mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13835 3c298f89-4303-0410-b956-a3cf2f4a3e73
223 lines
6.6 KiB
Diff
223 lines
6.6 KiB
Diff
From 1781a259c5c34d63279b997bded2db672b3665d2 Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Fri, 2 Jan 2009 16:13:46 +0100
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Subject: [RFC 08/12] ath9k: get EEPROM contents from platform data on AHB bus
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On the AR913x SOCs we have to provide EEPROM contents via platform_data,
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because accessing the flash via MMIO is not safe. Additionally different
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boards may store the radio calibration data at different locations.
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
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---
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drivers/net/wireless/ath9k/ahb.c | 27 ++++++++++++++++++
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drivers/net/wireless/ath9k/core.h | 2 +
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drivers/net/wireless/ath9k/eeprom.c | 51 ++--------------------------------
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drivers/net/wireless/ath9k/pci.c | 19 +++++++++++++
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include/linux/ath9k_platform.h | 28 +++++++++++++++++++
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5 files changed, 79 insertions(+), 48 deletions(-)
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--- a/drivers/net/wireless/ath9k/ahb.c
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+++ b/drivers/net/wireless/ath9k/ahb.c
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@@ -18,6 +18,7 @@
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#include <linux/nl80211.h>
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#include <linux/platform_device.h>
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+#include <linux/ath9k_platform.h>
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#include "core.h"
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#include "reg.h"
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#include "hw.h"
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@@ -101,6 +102,24 @@ static void ath_ahb_cleanup(struct ath_s
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platform_set_drvdata(pdev, NULL);
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}
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+static bool ath_ahb_eeprom_read(struct ath_hal *ah, u32 off, u16 *data)
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+{
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+ struct ath_softc *sc = ah->ah_sc;
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+ struct platform_device *pdev = to_platform_device(sc->dev);
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+ struct ath9k_platform_data *pdata;
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+
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+ pdata = (struct ath9k_platform_data *) pdev->dev.platform_data;
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+ if (off >= (ARRAY_SIZE(pdata->eeprom_data))) {
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+ DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
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+ "%s: flash read failed, offset %08x is out of range\n",
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+ __func__, off);
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+ return false;
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+ }
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+
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+ *data = pdata->eeprom_data[off];
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+ return true;
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+}
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+
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static struct ath_bus_ops ath_ahb_bus_ops = {
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.dma_map_single_to_device = ath_ahb_map_single_to_device,
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.dma_unmap_single_to_device = ath_ahb_unmap_single_to_device,
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@@ -118,6 +137,8 @@ static struct ath_bus_ops ath_ahb_bus_op
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.read_cachesize = ath_ahb_read_cachesize,
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.cleanup = ath_ahb_cleanup,
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+
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+ .eeprom_read = ath_ahb_eeprom_read,
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};
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static int ath_ahb_probe(struct platform_device *pdev)
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@@ -130,6 +151,12 @@ static int ath_ahb_probe(struct platform
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int ret = 0;
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struct ath_hal *ah;
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+ if (!pdev->dev.platform_data) {
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+ dev_err(&pdev->dev, "no platform data specified\n");
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+ ret = -EINVAL;
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+ goto err_out;
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+ }
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+
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (res == NULL) {
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dev_err(&pdev->dev, "no memory resource found\n");
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--- a/drivers/net/wireless/ath9k/core.h
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+++ b/drivers/net/wireless/ath9k/core.h
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@@ -726,6 +726,8 @@ struct ath_bus_ops {
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void (*read_cachesize)(struct ath_softc *sc, int *csz);
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void (*cleanup)(struct ath_softc *sc);
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+
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+ bool (*eeprom_read)(struct ath_hal *ah, u32 off, u16 *data);
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};
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struct ath_softc {
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--- a/drivers/net/wireless/ath9k/eeprom.c
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+++ b/drivers/net/wireless/ath9k/eeprom.c
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@@ -91,53 +91,11 @@ static inline bool ath9k_hw_get_lower_up
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return false;
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}
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-static bool ath9k_hw_eeprom_read(struct ath_hal *ah, u32 off, u16 *data)
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-{
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- (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
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-
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- if (!ath9k_hw_wait(ah,
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- AR_EEPROM_STATUS_DATA,
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- AR_EEPROM_STATUS_DATA_BUSY |
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- AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0)) {
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- return false;
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- }
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-
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- *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
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- AR_EEPROM_STATUS_DATA_VAL);
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-
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- return true;
