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main/linux-postmarketos-allwinner: add kb151 support (MR 2422)

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Support for the PINE64 PinePhone keyboard attachment based on the kb151
chip.
This commit is contained in:
Martijn Braam 2021-08-10 02:52:54 +02:00 committed by Luca Weiss
parent fafc96da60
commit 8158559a04
No known key found for this signature in database
GPG key ID: 72D843B89D4DD756
3 changed files with 383 additions and 3 deletions
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377
main/linux-postmarketos-allwinner/0015-add-kb151-support.patch Normal file
View file

@ -0,0 +1,377 @@
From d1d849cae12db71aa81ceedaedc1b17a34790367 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Sat, 19 Jun 2021 18:36:05 -0500
Subject: [PATCH] Input: kb151 - Add a driver for the KB151 keyboard
This keyboard is found in the official Pine64 PinePhone keyboard case.
It is connected over I2C and runs a libre firmware.
Signed-off-by: Samuel Holland <samuel@sholland.org>
---
.../dts/allwinner/sun50i-a64-pinephone.dtsi | 64 +++++
drivers/input/keyboard/Kconfig | 10 +
drivers/input/keyboard/Makefile | 1 +
drivers/input/keyboard/kb151.c | 246 ++++++++++++++++++
4 files changed, 321 insertions(+)
create mode 100644 drivers/input/keyboard/kb151.c
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
index 4ede9fe66020c9..0bdc6eceec6099 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
@@ -551,6 +551,70 @@
/* Connected to pogo pins (external spring based pinheader for user addons) */
&i2c2 {
status = "okay";
+
+ keyboard@15 {
+ compatible = "pine64,kb151";
+ reg = <0x15>;
+ interrupt-parent = <&r_pio>;
+ interrupts = <0 12 IRQ_TYPE_EDGE_FALLING>; /* PL12 */
+ keypad,num-rows = <6>;
+ keypad,num-columns = <12>;
+ linux,keymap = <MATRIX_KEY(0, 0, KEY_ESC)
+ MATRIX_KEY(0, 1, KEY_1)
+ MATRIX_KEY(0, 2, KEY_2)
+ MATRIX_KEY(0, 3, KEY_3)
+ MATRIX_KEY(0, 4, KEY_4)
+ MATRIX_KEY(0, 5, KEY_5)
+ MATRIX_KEY(0, 6, KEY_6)
+ MATRIX_KEY(0, 7, KEY_7)
+ MATRIX_KEY(0, 8, KEY_8)
+ MATRIX_KEY(0, 9, KEY_9)
+ MATRIX_KEY(0, 10, KEY_0)
+ MATRIX_KEY(0, 11, KEY_BACKSPACE)
+ MATRIX_KEY(1, 0, KEY_TAB)
+ MATRIX_KEY(1, 1, KEY_Q)
+ MATRIX_KEY(1, 2, KEY_W)
+ MATRIX_KEY(1, 3, KEY_E)
+ MATRIX_KEY(1, 4, KEY_R)
+ MATRIX_KEY(1, 5, KEY_T)
+ MATRIX_KEY(1, 6, KEY_Y)
+ MATRIX_KEY(1, 7, KEY_U)
+ MATRIX_KEY(1, 8, KEY_I)
+ MATRIX_KEY(1, 9, KEY_O)
+ MATRIX_KEY(1, 10, KEY_P)
+ MATRIX_KEY(1, 11, KEY_ENTER)
+ MATRIX_KEY(2, 0, KEY_LEFTMETA)
+ MATRIX_KEY(2, 1, KEY_A)
+ MATRIX_KEY(2, 2, KEY_S)
+ MATRIX_KEY(2, 3, KEY_D)
+ MATRIX_KEY(2, 4, KEY_F)
+ MATRIX_KEY(2, 5, KEY_G)
+ MATRIX_KEY(2, 6, KEY_H)
+ MATRIX_KEY(2, 7, KEY_J)
+ MATRIX_KEY(2, 8, KEY_K)
