed_factor(NULL, ppv2_name, pll0_name, 0, 1, 3);
if (IS_ERR(hw)) {
ret = PTR_ERR(hw);
@ -282,7 +266,7 @@ static int cp110_syscon_common_probe(struct platform_device *pdev,
cp110_clks[CP110_CORE_PPV2] = hw;
/* X2CORE clock is PLL0/2 */
x2core_name = cp110_unique_name(dev, syscon_node, "x2core");
x2core_name = ap_cp_unique_name(dev, syscon_node, "x2core");
hw = clk_hw_register_fixed_factor(NULL, x2core_name, pll0_name,
0, 1, 2);
if (IS_ERR(hw)) {
@ -293,7 +277,7 @@ static int cp110_syscon_common_probe(struct platform_device *pdev,
cp110_clks[CP110_CORE_X2CORE] = hw;
/* Core clock is X2CORE/2 */
core_name = cp110_unique_name(dev, syscon_node, "core");
core_name = ap_cp_unique_name(dev, syscon_node, "core");
hw = clk_hw_register_fixed_factor(NULL, core_name, x2core_name,
0, 1, 2);
if (IS_ERR(hw)) {
@ -303,7 +287,7 @@ static int cp110_syscon_common_probe(struct platform_device *pdev,
cp110_clks[CP110_CORE_CORE] = hw;
/* NAND can be either PLL0/2.5 or core clock */
nand_name = cp110_unique_name(dev, syscon_node, "nand-core");
nand_name = ap_cp_unique_name(dev, syscon_node, "nand-core");
if (nand_clk_ctrl & NF_CLOCK_SEL_400_MASK)
hw = clk_hw_register_fixed_factor(NULL, nand_name,
pll0_name, 0, 2, 5);
@ -318,7 +302,7 @@ static int cp110_syscon_common_probe(struct platform_device *pdev,
cp110_clks[CP110_CORE_NAND] = hw;
/* SDIO clock is PLL0/2.5 */
sdio_name = cp110_unique_name(dev, syscon_node, "sdio-core");
sdio_name = ap_cp_unique_name(dev, syscon_node, "sdio-core");
hw = clk_hw_register_fixed_factor(NULL, sdio_name,
pll0_name, 0, 2, 5);
if (IS_ERR(hw)) {
@ -330,7 +314,7 @@ static int cp110_syscon_common_probe(struct platform_device *pdev,
/* create the unique name for all the gate clocks */
for (i = 0; i < ARRAY_SIZE(gate_base_names); i++)
gate_name[i] = cp110_unique_name(dev, syscon_node,
gate_name[i] = ap_cp_unique_name(dev, syscon_node,
gate_base_names[i]);
for (i = 0; i < ARRAY_SIZE(gate_base_names); i++) {