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annotate linux-patch/minpatch-4.4.14/0001-USB-serial-ftdi_sio-add-support-for-FreeCalypso-JTAG.patch @ 161:d3128f3e1bde

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fc-simtool and fc-uicc-tool moved to new fc-pcsc-tools repository
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 12 Feb 2021 05:39:38 +0000
parents d7a1e7a6d6ba
children
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1 From 5af8e2ad7d0295d90cb2bc566f3d935668fb0535 Mon Sep 17 00:00:00 2001
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2 From: "Mychaela N. Falconia" <falcon@freecalypso.org>
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3 Date: Wed, 16 Sep 2020 01:56:29 +0000
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4 Subject: [PATCH 1/3] USB: serial: ftdi_sio: add support for FreeCalypso
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5 JTAG+UART adapters
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6
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7 commit 6cf87e5edd9944e1d3b6efd966ea401effc304ee upstream.
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8
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9 There exist many FT2232-based JTAG+UART adapter designs in which
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10 FT2232 Channel A is used for JTAG and Channel B is used for UART.
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11 The best way to handle them in Linux is to have the ftdi_sio driver
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12 create a ttyUSB device only for Channel B and not for Channel A:
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13 a ttyUSB device for Channel A would be bogus and will disappear as
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14 soon as the user runs OpenOCD or other applications that access
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15 Channel A for JTAG from userspace, causing undesirable noise for
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16 users. The ftdi_sio driver already has a dedicated quirk for such
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Mychaela Falconia <falcon@freecalypso.org>
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17 JTAG+UART FT2232 adapters, and it requires assigning custom USB IDs
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18 to such adapters and adding these IDs to the driver with the
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19 ftdi_jtag_quirk applied.
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20
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21 Boutique hardware manufacturer Falconia Partners LLC has created a
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22 couple of JTAG+UART adapter designs (one buffered, one unbuffered)
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23 as part of FreeCalypso project, and this hardware is specifically made
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24 to be used with Linux hosts, with the intent that Channel A will be
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25 accessed only from userspace via appropriate applications, and that
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26 Channel B will be supported by the ftdi_sio kernel driver, presenting
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27 a standard ttyUSB device to userspace. Toward this end the hardware
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28 manufacturer will be programming FT2232 EEPROMs with custom USB IDs,
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29 specifically with the intent that these IDs will be recognized by
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30 the ftdi_sio driver with the ftdi_jtag_quirk applied.
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31
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32 Signed-off-by: Mychaela N. Falconia <falcon@freecalypso.org>
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33 [johan: insert in PID order and drop unused define]
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34 Cc: stable@vger.kernel.org
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35 Signed-off-by: Johan Hovold <johan@kernel.org>
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36 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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37 ---
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38 drivers/usb/serial/ftdi_sio.c | 5 +++++
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39 drivers/usb/serial/ftdi_sio_ids.h | 7 +++++++
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40 2 files changed, 12 insertions(+)
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41
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42 diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
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43 index b61f12160d37..984a93c38365 100644
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44 --- a/drivers/usb/serial/ftdi_sio.c
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45 +++ b/drivers/usb/serial/ftdi_sio.c
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46 @@ -1008,6 +1008,11 @@ static const struct usb_device_id id_table_combined[] = {
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47 { USB_DEVICE(ICPDAS_VID, ICPDAS_I7560U_PID) },
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48 { USB_DEVICE(ICPDAS_VID, ICPDAS_I7561U_PID) },
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49 { USB_DEVICE(ICPDAS_VID, ICPDAS_I7563U_PID) },
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50 + /* FreeCalypso USB adapters */
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51 + { USB_DEVICE(FTDI_VID, FTDI_FALCONIA_JTAG_BUF_PID),
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52 + .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
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53 + { USB_DEVICE(FTDI_VID, FTDI_FALCONIA_JTAG_UNBUF_PID),
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54 + .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
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55 { } /* Terminating entry */
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56 };
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57
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58 diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
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59 index c5d6c1e73e8e..6218f9c45016 100644
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60 --- a/drivers/usb/serial/ftdi_sio_ids.h
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61 +++ b/drivers/usb/serial/ftdi_sio_ids.h
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62 @@ -38,6 +38,13 @@
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63
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64 #define FTDI_LUMEL_PD12_PID 0x6002
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65
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66 +/*
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67 + * Custom USB adapters made by Falconia Partners LLC
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68 + * for FreeCalypso project, ID codes allocated to Falconia by FTDI.
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69 + */
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70 +#define FTDI_FALCONIA_JTAG_BUF_PID 0x7150
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71 +#define FTDI_FALCONIA_JTAG_UNBUF_PID 0x7151
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72 +
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73 /* Cyber Cortex AV by Fabulous Silicon (http://fabuloussilicon.com) */
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74 #define CYBER_CORTEX_AV_PID 0x8698
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75
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76 --
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77 2.9.0
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78