+ MATRIX_KEY(2, 9, KEY_L)
+ MATRIX_KEY(2, 10, KEY_SEMICOLON)
+ MATRIX_KEY(3, 0, KEY_LEFTSHIFT)
+ MATRIX_KEY(3, 1, KEY_Z)
+ MATRIX_KEY(3, 2, KEY_X)
+ MATRIX_KEY(3, 3, KEY_C)
+ MATRIX_KEY(3, 4, KEY_V)
+ MATRIX_KEY(3, 5, KEY_B)
+ MATRIX_KEY(3, 6, KEY_N)
+ MATRIX_KEY(3, 7, KEY_M)
+ MATRIX_KEY(3, 8, KEY_COMMA)
+ MATRIX_KEY(3, 9, KEY_DOT)
+ MATRIX_KEY(3, 10, KEY_SLASH)
+ MATRIX_KEY(4, 1, KEY_LEFTCTRL)
+ MATRIX_KEY(4, 4, KEY_SPACE)
+ MATRIX_KEY(4, 6, KEY_APOSTROPHE)
+ MATRIX_KEY(4, 8, KEY_RIGHTBRACE)
+ MATRIX_KEY(4, 9, KEY_LEFTBRACE)
+ MATRIX_KEY(5, 2, KEY_FN)
+ MATRIX_KEY(5, 3, KEY_LEFTALT)
+ MATRIX_KEY(5, 5, KEY_RIGHTALT)>;
+ wakeup-source;
+ };
};
&i2s2 {
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 40a070a2e7f5b7..0259e9133f4692 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -353,6 +353,16 @@ config KEYBOARD_HP7XX
To compile this driver as a module, choose M here: the
module will be called jornada720_kbd.
+config KEYBOARD_KB151
+ tristate "Pine64 KB151 Keyboard"
+ depends on I2C
+ select CRC8
+ select INPUT_MATRIXKMAP
+ help
+ Say Y here to enable support for the KB151 keyboard used in the
+ Pine64 PinePhone keyboard case. This driver supports the FLOSS
+ firmware available at https://megous.com/git/pinephone-keyboard/
+
config KEYBOARD_LM8323
tristate "LM8323 keypad chip"
depends on I2C
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 1d689fdd5c00f9..87fda7b961913a 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_KEYBOARD_IMX) += imx_keypad.o
obj-$(CONFIG_KEYBOARD_IMX_SC_KEY) += imx_sc_key.o
obj-$(CONFIG_KEYBOARD_HP6XX) += jornada680_kbd.o
obj-$(CONFIG_KEYBOARD_HP7XX) += jornada720_kbd.o
+obj-$(CONFIG_KEYBOARD_KB151) += kb151.o
obj-$(CONFIG_KEYBOARD_LKKBD) += lkkbd.o
obj-$(CONFIG_KEYBOARD_LM8323) += lm8323.o
obj-$(CONFIG_KEYBOARD_LM8333) += lm8333.o
diff --git a/drivers/input/keyboard/kb151.c b/drivers/input/keyboard/kb151.c
new file mode 100644
index 00000000000000..595275d4f9d96f
--- /dev/null
+++ b/drivers/input/keyboard/kb151.c
@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (C) 2021 Samuel Holland <samuel@sholland.org>
+
+#include <linux/crc8.h>
+#include <linux/i2c.h>
+#include <linux/input/matrix_keypad.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/pm_wakeirq.h>
+
+#define KB151_CRC8_POLYNOMIAL 0x07
+
+#define KB151_DEVICE_ID_HI 0x00
+#define KB151_DEVICE_ID_HI_VALUE 0x4b
+#define KB151_DEVICE_ID_LO 0x01
+#define KB151_DEVICE_ID_LO_VALUE 0x42
+#define KB151_FW_REVISION 0x02
+#define KB151_FW_FEATURES 0x03
+#define KB151_MATRIX_SIZE 0x06
+#define KB151_SCAN_CRC 0x07
+#define KB151_SCAN_DATA 0x08
+#define KB151_SYS_CONFIG 0x20
+#define KB151_SYS_CONFIG_DISABLE_SCAN BIT(0)
+
+struct kb151 {
+ struct input_dev *input;
