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core/linux-raspberrypi add hardware rng and nxp-pcf8523 changes

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This commit is contained in:
pepedog 2013-02-04 17:28:41 -06:00
parent 3cb6844d12
commit 797ad8a01a
3 changed files with 51 additions and 326 deletions
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13
core/linux-raspberrypi/PKGBUILD
View file

@ -9,7 +9,7 @@ pkgname=('linux-raspberrypi' 'linux-headers-raspberrypi')
_kernelname=${pkgname#linux}
_basekernel=3.6
pkgver=${_basekernel}.11
pkgrel=4
pkgrel=5
arch=('arm armv6h')
url="http://www.kernel.org/"
license=('GPL2')
@ -21,7 +21,8 @@ source=('config'
'args-uncompressed.txt'
'boot-uncompressed.txt'
'imagetool-uncompressed.py'
'nxp-pcf8523.patch')
'https://raspy-juice.googlecode.com/svn/trunk/linux-rtc/0001-rtc-pcf8523.patch'
'https://raspy-juice.googlecode.com/svn/trunk/linux-rtc/0002-pcf8523-i2c-register-dt.patch')
build() {
git clone --depth 1 https://github.com/raspberrypi/linux.git
@ -33,7 +34,8 @@ build() {
# Add the USB_QUIRK_RESET_RESUME for several webcams
# FS#26528
patch -Np1 -i "${srcdir}/nxp-pcf8523.patch"
patch -Np1 -i "${srcdir}/0001-rtc-pcf8523.patch"
patch -Np1 -i "${srcdir}/0002-pcf8523-i2c-register-dt.patch"
#nxp-pcf8523 RTC patch
patch -Np1 -i "${srcdir}/usb-add-reset-resume-quirk-for-several-webcams.patch"
@ -262,11 +264,12 @@ package_linux-headers-raspberrypi() {
rm -rf "${pkgdir}"/usr/src/linux-${_kernver}/arch/{alpha,arm26,avr32,blackfin,cris,frv,h8300,ia64,m32r,m68k,m68knommu,mips,microblaze,mn10300,parisc,powerpc,ppc,s390,sh,sh64,sparc,sparc64,um,v850,x86,xtensa}
}
md5sums=('a36790d26055ecd0478c991a15676ae7'
md5sums=('5e0da33033bcf5903c81a7a9a0c79550'
'9d3c56a4b999c8bfbd4018089a62f662'
'd00814b57448895e65fbbc800e8a58ba'
'9335d1263fd426215db69841a380ea26'
'a00e424e2fbb8c5a5f77ba2c4871bed4'
'2f82dbe5752af65ff409d737caf11954'
'644b8a8e2729658212d76061dc2062b9')
'ca74031c9e9bfc9f4a668924dcb37f4c'
'1e46f207dcf2dd9392a099a437bb9b3e')

75
core/linux-raspberrypi/config
View file

@ -1,6 +1,6 @@
#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 3.6.11-4 Kernel Configuration
# Linux/arm 3.6.11-5 Kernel Configuration
#
CONFIG_ARM=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
@ -540,7 +540,9 @@ CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=y
