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Message-ID: <152393630051.51482.7797391524865573162@swboyd.mtv.corp.google.com>
Date: Mon, 16 Apr 2018 20:38:20 -0700
From: Stephen Boyd <sboyd@...nel.org>
To: Tali Perry <tali.perry1@...il.com>, avifishman70@...il.com,
brendanhiggins@...gle.com, linux@...linux.org.uk,
mark.rutland@....com, raltherr@...gle.com, robh+dt@...nel.org,
tmaimon77@...il.com
Cc: devicetree@...r.kernel.org, openbmc@...ts.ozlabs.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Tali Perry <tali.perry1@...il.com>
Subject: Re: [PATCH v12 2/2] clk: npcm7xx: add clock controller
Quoting Tali Perry (2018-03-26 03:16:26)
> * Nuvoton NPCM7XX Clock Controller
>
> Nuvoton Poleg BMC NPCM7XX contains an integrated clock controller, which
> generates and supplies clocks to all modules within the BMC.
>
>
>
> Signed-off-by: Tali Perry <tali.perry1@...il.com>
>
>
There should be a triple dash here.
I applied this to clk-next with these changes squashed in. If anything
is wrong let me know.
----8<----
diff --git a/drivers/clk/clk-npcm7xx.c b/drivers/clk/clk-npcm7xx.c
index 7e4964b9e5c8..dba5384f03a4 100644
--- a/drivers/clk/clk-npcm7xx.c
+++ b/drivers/clk/clk-npcm7xx.c
@@ -8,24 +8,16 @@
*/
#include <linux/module.h>
-#include <linux/clk.h>
#include <linux/clk-provider.h>
-#include <linux/device.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_platform.h>
#include <linux/of_address.h>
-#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/err.h>
-#include <linux/rational.h>
#include <linux/bitfield.h>
-#include <dt-bindings/clock/nuvoton,npcm7xx-clock.h>
-
-#include <asm/cp15.h>
+#include <dt-bindings/clock/nuvoton,npcm7xx-clock.h>
struct npcm7xx_clk_pll {
struct clk_hw hw;
@@ -35,9 +27,6 @@ struct npcm7xx_clk_pll {
#define to_npcm7xx_clk_pll(_hw) container_of(_hw, struct npcm7xx_clk_pll, hw)
-struct clk_hw *npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name,
- const char *parent_name, unsigned long flags);
-
#define PLLCON_LOKI BIT(31)
#define PLLCON_LOKS BIT(30)
#define PLLCON_FBDV GENMASK(27, 16)
@@ -55,8 +44,7 @@ static unsigned long npcm7xx_clk_pll_recalc_rate(struct clk_hw *hw,
u64 ret;
if (parent_rate == 0) {
- pr_err("%s: parent rate is zero. reg=%x\n", __func__,
- (u32)(pll->pllcon));
+ pr_err("%s: parent rate is zero", __func__);
return 0;
}
@@ -73,13 +61,13 @@ static unsigned long npcm7xx_clk_pll_recalc_rate(struct clk_hw *hw,
return ret;
}
-const struct clk_ops npcm7xx_clk_pll_ops = {
+static const struct clk_ops npcm7xx_clk_pll_ops = {
.recalc_rate = npcm7xx_clk_pll_recalc_rate,
};
-
-struct clk_hw *npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name,
- const char *parent_name, unsigned long flags)
+static struct clk_hw *
+npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name,
+ const char *parent_name, unsigned long flags)
{
struct npcm7xx_clk_pll *pll;
struct clk_init_data init;
@@ -90,8 +78,7 @@ struct clk_hw *npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name,
if (!pll)
return ERR_PTR(-ENOMEM);
- pr_debug("%s reg, reg=0x%x, name=%s, p=%s\n",
- __func__, (unsigned int)pllcon, name, parent_name);
+ pr_debug("%s reg, name=%s, p=%s\n", __func__, name, parent_name);
init.name = name;
init.ops = &npcm7xx_clk_pll_ops;
@@ -113,7 +100,6 @@ struct clk_hw *npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name,
return hw;
}
-
#define NPCM7XX_CLKEN1 (0x00)
#define NPCM7XX_CLKEN2 (0x28)
#define NPCM7XX_CLKEN3 (0x30)
@@ -143,7 +129,6 @@ struct clk_hw *npcm7xx_clk_register_pll(void __iomem *pllcon, const char *name,
#define NPCM7XX_SECCNT (0x68)
#define NPCM7XX_CNTR25M (0x6C)
-
struct npcm7xx_clk_gate_data {
u32 reg;
u8 bit_idx;
@@ -219,7 +204,6 @@ struct npcm7xx_clk_pll_data {
int onecell_idx;
};
-
/*
* Single copy of strings used to refer to clocks within this driver indexed by
* above enum.