+ u8 crc_table[CRC8_TABLE_SIZE];
+ u8 row_shift;
+ u8 rows;
+ u8 cols;
+ u8 buf_swap;
+ u8 buf[];
+};
+
+static void kb151_update(struct i2c_client *client)
+{
+ struct kb151 *kb151 = i2c_get_clientdata(client);
+ unsigned short *keymap = kb151->input->keycode;
+ struct device *dev = &client->dev;
+ size_t buf_len = kb151->cols + 1;
+ u8 *old_buf = kb151->buf;
+ u8 *new_buf = kb151->buf;
+ int col, crc, ret, row;
+
+ if (kb151->buf_swap)
+ old_buf += buf_len;
+ else
+ new_buf += buf_len;
+
+ ret = i2c_smbus_read_i2c_block_data(client, KB151_SCAN_CRC,
+ buf_len, new_buf);
+ if (ret != buf_len) {
+ dev_err(dev, "Failed to read scan data: %d\n", ret);
+ return;
+ }
+
+ dev_info(dev, "%02x | %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
+ new_buf[0], new_buf[1], new_buf[2], new_buf[3], new_buf[4], new_buf[5],
+ new_buf[6], new_buf[7], new_buf[8], new_buf[9], new_buf[10], new_buf[11],
+ new_buf[12]);
+ crc = crc8(kb151->crc_table, new_buf + 1, kb151->cols, CRC8_INIT_VALUE);
+ if (crc != new_buf[0]) {
+ dev_err(dev, "Bad scan data (%02x != %02x)\n",
+ crc, new_buf[0]);
+ return;
+ }
+ dev_info(dev, "Good scan data (%02x == %02x)\n",
+ crc, new_buf[0]);
+
+ for (col = 0; col < kb151->cols; ++col) {
+ u8 old = *(++old_buf);
+ u8 new = *(++new_buf);
+ u8 changed = old ^ new;
+
+ for (row = 0; row < kb151->rows; ++row) {
+ int code = MATRIX_SCAN_CODE(row, col, kb151->row_shift);
+ u8 pressed = new & BIT(row);
+
+ if (!(changed & BIT(row)))
+ continue;
+
+ dev_dbg(&client->dev, "row %u col %u %sed\n",
+ row, col, pressed ? "press" : "releas");
+ input_report_key(kb151->input, keymap[code], pressed);
+ }
+ }
+ input_sync(kb151->input);
+
+ kb151->buf_swap = !kb151->buf_swap;
+}
+
+static int kb151_open(struct input_dev *input)
+{
+ struct i2c_client *client = input_get_drvdata(input);
+ struct device *dev = &client->dev;
+ int ret, val;
+
+ ret = i2c_smbus_read_byte_data(client, KB151_SYS_CONFIG);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read config: %d\n", ret);
+ return ret;
+ }
+
+ val = ret & ~KB151_SYS_CONFIG_DISABLE_SCAN;
+ ret = i2c_smbus_write_byte_data(client, KB151_SYS_CONFIG, val);
+ if (ret) {
+ dev_err(dev, "Failed to write config: %d\n", ret);
+ return ret;
+ }
+
+ kb151_update(client);
+
+ enable_irq(client->irq);
+
+ return 0;
+}
+
+static void kb151_close(struct input_dev *input)
+{
+ struct i2c_client *client = input_get_drvdata(input);
+ struct device *dev = &client->dev;
+ int ret, val;
+
+ disable_irq(client->irq);
+
+ ret = i2c_smbus_read_byte_data(client, KB151_SYS_CONFIG);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read config: %d\n", ret);
+ return;
+ }
+
+ val = ret | KB151_SYS_CONFIG_DISABLE_SCAN;
