82 lines
2.7 KiB
Diff
82 lines
2.7 KiB
Diff
From 6c56a82d7895a213a43182a5d01a21a906a79847 Mon Sep 17 00:00:00 2001
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From: Michael Walle <michael@walle.cc>
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Date: Tue, 4 Apr 2023 18:21:26 +0100
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Subject: [PATCH] nvmem: imx-ocotp: replace global post processing with layouts
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In preparation of retiring the global post processing hook change this
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driver to use layouts. The layout will be supplied during registration
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and will be used to add the post processing hook to all added cells.
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Signed-off-by: Michael Walle <michael@walle.cc>
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Tested-by: Michael Walle <michael@walle.cc> # on kontron-pitx-imx8m
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Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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Link: https://lore.kernel.org/r/20230404172148.82422-19-srinivas.kandagatla@linaro.org
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Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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---
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drivers/nvmem/imx-ocotp.c | 30 +++++++++++++++++++-----------
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1 file changed, 19 insertions(+), 11 deletions(-)
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--- a/drivers/nvmem/imx-ocotp.c
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+++ b/drivers/nvmem/imx-ocotp.c
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@@ -225,18 +225,13 @@ read_end:
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static int imx_ocotp_cell_pp(void *context, const char *id, int index,
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unsigned int offset, void *data, size_t bytes)
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{
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- struct ocotp_priv *priv = context;
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+ u8 *buf = data;
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+ int i;
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/* Deal with some post processing of nvmem cell data */
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- if (id && !strcmp(id, "mac-address")) {
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- if (priv->params->reverse_mac_address) {
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- u8 *buf = data;
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- int i;
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-
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- for (i = 0; i < bytes/2; i++)
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- swap(buf[i], buf[bytes - i - 1]);
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- }
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- }
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+ if (id && !strcmp(id, "mac-address"))
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+ for (i = 0; i < bytes / 2; i++)
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+ swap(buf[i], buf[bytes - i - 1]);
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return 0;
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}
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@@ -488,7 +483,6 @@ static struct nvmem_config imx_ocotp_nvm
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.stride = 1,
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.reg_read = imx_ocotp_read,
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.reg_write = imx_ocotp_write,
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- .cell_post_process = imx_ocotp_cell_pp,
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};
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static const struct ocotp_params imx6q_params = {
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@@ -595,6 +589,17 @@ static const struct of_device_id imx_oco
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};
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MODULE_DEVICE_TABLE(of, imx_ocotp_dt_ids);
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+static void imx_ocotp_fixup_cell_info(struct nvmem_device *nvmem,
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+ struct nvmem_layout *layout,
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+ struct nvmem_cell_info *cell)
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+{
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+ cell->read_post_process = imx_ocotp_cell_pp;
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+}
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+
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+struct nvmem_layout imx_ocotp_layout = {
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+ .fixup_cell_info = imx_ocotp_fixup_cell_info,
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+};
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+
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static int imx_ocotp_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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@@ -619,6 +624,9 @@ static int imx_ocotp_probe(struct platfo
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imx_ocotp_nvmem_config.size = 4 * priv->params->nregs;
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imx_ocotp_nvmem_config.dev = dev;
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imx_ocotp_nvmem_config.priv = priv;
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+ if (priv->params->reverse_mac_address)
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+ imx_ocotp_nvmem_config.layout = &imx_ocotp_layout;
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+
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priv->config = &imx_ocotp_nvmem_config;
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clk_prepare_enable(priv->clk);
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