[package] mac80211: add preliminary support for the AR913x SoCs

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13835 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 222 insertions, 0 deletions

diff --git a/package/mac80211/patches/408-ath9k-get-EEPROM-contents-from-platform-data-on-AHB.patch b/package/mac80211/patches/408-ath9k-get-EEPROM-contents-from-platform-data-on-AHB.patch
new file mode 100644
index 000000000..03464db7a
--- /dev/null
+++ b/package/mac80211/patches/408-ath9k-get-EEPROM-contents-from-platform-data-on-AHB.patch
@@ -0,0 +1,222 @@
+From 1781a259c5c34d63279b997bded2db672b3665d2 Mon Sep 17 00:00:00 2001
+From: Gabor Juhos <juhosg@openwrt.org>
+Date: Fri, 2 Jan 2009 16:13:46 +0100
+Subject: [RFC 08/12] ath9k: get EEPROM contents from platform data on AHB bus
+
+On the AR913x SOCs we have to provide EEPROM contents via platform_data,
+because accessing the flash via MMIO is not safe. Additionally different
+boards may store the radio calibration data at different locations.
+
+Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
+Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
+---
+ drivers/net/wireless/ath9k/ahb.c    |   27 ++++++++++++++++++
+ drivers/net/wireless/ath9k/core.h   |    2 +
+ drivers/net/wireless/ath9k/eeprom.c |   51 ++--------------------------------
+ drivers/net/wireless/ath9k/pci.c    |   19 +++++++++++++
+ include/linux/ath9k_platform.h      |   28 +++++++++++++++++++
+ 5 files changed, 79 insertions(+), 48 deletions(-)
+
+--- a/drivers/net/wireless/ath9k/ahb.c
++++ b/drivers/net/wireless/ath9k/ahb.c
+@@ -18,6 +18,7 @@
+ 
+ #include <linux/nl80211.h>
+ #include <linux/platform_device.h>
++#include <linux/ath9k_platform.h>
+ #include "core.h"
+ #include "reg.h"
+ #include "hw.h"
+@@ -101,6 +102,24 @@ static void ath_ahb_cleanup(struct ath_s
+ 	platform_set_drvdata(pdev, NULL);
+ }
+ 
++static bool ath_ahb_eeprom_read(struct ath_hal *ah, u32 off, u16 *data)
++{
++	struct ath_softc *sc = ah->ah_sc;
++	struct platform_device *pdev = to_platform_device(sc->dev);
++	struct ath9k_platform_data *pdata;
++
++	pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
++	if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
++		DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
++			"%s: flash read failed, offset %08x is out of range\n",
++				__func__, off);
++		return false;
++	}
++
++	*data = pdata->eeprom_data[off];
++	return true;
++}
++
+ static struct ath_bus_ops ath_ahb_bus_ops  = {
+ 	.dma_map_single_to_device = ath_ahb_map_single_to_device,
+ 	.dma_unmap_single_to_device = ath_ahb_unmap_single_to_device,
+@@ -118,6 +137,8 @@ static struct ath_bus_ops ath_ahb_bus_op
+ 	.read_cachesize = ath_ahb_read_cachesize,
+ 
+ 	.cleanup = ath_ahb_cleanup,
++
++	.eeprom_read = ath_ahb_eeprom_read,
+ };
+ 
+ static int ath_ahb_probe(struct platform_device *pdev)
+@@ -130,6 +151,12 @@ static int ath_ahb_probe(struct platform
+ 	int ret = 0;
+ 	struct ath_hal *ah;
+ 
++	if (!pdev->dev.platform_data) {
++		dev_err(&pdev->dev, "no platform data specified\n");
++		ret = -EINVAL;
++		goto err_out;
++	}
++
+ 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	if (res == NULL) {
+ 		dev_err(&pdev->dev, "no memory resource found\n");
+--- a/drivers/net/wireless/ath9k/core.h
++++ b/drivers/net/wireless/ath9k/core.h
+@@ -726,6 +726,8 @@ struct ath_bus_ops {
+ 	void		(*read_cachesize)(struct ath_softc *sc, int *csz);
+ 
+ 	void		(*cleanup)(struct ath_softc *sc);
++
++	bool		(*eeprom_read)(struct ath_hal *ah, u32 off, u16 *data);
+ };
+ 
+ struct ath_softc {
+--- a/drivers/net/wireless/ath9k/eeprom.c
++++ b/drivers/net/wireless/ath9k/eeprom.c
+@@ -91,53 +91,11 @@ static inline bool ath9k_hw_get_lower_up
+ 	return false;
+ }
+ 