CONFIG_IP_PNP_RARP=y
CONFIG_NET_IPIP=m
# CONFIG_NET_IPGRE_DEMUX is not set
CONFIG_NET_IPGRE_DEMUX=m
CONFIG_NET_IPGRE=m
CONFIG_NET_IPGRE_BROADCAST=y
CONFIG_IP_MROUTE=y
# CONFIG_IP_MROUTE_MULTIPLE_TABLES is not set
# CONFIG_IP_PIMSM_V1 is not set
@ -1223,26 +1225,27 @@ CONFIG_ISCSI_TCP=m
# CONFIG_SCSI_OSD_INITIATOR is not set
# CONFIG_ATA is not set
CONFIG_MD=y
CONFIG_BLK_DEV_MD=m
CONFIG_MD_LINEAR=m
CONFIG_MD_RAID0=m
CONFIG_MD_RAID1=m
CONFIG_MD_RAID10=m
CONFIG_MD_RAID456=m
CONFIG_MD_MULTIPATH=m
CONFIG_MD_FAULTY=m
CONFIG_BLK_DEV_DM=m
CONFIG_BLK_DEV_MD=y
CONFIG_MD_AUTODETECT=y
CONFIG_MD_LINEAR=y
CONFIG_MD_RAID0=y
CONFIG_MD_RAID1=y
CONFIG_MD_RAID10=y
CONFIG_MD_RAID456=y
CONFIG_MD_MULTIPATH=y
CONFIG_MD_FAULTY=y
CONFIG_BLK_DEV_DM=y
# CONFIG_DM_DEBUG is not set
CONFIG_DM_CRYPT=m
CONFIG_DM_CRYPT=y
CONFIG_DM_SNAPSHOT=m
# CONFIG_DM_THIN_PROVISIONING is not set
CONFIG_DM_MIRROR=m
CONFIG_DM_RAID=m
CONFIG_DM_MIRROR=y
CONFIG_DM_RAID=y
CONFIG_DM_LOG_USERSPACE=m
CONFIG_DM_ZERO=m
CONFIG_DM_MULTIPATH=m
CONFIG_DM_MULTIPATH_QL=m
CONFIG_DM_MULTIPATH_ST=m
CONFIG_DM_MULTIPATH=y
CONFIG_DM_MULTIPATH_QL=y
CONFIG_DM_MULTIPATH_ST=y
CONFIG_DM_DELAY=m
CONFIG_DM_UEVENT=y
# CONFIG_DM_FLAKEY is not set
@ -1344,6 +1347,7 @@ CONFIG_PPP_FILTER=y
CONFIG_PPP_MPPE=m
CONFIG_PPP_MULTILINK=y
CONFIG_PPPOE=m
# CONFIG_PPTP is not set
# CONFIG_PPPOL2TP is not set
CONFIG_PPP_ASYNC=m
CONFIG_PPP_SYNC_TTY=m
@ -1414,6 +1418,7 @@ CONFIG_ATH9K_HTC=m
CONFIG_CARL9170=m
CONFIG_CARL9170_LEDS=y
CONFIG_CARL9170_WPC=y
# CONFIG_CARL9170_HWRNG is not set
# CONFIG_ATH6KL is not set
CONFIG_B43=m
CONFIG_B43_SSB=y
@ -1423,9 +1428,11 @@ CONFIG_B43_PHY_N=y
CONFIG_B43_PHY_LP=y
# CONFIG_B43_PHY_HT is not set
CONFIG_B43_LEDS=y
CONFIG_B43_HWRNG=y
# CONFIG_B43_DEBUG is not set
CONFIG_B43LEGACY=m
CONFIG_B43LEGACY_LEDS=y
CONFIG_B43LEGACY_HWRNG=y
CONFIG_B43LEGACY_DEBUG=y
CONFIG_B43LEGACY_DMA=y
CONFIG_B43LEGACY_PIO=y
@ -1618,7 +1625,11 @@ CONFIG_CONSOLE_POLL=y
CONFIG_TTY_PRINTK=y
# CONFIG_HVC_DCC is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
CONFIG_HW_RANDOM=m
# CONFIG_HW_RANDOM_TIMERIOMEM is not set
# CONFIG_HW_RANDOM_ATMEL is not set
# CONFIG_HW_RANDOM_EXYNOS is not set
CONFIG_HW_RANDOM_BCM2708=m
# CONFIG_R3964 is not set
CONFIG_RAW_DRIVER=y
CONFIG_MAX_RAW_DEVS=256
@ -1638,7 +1649,7 @@ CONFIG_I2C_MUX_GPIO=m
