It's better to use efuse_xlate to extract the differentiated part
regarding different SoC.
Signed-off-by: Shuosheng Huang <[email protected]>
---
drivers/cpufreq/sun50i-cpufreq-nvmem.c | 82 ++++++++++++++++----------
1 file changed, 51 insertions(+), 31 deletions(-)
diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
index 9907a165135b..3c0531938d1a 100644
--- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
+++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
@@ -19,24 +19,51 @@
#define MAX_NAME_LEN 7
-#define NVMEM_MASK 0x7
-#define NVMEM_SHIFT 5
+#define SUN50I_H6_NVMEM_MASK 0x7
+#define SUN50I_H6_NVMEM_SHIFT 5
+
+struct sunxi_cpufreq_soc_data {
+ int (*efuse_xlate)(struct nvmem_cell *speedbin_nvmem);
+};
static struct platform_device *cpufreq_dt_pdev, *sun50i_cpufreq_pdev;
+static int sun50i_h6_efuse_xlate(struct nvmem_cell *speedbin_nvmem)
+{
+ size_t len;
+ u32 *speedbin;
+ u32 efuse_value;
+
+ speedbin = nvmem_cell_read(speedbin_nvmem, &len);
+ if (IS_ERR(speedbin))
+ return PTR_ERR(speedbin);
+
+ efuse_value = (*(u32 *)speedbin >> SUN50I_H6_NVMEM_SHIFT) &
+ SUN50I_H6_NVMEM_MASK;
+ kfree(speedbin);
+ /*
+ * We treat unexpected efuse values as if the SoC was from
+ * the slowest bin. Expected efuse values are 1-3, slowest
+ * to fastest.
+ */
+ if (efuse_value >= 1 && efuse_value <= 3)
+ return efuse_value - 1;
+ else
+ return 0;
+}
+
/**
* sun50i_cpufreq_get_efuse() - Determine speed grade from efuse value
- * @versions: Set to the value parsed from efuse
+ * @soc_data: pointer to sunxi_cpufreq_soc_data context
*
* Returns 0 if success.
*/
-static int sun50i_cpufreq_get_efuse(u32 *versions)
+static int sun50i_cpufreq_get_efuse(const struct sunxi_cpufreq_soc_data *soc_data)
{
struct nvmem_cell *speedbin_nvmem;
struct device_node *np;
struct device *cpu_dev;
- u32 *speedbin, efuse_value;
- size_t len;
+ int versions;
int ret;
cpu_dev = get_cpu_device(0);
@@ -63,43 +90,33 @@ static int sun50i_cpufreq_get_efuse(u32 *versions)
return PTR_ERR(speedbin_nvmem);
}
- speedbin = nvmem_cell_read(speedbin_nvmem, &len);
+ versions = soc_data->efuse_xlate(speedbin_nvmem);
nvmem_cell_put(speedbin_nvmem);
- if (IS_ERR(speedbin))
- return PTR_ERR(speedbin);
-
- efuse_value = (*speedbin >> NVMEM_SHIFT) & NVMEM_MASK;
-
- /*
- * We treat unexpected efuse values as if the SoC was from
- * the slowest bin. Expected efuse values are 1-3, slowest
- * to fastest.
