From: Daniel Golle <dgolle@allnet.de>
To: <linux-wireless@vger.kernel.org>
Cc: <users@rt2x00.serialmonkey.com>, <juhosg@openwrt.org>,
<sgruszka@redhat.com>, <helmut.schaa@googlemail.com>,
<gwingerde@gmail.com>, <john@phrozen.org>
Subject: [PATCH 1/3] rt2x00: allow overriding eeprom through platform_data
Date: Tue, 11 Dec 2012 12:03:53 +0200 [thread overview]
Message-ID: <20121211100350.GA7813@earthship.arig> (raw)
[-- Attachment #1: Type: text/plain, Size: 11869 bytes --]
Signed-off-by: Daniel Golle <dgolle@allnet.de>
create mode 100644 drivers/net/wireless/rt2x00/rt2x00eeprom.c
create mode 100644 include/linux/rt2x00_platform.h
diff --git a/drivers/net/wireless/rt2x00/Kconfig b/drivers/net/wireless/rt2x00/Kconfig
index c7548da..e3b9dab 100644
--- a/drivers/net/wireless/rt2x00/Kconfig
+++ b/drivers/net/wireless/rt2x00/Kconfig
@@ -60,6 +60,7 @@ config RT2800PCI
select RT2X00_LIB_PCI if PCI
select RT2X00_LIB_SOC if RALINK_RT288X || RALINK_RT305X
select RT2X00_LIB_FIRMWARE
+ select RT2X00_LIB_EEPROM
select RT2X00_LIB_CRYPTO
select CRC_CCITT
select EEPROM_93CX6
@@ -212,6 +213,9 @@ config RT2X00_LIB_FIRMWARE
config RT2X00_LIB_CRYPTO
boolean
+config RT2X00_LIB_EEPROM
+ boolean
+
config RT2X00_LIB_LEDS
boolean
default y if (RT2X00_LIB=y && LEDS_CLASS=y) || (RT2X00_LIB=m && LEDS_CLASS!=n)
diff --git a/drivers/net/wireless/rt2x00/Makefile b/drivers/net/wireless/rt2x00/Makefile
index 349d5b8..7ea55a4 100644
--- a/drivers/net/wireless/rt2x00/Makefile
+++ b/drivers/net/wireless/rt2x00/Makefile
@@ -7,6 +7,7 @@ rt2x00lib-$(CONFIG_RT2X00_LIB_DEBUGFS) += rt2x00debug.o
rt2x00lib-$(CONFIG_RT2X00_LIB_CRYPTO) += rt2x00crypto.o
rt2x00lib-$(CONFIG_RT2X00_LIB_FIRMWARE) += rt2x00firmware.o
rt2x00lib-$(CONFIG_RT2X00_LIB_LEDS) += rt2x00leds.o
+rt2x00lib-$(CONFIG_RT2X00_LIB_EEPROM) += rt2x00eeprom.o
obj-$(CONFIG_RT2X00_LIB) += rt2x00lib.o
obj-$(CONFIG_RT2X00_LIB_PCI) += rt2x00pci.o
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 9224d87..cad50cd 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -89,20 +89,10 @@ static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
}
-#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X)
-static void rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
-{
- void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE);
-
- memcpy_fromio(rt2x00dev->eeprom, base_addr, EEPROM_SIZE);
-
- iounmap(base_addr);
-}
-#else
-static inline void rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
+static void rt2800pci_read_eeprom_file(struct rt2x00_dev *rt2x00dev)
{
+ memcpy(rt2x00dev->eeprom, rt2x00dev->eeprom_file->data, EEPROM_SIZE);
}
-#endif /* CONFIG_RALINK_RT288X || CONFIG_RALINK_RT305X */
#ifdef CONFIG_PCI
static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
@@ -322,6 +312,20 @@ static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
}
/*
+ * EEPROM file functions.
+ */
+static char *rt2800pci_get_eeprom_file_name(struct rt2x00_dev *rt2x00dev)
+{
+ struct rt2x00_platform_data *pdata;
+
+ pdata = rt2x00dev->dev->platform_data;
+ if (pdata)
+ return pdata->eeprom_file_name;
+
+ return NULL;
+}
+
+/*
* Initialization functions.
