From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org, Peng Fan <peng.fan@nxp.com>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH 03/10] nvmem: imx: scu: support hole region check
Date: Tue, 29 Oct 2019 11:42:33 +0000 [thread overview]
Message-ID: <20191029114240.14905-4-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20191029114240.14905-1-srinivas.kandagatla@linaro.org>
From: Peng Fan <peng.fan@nxp.com>
Introduce HOLE/ECC_REGION flag and in_hole helper to ease the check
of hole region. The ECC_REGION is also introduced here which is
preparing for programming support. ECC_REGION could only be programmed
once, so need take care.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
drivers/nvmem/imx-ocotp-scu.c | 47 +++++++++++++++++++++++++++++++----
1 file changed, 42 insertions(+), 5 deletions(-)
diff --git a/drivers/nvmem/imx-ocotp-scu.c b/drivers/nvmem/imx-ocotp-scu.c
index 61a17f943f47..030e27ba4dfb 100644
--- a/drivers/nvmem/imx-ocotp-scu.c
+++ b/drivers/nvmem/imx-ocotp-scu.c
@@ -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)
{
@@ -91,11 +130,9 @@ 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)) {
- *buf++ = 0;
- continue;
- }
+ if (in_hole(context, i)) {
+ *buf++ = 0;
+ continue;
}
ret = imx_sc_misc_otp_fuse_read(priv->nvmem_ipc, i, buf);
--
2.21.0
next prev parent reply other threads:[~2019-10-29 11:43 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-29 11:42 [PATCH 00/10] nvmem: patches(set 1) for 5.5 Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 01/10] nvmem: core: fix nvmem_cell_write inline function Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 02/10] nvmem: sc27xx: Change to use devm_hwspin_lock_request_specific() to request one hwlock Srinivas Kandagatla
2019-10-29 11:42 ` Srinivas Kandagatla [this message]
2019-10-29 11:42 ` [PATCH 04/10] nvmem: imx: scu: support write Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 05/10] nvmem: imx-ocotp: reset error status on probe Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 06/10] dt-bindings: nvmem: Add Spreadtrum eFuse controller documentation Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 07/10] nvmem: sprd: Add Spreadtrum SoCs eFuse support Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 08/10] nvmem: imx: scu: fix dependency in Kconfig Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 09/10] dt-bindings: nvmem: add binding for Rockchip OTP controller Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 10/10] nvmem: add Rockchip OTP driver Srinivas Kandagatla
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