+ ret = i2c_smbus_write_byte_data(client, KB151_SYS_CONFIG, val);
+ if (ret) {
+ dev_err(dev, "Failed to write config: %d\n", ret);
+ }
+}
+
+static irqreturn_t kb151_irq_thread(int irq, void *data)
+{
+ struct i2c_client *client = data;
+
+ kb151_update(client);
+
+ return IRQ_HANDLED;
+}
+
+static int kb151_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ u8 info[KB151_MATRIX_SIZE + 1];
+ unsigned int kb_rows, kb_cols;
+ unsigned int rows, cols;
+ struct kb151 *kb151;
+ int ret;
+
+ ret = i2c_smbus_read_i2c_block_data(client, 0, sizeof(info), info);
+ if (ret != sizeof(info))
+ return ret;
+
+ if (info[KB151_DEVICE_ID_HI] != KB151_DEVICE_ID_HI_VALUE ||
+ info[KB151_DEVICE_ID_LO] != KB151_DEVICE_ID_LO_VALUE)
+ return -ENODEV;
+
+ dev_info(dev, "Found KB151 with firmware %d.%d (features=%#x)\n",
+ info[KB151_FW_REVISION] >> 4,
+ info[KB151_FW_REVISION] & 0xf,
+ info[KB151_FW_FEATURES]);
+
+ ret = matrix_keypad_parse_properties(dev, &rows, &cols);
+ if (ret)
+ return ret;
+
+ kb_rows = info[KB151_MATRIX_SIZE] & 0xf;
+ kb_cols = info[KB151_MATRIX_SIZE] >> 4;
+ if (rows > kb_rows || cols != kb_cols) {
+ dev_err(dev, "Keyboard matrix is %ux%u, but key map is %ux%u\n",
+ kb_rows, kb_cols, rows, cols);
+ return -EINVAL;
+ }
+
+ /* Allocate two buffers, and include space for the CRC. */
+ kb151 = devm_kzalloc(dev, struct_size(kb151, buf, 2 * (cols + 1)), GFP_KERNEL);
+ if (!kb151)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, kb151);
+
+ crc8_populate_msb(kb151->crc_table, KB151_CRC8_POLYNOMIAL);
+
+ kb151->row_shift = get_count_order(cols);
+ kb151->rows = rows;
+ kb151->cols = cols;
+
+ kb151->input = devm_input_allocate_device(dev);
+ if (!kb151->input)
+ return -ENOMEM;
+
+ input_set_drvdata(kb151->input, client);
+
+ kb151->input->name = client->name;
+ kb151->input->phys = "kb151/input0";
+ kb151->input->id.bustype = BUS_I2C;
+ kb151->input->open = kb151_open;
+ kb151->input->close = kb151_close;
+
+ __set_bit(EV_REP, kb151->input->evbit);
+
+ ret = matrix_keypad_build_keymap(NULL, NULL, rows, cols,
+ NULL, kb151->input);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to build keymap\n");
+
+ ret = devm_request_threaded_irq(dev, client->irq,
+ NULL, kb151_irq_thread,
+ IRQF_ONESHOT | IRQF_NO_AUTOEN,
+ client->name, client);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to request IRQ\n");
+
+ ret = input_register_device(kb151->input);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to register input\n");
+
+ return 0;
+}
+
+static const struct of_device_id kb151_of_match[] = {
+ { .compatible = "pine64,kb151" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, kb151_of_match);
+
+static struct i2c_driver kb151_driver = {
+ .probe_new = kb151_probe,
