2021-06-21 14:16:00

by MeiChia Chiu

[permalink] [raw]
Subject: [PATCH] mt76: mt7915: add LED support

From: MeiChia Chiu <[email protected]>

Initialize brightness_set and blink_set callbacks to enable LED support.

Signed-off-by: MeiChia Chiu <[email protected]>
Signed-off-by: Ryder Lee <[email protected]>
Signed-off-by: Money Wang <[email protected]>
---
.../net/wireless/mediatek/mt76/mt7915/init.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7915/mmio.c | 6 +++--
.../net/wireless/mediatek/mt76/mt7915/regs.h | 19 ++++++++++++++
3 files changed, 92 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index e027273..defb0ec 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -151,6 +151,64 @@ static int mt7915_thermal_init(struct mt7915_phy *phy)
return 0;
}

+static void mt7915_led_set_config(struct led_classdev *led_cdev,
+ u8 delay_on, u8 delay_off)
+{
+ struct mt7915_dev *dev;
+ struct mt76_dev *mt76;
+ u32 val;
+
+ mt76 = container_of(led_cdev, struct mt76_dev, led_cdev);
+ dev = container_of(mt76, struct mt7915_dev, mt76);
+
+ /* select TX blink mode, 2: only data frames */
+ mt76_rmw_field(dev, MT_TMAC_TCR0(0), MT_TMAC_TCR0_TX_BLINK, 2);
+
+ /* enable LED */
+ mt76_wr(dev, MT_LED_EN(0), 1);
+
+ /* set LED Tx blink on/off time */
+ val = FIELD_PREP(MT_LED_TX_BLINK_ON_MASK, delay_on) |
+ FIELD_PREP(MT_LED_TX_BLINK_OFF_MASK, delay_off);
+ mt76_wr(dev, MT_LED_TX_BLINK(0), val);
+
+ /* control LED */
+ val = MT_LED_CTRL_BLINK_MODE | MT_LED_CTRL_KICK;
+ if (dev->mt76.led_al)
+ val |= MT_LED_CTRL_POLARITY;
+
+ mt76_wr(dev, MT_LED_CTRL(0), val);
+ mt76_clear(dev, MT_LED_CTRL(0), MT_LED_CTRL_KICK);
+}
+
+static int mt7915_led_set_blink(struct led_classdev *led_cdev,
+ unsigned long *delay_on,
+ unsigned long *delay_off)
+{
+ u16 delta_on, delta_off;
+
+#define HW_TICK 10
+#define TO_HW_TICK(_t) (((_t) > HW_TICK) ? ((_t) / HW_TICK) : HW_TICK)
+
+ if (*delay_on)
+ delta_on = TO_HW_TICK(*delay_on);
+ if (*delay_off)
+ delta_off = TO_HW_TICK(*delay_off);
+
+ mt7915_led_set_config(led_cdev, delta_on, delta_off);
+
+ return 0;
+}
+
+static void mt7915_led_set_brightness(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ if (!brightness)
+ mt7915_led_set_config(led_cdev, 0, 0xff);
+ else
+ mt7915_led_set_config(led_cdev, 0xff, 0);
+}
+
static void
mt7915_init_txpower(struct mt7915_dev *dev,
struct ieee80211_supported_band *sband)
@@ -308,6 +366,11 @@ static void mt7915_mac_init(struct mt7915_dev *dev)
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
for (i = 0; i < 2; i++)
mt7915_mac_init_band(dev, i);
+
+ if (IS_ENABLED(CONFIG_MT76_LEDS)) {
+ i = dev->mt76.led_pin ? MT_LED_GPIO_MUX3 : MT_LED_GPIO_MUX2;
+ mt76_rmw_field(dev, i, MT_LED_GPIO_SEL_MASK, 4);
+ }
}

static int mt7915_txbf_init(struct mt7915_dev *dev)
@@ -822,6 +885,12 @@ int mt7915_register_device(struct mt7915_dev *dev)
dev->mt76.test_ops = &mt7915_testmode_ops;
#endif

+ /* init led callbacks */
+ if (IS_ENABLED(CONFIG_MT76_LEDS)) {
+ dev->mt76.led_cdev.brightness_set = mt7915_led_set_brightness;
+ dev->mt76.led_cdev.blink_set = mt7915_led_set_blink;
+ }
+
ret = mt76_register_device(&dev->mt76, true, mt76_rates,
ARRAY_SIZE(mt76_rates));
if (ret)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
index af712a9..43f9245 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
@@ -92,10 +92,12 @@ static u32 __mt7915_reg_addr(struct mt7915_dev *dev, u32 addr)
}

if ((addr >= 0x18000000 && addr < 0x18c00000) ||
- (addr >= 0x70000000 && addr < 0x78000000) ||
- (addr >= 0x7c000000 && addr < 0x7c400000))
+ (addr >= 0x70000000 && addr < 0x78000000))
return mt7915_reg_map_l1(dev, addr);

+ if (addr >= 0x7c000000 && addr < 0x7c400000)
+ return mt7915_reg_map_l1(dev, addr - 0x64000000);
+
return mt7915_reg_map_l2(dev, addr);
}

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
index ff31b3d..b1df0bb 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
@@ -57,6 +57,7 @@
#define MT_WF_TMAC(_band, ofs) (MT_WF_TMAC_BASE(_band) + (ofs))

#define MT_TMAC_TCR0(_band) MT_WF_TMAC(_band, 0)
+#define MT_TMAC_TCR0_TX_BLINK GENMASK(7, 6)
#define MT_TMAC_TCR0_TBTT_STOP_CTRL BIT(25)

#define MT_TMAC_CDTR(_band) MT_WF_TMAC(_band, 0x090)
@@ -426,6 +427,10 @@
#define MT_TOP_MISC MT_TOP(0xf0)
#define MT_TOP_MISC_FW_STATE GENMASK(2, 0)

+#define MT_LED_GPIO_MUX2 0x70005058 /* GPIO 18 */
+#define MT_LED_GPIO_MUX3 0x7000505C /* GPIO 26 */
+#define MT_LED_GPIO_SEL_MASK GENMASK(11, 8)
+
#define MT_HW_BOUND 0x70010020
#define MT_HW_CHIPID 0x70010200
#define MT_HW_REV 0x70010204
@@ -438,6 +443,20 @@
#define MT_PCIE_MAC(ofs) (MT_PCIE_MAC_BASE + (ofs))
#define MT_PCIE_MAC_INT_ENABLE MT_PCIE_MAC(0x188)

+#define MT_LED_TOP_BASE 0x7c013000
+#define MT_LED_PHYS(_n) (MT_LED_TOP_BASE + (_n))
+
+#define MT_LED_CTRL(_n) MT_LED_PHYS(0x00 + ((_n) * 4))
+#define MT_LED_CTRL_KICK BIT(7)
+#define MT_LED_CTRL_BLINK_MODE BIT(2)
+#define MT_LED_CTRL_POLARITY BIT(1)
+
+#define MT_LED_TX_BLINK(_n) MT_LED_PHYS(0x10 + ((_n) * 4))
+#define MT_LED_TX_BLINK_ON_MASK GENMASK(7, 0)
+#define MT_LED_TX_BLINK_OFF_MASK GENMASK(15, 8)
+
+#define MT_LED_EN(_n) MT_LED_PHYS(0x40 + ((_n) * 4))
+
#define MT_WF_IRPI_BASE 0x83006000
#define MT_WF_IRPI(ofs) (MT_WF_IRPI_BASE + ((ofs) << 16))

--
2.29.2