[PATCH 1/5] drivers: soc: remove KVX support

[clement.leger@linux.dev]

From: Clément Léger <clement.leger@linux.dev>

Remove the kvx SoC info driver.

Signed-off-by: Clément Léger <clement.leger@linux.dev>
---
 Documentation/gen_magicvars.py |  19 ----
 drivers/soc/Kconfig            |   1 -
 drivers/soc/Makefile           |   1 -
 drivers/soc/kvx/Kconfig        |  10 --
 drivers/soc/kvx/Makefile       |   1 -
 drivers/soc/kvx/kvx_socinfo.c  | 178 ---------------------------------
 6 files changed, 210 deletions(-)
 delete mode 100644 drivers/soc/kvx/Kconfig
 delete mode 100644 drivers/soc/kvx/Makefile
 delete mode 100644 drivers/soc/kvx/kvx_socinfo.c

diff --git a/Documentation/gen_magicvars.py b/Documentation/gen_magicvars.py
index e2bb020360..142e770c10 100755
--- a/Documentation/gen_magicvars.py
+++ b/Documentation/gen_magicvars.py
@@ -13,12 +13,6 @@ MAGICVAR_CONT = re.compile(r'(.*?)"\s*\)')
 
 UNESCAPE = re.compile(r'''\\(["\\])''')
 
-# Global override dictionary to map directories to specific arch or board
-DIRECTORY_OVERRIDES = {
-    'drivers/soc/kvx': {'arch': 'kvx'},
-}
-
-
 def string_unescape(s):
     return re.sub(UNESCAPE, r'\1', s.replace(r'\t', '').replace(r'\n', ''))
 
@@ -81,19 +75,6 @@ def categorize_file(filepath):
     arch = None
     board = None
     
-    # Check for directory overrides first
-    for override_path, override_spec in DIRECTORY_OVERRIDES.items():
-        override_parts = override_path.split('/')
-        # Check if the filepath starts with the override path
-        if len(parts) >= len(override_parts):
-            if all(parts[i] == override_parts[i] for i in range(len(override_parts))):
-                # This file matches the override path
-                if 'arch' in override_spec:
-                    arch = override_spec['arch']
-                if 'board' in override_spec:
-                    board = override_spec['board']
-                return arch, board
-
     # Check for arch
     if 'arch' in parts:
         arch_idx = parts.index('arch')
diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig
index cbde3c35a4..1fc0efbb3b 100644
--- a/drivers/soc/Kconfig
+++ b/drivers/soc/Kconfig
@@ -1,7 +1,6 @@
 menu "SoC drivers"
 
 source "drivers/soc/imx/Kconfig"
-source "drivers/soc/kvx/Kconfig"
 source "drivers/soc/rockchip/Kconfig"
 source "drivers/soc/ti/Kconfig"
 
diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
index 975304cd50..abe9c38d03 100644
--- a/drivers/soc/Makefile
+++ b/drivers/soc/Makefile
@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
 obj-$(CONFIG_ARCH_IMX)		+= imx/
-obj-$(CONFIG_KVX)		+= kvx/
 obj-$(CONFIG_ARCH_ROCKCHIP)	+= rockchip/
 obj-$(CONFIG_CPU_SIFIVE)	+= sifive/
 obj-$(CONFIG_SOC_STARFIVE)	+= starfive/
diff --git a/drivers/soc/kvx/Kconfig b/drivers/soc/kvx/Kconfig
deleted file mode 100644
index 18dcb8ba14..0000000000
--- a/drivers/soc/kvx/Kconfig
+++ /dev/null
@@ -1,10 +0,0 @@
-menu "KVX SoC drivers"
-
-config KVX_SOCINFO
-        bool "KVX SoC Info driver"
-	depends on KVX
-	select NVMEM
-	select KVX_OTP_NV
-	default y
-
-endmenu
diff --git a/drivers/soc/kvx/Makefile b/drivers/soc/kvx/Makefile
deleted file mode 100644
index cacfef21a1..0000000000
--- a/drivers/soc/kvx/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_KVX_SOCINFO) += kvx_socinfo.o
diff --git a/drivers/soc/kvx/kvx_socinfo.c b/drivers/soc/kvx/kvx_socinfo.c
deleted file mode 100644
index 9b85af6464..0000000000
--- a/drivers/soc/kvx/kvx_socinfo.c
+++ /dev/null
@@ -1,178 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2020 Kalray Inc., Clément Léger
- */
-
-#define pr_fmt(fmt) "kvx_socinfo: " fmt
-
-#include <init.h>
-#include <driver.h>
-#include <globalvar.h>
-#include <magicvar.h>
-#include <command.h>
-#include <libfile.h>
-#include <getopt.h>
-#include <common.h>
-#include <fs.h>
-
-#include <asm/sfr.h>
-
-#include <linux/kernel.h>
-#include <linux/nvmem-consumer.h>
-
-#define LOT_ID_STR_LEN	8
-
-#define EWS_LOT_ID_MASK		0x3ffffffffffULL
-#define EWS_WAFER_ID_SHIFT	42
-#define EWS_WAFER_ID_MASK	0x1fULL
-
-#define FT_COM_AP_SHIFT		16
-#define FT_COM_AP_MASK		0x3f
-#define FT_DEVICE_ID_SHIFT	22
-#define FT_DEVICE_ID_MASK	0x1ff
-
-static char *kvx_mppa_id;
-static char *kvx_arch_rev;
-static char *kvx_board_sn;
-
-BAREBOX_MAGICVAR(global.kvx.arch_rev, "KVX architecture revision");
-BAREBOX_MAGICVAR(global.kvx.mppa_id, "KVX MPPA chip id");
-BAREBOX_MAGICVAR(global.kvx.board_sn, "KVX board sn");
-
-static void kvx_soc_info_read_revision(void)
-{
-	u64 pcr = kvx_sfr_get(PCR);
-	u8 sv = kvx_sfr_field_val(pcr, PCR, SV);
-	u8 car = kvx_sfr_field_val(pcr, PCR, CAR);
-	const char *car_str = "", *ver_str = "";
-
-	switch (sv) {
-	case 0:
-	case 1:
-		car_str = "kv3";
-		break;
-	}
-
-	switch (car) {
-	case 0:
-		ver_str = "1";
-		break;
-	case 1:
-		ver_str = "2";
-		break;
-	}
-
-	kvx_arch_rev = basprintf("%s-%s", car_str, ver_str);
-
-	globalvar_add_simple_string("kvx.arch_rev", &kvx_arch_rev);
-}
-
-static int base38_decode(char *s, u64 val, int nb_char)
-{
-	int i;
-	const char alphabet[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_";
-	const int base = sizeof(alphabet);
-
-	if (s == NULL)
-		return -1;
-
-	for (i = 0; i < nb_char; i++) {
-		s[i] = alphabet[val % base];
-		val /= base;
-	}
-
-	return 0;
-}
-
-static int kvx_read_mppa_id(struct device_node *socinfo)
-{
-	char lot_id[LOT_ID_STR_LEN + 1] = "";
-	char com_ap;
-	u64 *cell_val64;
-	u64 ews_val;
-	u32 *cell_val32;
-	u32 ft_val;
-	u8 wafer_id;
-	u16 device_id;
-
-	cell_val64 = (u64 *) nvmem_cell_get_and_read(socinfo, "ews_fuse", 8);
-	if (IS_ERR(cell_val64)) {
-		pr_debug("Fail to read ews_fuse\n");
-		return PTR_ERR(cell_val64);
-	}
-
-	ews_val = *cell_val64;
-#ifdef CONFIG_ARCH_COOLIDGE_V1
-	/* On kv3-1, 32b regs on traceability are written in reverse order */
-	ews_val = (ews_val >> 32) | (ews_val << 32);
-#endif
-	wafer_id = (ews_val >> EWS_WAFER_ID_SHIFT) & EWS_WAFER_ID_MASK;
-	base38_decode(lot_id, ews_val & EWS_LOT_ID_MASK, LOT_ID_STR_LEN);
-	free(cell_val64);
-
-	cell_val32 = (u32 *) nvmem_cell_get_and_read(socinfo, "ft_fuse", 4);
-	if (IS_ERR(cell_val32)) {
-		pr_debug("Fail to read ft_fuse\n");
-		return PTR_ERR(cell_val32);
-	}
-
-	ft_val = *cell_val32;
-	device_id = (ft_val >> FT_DEVICE_ID_SHIFT) & FT_DEVICE_ID_MASK;
-	base38_decode(&com_ap, (ft_val >> FT_COM_AP_SHIFT) & FT_COM_AP_MASK, 1);
-	free(cell_val32);
-
-	kvx_mppa_id = basprintf("%sA-%dE-%03d", lot_id, wafer_id, device_id);
-
-	globalvar_add_simple_string("kvx.mppa_id", &kvx_mppa_id);
-
-	return 0;
-}
-
-static int kvx_read_board_sn(struct device_node *socinfo)
-{
-	struct nvmem_cell *cell;
-	size_t len;
-	char *sn;
-
-	cell = of_nvmem_cell_get(socinfo, "board_sn");
-	if (IS_ERR(cell)) {
-		pr_debug("Fail to get board_sn cell\n");
-		return PTR_ERR(cell);
-	}
-
-	sn = nvmem_cell_read(cell, &len);
-	nvmem_cell_put(cell);
-	if (IS_ERR(sn)) {
-		pr_debug("Fail to read board_sn\n");
-		return PTR_ERR(sn);
-	}
-
-	kvx_board_sn = xzalloc(len + 1);
-	memcpy(kvx_board_sn, sn, len);
-	globalvar_add_simple_string("kvx.board_sn", &kvx_board_sn);
-	free(sn);
-
-	return 0;
-}
-
-static int kvx_socinfo_probe(struct device *dev)
-{
-	kvx_soc_info_read_revision();
-
-	kvx_read_board_sn(dev->device_node);
-
-	return kvx_read_mppa_id(dev->device_node);
-}
-
-static const struct of_device_id kvx_socinfo_dt_ids[] = {
-	{ .compatible = "kalray,kvx-socinfo" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, kvx_socinfo_dt_ids);
-
-static struct driver kvx_socinfo_driver = {
-	.name = "kvx-socinfo",
-	.probe = kvx_socinfo_probe,
-	.of_compatible = DRV_OF_COMPAT(kvx_socinfo_dt_ids),
-};
-coredevice_platform_driver(kvx_socinfo_driver);
-- 
2.55.0