+-static bool ath9k_hw_eeprom_read(struct ath_hal *ah, u32 off, u16 *data)
+-{
+-	(void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
+-
+-	if (!ath9k_hw_wait(ah,
+-			   AR_EEPROM_STATUS_DATA,
+-			   AR_EEPROM_STATUS_DATA_BUSY |
+-			   AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0)) {
+-		return false;
+-	}
+-
+-	*data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
+-		   AR_EEPROM_STATUS_DATA_VAL);
+-
+-	return true;
+-}
+-
+-static int ath9k_hw_flash_map(struct ath_hal *ah)
+-{
+-	struct ath_hal_5416 *ahp = AH5416(ah);
+-
+-	ahp->ah_cal_mem = ioremap(AR5416_EEPROM_START_ADDR, AR5416_EEPROM_MAX);
+-
+-	if (!ahp->ah_cal_mem) {
+-		DPRINTF(ah->ah_sc, ATH_DBG_EEPROM,
+-			"cannot remap eeprom region \n");
+-		return -EIO;
+-	}
+-
+-	return 0;
+-}
+-
+-static bool ath9k_hw_flash_read(struct ath_hal *ah, u32 off, u16 *data)
+-{
+-	struct ath_hal_5416 *ahp = AH5416(ah);
+-
+-	*data = ioread16(ahp->ah_cal_mem + off);
+-
+-	return true;
+-}
+-
+ static inline bool ath9k_hw_nvram_read(struct ath_hal *ah, u32 off, u16 *data)
+ {
+-	if (ath9k_hw_use_flash(ah))
+-		return ath9k_hw_flash_read(ah, off, data);
+-	else
+-		return ath9k_hw_eeprom_read(ah, off, data);
++	struct ath_softc *sc = ah->ah_sc;
++
++	return sc->bus_ops->eeprom_read(ah, off, data);
+ }
+ 
+ static bool ath9k_hw_fill_4k_eeprom(struct ath_hal *ah)
+@@ -2805,9 +2763,6 @@ int ath9k_hw_eeprom_attach(struct ath_ha
+ 	int status;
+ 	struct ath_hal_5416 *ahp = AH5416(ah);
+ 
+-	if (ath9k_hw_use_flash(ah))
+-		ath9k_hw_flash_map(ah);
+-
+ 	if (AR_SREV_9285(ah))
+ 		ahp->ah_eep_map = EEP_MAP_4KBITS;
+ 	else
+--- a/drivers/net/wireless/ath9k/pci.c
++++ b/drivers/net/wireless/ath9k/pci.c
+@@ -121,6 +121,23 @@ static void ath_pci_cleanup(struct ath_s
+ 	ieee80211_free_hw(sc->hw);
+ }
+ 
++static bool ath_pci_eeprom_read(struct ath_hal *ah, u32 off, u16 *data)
++{
++	(void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
++
++	if (!ath9k_hw_wait(ah,
++			   AR_EEPROM_STATUS_DATA,
++			   AR_EEPROM_STATUS_DATA_BUSY |
++			   AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0)) {
++		return false;
++	}
++
++	*data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
++		   AR_EEPROM_STATUS_DATA_VAL);
++
++	return true;
++}
++
+ static struct ath_bus_ops ath_pci_bus_ops  = {
+ 	.dma_map_single_to_device = ath_pci_map_single_to_device,
+ 	.dma_unmap_single_to_device = ath_pci_unmap_single_to_device,
+@@ -138,6 +155,8 @@ static struct ath_bus_ops ath_pci_bus_op
+ 	.read_cachesize = ath_pci_read_cachesize,
+ 
+ 	.cleanup = ath_pci_cleanup,
++
++	.eeprom_read = ath_pci_eeprom_read,
+ };
+ 
+ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+--- /dev/null
++++ b/include/linux/ath9k_platform.h
+@@ -0,0 +1,28 @@
++/*
++ * Copyright (c) 2008 Atheros Communications Inc.
++ * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
++ * Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org>
++ *
++ * Permission to use, copy, modify, and/or distribute this software for any
++ * purpose with or without fee is hereby granted, provided that the above
++ * copyright notice and this permission notice appear in all copies.
++ *
++ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
++ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
++ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
++ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
++ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
++ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
++ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
++ */
++
++#ifndef _LINUX_ATH9K_PLATFORM_H
++#define _LINUX_ATH9L_PLATFORM_H
++
++#define ATH9K_PLAT_EEP_MAX_WORDS	2048
++
++struct ath9k_platform_data {
++	u16 eeprom_data[ATH9K_PLAT_EEP_MAX_WORDS];
++};
++
++#endif /* _LINUX_ATH9K_PLATFORM_H */