CONFIG_I2C_MUX_PCA9541=m
CONFIG_I2C_MUX_PCA954x=m
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=m
CONFIG_I2C_ALGOBIT=y
#
# I2C Hardware Bus support
@ -1650,8 +1661,8 @@ CONFIG_I2C_ALGOBIT=m
CONFIG_I2C_BCM2708=m
CONFIG_I2C_BCM2708_BAUDRATE=100000
# CONFIG_I2C_DESIGNWARE_PLATFORM is not set
CONFIG_I2C_GPIO=m
CONFIG_I2C_NOMADIK=m
CONFIG_I2C_GPIO=y
CONFIG_I2C_NOMADIK=y
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PCA_PLATFORM is not set
# CONFIG_I2C_PXA_PCI is not set
@ -2932,7 +2943,7 @@ CONFIG_RTC_DRV_RS5C372=m
CONFIG_RTC_DRV_ISL1208=m
CONFIG_RTC_DRV_ISL12022=m
CONFIG_RTC_DRV_X1205=m
CONFIG_RTC_DRV_PCF8523=y
CONFIG_RTC_DRV_PCF8523=m
CONFIG_RTC_DRV_PCF8563=m
CONFIG_RTC_DRV_PCF8583=m
CONFIG_RTC_DRV_M41T80=m
@ -3085,18 +3096,18 @@ CONFIG_EXT4_FS_SECURITY=y
CONFIG_JBD2=y
# CONFIG_JBD2_DEBUG is not set
CONFIG_FS_MBCACHE=y
CONFIG_REISERFS_FS=m
CONFIG_REISERFS_FS=y
# CONFIG_REISERFS_CHECK is not set
# CONFIG_REISERFS_PROC_INFO is not set
CONFIG_REISERFS_FS_XATTR=y
CONFIG_REISERFS_FS_POSIX_ACL=y
CONFIG_REISERFS_FS_SECURITY=y
CONFIG_JFS_FS=m
CONFIG_JFS_FS=y
CONFIG_JFS_POSIX_ACL=y
CONFIG_JFS_SECURITY=y
# CONFIG_JFS_DEBUG is not set
CONFIG_JFS_STATISTICS=y
CONFIG_XFS_FS=m
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_XFS_RT=y
@ -3441,12 +3452,12 @@ CONFIG_SECURITY_NETWORK_XFRM=y
# CONFIG_EVM is not set
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
CONFIG_XOR_BLOCKS=m
CONFIG_ASYNC_CORE=m
CONFIG_ASYNC_MEMCPY=m
CONFIG_ASYNC_XOR=m
CONFIG_ASYNC_PQ=m
CONFIG_ASYNC_RAID6_RECOV=m
CONFIG_XOR_BLOCKS=y
CONFIG_ASYNC_CORE=y
CONFIG_ASYNC_MEMCPY=y
CONFIG_ASYNC_XOR=y
CONFIG_ASYNC_PQ=y
CONFIG_ASYNC_RAID6_RECOV=y
CONFIG_CRYPTO=y
#
@ -3557,7 +3568,7 @@ CONFIG_BINARY_PRINTF=y
#
# Library routines
#
CONFIG_RAID6_PQ=m
CONFIG_RAID6_PQ=y
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y

289
core/linux-raspberrypi/nxp-pcf8523.patch
View file

@ -1,289 +0,0 @@
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 53eb4e5..0a22dbd 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -249,6 +249,15 @@ config RTC_DRV_X1205
This driver can also be built as a module. If so, the module
will be called rtc-x1205.
+config RTC_DRV_PCF8523
+ tristate "NXP PCF8523"
+ help
+ If you say yes here you get support for the
+ NXP PCF8523 RTC chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-pcf8523.
