rt2x00: Add rt2x00soc bus module

Add new library module for SoC drivers.
This is needed to fully support the platform
driver part of rt2800pci.

Based on original patch from Felix.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 159 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00soc.c b/drivers/net/wireless/rt2x00/rt2x00soc.c
new file mode 100644
index 000000000000..539568c48953
--- /dev/null
+++ b/drivers/net/wireless/rt2x00/rt2x00soc.c
@@ -0,0 +1,159 @@
+/*
+        Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
+        <http://rt2x00.serialmonkey.com>
+
+        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.
+
+        This program is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program; if not, write to the
+        Free Software Foundation, Inc.,
+        59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+        Module: rt2x00soc
+        Abstract: rt2x00 generic soc device routines.
+ */
+
+#include <linux/bug.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include "rt2x00.h"
+#include "rt2x00soc.h"
+
+static void rt2x00soc_free_reg(struct rt2x00_dev *rt2x00dev)
+{
+        kfree(rt2x00dev->rf);
+        rt2x00dev->rf = NULL;
+
+        kfree(rt2x00dev->eeprom);
+        rt2x00dev->eeprom = NULL;
+}
+
+static int rt2x00soc_alloc_reg(struct rt2x00_dev *rt2x00dev)
+{
+        struct platform_device *pdev = to_platform_device(rt2x00dev->dev);
+        struct resource *res;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res)
+                return -ENODEV;
+
+        rt2x00dev->csr.base = (void __iomem *)KSEG1ADDR(res->start);
+        if (!rt2x00dev->csr.base)
+                goto exit;
+
+        rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
+        if (!rt2x00dev->eeprom)
+                goto exit;
+
+        rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
+        if (!rt2x00dev->rf)
+                goto exit;
+
+        return 0;
+
+exit:
+        ERROR_PROBE("Failed to allocate registers.\n");
+        rt2x00soc_free_reg(rt2x00dev);
+
+        return -ENOMEM;
+}
+
+int rt2x00soc_probe(struct platform_device *pdev,
+                    const unsigned short chipset,
+                    const struct rt2x00_ops *ops)
+{
+        struct ieee80211_hw *hw;
+        struct rt2x00_dev *rt2x00dev;
+        int retval;
+
+        hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
+        if (!hw) {
+                ERROR_PROBE("Failed to allocate hardware.\n");
+                return -ENOMEM;
+        }
+
+        platform_set_drvdata(pdev, hw);
+
+        rt2x00dev = hw->priv;
+        rt2x00dev->dev = &pdev->dev;
+        rt2x00dev->ops = ops;
+        rt2x00dev->hw = hw;
+        rt2x00dev->irq = platform_get_irq(pdev, 0);
+        rt2x00dev->name = pdev->dev.driver->name;
+
+        rt2x00_set_chip_rt(rt2x00dev, chipset);
+
+        retval = rt2x00soc_alloc_reg(rt2x00dev);
+        if (retval)
+                goto exit_free_device;
+
+        retval = rt2x00lib_probe_dev(rt2x00dev);
+        if (retval)
+                goto exit_free_reg;
+
+        return 0;
+
+exit_free_reg:
+        rt2x00soc_free_reg(rt2x00dev);
+
+exit_free_device:
+        ieee80211_free_hw(hw);
+
+        return retval;
+}
+
+int rt2x00soc_remove(struct platform_device *pdev)
+{
+        struct ieee80211_hw *hw = platform_get_drvdata(pdev);
+        struct rt2x00_dev *rt2x00dev = hw->priv;
+
+        /*
+         * Free all allocated data.
+         */
+        rt2x00lib_remove_dev(rt2x00dev);
+        rt2x00soc_free_reg(rt2x00dev);
+        ieee80211_free_hw(hw);
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(rt2x00soc_remove);
+
+#ifdef CONFIG_PM
+int rt2x00soc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        struct ieee80211_hw *hw = platform_get_drvdata(pdev);
+        struct rt2x00_dev *rt2x00dev = hw->priv;
+
+        return rt2x00lib_suspend(rt2x00dev, state);
+}
+EXPORT_SYMBOL_GPL(rt2x00soc_suspend);
+
+int rt2x00soc_resume(struct platform_device *pdev)
+{
+        struct ieee80211_hw *hw = platform_get_drvdata(pdev);
+        struct rt2x00_dev *rt2x00dev = hw->priv;
+
+        return rt2x00lib_resume(rt2x00dev);
+}
+EXPORT_SYMBOL_GPL(rt2x00soc_resume);
+#endif /* CONFIG_PM */
+
+/*
+ * rt2x00soc module information.
+ */
+MODULE_AUTHOR(DRV_PROJECT);
+MODULE_VERSION(DRV_VERSION);
+MODULE_DESCRIPTION("rt2x00 soc library");
+MODULE_LICENSE("GPL");