- */
- if (efuse_value >= 1 && efuse_value <= 3)
- *versions = efuse_value - 1;
- else
- *versions = 0;
- kfree(speedbin);
- return 0;
+ return versions;
};
static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
{
+ const struct of_device_id *match;
struct opp_table **opp_tables;
char name[MAX_NAME_LEN];
unsigned int cpu;
- u32 speed = 0;
+ int speed = 0;
int ret;
+ match = dev_get_platdata(&pdev->dev);
+ if (!match)
+ return -EINVAL;
+
opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables),
GFP_KERNEL);
if (!opp_tables)
return -ENOMEM;
- ret = sun50i_cpufreq_get_efuse(&speed);
- if (ret)
- return ret;
+ speed = sun50i_cpufreq_get_efuse(match->data);
+ if (speed < 0)
+ return speed;
snprintf(name, MAX_NAME_LEN, "speed%d", speed);
@@ -163,8 +180,12 @@ static struct platform_driver sun50i_cpufreq_driver = {
},
};
+static const struct sunxi_cpufreq_soc_data sun50i_h6_data = {
+ .efuse_xlate = sun50i_h6_efuse_xlate,
+};
+
static const struct of_device_id sun50i_cpufreq_match_list[] = {
- { .compatible = "allwinner,sun50i-h6" },
+ { .compatible = "allwinner,sun50i-h6", .data = &sun50i_h6_data },
{}
};
@@ -198,9 +219,8 @@ static int __init sun50i_cpufreq_init(void)
if (unlikely(ret < 0))
return ret;
- sun50i_cpufreq_pdev =
- platform_device_register_simple("sun50i-cpufreq-nvmem",
- -1, NULL, 0);
+ sun50i_cpufreq_pdev = platform_device_register_data(NULL,
+ "sun50i-cpufreq-nvmem", -1, match, sizeof(*match));
ret = PTR_ERR_OR_ZERO(sun50i_cpufreq_pdev);
if (ret == 0)
return 0;
--
2.28.0
Please use --thread=shallow while creating the patches, I use the following
options normally, so they appear as a thread.
git format-patch -C -M --thread=shallow
--
viresh
Hi,
On Tue, Dec 08, 2020 at 03:19:28PM +0800, Shuosheng Huang wrote:
> It's better to use efuse_xlate to extract the differentiated part
> regarding different SoC.
>
> Signed-off-by: Shuosheng Huang <[email protected]>
Please wait a bit for reviews before sending a new version. You've sent
three versions in a day, and I haven't reviewed the first one.
Also, please put a changelog in the cover letter, we don't have any way
to tell what is the difference between v1, v2, v3 and v4.
> ---
> drivers/cpufreq/sun50i-cpufreq-nvmem.c | 82 ++++++++++++++++----------
> 1 file changed, 51 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> index 9907a165135b..3c0531938d1a 100644
> --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> @@ -19,24 +19,51 @@
>
> #define MAX_NAME_LEN 7
>
> -#define NVMEM_MASK 0x7
> -#define NVMEM_SHIFT 5
> +#define SUN50I_H6_NVMEM_MASK 0x7
> +#define SUN50I_H6_NVMEM_SHIFT 5
> +
> +struct sunxi_cpufreq_soc_data {
> + int (*efuse_xlate)(struct nvmem_cell *speedbin_nvmem);
> +};
>
> static struct platform_device *cpufreq_dt_pdev, *sun50i_cpufreq_pdev;
>
> +static int sun50i_h6_efuse_xlate(struct nvmem_cell *speedbin_nvmem)
> +{
> + size_t len;
> + u32 *speedbin;
> + u32 efuse_value;
> +
> + speedbin = nvmem_cell_read(speedbin_nvmem, &len);
> + if (IS_ERR(speedbin))
> + return PTR_ERR(speedbin);
> +
> + efuse_value = (*(u32 *)speedbin >> SUN50I_H6_NVMEM_SHIFT) &
> + SUN50I_H6_NVMEM_MASK;
> + kfree(speedbin);
> + /*
> + * We treat unexpected efuse values as if the SoC was from
> + * the slowest bin. Expected efuse values are 1-3, slowest
> + * to fastest.
> + */
> + if (efuse_value >= 1 && efuse_value <= 3)
> + return efuse_value - 1;
> + else
> + return 0;
> +}
> +
> /**
> * sun50i_cpufreq_get_efuse() - Determine speed grade from efuse value
> - * @versions: Set to the value parsed from efuse
> + * @soc_data: pointer to sunxi_cpufreq_soc_data context
> *
> * Returns 0 if success.
