[kernel] r12150 - in dists/sid/linux-2.6/debian: . patches/bugfix/arm patches/series
Martin Michlmayr
tbm at alioth.debian.org
Fri Aug 29 13:03:35 UTC 2008
Author: tbm
Date: Fri Aug 29 13:03:34 2008
New Revision: 12150
Log:
Backport power-off method for Kurobox Pro.
Added:
dists/sid/linux-2.6/debian/patches/bugfix/arm/kurobox_powerdown.patch
dists/sid/linux-2.6/debian/patches/series/5
Modified:
dists/sid/linux-2.6/debian/changelog
Modified: dists/sid/linux-2.6/debian/changelog
==============================================================================
--- dists/sid/linux-2.6/debian/changelog (original)
+++ dists/sid/linux-2.6/debian/changelog Fri Aug 29 13:03:34 2008
@@ -1,3 +1,10 @@
+linux-2.6 (2.6.26-5) UNRELEASED; urgency=low
+
+ [ Martin Michlmayr ]
+ * Backport power-off method for Kurobox Pro.
+
+ -- Martin Michlmayr <tbm at cyrius.com> Fri, 29 Aug 2008 16:02:27 +0300
+
linux-2.6 (2.6.26-4) unstable; urgency=low
[ maximilian attems ]
Added: dists/sid/linux-2.6/debian/patches/bugfix/arm/kurobox_powerdown.patch
==============================================================================
--- (empty file)
+++ dists/sid/linux-2.6/debian/patches/bugfix/arm/kurobox_powerdown.patch Fri Aug 29 13:03:34 2008
@@ -0,0 +1,181 @@
+2.6.26 backport of
+http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a0087f2fcf5cb4e16502f5334168fbe304af318b
+
+[ARM] Orion: implement power-off method for Kurobox Pro
+Sylver Bruneau [Wed, 30 Apr 2008 06:14:58 +0000 (08:14 +0200)]
+This patch implements the communication with the microcontroller on the
+Kurobox Pro and Linkstation Pro/Live boards. This is allowing to send
+the commands needed to power-off the board correctly.
+
+Signed-off-by: Sylver Bruneau <sylver.bruneau at googlemail.com>
+Acked-by: Russell King <linux at arm.linux.org.uk>
+Signed-off-by: Lennert Buytenhek <buytenh at marvell.com>
+
+diff --git a/arch/arm/mach-orion5x/kurobox_pro-setup.c b/arch/arm/mach-orion5x/kurobox_pro-setup.c
+index f5074b8..7570c8b 100644
+--- a/arch/arm/mach-orion5x/kurobox_pro-setup.c
++++ b/arch/arm/mach-orion5x/kurobox_pro-setup.c
+@@ -13,10 +13,12 @@
+ #include <linux/platform_device.h>
+ #include <linux/pci.h>
+ #include <linux/irq.h>
++#include <linux/delay.h>
+ #include <linux/mtd/physmap.h>
+ #include <linux/mtd/nand.h>
+ #include <linux/mv643xx_eth.h>
+ #include <linux/i2c.h>
++#include <linux/serial_reg.h>
+ #include <linux/ata_platform.h>
+ #include <asm/mach-types.h>
+ #include <asm/gpio.h>
+@@ -179,6 +181,140 @@ static struct mv_sata_platform_data kurobox_pro_sata_data = {
+ };
+
+ /*****************************************************************************
++ * Kurobox Pro specific power off method via UART1-attached microcontroller
++ ****************************************************************************/
++
++#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
++
++static int kurobox_pro_miconread(unsigned char *buf, int count)
++{
++ int i;
++ int timeout;
++
++ for (i = 0; i < count; i++) {
++ timeout = 10;
++
++ while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
++ if (--timeout == 0)
++ break;
++ udelay(1000);
++ }
++
++ if (timeout == 0)
++ break;
++ buf[i] = readl(UART1_REG(RX));
++ }
++
++ /* return read bytes */
++ return i;
++}
++
++static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
++{
++ int i = 0;
++
++ while (count--) {
++ while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
++ barrier();
++ writel(buf[i++], UART1_REG(TX));
++ }
++
++ return 0;
