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annotate 4.9.240/0002-USB-serial-ftdi_sio-pass-port-to-quirk-port_probe-fu.patch @ 14:2a6b7ed98d21 default tip

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Mainline-tracking: good through 6.8
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 24 Mar 2024 23:07:59 +0000
parents 713fe1e8df41
children
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713fe1e8df41 initial import of formal patches from freecalypso-hwlab repo
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1 From 214b1d2da22e380b05ecf6e546962ca867e3a60e 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: Fri, 2 Oct 2020 17:38:56 +0000
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4 Subject: [PATCH 2/3] USB: serial: ftdi_sio: pass port to quirk port_probe
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5 functions
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6
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7 The original code passed only the pointer to the ftdi_private struct
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8 to quirk port_probe functions. However, some quirks may need to be
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9 applied conditionally only to some channels of a multichannel FT2232x
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10 or FT4232H device, and if a given quirk's port_probe function needs
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11 to figure out which channel of a multichannel device is currently
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12 being considered, it needs access to the port pointer passed to the
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13 ftdi_sio_port_probe() function, so it can traverse USB data structures
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14 from there.
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15
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16 Signed-off-by: Mychaela N. Falconia <falcon@freecalypso.org>
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17 ---
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18 drivers/usb/serial/ftdi_sio.c | 20 ++++++++++++--------
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19 1 file changed, 12 insertions(+), 8 deletions(-)
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20
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21 diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
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22 index c9f979063af1..878ab4e5625c 100644
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23 --- a/drivers/usb/serial/ftdi_sio.c
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24 +++ b/drivers/usb/serial/ftdi_sio.c
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25 @@ -83,15 +83,15 @@ struct ftdi_private {
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26 struct ftdi_sio_quirk {
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27 int (*probe)(struct usb_serial *);
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28 /* Special settings for probed ports. */
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29 - void (*port_probe)(struct ftdi_private *);
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30 + void (*port_probe)(struct usb_serial_port *);
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31 };
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32
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33 static int ftdi_jtag_probe(struct usb_serial *serial);
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34 static int ftdi_NDI_device_setup(struct usb_serial *serial);
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35 static int ftdi_stmclite_probe(struct usb_serial *serial);
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36 static int ftdi_8u2232c_probe(struct usb_serial *serial);
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37 -static void ftdi_USB_UIRT_setup(struct ftdi_private *priv);
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38 -static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
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39 +static void ftdi_USB_UIRT_setup(struct usb_serial_port *port);
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40 +static void ftdi_HE_TIRA1_setup(struct usb_serial_port *port);
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41
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42 static const struct ftdi_sio_quirk ftdi_jtag_quirk = {
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43 .probe = ftdi_jtag_probe,
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44 @@ -1833,11 +1833,11 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
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45
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46 mutex_init(&priv->cfg_lock);
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47
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48 - if (quirk && quirk->port_probe)
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49 - quirk->port_probe(priv);
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50 -
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51 usb_set_serial_port_data(port, priv);
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52
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53 + if (quirk && quirk->port_probe)
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54 + quirk->port_probe(port);
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55 +
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56 ftdi_determine_type(port);
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57 ftdi_set_max_packet_size(port);
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58 if (read_latency_timer(port) < 0)
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59 @@ -1850,8 +1850,10 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
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60 /* Setup for the USB-UIRT device, which requires hardwired
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61 * baudrate (38400 gets mapped to 312500) */
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62 /* Called from usbserial:serial_probe */
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63 -static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
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64 +static void ftdi_USB_UIRT_setup(struct usb_serial_port *port)
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65 {
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66 + struct ftdi_private *priv = usb_get_serial_port_data(port);
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67 +
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68 priv->flags |= ASYNC_SPD_CUST;
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69 priv->custom_divisor = 77;
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70 priv->force_baud = 38400;
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71 @@ -1860,8 +1862,10 @@ static void ftdi_USB_UIRT_setup(struct ftdi_private *priv)
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72 /* Setup for the HE-TIRA1 device, which requires hardwired
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73 * baudrate (38400 gets mapped to 100000) and RTS-CTS enabled. */
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74
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75 -static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
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76 +static void ftdi_HE_TIRA1_setup(struct usb_serial_port *port)
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77 {
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78 + struct ftdi_private *priv = usb_get_serial_port_data(port);
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79 +
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80 priv->flags |= ASYNC_SPD_CUST;
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81 priv->custom_divisor = 240;
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82 priv->force_baud = 38400;
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83 --
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84 2.9.0
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85