diff options
Diffstat (limited to 'drivers/nvmem')
| -rw-r--r-- | drivers/nvmem/sunxi_sid.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/nvmem/sunxi_sid.c b/drivers/nvmem/sunxi_sid.c index 1567ccca8de3..69524b67007f 100644 --- a/drivers/nvmem/sunxi_sid.c +++ b/drivers/nvmem/sunxi_sid.c @@ -20,6 +20,7 @@ #include <linux/module.h> #include <linux/nvmem-provider.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/random.h> @@ -32,6 +33,10 @@ static struct nvmem_config econfig = { .owner = THIS_MODULE, }; +struct sunxi_sid_cfg { + u32 size; +}; + struct sunxi_sid { void __iomem *base; }; @@ -72,18 +77,24 @@ static int sunxi_sid_probe(struct platform_device *pdev) struct sunxi_sid *sid; int ret, i, size; char *randomness; + const struct sunxi_sid_cfg *cfg; sid = devm_kzalloc(dev, sizeof(*sid), GFP_KERNEL); if (!sid) return -ENOMEM; + cfg = of_device_get_match_data(dev); + if (!cfg) + return -EINVAL; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); sid->base = devm_ioremap_resource(dev, res); if (IS_ERR(sid->base)) return PTR_ERR(sid->base); - size = resource_size(res) - 1; - econfig.size = resource_size(res); + size = cfg->size; + + econfig.size = size; econfig.dev = dev; econfig.reg_read = sunxi_sid_read; econfig.priv = sid; @@ -119,9 +130,17 @@ static int sunxi_sid_remove(struct platform_device *pdev) return nvmem_unregister(nvmem); } +static const struct sunxi_sid_cfg sun4i_a10_cfg = { + .size = 0x10, +}; + +static const struct sunxi_sid_cfg sun7i_a20_cfg = { + .size = 0x200, +}; + static const struct of_device_id sunxi_sid_of_match[] = { - { .compatible = "allwinner,sun4i-a10-sid" }, - { .compatible = "allwinner,sun7i-a20-sid" }, + { .compatible = "allwinner,sun4i-a10-sid", .data = &sun4i_a10_cfg }, + { .compatible = "allwinner,sun7i-a20-sid", .data = &sun7i_a20_cfg }, {/* sentinel */}, }; MODULE_DEVICE_TABLE(of, sunxi_sid_of_match); |