> */
> -static int sun50i_cpufreq_get_efuse(u32 *versions)
> +static int sun50i_cpufreq_get_efuse(const struct sunxi_cpufreq_soc_data *soc_data)
> {
> struct nvmem_cell *speedbin_nvmem;
> struct device_node *np;
> struct device *cpu_dev;
> - u32 *speedbin, efuse_value;
> - size_t len;
> + int versions;
> int ret;
>
> cpu_dev = get_cpu_device(0);
> @@ -63,43 +90,33 @@ static int sun50i_cpufreq_get_efuse(u32 *versions)
> return PTR_ERR(speedbin_nvmem);
> }
>
> - speedbin = nvmem_cell_read(speedbin_nvmem, &len);
> + versions = soc_data->efuse_xlate(speedbin_nvmem);
> nvmem_cell_put(speedbin_nvmem);
> - if (IS_ERR(speedbin))
> - return PTR_ERR(speedbin);
> -
> - efuse_value = (*speedbin >> NVMEM_SHIFT) & NVMEM_MASK;
> -
> - /*
> - * We treat unexpected efuse values as if the SoC was from
> - * the slowest bin. Expected efuse values are 1-3, slowest
> - * to fastest.
> - */
> - if (efuse_value >= 1 && efuse_value <= 3)
> - *versions = efuse_value - 1;
> - else
> - *versions = 0;
>
> - kfree(speedbin);
> - return 0;
> + return versions;
> };
>
> static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
> {
> + const struct of_device_id *match;
> struct opp_table **opp_tables;
> char name[MAX_NAME_LEN];
> unsigned int cpu;
> - u32 speed = 0;
> + int speed = 0;
> int ret;
>
> + match = dev_get_platdata(&pdev->dev);
> + if (!match)
> + return -EINVAL;
> +
> opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables),
> GFP_KERNEL);
> if (!opp_tables)
> return -ENOMEM;
>
> - ret = sun50i_cpufreq_get_efuse(&speed);
> - if (ret)
> - return ret;
> + speed = sun50i_cpufreq_get_efuse(match->data);
> + if (speed < 0)
> + return speed;
>
> snprintf(name, MAX_NAME_LEN, "speed%d", speed);
>
> @@ -163,8 +180,12 @@ static struct platform_driver sun50i_cpufreq_driver = {
> },
> };
>
> +static const struct sunxi_cpufreq_soc_data sun50i_h6_data = {
> + .efuse_xlate = sun50i_h6_efuse_xlate,
> +};
> +
> static const struct of_device_id sun50i_cpufreq_match_list[] = {
> - { .compatible = "allwinner,sun50i-h6" },
> + { .compatible = "allwinner,sun50i-h6", .data = &sun50i_h6_data },
> {}
> };
>
> @@ -198,9 +219,8 @@ static int __init sun50i_cpufreq_init(void)
> if (unlikely(ret < 0))
> return ret;
>
> - sun50i_cpufreq_pdev =
> - platform_device_register_simple("sun50i-cpufreq-nvmem",
> - -1, NULL, 0);
> + sun50i_cpufreq_pdev = platform_device_register_data(NULL,
> + "sun50i-cpufreq-nvmem", -1, match, sizeof(*match));
The alignment here raises a checkpatch warning with --strict
Maxime
On 12/8/20 1:19 AM, Shuosheng Huang wrote:
> It's better to use efuse_xlate to extract the differentiated part
> regarding different SoC.
>
> Signed-off-by: Shuosheng Huang <[email protected]>
> ---
> drivers/cpufreq/sun50i-cpufreq-nvmem.c | 82 ++++++++++++++++----------
> 1 file changed, 51 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> index 9907a165135b..3c0531938d1a 100644
> --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> @@ -19,24 +19,51 @@
>
> #define MAX_NAME_LEN 7
>
> -#define NVMEM_MASK 0x7
> -#define NVMEM_SHIFT 5
> +#define SUN50I_H6_NVMEM_MASK 0x7
> +#define SUN50I_H6_NVMEM_SHIFT 5
> +
> +struct sunxi_cpufreq_soc_data {
> + int (*efuse_xlate)(struct nvmem_cell *speedbin_nvmem);
> +};
>
> static struct platform_device *cpufreq_dt_pdev, *sun50i_cpufreq_pdev;
>
> +static int sun50i_h6_efuse_xlate(struct nvmem_cell *speedbin_nvmem)
> +{
> + size_t len;
> + u32 *speedbin;
> + u32 efuse_value;
> +
> + speedbin = nvmem_cell_read(speedbin_nvmem, &len);
> + if (IS_ERR(speedbin))
> + return PTR_ERR(speedbin);
> +
> + efuse_value = (*(u32 *)speedbin >> SUN50I_H6_NVMEM_SHIFT) &
> + SUN50I_H6_NVMEM_MASK;
This does not need a cast. speedbin is already a pointer to u32.
