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Message-Id: <1304166750-31125-4-git-send-email-dsd@laptop.org>
Date: Sat, 30 Apr 2011 13:32:22 +0100
From: Daniel Drake <dsd@...top.org>
To: tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, x86@...nel.org
Cc: linux-kernel@...r.kernel.org, dilinger@...ued.net,
Daniel Drake <dsd@...top.org>
Subject: [PATCH 03/11] x86, olpc: rename olpc-xo1 to olpc-xo1-pm
Based on earlier review comments, we'll no longer try to stick all of
our XO-1 goodies in a single driver. We'll split it into a power management
driver, and an EC/SCI driver.
As a first step, rename olpc-xo1 to olpc-xo1-pm, and make it builtin
instead of modular.
---
arch/x86/Kconfig | 6 +-
arch/x86/platform/olpc/Makefile | 2 +-
arch/x86/platform/olpc/olpc-xo1-pm.c | 123 ++++++++++++++++++++++++++++++
arch/x86/platform/olpc/olpc-xo1.c | 136 ----------------------------------
4 files changed, 127 insertions(+), 140 deletions(-)
create mode 100644 arch/x86/platform/olpc/olpc-xo1-pm.c
delete mode 100644 arch/x86/platform/olpc/olpc-xo1.c
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0945ed8..3db9ca5 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2066,11 +2066,11 @@ config OLPC
Add support for detecting the unique features of the OLPC
XO hardware.
-config OLPC_XO1
- tristate "OLPC XO-1 support"
+config OLPC_XO1_PM
+ bool "OLPC XO-1 Power Management"
depends on OLPC && MFD_CS5535
---help---
- Add support for non-essential features of the OLPC XO-1 laptop.
+ Add support for poweroff of the OLPC XO-1 laptop.
endif # X86_32
diff --git a/arch/x86/platform/olpc/Makefile b/arch/x86/platform/olpc/Makefile
index 81c5e21..cd25038 100644
--- a/arch/x86/platform/olpc/Makefile
+++ b/arch/x86/platform/olpc/Makefile
@@ -1,2 +1,2 @@
obj-$(CONFIG_OLPC) += olpc.o olpc_ofw.o olpc_dt.o
-obj-$(CONFIG_OLPC_XO1) += olpc-xo1.o
+obj-$(CONFIG_OLPC_XO1_PM) += olpc-xo1-pm.o
diff --git a/arch/x86/platform/olpc/olpc-xo1-pm.c b/arch/x86/platform/olpc/olpc-xo1-pm.c
new file mode 100644
index 0000000..a2a59d3
--- /dev/null
+++ b/arch/x86/platform/olpc/olpc-xo1-pm.c
@@ -0,0 +1,123 @@
+/*
+ * Support for power management features of the OLPC XO-1 laptop
+ *
+ * Copyright (C) 2010 Andres Salomon <dilinger@...ued.net>
+ * Copyright (C) 2010 One Laptop per Child
+ * Copyright (C) 2006 Red Hat, Inc.
+ * Copyright (C) 2006 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/cs5535.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/mfd/core.h>
+
+#include <asm/io.h>
+#include <asm/olpc.h>
+
+#define DRV_NAME "olpc-xo1-pm"
+
+static unsigned long acpi_base;
+static unsigned long pms_base;
+
+static void xo1_power_off(void)
+{
+ printk(KERN_INFO "OLPC XO-1 power off sequence...\n");
+
+ /* Enable all of these controls with 0 delay */
+ outl(0x40000000, pms_base + CS5536_PM_SCLK);
+ outl(0x40000000, pms_base + CS5536_PM_IN_SLPCTL);
+ outl(0x40000000, pms_base + CS5536_PM_WKXD);
+ outl(0x40000000, pms_base + CS5536_PM_WKD);
+
+ /* Clear status bits (possibly unnecessary) */
+ outl(0x0002ffff, pms_base + CS5536_PM_SSC);
+ outl(0xffffffff, acpi_base + CS5536_PM_GPE0_STS);
+
+ /* Write SLP_EN bit to start the machinery */
+ outl(0x00002000, acpi_base + CS5536_PM1_CNT);
+}
+
+static int __devinit xo1_pm_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ int err;
+
+ /* don't run on non-XOs */
+ if (!machine_is_olpc())
+ return -ENODEV;
+
+ err = mfd_cell_enable(pdev);
+ if (err)
+ return err;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "can't fetch device resource info\n");
+ return -EIO;
+ }
+ if (strcmp(pdev->name, "cs5535-pms") == 0)
+ pms_base = res->start;
+ else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0)
+ acpi_base = res->start;
+
+ /* If we have both addresses, we can override the poweroff hook */
+ if (pms_base && acpi_base) {
+ pm_power_off = xo1_power_off;
+ printk(KERN_INFO "OLPC XO-1 support registered\n");
+ }
+
+ return 0;
+}
+
+static int __devexit xo1_pm_remove(struct platform_device *pdev)
+{
+ mfd_cell_disable(pdev);
+
+ if (strcmp(pdev->name, "cs5535-pms") == 0)
+ pms_base = 0;
+ else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0)
+ acpi_base = 0;
+
+ pm_power_off = NULL;
+ return 0;
+}
+
+static struct platform_driver cs5535_pms_driver = {
+ .driver = {
+ .name = "cs5535-pms",
+ .owner = THIS_MODULE,
+ },
+ .probe = xo1_pm_probe,
+ .remove = __devexit_p(xo1_pm_remove),
+};
+
+static struct platform_driver cs5535_acpi_driver = {
+ .driver = {
+ .name = "olpc-xo1-pm-acpi",
+ .owner = THIS_MODULE,
+ },
+ .probe = xo1_pm_probe,
+ .remove = __devexit_p(xo1_pm_remove),
+};
+
+static int __init xo1_pm_init(void)
+{
+ int r;
+
+ r = platform_driver_register(&cs5535_pms_driver);
+ if (r)
+ return r;
+
+ r = platform_driver_register(&cs5535_acpi_driver);
+ if (r)
+ platform_driver_unregister(&cs5535_pms_driver);
+
+ return r;
+}
+arch_initcall(xo1_pm_init);
diff --git a/arch/x86/platform/olpc/olpc-xo1.c b/arch/x86/platform/olpc/olpc-xo1.c
deleted file mode 100644
index a63e948..0000000
--- a/arch/x86/platform/olpc/olpc-xo1.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Support for features of the OLPC XO-1 laptop
- *
- * Copyright (C) 2010 Andres Salomon <dilinger@...ued.net>
- * Copyright (C) 2010 One Laptop per Child
- * Copyright (C) 2006 Red Hat, Inc.
