Message-Id: <201612141321.30181@pali>
Date:   Wed, 14 Dec 2016 13:21:29 +0100
From:   Pali Rohár <pali.rohar@...il.com>
To:     Pavel Machek <pavel@....cz>, tony@...mide.com
Cc:     Sebastian Reichel <sre@...nel.org>,
        kernel list <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel" <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, khilman@...nel.org,
        aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
        patrikbachan@...il.com, serge@...lyn.com, abcloriens@...il.com
Subject: Re: partial bluetooth success on n900 [was Re: bluetooth/uart timeout handling]

On Wednesday 19 October 2016 11:25:06 Pavel Machek wrote:
> Hi!
> 
> [Ccing lists.]
> 
> > Can you push the patch, which gets further than negotiation into
> > some git branch available to me? I tried to apply your patch to
> > my code, but it did not work for me.
> 
> Ok, I've pushed the branch to kernel.org:
> 
> git push
> git@...olite.kernel.org:pub/scm/linux/kernel/git/pavel/linux-n900.gi
> t bt-2-v4.9:bt-2-v4.9
> 
> In retrospect, I did make some changes to dts, they may be
> neccessary, too.
> 
> If it still does not work, please try with my .config. I'm using
> modules here, using this script:
> 
> pavel@...0:/my/modules$ cat run2
> echo removing...
> sudo killall a.out
> rmmod nokia_h4p
> #rmmod omap_serial
> #rmmod serial_core
> rmmod hci_uart.ko
> #rmmod bcm2048.ko
> echo installing...
> insmod serial_core.ko
> insmod omap-serial.ko
> insmod bcm2048.ko
> insmod hci_uart.ko
> ls -al /dev/ttyO1
> sleep 1
> stty crtscts < /dev/ttyO1
> /my/tui/ofone/a.out &
> 
> For the record, dmesg says:
> 
> Good luck,
> 									Pavel
> 
> [   30.694274] g_ether gadget: notify connect true
> [   30.714080] g_ether gadget: notify speed 425984000
> [  127.719146] ssi-protocol ssi-protocol: WAKELINES TEST OK
> [  218.542694] of_get_named_gpiod_flags: can't parse 'rts-gpio'
> property of node '/ocp@...00000/serial@...6c000[0]'
> [  218.546264] 4806c000.serial: ttyO1 at MMIO 0x4806c000 (irq = 89,
> base_baud = 3000000) is a OMAP UART1
> [  218.574157] of_get_named_gpiod_flags: can't parse 'rts-gpio'
> property of node '/ocp@...00000/serial@...20000[0]'
> [  218.574340] 49020000.serial: ttyO2 at MMIO 0x49020000 (irq = 90,
> base_baud = 3000000) is a OMAP UART2
> [  218.650115] bcm2048: probe
> [  218.650177] bcm2048 4806c000.serial:bluetooth: GPIO lookup for
> consumer reset
> [  218.650177] bcm2048 4806c000.serial:bluetooth: using device tree
> for GPIO lookup
> [  218.650360] of_get_named_gpiod_flags: parsed 'reset-gpios'
> property of node '/ocp@...00000/serial@...6c000/bluetooth[0]' -
> status (0) [  218.650390] bcm2048 4806c000.serial:bluetooth: GPIO
> lookup for consumer host-wakeup
> [  218.650421] bcm2048 4806c000.serial:bluetooth: using device tree
> for GPIO lookup
> [  218.650482] of_get_named_gpiod_flags: parsed 'host-wakeup-gpios'
> property of node '/ocp@...00000/serial@...6c000/bluetooth[0]' -
> status (0)
> [  218.650512] bcm2048 4806c000.serial:bluetooth: GPIO lookup for
> consumer bluetooth-wakeup
> [  218.650543] bcm2048 4806c000.serial:bluetooth: using device tree
> for GPIO lookup
> [  218.650604] of_get_named_gpiod_flags: parsed
> 'bluetooth-wakeup-gpios' property of node
> '/ocp@...00000/serial@...6c000/bluetooth[0]' - status (0)
