nvmem: imx: scu: support hole region check (f8017bfc) · Commits · 戴 / test

drivers/nvmem/imx-ocotp-scu.c

+42 −5

Original line number	Diff line number	Diff line
		@@ -19,9 +19,20 @@ enum ocotp_devtype {
		IMX8QM,
		};

		#define ECC_REGION BIT(0)
		#define HOLE_REGION BIT(1)

		struct ocotp_region {
		u32 start;
		u32 end;
		u32 flag;
		};

		struct ocotp_devtype_data {
		int devtype;
		int nregs;
		u32 num_region;
		struct ocotp_region region[];
		};

		struct ocotp_priv {
		@@ -38,13 +49,41 @@ struct imx_sc_msg_misc_fuse_read {
		static struct ocotp_devtype_data imx8qxp_data = {
		.devtype = IMX8QXP,
		.nregs = 800,
		.num_region = 3,
		.region = {
		{0x10, 0x10f, ECC_REGION},
		{0x110, 0x21F, HOLE_REGION},
		{0x220, 0x31F, ECC_REGION},
		},
		};

		static struct ocotp_devtype_data imx8qm_data = {
		.devtype = IMX8QM,
		.nregs = 800,
		.num_region = 2,
		.region = {
		{0x10, 0x10f, ECC_REGION},
		{0x1a0, 0x1ff, ECC_REGION},
		},
		};

		static bool in_hole(void *context, u32 index)
		{
		struct ocotp_priv *priv = context;
		const struct ocotp_devtype_data *data = priv->data;
		int i;

		for (i = 0; i < data->num_region; i++) {
		if (data->region[i].flag & HOLE_REGION) {
		if ((index >= data->region[i].start) &&
		(index <= data->region[i].end))
		return true;
		}
		}

		return false;
		}

		static int imx_sc_misc_otp_fuse_read(struct imx_sc_ipc *ipc, u32 word,
		u32 *val)
		{
		@@ -91,12 +130,10 @@ static int imx_scu_ocotp_read(void *context, unsigned int offset,
		buf = p;

		for (i = index; i < (index + count); i++) {
		if (priv->data->devtype == IMX8QXP) {
		if ((i > 271) && (i < 544)) {
		if (in_hole(context, i)) {
		*buf++ = 0;
		continue;
		}
		}

		ret = imx_sc_misc_otp_fuse_read(priv->nvmem_ipc, i, buf);
		if (ret) {