- * Copyright (C) 2006 Advanced Micro Devices, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#include <linux/cs5535.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/pm.h>
-#include <linux/mfd/core.h>
-
-#include <asm/io.h>
-#include <asm/olpc.h>
-
-#define DRV_NAME "olpc-xo1"
-
-static unsigned long acpi_base;
-static unsigned long pms_base;
-
-static void xo1_power_off(void)
-{
- printk(KERN_INFO "OLPC XO-1 power off sequence...\n");
-
- /* Enable all of these controls with 0 delay */
- outl(0x40000000, pms_base + CS5536_PM_SCLK);
- outl(0x40000000, pms_base + CS5536_PM_IN_SLPCTL);
- outl(0x40000000, pms_base + CS5536_PM_WKXD);
- outl(0x40000000, pms_base + CS5536_PM_WKD);
-
- /* Clear status bits (possibly unnecessary) */
- outl(0x0002ffff, pms_base + CS5536_PM_SSC);
- outl(0xffffffff, acpi_base + CS5536_PM_GPE0_STS);
-
- /* Write SLP_EN bit to start the machinery */
- outl(0x00002000, acpi_base + CS5536_PM1_CNT);
-}
-
-static int __devinit olpc_xo1_probe(struct platform_device *pdev)
-{
- struct resource *res;
- int err;
-
- /* don't run on non-XOs */
- if (!machine_is_olpc())
- return -ENODEV;
-
- err = mfd_cell_enable(pdev);
- if (err)
- return err;
-
- res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!res) {
- dev_err(&pdev->dev, "can't fetch device resource info\n");
- return -EIO;
- }
- if (strcmp(pdev->name, "cs5535-pms") == 0)
- pms_base = res->start;
- else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0)
- acpi_base = res->start;
-
- /* If we have both addresses, we can override the poweroff hook */
- if (pms_base && acpi_base) {
- pm_power_off = xo1_power_off;
- printk(KERN_INFO "OLPC XO-1 support registered\n");
- }
-
- return 0;
-}
-
-static int __devexit olpc_xo1_remove(struct platform_device *pdev)
-{
- mfd_cell_disable(pdev);
-
- if (strcmp(pdev->name, "cs5535-pms") == 0)
- pms_base = 0;
- else if (strcmp(pdev->name, "olpc-xo1-pm-acpi") == 0)
- acpi_base = 0;
-
- pm_power_off = NULL;
- return 0;
-}
-
-static struct platform_driver cs5535_pms_drv = {
- .driver = {
- .name = "cs5535-pms",
- .owner = THIS_MODULE,
- },
- .probe = olpc_xo1_probe,
- .remove = __devexit_p(olpc_xo1_remove),
-};
-
-static struct platform_driver cs5535_acpi_drv = {
- .driver = {
- .name = "olpc-xo1-pm-acpi",
- .owner = THIS_MODULE,
- },
- .probe = olpc_xo1_probe,
- .remove = __devexit_p(olpc_xo1_remove),
-};
-
-static int __init olpc_xo1_init(void)
-{
- int r;
-
- r = platform_driver_register(&cs5535_pms_drv);
- if (r)
- return r;
-
- r = platform_driver_register(&cs5535_acpi_drv);
- if (r)
- platform_driver_unregister(&cs5535_pms_drv);
-
- return r;
-}
-
-static void __exit olpc_xo1_exit(void)
-{
- platform_driver_unregister(&cs5535_acpi_drv);
- platform_driver_unregister(&cs5535_pms_drv);
-}
-
-MODULE_AUTHOR("Daniel Drake <dsd@...top.org>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:cs5535-pms");
-
-module_init(olpc_xo1_init);
-module_exit(olpc_xo1_exit);
--
1.7.4.4
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