*/
static bool rt2800pci_get_entry_state(struct queue_entry *entry)
@@ -972,8 +976,9 @@ static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
*/
static void rt2800pci_read_eeprom(struct rt2x00_dev *rt2x00dev)
{
- if (rt2x00_is_soc(rt2x00dev))
- rt2800pci_read_eeprom_soc(rt2x00dev);
+ if (rt2x00_is_soc(rt2x00dev) ||
+ test_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags))
+ rt2800pci_read_eeprom_file(rt2x00dev);
else if (rt2800pci_efuse_detect(rt2x00dev))
rt2800pci_read_eeprom_efuse(rt2x00dev);
else
@@ -1033,6 +1038,7 @@ static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
.get_firmware_name = rt2800pci_get_firmware_name,
.check_firmware = rt2800_check_firmware,
.load_firmware = rt2800_load_firmware,
+ .get_eeprom_file_name = rt2800pci_get_eeprom_file_name,
.initialize = rt2x00pci_initialize,
.uninitialize = rt2x00pci_uninitialize,
.get_entry_state = rt2800pci_get_entry_state,
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index 0751b35..355cff5 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -39,6 +39,7 @@
#include <linux/input-polldev.h>
#include <linux/kfifo.h>
#include <linux/hrtimer.h>
+#include <linux/rt2x00_platform.h>
#include <net/mac80211.h>
@@ -560,6 +561,7 @@ struct rt2x00lib_ops {
const u8 *data, const size_t len);
int (*load_firmware) (struct rt2x00_dev *rt2x00dev,
const u8 *data, const size_t len);
+ char *(*get_eeprom_file_name) (struct rt2x00_dev *rt2x00dev);
/*
* Device initialization/deinitialization handlers.
@@ -720,6 +722,7 @@ enum rt2x00_capability_flags {
REQUIRE_SW_SEQNO,
REQUIRE_HT_TX_DESC,
REQUIRE_PS_AUTOWAKE,
+ REQUIRE_EEPROM_FILE,
/*
* Capabilities
@@ -989,6 +992,11 @@ struct rt2x00_dev {
const struct firmware *fw;
/*
+ * EEPROM image.
+ */
+ const struct firmware *eeprom_file;
+
+ /*
* FIFO for storing tx status reports between isr and tasklet.
*/
DECLARE_KFIFO_PTR(txstatus_fifo, u32);
diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 3248b42..d454488 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -1207,6 +1207,10 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
rt2x00dev->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
+ retval = rt2x00lib_load_eeprom_file(rt2x00dev);
+ if (retval)
+ goto exit;
+
/*
* Initialize work.
*/
@@ -1331,6 +1335,11 @@ void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
*/
if (rt2x00dev->drv_data)
kfree(rt2x00dev->drv_data);
+
+ /*
+ * Free EEPROM image.
+ */
+ rt2x00lib_free_eeprom_file(rt2x00dev);
}
EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
diff --git a/drivers/net/wireless/rt2x00/rt2x00eeprom.c b/drivers/net/wireless/rt2x00/rt2x00eeprom.c
new file mode 100644
index 0000000..d80eff4
--- /dev/null
+++ b/drivers/net/wireless/rt2x00/rt2x00eeprom.c
@@ -0,0 +1,98 @@
+/*
+ Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+ Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
+ <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: rt2x00lib
+ Abstract: rt2x00 eeprom file loading routines.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "rt2x00.h"
+#include "rt2x00lib.h"
+
+static int rt2x00lib_request_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+ const struct firmware *ee;
+ char *ee_name;
+ int retval;
+
+ ee_name = rt2x00dev->ops->lib->get_eeprom_file_name(rt2x00dev);
+ if (!ee_name) {
+ ERROR(rt2x00dev,
+ "Invalid EEPROM filename.\n"
+ "Please file bug report to %s.\n", DRV_PROJECT);
+ return -EINVAL;
+ }
+
+ INFO(rt2x00dev, "Loading EEPROM data from '%s'.\n", ee_name);
+
+ retval = request_firmware(&ee, ee_name, rt2x00dev->dev);
+ if (retval) {
+ ERROR(rt2x00dev, "Failed to request EEPROM.\n");
+ return retval;
+ }
+
+ if (!ee || !ee->size || !ee->data) {
+ ERROR(rt2x00dev, "Failed to read EEPROM file.\n");
+ retval = -ENOENT;
+ goto err_exit;
+ }
+
+ if (ee->size != rt2x00dev->ops->eeprom_size) {
+ ERROR(rt2x00dev,
+ "EEPROM file size is invalid, it should be %d bytes\n",
+ rt2x00dev->ops->eeprom_size);
+ retval = -EINVAL;
+ goto err_release_ee;
+ }
+
+ rt2x00dev->eeprom_file = ee;
+ return 0;
+
+err_release_ee:
+ release_firmware(ee);
+err_exit:
+ return retval;
+}
+
+int rt2x00lib_load_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+ int retval;
+
+ if (!test_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags))
+ return 0;
+
+ if (!rt2x00dev->eeprom_file) {
+ retval = rt2x00lib_request_eeprom_file(rt2x00dev);
+ if (retval)
+ return retval;
+ }
+
+ return 0;
+}
+
+void rt2x00lib_free_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+ release_firmware(rt2x00dev->eeprom_file);
+ rt2x00dev->eeprom_file = NULL;
+}
diff --git a/drivers/net/wireless/rt2x00/rt2x00lib.h b/drivers/net/wireless/rt2x00/rt2x00lib.h
index a093598..fc9ad6f 100644
--- a/drivers/net/wireless/rt2x00/rt2x00lib.h
+++ b/drivers/net/wireless/rt2x00/rt2x00lib.h
@@ -322,6 +322,22 @@ static inline void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
#endif /* CONFIG_RT2X00_LIB_FIRMWARE */
/*
+ * EEPROM file handlers.