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-}
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-
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-static int ath9k_hw_flash_map(struct ath_hal *ah)
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-{
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- struct ath_hal_5416 *ahp = AH5416(ah);
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-
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- ahp->ah_cal_mem = ioremap(AR5416_EEPROM_START_ADDR, AR5416_EEPROM_MAX);
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-
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- if (!ahp->ah_cal_mem) {
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- DPRINTF(ah->ah_sc, ATH_DBG_EEPROM,
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- "cannot remap eeprom region \n");
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- return -EIO;
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- }
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-
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- return 0;
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-}
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-
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-static bool ath9k_hw_flash_read(struct ath_hal *ah, u32 off, u16 *data)
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-{
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- struct ath_hal_5416 *ahp = AH5416(ah);
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-
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- *data = ioread16(ahp->ah_cal_mem + off);
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-
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- return true;
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-}
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-
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static inline bool ath9k_hw_nvram_read(struct ath_hal *ah, u32 off, u16 *data)
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{
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- if (ath9k_hw_use_flash(ah))
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- return ath9k_hw_flash_read(ah, off, data);
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- else
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- return ath9k_hw_eeprom_read(ah, off, data);
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+ struct ath_softc *sc = ah->ah_sc;
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+
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+ return sc->bus_ops->eeprom_read(ah, off, data);
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}
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static bool ath9k_hw_fill_4k_eeprom(struct ath_hal *ah)
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@@ -2805,9 +2763,6 @@ int ath9k_hw_eeprom_attach(struct ath_ha
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int status;
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struct ath_hal_5416 *ahp = AH5416(ah);
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- if (ath9k_hw_use_flash(ah))
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- ath9k_hw_flash_map(ah);
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-
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if (AR_SREV_9285(ah))
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ahp->ah_eep_map = EEP_MAP_4KBITS;
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else
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--- a/drivers/net/wireless/ath9k/pci.c
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+++ b/drivers/net/wireless/ath9k/pci.c
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@@ -121,6 +121,23 @@ static void ath_pci_cleanup(struct ath_s
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ieee80211_free_hw(sc->hw);
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}
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+static bool ath_pci_eeprom_read(struct ath_hal *ah, u32 off, u16 *data)
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+{
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+ (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
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+
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+ if (!ath9k_hw_wait(ah,
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+ AR_EEPROM_STATUS_DATA,
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+ AR_EEPROM_STATUS_DATA_BUSY |
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+ AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0)) {
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+ return false;
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+ }
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+
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+ *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
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+ AR_EEPROM_STATUS_DATA_VAL);
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+
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+ return true;
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+}
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+
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static struct ath_bus_ops ath_pci_bus_ops = {
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.dma_map_single_to_device = ath_pci_map_single_to_device,
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.dma_unmap_single_to_device = ath_pci_unmap_single_to_device,
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@@ -138,6 +155,8 @@ static struct ath_bus_ops ath_pci_bus_op
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.read_cachesize = ath_pci_read_cachesize,
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.cleanup = ath_pci_cleanup,
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+
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+ .eeprom_read = ath_pci_eeprom_read,
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};
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static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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--- /dev/null
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+++ b/include/linux/ath9k_platform.h
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@@ -0,0 +1,28 @@
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+/*
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+ * Copyright (c) 2008 Atheros Communications Inc.
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+ * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org>
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+ * Copyright (c) 2009 Imre Kaloz <kaloz@openwrt.org>
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+ *
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+ * Permission to use, copy, modify, and/or distribute this software for any
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+ * purpose with or without fee is hereby granted, provided that the above
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+ * copyright notice and this permission notice appear in all copies.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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+ */
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+
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+#ifndef _LINUX_ATH9K_PLATFORM_H
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+#define _LINUX_ATH9L_PLATFORM_H
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+
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+#define ATH9K_PLAT_EEP_MAX_WORDS 2048
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+
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+struct ath9k_platform_data {
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+ u16 eeprom_data[ATH9K_PLAT_EEP_MAX_WORDS];
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+};
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+
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+#endif /* _LINUX_ATH9K_PLATFORM_H */
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