> [  218.650817] bcm2048 4806c000.serial:bluetooth: parent uart: ttyO1
> [  218.650817] bcm2048 4806c000.serial:bluetooth: sysclk speed: 38400
> kHz
> [  218.650848] bcm2048 4806c000.serial:bluetooth: probe: 0
> [  218.774139] Bluetooth: HCI UART driver ver 2.3
> [  218.774169] Bluetooth: HCI UART protocol H4 registered
> [  218.774169] Bluetooth: HCI UART protocol H4+ registered
> [  218.774169] Bluetooth: HCI UART protocol BCSP registered
> [  218.774200] Bluetooth: HCI UART protocol LL registered
> [  218.774200] Bluetooth: HCI UART protocol ATH3K registered
> [  218.774200] Bluetooth: HCI UART protocol Three-wire (H5)
> registered [  219.904876] tty ttyO1: Nokia H4+ protocol initialized
> with 4806c000.serial:bluetooth!
> [  219.921112] tty ttyO1: Nokia H4+ protocol setup...
> [  219.921142] h4p_reset: reset
> [  219.921142] hci_uart_init_tty
> [  219.983520] h4p_reset: flush
> [  219.983551] h4p_reset: speed
> [  219.983581] tty ttyO1: setting speed to 120000 baud
> [  219.983673] h4p_reset: safety
> [  219.986480] tty ttyO1: wakeup received: 0 -> 1
> [  220.013488] tty ttyO1: wait for cts... received!
> [  220.013519] h4p_reset: flow
> [  220.013549] tty ttyO1: Sending negotiation...
> [  220.013580] tty ttyO1: gpio state: reset=1 wakehost=1 wakebt=1
> [  220.013610] enqueue: hu c304cc80 skb cd4da000
> [  220.017425] tty ttyO1: H4P negotiation:
> [  220.017456] tty ttyO1:     baudrate = 416
> [  220.017486] tty ttyO1:     system clock = 38400
> [  220.017486] tty ttyO1:     manufacturer id = 4
> [  220.017486] tty ttyO1:     version id = 11
> [  220.017578] tty ttyO1: setting speed to 921600 baud
> [  220.043457] tty ttyO1: wait for cts... received!
> [  220.043548] tty ttyO1: Negotiation successful...
> [  220.043579] tty ttyO1: Sending alive packet...
> [  220.043579] enqueue: hu c304cc80 skb cd4dacc0
> [  220.043853] tty ttyO1: Received alive packet!
> [  220.047851] tty ttyO1: FW: Skip negotion packet!
> [  220.047882] tty ttyO1: FW: Skip alive packet!
> [  220.052185] enqueue: hu c304cc80 skb cd4da480
> [  220.055175] enqueue: hu c304cc80 skb cd4dae40
> [  220.058776] enqueue: hu c304cc80 skb cd4da6c0
> [  220.058898] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.058929] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.064605] enqueue: hu c304cc80 skb cd4daf00
> [  220.068389] enqueue: hu c304cc80 skb cd4da0c0
> [  220.068542] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.068542] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.071960] enqueue: hu c304cc80 skb cd4da840
> [  220.072082] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.072082] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.075592] enqueue: hu c304cc80 skb cd4da180
> [  220.079803] enqueue: hu c304cc80 skb cd479cc0
> [  220.084381] enqueue: hu c304cc80 skb cd479180
> [  220.087982] enqueue: hu c304cc80 skb cd4793c0
> [  220.088104] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.088134] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.091522] enqueue: hu c304cc80 skb cd479e40
> [  220.095336] enqueue: hu c304cc80 skb cd479540
> [  220.098876] enqueue: hu c304cc80 skb cd479000
> [  220.102386] enqueue: hu c304cc80 skb cd479600