@@ -271,7 +255,6 @@ struct npcm7xx_clk_pll_data {
#define NPCM7XX_CLK_S_USB_BRIDGE "usb_bridge"
#define NPCM7XX_CLK_S_PCI "pci"
-
static u32 pll_mux_table[] = {0, 1, 2, 3};
static const char * const pll_mux_parents[] __initconst = {
NPCM7XX_CLK_S_PLL0,
@@ -328,7 +311,6 @@ static const char * const dvcssel_mux_parents[] __initconst = {
NPCM7XX_CLK_S_PLL2,
};
-
static const struct npcm7xx_clk_pll_data npcm7xx_plls[] __initconst = {
{NPCM7XX_PLLCON0, NPCM7XX_CLK_S_PLL0, NPCM7XX_CLK_S_REFCLK, 0, -1},
@@ -342,7 +324,6 @@ static const struct npcm7xx_clk_pll_data npcm7xx_plls[] __initconst = {
NPCM7XX_CLK_S_REFCLK, 0, -1},
};
-
static const struct npcm7xx_clk_mux_data npcm7xx_muxes[] __initconst = {
{0, GENMASK(1, 0), cpuck_mux_table, NPCM7XX_CLK_S_CPU_MUX,
cpuck_mux_parents, ARRAY_SIZE(cpuck_mux_parents), CLK_IS_CRITICAL,
@@ -387,7 +368,6 @@ static const struct npcm7xx_clk_div_fixed_data npcm7xx_divs_fx[] __initconst = {
{ 1, 2, NPCM7XX_CLK_S_PLL2_DIV2, NPCM7XX_CLK_S_PLL2, 0, -1},
};
-
/* configurable dividers: */
static const struct npcm7xx_clk_div_data npcm7xx_divs[] __initconst = {
{NPCM7XX_CLKDIV1, 28, 3, NPCM7XX_CLK_S_ADC,
@@ -455,7 +435,6 @@ static const struct npcm7xx_clk_div_data npcm7xx_divs[] __initconst = {
};
-
static const struct npcm7xx_clk_gate_data npcm7xx_gates[] __initconst = {
{NPCM7XX_CLKEN1, 31, "smb1-gate", NPCM7XX_CLK_S_APB2, 0},
{NPCM7XX_CLKEN1, 30, "smb0-gate", NPCM7XX_CLK_S_APB2, 0},
@@ -557,23 +536,17 @@ static const struct npcm7xx_clk_gate_data npcm7xx_gates[] __initconst = {
{NPCM7XX_CLKEN3, 0, "pwmm1-gate", NPCM7XX_CLK_S_APB3, 0},
};
-
-
static DEFINE_SPINLOCK(npcm7xx_clk_lock);
-
static void __init npcm7xx_clk_init(struct device_node *clk_np)
{
struct clk_hw_onecell_data *npcm7xx_clk_data;
void __iomem *clk_base;
struct resource res;
struct clk_hw *hw;
- struct clk *clk;
int ret;
int i;
- clk_base = NULL;
-
ret = of_address_to_resource(clk_np, 0, &res);
if (ret) {
pr_err("%s: failed to get resource, ret %d\n", clk_np->name,
@@ -581,49 +554,20 @@ static void __init npcm7xx_clk_init(struct device_node *clk_np)
return;
}
-
clk_base = ioremap(res.start, resource_size(&res));
if (IS_ERR(clk_base))
goto npcm7xx_init_error;
-
npcm7xx_clk_data = kzalloc(sizeof(*npcm7xx_clk_data->hws) *
NPCM7XX_NUM_CLOCKS + sizeof(npcm7xx_clk_data), GFP_KERNEL);
-
- npcm7xx_clk_data->num = 0;
-
- if (!npcm7xx_clk_data->hws) {
- pr_err("Can't alloc npcm7xx_clk_data\n");
+ if (!npcm7xx_clk_data)
goto npcm7xx_init_np_err;
- }
npcm7xx_clk_data->num = NPCM7XX_NUM_CLOCKS;
