+++ /dev/null
-From 5a37811de679bff03e9c5a746f75574910ede964 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
-Date: Wed, 22 Mar 2023 20:52:13 +0100
-Subject: [PATCH] Revert "mtd: rawnand: Macronix: Add support for block
- protection"
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-This reverts commit 03a539c7a118427a6609a26461358c56ac8f3a06.
-
-Macronix block protection doesn't seem to be supported on Sercomm H-500s
-devices since it hangs the device.
-
-Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
----
- drivers/mtd/nand/raw/nand_macronix.c | 72 ----------------------------
- 1 file changed, 72 deletions(-)
-
---- a/drivers/mtd/nand/raw/nand_macronix.c
-+++ b/drivers/mtd/nand/raw/nand_macronix.c
-@@ -13,10 +13,6 @@
- #define MACRONIX_READ_RETRY_BIT BIT(0)
- #define MACRONIX_NUM_READ_RETRY_MODES 6
-
--#define ONFI_FEATURE_ADDR_MXIC_PROTECTION 0xA0
--#define MXIC_BLOCK_PROTECTION_ALL_LOCK 0x38
--#define MXIC_BLOCK_PROTECTION_ALL_UNLOCK 0x0
--
- #define ONFI_FEATURE_ADDR_MXIC_RANDOMIZER 0xB0
- #define MACRONIX_RANDOMIZER_BIT BIT(1)
- #define MACRONIX_RANDOMIZER_ENPGM BIT(0)
-@@ -189,73 +185,6 @@ static void macronix_nand_fix_broken_get
- ONFI_FEATURE_ADDR_TIMING_MODE, 1);
- }
-
--/*
-- * Macronix NAND supports Block Protection by Protectoin(PT) pin;
-- * active high at power-on which protects the entire chip even the #WP is
-- * disabled. Lock/unlock protection area can be partition according to
-- * protection bits, i.e. upper 1/2 locked, upper 1/4 locked and so on.
-- */
--static int mxic_nand_lock(struct nand_chip *chip, loff_t ofs, uint64_t len)
--{
-- u8 feature[ONFI_SUBFEATURE_PARAM_LEN];
-- int ret;
--
-- feature[0] = MXIC_BLOCK_PROTECTION_ALL_LOCK;
-- nand_select_target(chip, 0);
-- ret = nand_set_features(chip, ONFI_FEATURE_ADDR_MXIC_PROTECTION,
-- feature);
-- nand_deselect_target(chip);
-- if (ret)
-- pr_err("%s all blocks failed\n", __func__);
--
-- return ret;
--}
--
--static int mxic_nand_unlock(struct nand_chip *chip, loff_t ofs, uint64_t len)
--{
-- u8 feature[ONFI_SUBFEATURE_PARAM_LEN];
-- int ret;
--
-- feature[0] = MXIC_BLOCK_PROTECTION_ALL_UNLOCK;
-- nand_select_target(chip, 0);
-- ret = nand_set_features(chip, ONFI_FEATURE_ADDR_MXIC_PROTECTION,
-- feature);
-- nand_deselect_target(chip);
-- if (ret)
-- pr_err("%s all blocks failed\n", __func__);
--
-- return ret;
--}
--
--static void macronix_nand_block_protection_support(struct nand_chip *chip)
--{
-- u8 feature[ONFI_SUBFEATURE_PARAM_LEN];
-- int ret;
--
-- bitmap_set(chip->parameters.get_feature_list,
-- ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1);
--
-- feature[0] = MXIC_BLOCK_PROTECTION_ALL_UNLOCK;
-- nand_select_target(chip, 0);
-- ret = nand_get_features(chip, ONFI_FEATURE_ADDR_MXIC_PROTECTION,
-- feature);
-- nand_deselect_target(chip);
-- if (ret || feature[0] != MXIC_BLOCK_PROTECTION_ALL_LOCK) {
-- if (ret)
-- pr_err("Block protection check failed\n");
--
-- bitmap_clear(chip->parameters.get_feature_list,
-- ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1);
-- return;
-- }
--
-- bitmap_set(chip->parameters.set_feature_list,
-- ONFI_FEATURE_ADDR_MXIC_PROTECTION, 1);
--
-- chip->ops.lock_area = mxic_nand_lock;
-- chip->ops.unlock_area = mxic_nand_unlock;
--}
--
- static int nand_power_down_op(struct nand_chip *chip)
- {
- int ret;
-@@ -488,7 +417,6 @@ static int macronix_nand_init(struct nan
-
- macronix_nand_fix_broken_get_timings(chip);
- macronix_nand_onfi_init(chip);
-- macronix_nand_block_protection_support(chip);
- macronix_nand_deep_power_down_support(chip);
- macronix_nand_setup_otp(chip);
-