From: Sylwester Nawrocki <s.nawrocki@samsung.com>
To: krzk@kernel.org
Cc: robh+dt@kernel.org, vireshk@kernel.org,
devicetree@vger.kernel.org, kgene@kernel.org,
pankaj.dubey@samsung.com, linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
b.zolnierkie@samsung.com, m.szyprowski@samsung.com,
Sylwester Nawrocki <s.nawrocki@samsung.com>
Subject: [PATCH v2 2/9] soc: samsung: Convert exynos-chipid driver to use the regmap API
Date: Thu, 18 Jul 2019 16:30:37 +0200 [thread overview]
Message-ID: <20190718143044.25066-3-s.nawrocki@samsung.com> (raw)
In-Reply-To: <20190718143044.25066-1-s.nawrocki@samsung.com>
Convert the driver to use regmap API in order to allow other
drivers, like ASV, to access the CHIPID registers.
This patch adds definition of selected CHIPID register offsets
and register bit fields for Exynos5422 SoC.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
---
Changes since v1 (RFC):
- new patch
---
drivers/soc/samsung/exynos-chipid.c | 33 ++++++----------
include/linux/soc/samsung/exynos-chipid.h | 48 +++++++++++++++++++++++
2 files changed, 61 insertions(+), 20 deletions(-)
create mode 100644 include/linux/soc/samsung/exynos-chipid.h
diff --git a/drivers/soc/samsung/exynos-chipid.c b/drivers/soc/samsung/exynos-chipid.c
index 78b123ee60c0..594b00488013 100644
--- a/drivers/soc/samsung/exynos-chipid.c
+++ b/drivers/soc/samsung/exynos-chipid.c
@@ -9,18 +9,16 @@
*/
#include <linux/io.h>
+#include <linux/mfd/syscon.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
+#include <linux/soc/samsung/exynos-chipid.h>
#include <linux/sys_soc.h>
-#define EXYNOS_SUBREV_MASK (0xF << 4)
-#define EXYNOS_MAINREV_MASK (0xF << 0)
-#define EXYNOS_REV_MASK (EXYNOS_SUBREV_MASK | EXYNOS_MAINREV_MASK)
-#define EXYNOS_MASK 0xFFFFF000
-
static const struct exynos_soc_id {
const char *name;
unsigned int id;
@@ -53,29 +51,24 @@ static const char * __init product_id_to_soc_id(unsigned int product_id)
int __init exynos_chipid_early_init(void)
{
struct soc_device_attribute *soc_dev_attr;
- void __iomem *exynos_chipid_base;
struct soc_device *soc_dev;
struct device_node *root;
- struct device_node *np;
+ struct regmap *regmap;
u32 product_id;
u32 revision;
+ int ret;
- /* look up for chipid node */
- np = of_find_compatible_node(NULL, NULL, "samsung,exynos4210-chipid");
- if (!np)
- return -ENODEV;
-
- exynos_chipid_base = of_iomap(np, 0);
- of_node_put(np);
-
- if (!exynos_chipid_base) {
- pr_err("Failed to map SoC chipid\n");
- return -ENXIO;
+ regmap = syscon_regmap_lookup_by_compatible("samsung,exynos4210-chipid");
+ if (IS_ERR(regmap)) {
+ pr_err("%s: failed to get regmap\n", __func__);
+ return PTR_ERR(regmap);
}
- product_id = readl_relaxed(exynos_chipid_base);
+ ret = regmap_read(regmap, EXYNOS_CHIPID_REG_PRO_ID, &product_id);
+ if (ret < 0)
+ return ret;
+
revision = product_id & EXYNOS_REV_MASK;
- iounmap(exynos_chipid_base);
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
diff --git a/include/linux/soc/samsung/exynos-chipid.h b/include/linux/soc/samsung/exynos-chipid.h
new file mode 100644
index 000000000000..25359d70d617
--- /dev/null
+++ b/include/linux/soc/samsung/exynos-chipid.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * Exynos - CHIPID support
+ */
+
+#define EXYNOS_CHIPID_REG_PRO_ID 0x00
+ #define EXYNOS_SUBREV_MASK (0xf << 4)
+ #define EXYNOS_MAINREV_MASK (0xf << 0)
+ #define EXYNOS_REV_MASK (EXYNOS_SUBREV_MASK | \
+ EXYNOS_MAINREV_MASK)
+ #define EXYNOS_MASK 0xfffff000
+
+#define EXYNOS_CHIPID_REG_PKG_ID 0x04
+/* Bit field definitions for EXYNOS_CHIPID_REG_PKG_ID register */
+ #define EXYNOS5422_IDS_OFFSET 24
+ #define EXYNOS5422_IDS_MASK 0xff
+ #define EXYNOS5422_USESG_OFFSET 3
+ #define EXYNOS5422_USESG_MASK 0x01
+ #define EXYNOS5422_SG_OFFSET 0
+ #define EXYNOS5422_SG_MASK 0x07
+ #define EXYNOS5422_TABLE_OFFSET 8
+ #define EXYNOS5422_TABLE_MASK 0x03
+ #define EXYNOS5422_SG_A_OFFSET 17
