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| author | Srinath Mannam <srinath.mannam@broadcom.com> | 2019-01-28 15:54:55 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-31 16:24:14 +0100 |
| commit | 1694155573702cb11e59535e4e56478afda7493f (patch) | |
| tree | 08a2171cd9c4d8b3ce4ceee6a9d821a841034736 /drivers/nvmem/bcm-ocotp.c | |
| parent | 996e39bb03ba0ec31dbe8c1c7df11130ba9de639 (diff) | |
| download | lwn-1694155573702cb11e59535e4e56478afda7493f.tar.gz lwn-1694155573702cb11e59535e4e56478afda7493f.zip | |
nvmem: bcm-ocotp: Add ACPI support to BCM OCOTP
Add ACPI support to bcm ocotp driver
This patch is based on Linux-4.20-rc7.
Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem/bcm-ocotp.c')
| -rw-r--r-- | drivers/nvmem/bcm-ocotp.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/nvmem/bcm-ocotp.c b/drivers/nvmem/bcm-ocotp.c index 4159b3f41d79..a8097511582a 100644 --- a/drivers/nvmem/bcm-ocotp.c +++ b/drivers/nvmem/bcm-ocotp.c @@ -11,13 +11,14 @@ * GNU General Public License for more details. */ +#include <linux/acpi.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/io.h> #include <linux/module.h> #include <linux/nvmem-provider.h> #include <linux/of.h> -#include <linux/of_address.h> +#include <linux/of_device.h> #include <linux/platform_device.h> /* @@ -78,9 +79,9 @@ static struct otpc_map otp_map_v2 = { }; struct otpc_priv { - struct device *dev; - void __iomem *base; - struct otpc_map *map; + struct device *dev; + void __iomem *base; + const struct otpc_map *map; struct nvmem_config *config; }; @@ -237,16 +238,22 @@ static struct nvmem_config bcm_otpc_nvmem_config = { }; static const struct of_device_id bcm_otpc_dt_ids[] = { - { .compatible = "brcm,ocotp" }, - { .compatible = "brcm,ocotp-v2" }, + { .compatible = "brcm,ocotp", .data = &otp_map }, + { .compatible = "brcm,ocotp-v2", .data = &otp_map_v2 }, { }, }; MODULE_DEVICE_TABLE(of, bcm_otpc_dt_ids); +static const struct acpi_device_id bcm_otpc_acpi_ids[] = { + { .id = "BRCM0700", .driver_data = (kernel_ulong_t)&otp_map }, + { .id = "BRCM0701", .driver_data = (kernel_ulong_t)&otp_map_v2 }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(acpi, bcm_otpc_acpi_ids); + static int bcm_otpc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *dn = dev->of_node; struct resource *res; struct otpc_priv *priv; struct nvmem_device *nvmem; @@ -257,14 +264,9 @@ static int bcm_otpc_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; - if (of_device_is_compatible(dev->of_node, "brcm,ocotp")) - priv->map = &otp_map; - else if (of_device_is_compatible(dev->of_node, "brcm,ocotp-v2")) - priv->map = &otp_map_v2; - else { - dev_err(dev, "%s otpc config map not defined\n", __func__); - return -EINVAL; - } + priv->map = device_get_match_data(dev); + if (!priv->map) + return -ENODEV; /* Get OTP base address register. */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -281,7 +283,7 @@ static int bcm_otpc_probe(struct platform_device *pdev) reset_start_bit(priv->base); /* Read size of memory in words. */ - err = of_property_read_u32(dn, "brcm,ocotp-size", &num_words); + err = device_property_read_u32(dev, "brcm,ocotp-size", &num_words); if (err) { dev_err(dev, "size parameter not specified\n"); return -EINVAL; @@ -294,7 +296,7 @@ static int bcm_otpc_probe(struct platform_device *pdev) bcm_otpc_nvmem_config.dev = dev; bcm_otpc_nvmem_config.priv = priv; - if (of_device_is_compatible(dev->of_node, "brcm,ocotp-v2")) { + if (priv->map == &otp_map_v2) { bcm_otpc_nvmem_config.word_size = 8; bcm_otpc_nvmem_config.stride = 8; } @@ -315,6 +317,7 @@ static struct platform_driver bcm_otpc_driver = { .driver = { .name = "brcm-otpc", .of_match_table = bcm_otpc_dt_ids, + .acpi_match_table = ACPI_PTR(bcm_otpc_acpi_ids), }, }; module_platform_driver(bcm_otpc_driver); |