diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/809-v5.19-0008-nvmem-sfp-Use-regmap.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/809-v5.19-0008-nvmem-sfp-Use-regmap.patch | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/target/linux/generic/backport-5.10/809-v5.19-0008-nvmem-sfp-Use-regmap.patch b/target/linux/generic/backport-5.10/809-v5.19-0008-nvmem-sfp-Use-regmap.patch deleted file mode 100644 index e187238ca3..0000000000 --- a/target/linux/generic/backport-5.10/809-v5.19-0008-nvmem-sfp-Use-regmap.patch +++ /dev/null @@ -1,109 +0,0 @@ -From 943eadbdb11314b41eacbcc484dfb7f93e271ff4 Mon Sep 17 00:00:00 2001 -From: Sean Anderson <sean.anderson@seco.com> -Date: Fri, 29 Apr 2022 17:27:00 +0100 -Subject: [PATCH] nvmem: sfp: Use regmap - -This converts the SFP driver to use regmap. This will allow easily -supporting devices with different endians. We disallow byte-level -access, as regmap_bulk_read doesn't support it (and it's unclear what -the correct result would be when we have an endianness difference). - -Signed-off-by: Sean Anderson <sean.anderson@seco.com> -Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> -Link: https://lore.kernel.org/r/20220429162701.2222-16-srinivas.kandagatla@linaro.org -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/nvmem/Kconfig | 1 + - drivers/nvmem/layerscape-sfp.c | 30 ++++++++++++++++++++++-------- - 2 files changed, 23 insertions(+), 8 deletions(-) - ---- a/drivers/nvmem/Kconfig -+++ b/drivers/nvmem/Kconfig -@@ -304,6 +304,7 @@ config NVMEM_LAYERSCAPE_SFP - tristate "Layerscape SFP (Security Fuse Processor) support" - depends on ARCH_LAYERSCAPE || COMPILE_TEST - depends on HAS_IOMEM -+ select REGMAP_MMIO - help - This driver provides support to read the eFuses on Freescale - Layerscape SoC's. For example, the vendor provides a per part ---- a/drivers/nvmem/layerscape-sfp.c -+++ b/drivers/nvmem/layerscape-sfp.c -@@ -13,15 +13,17 @@ - #include <linux/nvmem-provider.h> - #include <linux/platform_device.h> - #include <linux/property.h> -+#include <linux/regmap.h> - - #define LAYERSCAPE_SFP_OTP_OFFSET 0x0200 - - struct layerscape_sfp_priv { -- void __iomem *base; -+ struct regmap *regmap; - }; - - struct layerscape_sfp_data { - int size; -+ enum regmap_endian endian; - }; - - static int layerscape_sfp_read(void *context, unsigned int offset, void *val, -@@ -29,15 +31,16 @@ static int layerscape_sfp_read(void *con - { - struct layerscape_sfp_priv *priv = context; - -- memcpy_fromio(val, priv->base + LAYERSCAPE_SFP_OTP_OFFSET + offset, -- bytes); -- -- return 0; -+ return regmap_bulk_read(priv->regmap, -+ LAYERSCAPE_SFP_OTP_OFFSET + offset, val, -+ bytes / 4); - } - - static struct nvmem_config layerscape_sfp_nvmem_config = { - .name = "fsl-sfp", - .reg_read = layerscape_sfp_read, -+ .word_size = 4, -+ .stride = 4, - }; - - static int layerscape_sfp_probe(struct platform_device *pdev) -@@ -45,16 +48,26 @@ static int layerscape_sfp_probe(struct p - const struct layerscape_sfp_data *data; - struct layerscape_sfp_priv *priv; - struct nvmem_device *nvmem; -+ struct regmap_config config = { 0 }; -+ void __iomem *base; - - priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - -- priv->base = devm_platform_ioremap_resource(pdev, 0); -- if (IS_ERR(priv->base)) -- return PTR_ERR(priv->base); -+ base = devm_platform_ioremap_resource(pdev, 0); -+ if (IS_ERR(base)) -+ return PTR_ERR(base); - - data = device_get_match_data(&pdev->dev); -+ config.reg_bits = 32; -+ config.reg_stride = 4; -+ config.val_bits = 32; -+ config.val_format_endian = data->endian; -+ config.max_register = LAYERSCAPE_SFP_OTP_OFFSET + data->size - 4; -+ priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, &config); -+ if (IS_ERR(priv->regmap)) -+ return PTR_ERR(priv->regmap); - - layerscape_sfp_nvmem_config.size = data->size; - layerscape_sfp_nvmem_config.dev = &pdev->dev; -@@ -67,6 +80,7 @@ static int layerscape_sfp_probe(struct p - - static const struct layerscape_sfp_data ls1028a_data = { - .size = 0x88, -+ .endian = REGMAP_ENDIAN_LITTLE, - }; - - static const struct of_device_id layerscape_sfp_dt_ids[] = { |