+ .driver = {
+ .name = "kb151",
+ .of_match_table = kb151_of_match,
+ },
+};
+module_i2c_driver(kb151_driver);
+
+MODULE_AUTHOR("Samuel Holland <samuel@sholland.org>");
+MODULE_DESCRIPTION("Pine64 KB151 keyboard driver");
+MODULE_LICENSE("GPL");

6
main/linux-postmarketos-allwinner/APKBUILD
View file

@ -7,7 +7,7 @@ _flavor=postmarketos-allwinner
_config="config-$_flavor.$CARCH" _config="config-$_flavor.$CARCH"
pkgname=linux-$_flavor pkgname=linux-$_flavor
pkgver=5.14.0_git2021830 pkgver=5.14.0_git2021830
pkgrel=0 pkgrel=1
_tag="orange-pi-5.14-20210830-0334" _tag="orange-pi-5.14-20210830-0334"
pkgdesc="Kernel fork with Pine64 patches (megi's tree, slightly patched)" pkgdesc="Kernel fork with Pine64 patches (megi's tree, slightly patched)"
arch="aarch64 armv7" arch="aarch64 armv7"
@ -50,6 +50,7 @@ source="$pkgname-$_tag.tar.gz::https://github.com/megous/linux/archive/$_tag.tar
0012-ARM-dts-sun6i-Add-Lark-FreeMe-70.2S-tablet.patch 0012-ARM-dts-sun6i-Add-Lark-FreeMe-70.2S-tablet.patch
0013-sunxi-mmc-h6-fix.patch 0013-sunxi-mmc-h6-fix.patch
0014-arm64-dts-allwinner-orangepi-3-fix-ethernet.patch 0014-arm64-dts-allwinner-orangepi-3-fix-ethernet.patch
0015-add-kb151-support.patch
" "
subpackages="$pkgname-dev" subpackages="$pkgname-dev"
builddir="$srcdir/linux-$_tag" builddir="$srcdir/linux-$_tag"
@ -98,7 +99,7 @@ dev() {
sha512sums=" sha512sums="
1babfb2ca3aa7e55574773ac9faf6136b0de00b2c7690188cb1f7556277b33e9ccf7fc2560e846ba334f0d6327dc4eb03be577f30a936871b653604174295618 linux-postmarketos-allwinner-orange-pi-5.14-20210830-0334.tar.gz 1babfb2ca3aa7e55574773ac9faf6136b0de00b2c7690188cb1f7556277b33e9ccf7fc2560e846ba334f0d6327dc4eb03be577f30a936871b653604174295618 linux-postmarketos-allwinner-orange-pi-5.14-20210830-0334.tar.gz
303646138d8b8e9d41ea9db8c56c010c7380e76e8b1b296cb93ade684dcebc43e3b99222c343466c8b76c036bdfcca1c833745867c975eb1ef1f1bdeed3fc75b config-postmarketos-allwinner.aarch64 053a2cd396eab2cea24115af6bfcf69ef1552ec7064c5019abb0b10c39a60a31b418b08a587aab53a351c4d78191e77f74b6f104f010d3e95201a961fd2066ab config-postmarketos-allwinner.aarch64
1b69490e2d8a366972a85a65a849d441f0fcaf269f86ac5a17e52660663f923a6eb269a45095aab5adbaef1e04cd2526189744033831466c3bb8fa32691f7a4a config-postmarketos-allwinner.armv7 1b69490e2d8a366972a85a65a849d441f0fcaf269f86ac5a17e52660663f923a6eb269a45095aab5adbaef1e04cd2526189744033831466c3bb8fa32691f7a4a config-postmarketos-allwinner.armv7
126e0a65e04f22f14eac1281a69000d9d5b107ed8fd1b52f37e812751f55e6c45b0240ceac61c9d95ae7f0543aaf9d96b85a8532baf59283c077b9945e615367 0001-dts-add-dontbeevil-pinephone-devkit.patch 126e0a65e04f22f14eac1281a69000d9d5b107ed8fd1b52f37e812751f55e6c45b0240ceac61c9d95ae7f0543aaf9d96b85a8532baf59283c077b9945e615367 0001-dts-add-dontbeevil-pinephone-devkit.patch