+
config RTC_DRV_PCF8563
tristate "Philips PCF8563/Epson RTC8564"
help
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 6e69823..7812730 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -71,6 +71,7 @@ obj-$(CONFIG_RTC_DRV_MV) += rtc-mv.o
obj-$(CONFIG_RTC_DRV_NUC900) += rtc-nuc900.o
obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o
obj-$(CONFIG_RTC_DRV_PCAP) += rtc-pcap.o
+obj-$(CONFIG_RTC_DRV_PCF8523) += rtc-pcf8523.o
obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o
obj-$(CONFIG_RTC_DRV_PCF8583) += rtc-pcf8583.o
obj-$(CONFIG_RTC_DRV_PCF2123) += rtc-pcf2123.o
diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c
new file mode 100644
index 0000000..9880c42
--- /dev/null
+++ b/drivers/rtc/rtc-pcf8523.c
@@ -0,0 +1,251 @@
+/*
+ * An I2C driver for the NXP PCF8523 RTC
+ * Copyright 2011 Promwad Innovation Company
+ *
+ * Author: Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
+ * Promwad Innovation Company, http://promwad.com/
+ *
+ * based on the pcf8563 driver
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/i2c.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#define DRV_VERSION "1.0"
+
+#define PCF8523_REG_CTL1 0x00 /* control and status registers */
+#define PCF8523_REG_CTL2 0x01
+#define PCF8523_REG_CTL3 0x02
+
+#define PCF8523_REG_SC 0x03 /* datetime */
+#define PCF8523_REG_MN 0x04
+#define PCF8523_REG_HR 0x05
+#define PCF8523_REG_DM 0x06
+#define PCF8523_REG_DW 0x07
+#define PCF8523_REG_MO 0x08
+#define PCF8523_REG_YR 0x09
+
+#define PCF8523_REG_AMN 0x0A /* alarm */
+#define PCF8523_REG_AHR 0x0B
+#define PCF8523_REG_ADM 0x0C
+#define PCF8523_REG_ADW 0x0D
+
+#define PCF8523_REG_CLKO 0x0F /* clock out */
+#define PCF8523_REG_TMRAC 0x10 /* timer control */
+#define PCF8523_REG_TMRA 0x11 /* timer */
+#define PCF8523_REG_TMRBC 0x12 /* timer control */
+#define PCF8523_REG_TMRB 0x13 /* timer */
+
+#define PCF8523_CTL3_BLF (1 << 2)
+
+static struct i2c_driver pcf8523_driver;
+
+struct pcf8523 {
+ struct rtc_device *rtc;
+};
+
+/*
+ * In the routines that deal directly with the pcf8523 hardware, we use
+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
+ */
+static int pcf8523_get_datetime(struct i2c_client *client, struct rtc_time *tm)
+{
+ /* struct pcf8523 *pcf8523 = i2c_get_clientdata(client); */
+ unsigned char buf[14] = { PCF8523_REG_CTL1 };
+
+ struct i2c_msg msgs[] = {
+ { client->addr, 0, 1, buf }, /* setup read ptr */
+ { client->addr, I2C_M_RD, 14, buf }, /* read status + date */
+ };
+
+ /* read registers */
+ if ((i2c_transfer(client->adapter, msgs, 2)) != 2) {
+ dev_err(&client->dev, "%s: read error\n", __func__);
+ return -EIO;
+ }
+
+ if (buf[PCF8523_REG_CTL3] & PCF8523_CTL3_BLF)
+ dev_info(&client->dev,
+ "low voltage detected, date/time is not reliable.\n");
+
+ dev_dbg(&client->dev,
+ "%s: raw data is ctl1=%02x, ctl2=%02x, ctl3=%02x, "
+ "sec=%02x, min=%02x, hr=%02x, "
+ "mday=%02x, wday=%02x, mon=%02x, year=%02x\n",
+ __func__,
+ buf[0], buf[1], buf[2], buf[3],
+ buf[4], buf[5], buf[6], buf[7],
+ buf[8], buf[9]);
+
+
+ tm->tm_sec = bcd2bin(buf[PCF8523_REG_SC] & 0x7F);
+ tm->tm_min = bcd2bin(buf[PCF8523_REG_MN] & 0x7F);
+ tm->tm_hour = bcd2bin(buf[PCF8523_REG_HR] & 0x3F); /* rtc hr 0-23 */
+ tm->tm_mday = bcd2bin(buf[PCF8523_REG_DM] & 0x3F);
+ tm->tm_wday = buf[PCF8523_REG_DW] & 0x07;
+ tm->tm_mon = bcd2bin(buf[PCF8523_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */
+ tm->tm_year = bcd2bin(buf[PCF8523_REG_YR]);
+ if (tm->tm_year < 70)
+ tm->tm_year += 100; /* assume we are in 1970...2069 */
+
+ dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __func__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ /* the clock can give out invalid datetime, but we cannot return
+ * -EINVAL otherwise hwclock will refuse to set the time on bootup.
