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nvmem: imx-ocotp: Pass parameters via a struct

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It will be useful in later patches to know the register access mode and
bit-shift to apply to a given input offset.

Fixes: 0642bac7da ("nvmem: imx-ocotp: add write support")

Signed-off-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bryan O'Donoghue 2017-10-24 10:54:28 +01:00 committed by Greg Kroah-Hartman
parent 9d6a8dab8d
commit e20d2b291b
1 changed files with 34 additions and 10 deletions
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44
drivers/nvmem/imx-ocotp.c
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@ -53,11 +53,15 @@
static DEFINE_MUTEX(ocotp_mutex);
struct ocotp_params {
unsigned int nregs;
};
struct ocotp_priv {
struct device *dev;
struct clk *clk;
void __iomem *base;
unsigned int nregs;
const struct ocotp_params *params;
struct nvmem_config *config;
};
@ -121,8 +125,8 @@ static int imx_ocotp_read(void *context, unsigned int offset,
index = offset >> 2;
count = bytes >> 2;
if (count > (priv->nregs - index))
count = priv->nregs - index;
if (count > (priv->params->nregs - index))
count = priv->params->nregs - index;
mutex_lock(&ocotp_mutex);
@ -307,12 +311,32 @@ static struct nvmem_config imx_ocotp_nvmem_config = {
.reg_write = imx_ocotp_write,
};
static const struct ocotp_params imx6q_params = {
.nregs = 128,
};
static const struct ocotp_params imx6sl_params = {
.nregs = 64,
};
static const struct ocotp_params imx6sx_params = {
.nregs = 128,
};
static const struct ocotp_params imx6ul_params = {
.nregs = 128,
};
static const struct ocotp_params imx7d_params = {
.nregs = 64,
};
static const struct of_device_id imx_ocotp_dt_ids[] = {
{ .compatible = "fsl,imx6q-ocotp", (void *)128 },
{ .compatible = "fsl,imx6sl-ocotp", (void *)64 },
{ .compatible = "fsl,imx6sx-ocotp", (void *)128 },
{ .compatible = "fsl,imx6ul-ocotp", (void *)128 },
{ .compatible = "fsl,imx7d-ocotp", (void *)64 },
{ .compatible = "fsl,imx6q-ocotp", .data = &imx6q_params },
{ .compatible = "fsl,imx6sl-ocotp", .data = &imx6sl_params },
{ .compatible = "fsl,imx6sx-ocotp", .data = &imx6sx_params },
{ .compatible = "fsl,imx6ul-ocotp", .data = &imx6ul_params },
{ .compatible = "fsl,imx7d-ocotp", .data = &imx7d_params },
{ },
};
MODULE_DEVICE_TABLE(of, imx_ocotp_dt_ids);
@ -341,8 +365,8 @@ static int imx_ocotp_probe(struct platform_device *pdev)
return PTR_ERR(priv->clk);
of_id = of_match_device(imx_ocotp_dt_ids, dev);
priv->nregs = (unsigned long)of_id->data;
imx_ocotp_nvmem_config.size = 4 * priv->nregs;
priv->params = of_device_get_match_data(&pdev->dev);
imx_ocotp_nvmem_config.size = 4 * priv->params->nregs;
imx_ocotp_nvmem_config.dev = dev;
imx_ocotp_nvmem_config.priv = priv;
priv->config = &imx_ocotp_nvmem_config;