80 lines
2.2 KiB
Diff
80 lines
2.2 KiB
Diff
From a7f268af31dddf763fe3dbe9cbf96ea77e0540e0 Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Sat, 17 Aug 2013 19:31:41 +0200
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Subject: [PATCH] rt2x00: rt2800lib: introduce RT2800_HAS_HIGH_SHARED_MEM flag
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Some chipsets have more than 16KB of shared memory.
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Introduce a new rt2800 specific flag to indicate that
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and add a helper function which helps to check the
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presence of the new flag.
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Also enable the new flag for the RT3593 chipset which
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has 24KB of shared memory. The flag can also be used
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for other chipsets, but none of those has been tested
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yet.
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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---
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Changes since v1:
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- don't enable the new flag for RT3071 and RT5592
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---
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drivers/net/wireless/rt2x00/rt2800lib.c | 4 ++++
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drivers/net/wireless/rt2x00/rt2800lib.h | 13 +++++++++++++
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2 files changed, 17 insertions(+)
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--- a/drivers/net/wireless/rt2x00/rt2800lib.c
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+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
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@@ -7711,6 +7711,7 @@ static int rt2800_probe_rt(struct rt2x00
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int rt2800_probe_hw(struct rt2x00_dev *rt2x00dev)
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{
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+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
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int retval;
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u32 reg;
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@@ -7718,6 +7719,9 @@ int rt2800_probe_hw(struct rt2x00_dev *r
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if (retval)
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return retval;
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+ if (rt2x00_rt(rt2x00dev, RT3593))
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+ __set_bit(RT2800_HAS_HIGH_SHARED_MEM, &drv_data->rt2800_flags);
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+
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/*
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* Allocate eeprom data.
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*/
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--- a/drivers/net/wireless/rt2x00/rt2800lib.h
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+++ b/drivers/net/wireless/rt2x00/rt2800lib.h
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@@ -20,6 +20,10 @@
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#ifndef RT2800LIB_H
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#define RT2800LIB_H
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+enum rt2800_flag {
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+ RT2800_HAS_HIGH_SHARED_MEM,
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+};
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+
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/* RT2800 driver data structure */
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struct rt2800_drv_data {
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u8 calibration_bw20;
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@@ -29,6 +33,8 @@ struct rt2800_drv_data {
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u8 txmixer_gain_24g;
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u8 txmixer_gain_5g;
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unsigned int tbtt_tick;
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+
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+ unsigned long rt2800_flags;
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};
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struct rt2800_ops {
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@@ -61,6 +67,13 @@ struct rt2800_ops {
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__le32 *(*drv_get_txwi)(struct queue_entry *entry);
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};
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+static inline bool rt2800_has_high_shared_mem(struct rt2x00_dev *rt2x00dev)
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+{
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+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
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+
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+ return test_bit(RT2800_HAS_HIGH_SHARED_MEM, &drv_data->rt2800_flags);
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+}
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+
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static inline void rt2800_register_read(struct rt2x00_dev *rt2x00dev,
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const unsigned int offset,
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u32 *value)
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