++}
++
++static int kurobox_pro_miconsend(const unsigned char *data, int count)
++{
++ int i;
++ unsigned char checksum = 0;
++ unsigned char recv_buf[40];
++ unsigned char send_buf[40];
++ unsigned char correct_ack[3];
++ int retry = 2;
++
++ /* Generate checksum */
++ for (i = 0; i < count; i++)
++ checksum -= data[i];
++
++ do {
++ /* Send data */
++ kurobox_pro_miconwrite(data, count);
++
++ /* send checksum */
++ kurobox_pro_miconwrite(&checksum, 1);
++
++ if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
++ printk(KERN_ERR ">%s: receive failed.\n", __func__);
++
++ /* send preamble to clear the receive buffer */
++ memset(&send_buf, 0xff, sizeof(send_buf));
++ kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
++
++ /* make dummy reads */
++ mdelay(100);
++ kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
++ } else {
++ /* Generate expected ack */
++ correct_ack[0] = 0x01;
++ correct_ack[1] = data[1];
++ correct_ack[2] = 0x00;
++
++ /* checksum Check */
++ if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
++ recv_buf[3]) & 0xFF) {
++ printk(KERN_ERR ">%s: Checksum Error : "
++ "Received data[%02x, %02x, %02x, %02x]"
++ "\n", __func__, recv_buf[0],
++ recv_buf[1], recv_buf[2], recv_buf[3]);
++ } else {
++ /* Check Received Data */
++ if (correct_ack[0] == recv_buf[0] &&
++ correct_ack[1] == recv_buf[1] &&
++ correct_ack[2] == recv_buf[2]) {
++ /* Interval for next command */
++ mdelay(10);
++
++ /* Receive ACK */
++ return 0;
++ }
++ }
++ /* Received NAK or illegal Data */
++ printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
++ "Received\n", __func__);
++ }
++ } while (retry--);
++
++ /* Interval for next command */
++ mdelay(10);
++
++ return -1;
++}
++
++static void kurobox_pro_power_off(void)
++{
++ const unsigned char watchdogkill[] = {0x01, 0x35, 0x00};
++ const unsigned char shutdownwait[] = {0x00, 0x0c};
++ const unsigned char poweroff[] = {0x00, 0x06};
++ /* 38400 baud divisor */
++ const unsigned divisor = ((ORION5X_TCLK + (8 * 38400)) / (16 * 38400));
++
++ pr_info("%s: triggering power-off...\n", __func__);
++
++ /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
++ writel(0x83, UART1_REG(LCR));
++ writel(divisor & 0xff, UART1_REG(DLL));
++ writel((divisor >> 8) & 0xff, UART1_REG(DLM));
++ writel(0x1b, UART1_REG(LCR));
++ writel(0x00, UART1_REG(IER));
++ writel(0x07, UART1_REG(FCR));
++ writel(0x00, UART1_REG(MCR));
++
++ /* Send the commands to shutdown the Kurobox Pro */
++ kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
++ kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
++ kurobox_pro_miconsend(poweroff, sizeof(poweroff));
++}
++
++/*****************************************************************************
+ * General Setup
+ ****************************************************************************/
+
+@@ -229,6 +365,9 @@ static void __init kurobox_pro_init(void)
+ i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
+ orion5x_eth_init(&kurobox_pro_eth_data);
+ orion5x_sata_init(&kurobox_pro_sata_data);
++
++ /* register Kurobox Pro specific power-off method */
++ pm_power_off = kurobox_pro_power_off;
+ }
+
+ #ifdef CONFIG_MACH_KUROBOX_PRO
Added: dists/sid/linux-2.6/debian/patches/series/5
==============================================================================
--- (empty file)
+++ dists/sid/linux-2.6/debian/patches/series/5 Fri Aug 29 13:03:34 2008
@@ -0,0 +1 @@
++ bugfix/arm/kurobox_powerdown.patch
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