for (i = 0; i < NPCM7XX_NUM_CLOCKS; i++)
npcm7xx_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER);
- /* Read fixed clocks. These 3 clocks must be defined in DT */
- clk = of_clk_get_by_name(clk_np, NPCM7XX_CLK_S_REFCLK);
- if (!IS_ERR(clk)) {
- pr_err("failed to find external REFCLK: %ld\n",
- PTR_ERR(clk));
- clk_put(clk);
- }
-
- clk = of_clk_get_by_name(clk_np, NPCM7XX_CLK_S_SYSBYPCK);
- if (!IS_ERR(clk)) {
- pr_err("failed to find external SYSBYPCK: %ld\n",
- PTR_ERR(clk));
- clk_put(clk);
- }
-
- clk = of_clk_get_by_name(clk_np, NPCM7XX_CLK_S_MCBYPCK);
- if (!IS_ERR(clk)) {
- pr_err("failed to find external MCBYPCK: %ld\n",
- PTR_ERR(clk));
- clk_put(clk);
- }
-
/* Register plls */
for (i = 0; i < ARRAY_SIZE(npcm7xx_plls); i++) {
const struct npcm7xx_clk_pll_data *pll_data = &npcm7xx_plls[i];
@@ -640,18 +584,16 @@ static void __init npcm7xx_clk_init(struct device_node *clk_np)
}
/* Register fixed dividers */
- clk = clk_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL1_DIV2,
+ hw = clk_hw_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL1_DIV2,
NPCM7XX_CLK_S_PLL1, 0, 1, 2);
- if (IS_ERR(clk)) {
+ if (IS_ERR(hw)) {
pr_err("npcm7xx_clk: Can't register fixed div\n");
goto npcm7xx_init_fail;
}
-
- clk = clk_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL2_DIV2,
+ hw = clk_hw_register_fixed_factor(NULL, NPCM7XX_CLK_S_PLL2_DIV2,
NPCM7XX_CLK_S_PLL2, 0, 1, 2);
-
- if (IS_ERR(clk)) {
+ if (IS_ERR(hw)) {
pr_err("npcm7xx_clk: Can't register div2\n");
goto npcm7xx_init_fail;
}
@@ -676,7 +618,7 @@ static void __init npcm7xx_clk_init(struct device_node *clk_np)
npcm7xx_clk_data->hws[mux_data->onecell_idx] = hw;
}
- /* Register clock dividers specified in npcm7xx_divs. */
+ /* Register clock dividers specified in npcm7xx_divs */
for (i = 0; i < ARRAY_SIZE(npcm7xx_divs); i++) {
const struct npcm7xx_clk_div_data *div_data = &npcm7xx_divs[i];
@@ -700,23 +642,15 @@ static void __init npcm7xx_clk_init(struct device_node *clk_np)
if (ret)
pr_err("failed to add DT provider: %d\n", ret);
-
of_node_put(clk_np);
return;
npcm7xx_init_fail:
- if (npcm7xx_clk_data->num)
- kfree(npcm7xx_clk_data->hws);
+ kfree(npcm7xx_clk_data->hws);
npcm7xx_init_np_err:
- if (clk_base != NULL)
- iounmap(clk_base);
+ iounmap(clk_base);
npcm7xx_init_error:
of_node_put(clk_np);
- pr_err("clk setup fail\n");
}
-
CLK_OF_DECLARE(npcm7xx_clk_init, "nuvoton,npcm750-clk", npcm7xx_clk_init);
-
-
-
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