With the cast removed:
Reviewed-by: Samuel Holland <[email protected]>
Tested-by: Samuel Holland <[email protected]> # H6
> + kfree(speedbin);
> + /*
> + * We treat unexpected efuse values as if the SoC was from
> + * the slowest bin. Expected efuse values are 1-3, slowest
> + * to fastest.
> + */
> + if (efuse_value >= 1 && efuse_value <= 3)
> + return efuse_value - 1;
> + else
> + return 0;
> +}
> +
> /**
> * sun50i_cpufreq_get_efuse() - Determine speed grade from efuse value
> - * @versions: Set to the value parsed from efuse
> + * @soc_data: pointer to sunxi_cpufreq_soc_data context
> *
> * Returns 0 if success.
> */
> -static int sun50i_cpufreq_get_efuse(u32 *versions)
> +static int sun50i_cpufreq_get_efuse(const struct sunxi_cpufreq_soc_data *soc_data)
> {
> struct nvmem_cell *speedbin_nvmem;
> struct device_node *np;
> struct device *cpu_dev;
> - u32 *speedbin, efuse_value;
> - size_t len;
> + int versions;
> int ret;
>
> cpu_dev = get_cpu_device(0);
> @@ -63,43 +90,33 @@ static int sun50i_cpufreq_get_efuse(u32 *versions)
> return PTR_ERR(speedbin_nvmem);
> }
>
> - speedbin = nvmem_cell_read(speedbin_nvmem, &len);
> + versions = soc_data->efuse_xlate(speedbin_nvmem);
> nvmem_cell_put(speedbin_nvmem);
> - if (IS_ERR(speedbin))
> - return PTR_ERR(speedbin);
> -
> - efuse_value = (*speedbin >> NVMEM_SHIFT) & NVMEM_MASK;
> -
> - /*
> - * We treat unexpected efuse values as if the SoC was from
> - * the slowest bin. Expected efuse values are 1-3, slowest
> - * to fastest.
> - */
> - if (efuse_value >= 1 && efuse_value <= 3)
> - *versions = efuse_value - 1;
> - else
> - *versions = 0;
>
> - kfree(speedbin);
> - return 0;
> + return versions;
> };
>
> static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
> {
> + const struct of_device_id *match;
> struct opp_table **opp_tables;
> char name[MAX_NAME_LEN];
> unsigned int cpu;
> - u32 speed = 0;
> + int speed = 0;
> int ret;
>
> + match = dev_get_platdata(&pdev->dev);
> + if (!match)
> + return -EINVAL;
> +
> opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables),
> GFP_KERNEL);
> if (!opp_tables)
> return -ENOMEM;
>
> - ret = sun50i_cpufreq_get_efuse(&speed);
> - if (ret)
> - return ret;
> + speed = sun50i_cpufreq_get_efuse(match->data);
> + if (speed < 0)
> + return speed;
>
> snprintf(name, MAX_NAME_LEN, "speed%d", speed);
>
> @@ -163,8 +180,12 @@ static struct platform_driver sun50i_cpufreq_driver = {
> },
> };
>
> +static const struct sunxi_cpufreq_soc_data sun50i_h6_data = {
> + .efuse_xlate = sun50i_h6_efuse_xlate,
> +};
> +
> static const struct of_device_id sun50i_cpufreq_match_list[] = {
> - { .compatible = "allwinner,sun50i-h6" },
> + { .compatible = "allwinner,sun50i-h6", .data = &sun50i_h6_data },
> {}
> };
>
> @@ -198,9 +219,8 @@ static int __init sun50i_cpufreq_init(void)
> if (unlikely(ret < 0))
> return ret;
>
> - sun50i_cpufreq_pdev =
> - platform_device_register_simple("sun50i-cpufreq-nvmem",
> - -1, NULL, 0);
> + sun50i_cpufreq_pdev = platform_device_register_data(NULL,
> + "sun50i-cpufreq-nvmem", -1, match, sizeof(*match));
> ret = PTR_ERR_OR_ZERO(sun50i_cpufreq_pdev);
> if (ret == 0)
> return 0;
>