+ */
+#ifdef CONFIG_RT2X00_LIB_EEPROM
+int rt2x00lib_load_eeprom_file(struct rt2x00_dev *rt2x00dev);
+void rt2x00lib_free_eeprom_file(struct rt2x00_dev *rt2x00dev);
+#else
+static inline int rt2x00lib_load_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+ return 0;
+}
+static inline void rt2x00lib_free_eeprom_file(struct rt2x00_dev *rt2x00dev)
+{
+}
+#endif /* CONFIG_RT2X00_LIB_EEPROM_FILE */
+
+/*
* Debugfs handlers.
*/
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c
index a0c8cae..ceadf87 100644
--- a/drivers/net/wireless/rt2x00/rt2x00pci.c
+++ b/drivers/net/wireless/rt2x00/rt2x00pci.c
@@ -254,6 +254,7 @@ exit:
int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops)
{
struct ieee80211_hw *hw;
+ struct rt2x00_platform_data *pdata;
struct rt2x00_dev *rt2x00dev;
int retval;
u16 chip;
@@ -297,6 +298,12 @@ int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops)
rt2x00dev->irq = pci_dev->irq;
rt2x00dev->name = pci_name(pci_dev);
+ /* if we get passed the name of a eeprom_file_name, then use this in
+ favour of the eeprom */
+ pdata = rt2x00dev->dev->platform_data;
+ if (pdata && pdata->eeprom_file_name)
+ set_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags);
+
if (pci_is_pcie(pci_dev))
rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
else
diff --git a/drivers/net/wireless/rt2x00/rt2x00soc.c b/drivers/net/wireless/rt2x00/rt2x00soc.c
index 2aa5c38..43dfc8f 100644
--- a/drivers/net/wireless/rt2x00/rt2x00soc.c
+++ b/drivers/net/wireless/rt2x00/rt2x00soc.c
@@ -94,6 +94,7 @@ int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops)
rt2x00dev->hw = hw;
rt2x00dev->irq = platform_get_irq(pdev, 0);
rt2x00dev->name = pdev->dev.driver->name;
+ set_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags);
rt2x00_set_chip_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
diff --git a/include/linux/rt2x00_platform.h b/include/linux/rt2x00_platform.h
new file mode 100644
index 0000000..80effa7
--- /dev/null
+++ b/include/linux/rt2x00_platform.h
@@ -0,0 +1,19 @@
+/*
+ * Platform data definition for the rt2x00 driver
+ *
+ * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * 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.
+ *
+ */
+
+#ifndef _RT2X00_PLATFORM_H
+#define _RT2X00_PLATFORM_H
+
+struct rt2x00_platform_data {
+ char *eeprom_file_name;
+};
+
+#endif /* _RT2X00_PLATFORM_H */
--
1.8.0.1
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
next reply other threads:[~2012-12-11 10:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-11 10:03 Daniel Golle [this message]
2012-12-11 21:40 ` [PATCH 1/3] rt2x00: allow overriding eeprom through platform_data Gertjan van Wingerde
2012-12-12 19:09 ` Gabor Juhos
2012-12-12 7:36 ` Stanislaw Gruszka
2012-12-12 19:12 ` Gabor Juhos
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