1dc710f5abacdd5698169d5e985efeca8114986c774c3d65e89812d08ceb3db5ebdc6dd64dd76a262c761f3bfc3ffb6bc237fd5236bd1f89c5975d12e42eda04 0002-dts-add-pinetab-dev-old-display-panel.patch 1dc710f5abacdd5698169d5e985efeca8114986c774c3d65e89812d08ceb3db5ebdc6dd64dd76a262c761f3bfc3ffb6bc237fd5236bd1f89c5975d12e42eda04 0002-dts-add-pinetab-dev-old-display-panel.patch
@ -114,4 +115,5 @@ c61d4f86eddecca99df1ea1323f988e575f9c49130b64a0c50d61028ff96e24aaa3131fb3731e62e
902708a5a8dd8a815d3d1793933d307c551e3c10368d1805431b70691ee5d4438b7146c466549f457468e365f94073a35ae3304928af7581e5dc91ba5c8fa682 0012-ARM-dts-sun6i-Add-Lark-FreeMe-70.2S-tablet.patch 902708a5a8dd8a815d3d1793933d307c551e3c10368d1805431b70691ee5d4438b7146c466549f457468e365f94073a35ae3304928af7581e5dc91ba5c8fa682 0012-ARM-dts-sun6i-Add-Lark-FreeMe-70.2S-tablet.patch
2feeab0a6c3db46e514d45c9708f351c6d7dfb0bf951a5cb6f2dc01b4bdc8d4c46931000758a819a6d7317b16cb1933bb3946e6a78cbf448cc77f57a56c503bf 0013-sunxi-mmc-h6-fix.patch 2feeab0a6c3db46e514d45c9708f351c6d7dfb0bf951a5cb6f2dc01b4bdc8d4c46931000758a819a6d7317b16cb1933bb3946e6a78cbf448cc77f57a56c503bf 0013-sunxi-mmc-h6-fix.patch
22af33264090dac027ee054b4345a07f0b2ee077e2ae1620e83960bfeea096169aec710973fdd50531ed4f1db6cfd59b5796cd235316cb3512aee034f741a694 0014-arm64-dts-allwinner-orangepi-3-fix-ethernet.patch 22af33264090dac027ee054b4345a07f0b2ee077e2ae1620e83960bfeea096169aec710973fdd50531ed4f1db6cfd59b5796cd235316cb3512aee034f741a694 0014-arm64-dts-allwinner-orangepi-3-fix-ethernet.patch
20efcc7169620ee3114e3b1a11c92cacafe87ffd4bf248a6ba3b36916e4b89cf37d3099535e811769de8b735c2730b2eb313f2bb17d4bd7fd7979dc5f7750d06 0015-add-kb151-support.patch
" "

3
main/linux-postmarketos-allwinner/config-postmarketos-allwinner.aarch64
View file

@ -1959,6 +1959,7 @@ CONFIG_KEYBOARD_GPIO=y
# CONFIG_KEYBOARD_TCA6416 is not set # CONFIG_KEYBOARD_TCA6416 is not set
# CONFIG_KEYBOARD_TCA8418 is not set # CONFIG_KEYBOARD_TCA8418 is not set
# CONFIG_KEYBOARD_MATRIX is not set # CONFIG_KEYBOARD_MATRIX is not set
CONFIG_KEYBOARD_KB151=y
# CONFIG_KEYBOARD_LM8323 is not set # CONFIG_KEYBOARD_LM8323 is not set
# CONFIG_KEYBOARD_LM8333 is not set # CONFIG_KEYBOARD_LM8333 is not set
# CONFIG_KEYBOARD_MAX7359 is not set # CONFIG_KEYBOARD_MAX7359 is not set
@ -5708,7 +5709,7 @@ CONFIG_CRC32_SLICEBY8=y
# CONFIG_CRC4 is not set # CONFIG_CRC4 is not set
CONFIG_CRC7=y CONFIG_CRC7=y
CONFIG_LIBCRC32C=y CONFIG_LIBCRC32C=y
# CONFIG_CRC8 is not set CONFIG_CRC8=y
CONFIG_XXHASH=y CONFIG_XXHASH=y
CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
# CONFIG_RANDOM32_SELFTEST is not set # CONFIG_RANDOM32_SELFTEST is not set