+ #define EXYNOS5422_SG_A_MASK 0x0f
+ #define EXYNOS5422_SG_B_OFFSET 21
+ #define EXYNOS5422_SG_B_MASK 0x03
+ #define EXYNOS5422_SG_BSIGN_OFFSET 23
+ #define EXYNOS5422_SG_BSIGN_MASK 0x01
+ #define EXYNOS5422_BIN2_OFFSET 12
+ #define EXYNOS5422_BIN2_MASK 0x01
+
+#define EXYNOS_CHIPID_REG_LOT_ID 0x14
+
+#define EXYNOS_CHIPID_REG_AUX_INFO 0x1c
+/* Bit field definitions for EXYNOS_CHIPID_REG_AUX_INFO register */
+ #define EXYNOS5422_TMCB_OFFSET 0
+ #define EXYNOS5422_TMCB_MASK 0x7f
+ #define EXYNOS5422_ARM_UP_OFFSET 8
+ #define EXYNOS5422_ARM_UP_MASK 0x03
+ #define EXYNOS5422_ARM_DN_OFFSET 10
+ #define EXYNOS5422_ARM_DN_MASK 0x03
+ #define EXYNOS5422_KFC_UP_OFFSET 12
+ #define EXYNOS5422_KFC_UP_MASK 0x03
+ #define EXYNOS5422_KFC_DN_OFFSET 14
+ #define EXYNOS5422_KFC_DN_MASK 0x03
--
2.17.1
next prev parent reply other threads:[~2019-07-18 14:31 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190718143117eucas1p1e534b9075d10fbbbe427c66192205eb1@eucas1p1.samsung.com>
2019-07-18 14:30 ` [PATCH v2 0/9] Exynos Adaptive Supply Voltage support Sylwester Nawrocki
[not found] ` <CGME20190718143127eucas1p13b1e2c98d270140a87f09562ef46c9a3@eucas1p1.samsung.com>
2019-07-18 14:30 ` [PATCH v2 1/9] soc: samsung: Add exynos chipid driver support Sylwester Nawrocki
2019-07-23 12:57 ` Krzysztof Kozlowski
2019-07-23 14:10 ` Bartlomiej Zolnierkiewicz
2019-07-24 10:47 ` Krzysztof Kozlowski
2019-08-08 12:07 ` Sylwester Nawrocki
[not found] ` <CGME20190718143128eucas1p2677ae16d229dddcd9a0db8084f0da5cf@eucas1p2.samsung.com>
2019-07-18 14:30 ` Sylwester Nawrocki [this message]
2019-07-23 13:01 ` [PATCH v2 2/9] soc: samsung: Convert exynos-chipid driver to use the regmap API Krzysztof Kozlowski
2019-08-08 12:07 ` Sylwester Nawrocki
[not found] ` <CGME20190718143130eucas1p26f2058f47eb2f4020e1ddbf1619d1ac8@eucas1p2.samsung.com>
2019-07-18 14:30 ` [PATCH v2 3/9] soc: samsung: Add Exynos Adaptive Supply Voltage driver Sylwester Nawrocki
2019-07-23 13:38 ` Krzysztof Kozlowski
2019-08-08 12:07 ` Sylwester Nawrocki
2019-08-08 12:31 ` Krzysztof Kozlowski
2019-08-08 12:48 ` Robin Murphy
2019-08-08 13:14 ` Krzysztof Kozlowski
[not found] ` <CGME20190718143131eucas1p2e1afc9fe816fff52ee4d12e0979eeb4c@eucas1p2.samsung.com>
2019-07-18 14:30 ` [PATCH v2 4/9] ARM: EXYNOS: enable exynos_chipid for ARCH_EXYNOS Sylwester Nawrocki
[not found] ` <CGME20190718143132eucas1p2afecae86f2ef17aa8a4a99df8ffa47d9@eucas1p2.samsung.com>
2019-07-18 14:30 ` [PATCH v2 5/9] ARM64: " Sylwester Nawrocki
[not found] ` <CGME20190718143134eucas1p2aed09e2171d0d2d6b916dddac3637017@eucas1p2.samsung.com>
2019-07-18 14:30 ` [PATCH v2 6/9] ARM: EXYNOS: Enable exynos-asv driver " Sylwester Nawrocki
[not found] ` <CGME20190718143135eucas1p2da5b7842b35327c60667064184619a9f@eucas1p2.samsung.com>
2019-07-18 14:30 ` [PATCH v2 7/9] soc: samsung: Update the CHIP ID DT binding documentation Sylwester Nawrocki
[not found] ` <CGME20190718143136eucas1p2cedfe5ed5e8e6316e82b30a565dc4855@eucas1p2.samsung.com>
2019-07-18 14:30 ` [PATCH v2 8/9] ARM: dts: Add "syscon" compatible string to chipid node Sylwester Nawrocki
[not found] ` <CGME20190718143138eucas1p127542c4cb8416cee9af6a95f4bc98366@eucas1p1.samsung.com>
2019-07-18 14:30 ` [PATCH v2 9/9] ARM: dts: Add samsung,asv-bin property for odroidxu3-lite Sylwester Nawrocki
2019-07-23 2:04 ` [PATCH v2 0/9] Exynos Adaptive Supply Voltage support Viresh Kumar
2019-07-24 13:10 ` Marek Szyprowski
2019-07-25 2:23 ` Viresh Kumar
2019-08-09 15:58 ` Sylwester Nawrocki
2019-08-19 9:09 ` Viresh Kumar
2019-08-19 10:06 ` Viresh Kumar
2019-08-19 11:16 ` Sylwester Nawrocki
2019-08-19 11:25 ` Viresh Kumar
2019-08-19 13:39 ` Sylwester Nawrocki
2019-08-20 3:01 ` Viresh Kumar
2019-08-20 9:03 ` Sylwester Nawrocki
2019-08-20 9:21 ` Viresh Kumar
2019-09-04 12:37 ` Sylwester Nawrocki
2019-09-05 5:01 ` Viresh Kumar
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