> [  220.102478] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.102508] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.105987] enqueue: hu c304cc80 skb cd479780
> [  220.109527] enqueue: hu c304cc80 skb cd450cc0
> [  220.109619] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.109649] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.113098] enqueue: hu c304cc80 skb cd484600
> [  220.113220] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.113250] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.116760] enqueue: hu c304cc80 skb cd4a9b40
> [  220.120300] enqueue: hu c304cc80 skb cd77c840
> [  220.124786] enqueue: hu c304cc80 skb cd4f7900
> [  220.128387] enqueue: hu c304cc80 skb c4fb2180
> [  220.131896] enqueue: hu c304cc80 skb c4fb23c0
> [  220.135498] enqueue: hu c304cc80 skb c4fb2cc0
> [  220.139007] enqueue: hu c304cc80 skb c4fb2000
> [  220.142486] enqueue: hu c304cc80 skb cd44fcc0
> [  220.146118] enqueue: hu c304cc80 skb cd4b60c0
> [  220.149627] enqueue: hu c304cc80 skb cf1986c0
> [  220.153106] enqueue: hu c304cc80 skb cf198480
> [  220.156738] enqueue: hu c304cc80 skb cf1980c0
> [  220.160278] enqueue: hu c304cc80 skb cf198240
> [  220.164733] enqueue: hu c304cc80 skb cd49f780
> [  220.168365] enqueue: hu c304cc80 skb cd4daf00
> [  220.171844] enqueue: hu c304cc80 skb cd4da6c0
> [  220.175445] enqueue: hu c304cc80 skb cd4dab40
> [  220.175567] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.175567] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.178955] enqueue: hu c304cc80 skb cd479780
> [  220.182434] enqueue: hu c304cc80 skb cd479540
> [  220.182525] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.182556] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.186035] enqueue: hu c304cc80 skb cd4793c0
> [  220.188140] enqueue: hu c304cc80 skb cd479b40
> [  220.188537] enqueue: hu c304cc80 skb cd484600
> [  220.236480] enqueue: hu c304cc80 skb cd4a9f00
> [  220.237701] enqueue: hu c304cc80 skb cd4f7900
> [  220.238830] enqueue: hu c304cc80 skb c4fb23c0
> [  220.239959] enqueue: hu c304cc80 skb c4fb2b40
> [  220.241119] enqueue: hu c304cc80 skb c3107000
> [  220.242187] enqueue: hu c304cc80 skb cd724240
> [  220.243286] enqueue: hu c304cc80 skb cf198540
> [  220.244781] enqueue: hu c304cc80 skb cf198540
> [  220.245758] enqueue: hu c304cc80 skb cd49f780
> [  220.246612] enqueue: hu c304cc80 skb cd4daf00
> [  220.247436] enqueue: hu c304cc80 skb cd479540
> [  220.248535] tty ttyO1: Sending radio packet...
> [  220.248565] enqueue: hu c304cc80 skb cd479cc0
> [  220.248596] tty ttyO1: Radio packet sent
> [  220.249328] Bluetooth: hci0: Frame reassembly failed (-84)
> [  220.272949] tty ttyO1: wakeup received: 1 -> 0
> [  221.283477] tty ttyO1: radio packet timeout!
> [  221.283630] enqueue: hu c304cc80 skb cd4a9b40
> [  223.363372] Bluetooth: hci0 command 0xfc18 tx timeout
> pavel@...0:~$

In log are still some failures, but ... is bluetooth working now?

I see that you applied this patch: 
https://git.kernel.org/cgit/linux/kernel/git/pavel/linux-n900.git/commit/?id=051aa3fbf03ac770d8344690f5a936a7f04c6884

Looks like that pinmux is in DTS file incorrect. Can somebody verify it? 
Maybe Tony?

-- 
Pali Rohár
pali.rohar@...il.com

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