Re: [PATCH] x86: new Intel Atom SoC power management controller driver
From: Joe Perches
Date: Thu Mar 06 2014 - 21:21:44 EST
On Fri, 2014-03-07 at 10:08 +0800, Li, Aubrey wrote:
> The Power Management Controller (PMC) controls many of the power
> management features present in the SoC. This driver provides
> interface to configure the Power Management Controller (PMC).
More trivial notes.
Nothing really that should stop this from being applied.
> diff --git a/arch/x86/kernel/pmc_atom.c b/arch/x86/kernel/pmc_atom.c
I still think that
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
is useful here.
> +#include <linux/module.h>
> +#include <linux/init.h>
[]
> +#define DRIVER_NAME "pmc_atom"
Maybe
#define DRIVER_NAME KBUILD_MODNAME
too
> +struct pmc_dev_map {
> + char *name;
> + u32 bit_mask;
> +};
>
> +static struct pmc_dev_map dev_map[] = {
static const to reduce data?
struct pmc_dev_map {
const char *name;
u32 bit_mask;
};
> +static struct pmc_dev_map dev_map[] = {
static const struct pmc_dev_map dev_map[] = {
> + {"0 - LPSS1_F0_DMA", BIT_LPSS1_F0_DMA},
> + {"1 - LPSS1_F1_PWM1", BIT_LPSS1_F1_PWM1},
[]
> +static void pmc_power_off(void)
> +{
[]
> + pr_info("%s: Preparing to enter system sleep state S5\n", DRIVER_NAME);
This is larger code than using pr_fmt
> +#ifdef CONFIG_DEBUG_FS
> +static int pmc_dev_state_show(struct seq_file *s, void *unused)
> +{
[]
> + seq_printf(s, "Dev: %-32s\tState: %s [%s]\n",
> + dev_map[dev_index].name,
> + dev_map[dev_index].bit_mask & func_dis_index ?
> + "Disabled" : "Enabled ",
> + (d3_sts_index & dev_map[dev_index].bit_mask) ?
> + "D3" : "D0");
This reverses the order of the 1st and 2nd trigraph test
and to me would be easier to read like:
seq_printf(s, "Dev: %-32s\tState: %s [%s]\n",
dev_map[dev_index].name,
dev_map[dev_index].bit_mask & func_dis_index ?
"Disabled" : "Enabled ",
dev_map[dev_index].bit_mask & d3_sts_index ?
"D3" : "D0");
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