+ */
+ if (rtc_valid_tm(tm) < 0)
+ dev_err(&client->dev, "retrieved date/time is not valid.\n");
+
+ return 0;
+}
+
+static int pcf8523_set_datetime(struct i2c_client *client, struct rtc_time *tm)
+{
+ /* struct pcf8523 *pcf8523 = i2c_get_clientdata(client); */
+ int i, err;
+ unsigned char buf[10];
+
+ dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __func__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ /* hours, minutes and seconds */
+ buf[PCF8523_REG_SC] = bin2bcd(tm->tm_sec);
+ buf[PCF8523_REG_MN] = bin2bcd(tm->tm_min);
+ buf[PCF8523_REG_HR] = bin2bcd(tm->tm_hour);
+
+ buf[PCF8523_REG_DM] = bin2bcd(tm->tm_mday);
+
+ /* month, 1 - 12 */
+ buf[PCF8523_REG_MO] = bin2bcd(tm->tm_mon + 1);
+
+ /* year and century */
+ buf[PCF8523_REG_YR] = bin2bcd(tm->tm_year % 100);
+
+ buf[PCF8523_REG_DW] = tm->tm_wday & 0x07;
+
+ /* write register's data */
+ for (i = 0; i < 7; i++) {
+ unsigned char data[2] = { PCF8523_REG_SC + i,
+ buf[PCF8523_REG_SC + i] };
+
+ err = i2c_master_send(client, data, sizeof(data));
+ if (err != sizeof(data)) {
+ dev_err(&client->dev,
+ "%s: err=%d addr=%02x, data=%02x\n",
+ __func__, err, data[0], data[1]);
+ return -EIO;
+ }
+ };
+
+ return 0;
+}
+
+static int pcf8523_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ return pcf8523_get_datetime(to_i2c_client(dev), tm);
+}
+
+static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ return pcf8523_set_datetime(to_i2c_client(dev), tm);
+}
+
+static const struct rtc_class_ops pcf8523_rtc_ops = {
+ .read_time = pcf8523_rtc_read_time,
+ .set_time = pcf8523_rtc_set_time,
+};
+
+static int pcf8523_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct pcf8523 *pcf8523;
+
+ int err = 0;
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
+ return -ENODEV;
+
+ pcf8523 = kzalloc(sizeof(struct pcf8523), GFP_KERNEL);
+ if (!pcf8523)
+ return -ENOMEM;
+
+ dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n");
+
+ i2c_set_clientdata(client, pcf8523);
+
+ pcf8523->rtc = rtc_device_register(pcf8523_driver.driver.name,
+ &client->dev, &pcf8523_rtc_ops, THIS_MODULE);
+
+ if (IS_ERR(pcf8523->rtc)) {
+ err = PTR_ERR(pcf8523->rtc);
+ goto exit_kfree;
+ }
+
+ return 0;
+
+exit_kfree:
+ kfree(pcf8523);
+
+ return err;
+}
+
+static int pcf8523_remove(struct i2c_client *client)
+{
+ struct pcf8523 *pcf8523 = i2c_get_clientdata(client);
+
+ if (pcf8523->rtc)
+ rtc_device_unregister(pcf8523->rtc);
+
+ kfree(pcf8523);
+
+ return 0;
+}
+
+static const struct i2c_device_id pcf8523_id[] = {
+ { "pcf8523", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, pcf8523_id);
+
+static struct i2c_driver pcf8523_driver = {
+ .driver = {
+ .name = "rtc-pcf8523",
+ },
+ .probe = pcf8523_probe,
+ .remove = pcf8523_remove,
+ .id_table = pcf8523_id,
+};
+
+static int __init pcf8523_init(void)
+{
+ return i2c_add_driver(&pcf8523_driver);
+}
+
+static void __exit pcf8523_exit(void)
+{
+ i2c_del_driver(&pcf8523_driver);
+}
+
+MODULE_AUTHOR("Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>");
+MODULE_DESCRIPTION("NXP PCF8523");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+module_init(pcf8523_init);
+module_exit(pcf8523_exit);