docs: driver-api: Move bt8xxgpio to the gpio directory

Let's declutter Documentation/driver-api a bit.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20191004164059.10397-1-j.neuschaefer@gmx.net
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/driver-api/bt8xxgpio.rst b/Documentation/driver-api/bt8xxgpio.rst
deleted file mode 100644 (file)
index a845feb..0000000
--- a/Documentation/driver-api/bt8xxgpio.rst
+++ /dev/null
@@ -1,62 +0,0 @@
-===================================================================
-A driver for a selfmade cheap BT8xx based PCI GPIO-card (bt8xxgpio)
-===================================================================
-
-For advanced documentation, see http://www.bu3sch.de/btgpio.php
-
-A generic digital 24-port PCI GPIO card can be built out of an ordinary
-Brooktree bt848, bt849, bt878 or bt879 based analog TV tuner card. The
-Brooktree chip is used in old analog Hauppauge WinTV PCI cards. You can easily
-find them used for low prices on the net.
-
-The bt8xx chip does have 24 digital GPIO ports.
-These ports are accessible via 24 pins on the SMD chip package.
-
-
-How to physically access the GPIO pins
-======================================
-
-The are several ways to access these pins. One might unsolder the whole chip
-and put it on a custom PCI board, or one might only unsolder each individual
-GPIO pin and solder that to some tiny wire. As the chip package really is tiny
-there are some advanced soldering skills needed in any case.
-
-The physical pinouts are drawn in the following ASCII art.
-The GPIO pins are marked with G00-G23::
-
-                                           G G G G G G G G G G G G     G G G G G G
-                                           0 0 0 0 0 0 0 0 0 0 1 1     1 1 1 1 1 1
-                                           0 1 2 3 4 5 6 7 8 9 0 1     2 3 4 5 6 7
-           | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
-           ---------------------------------------------------------------------------
-         --|                               ^                                     ^   |--
-         --|                               pin 86                           pin 67   |--
-         --|                                                                         |--
-         --|                                                               pin 61 >  |-- G18
-         --|                                                                         |-- G19
-         --|                                                                         |-- G20
-         --|                                                                         |-- G21
-         --|                                                                         |-- G22
-         --|                                                               pin 56 >  |-- G23
-         --|                                                                         |--
-         --|                           Brooktree 878/879                             |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|                                                                         |--
-         --|   O                                                                     |--
-         --|                                                                         |--
-           ---------------------------------------------------------------------------
-           | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
-           ^
-           This is pin 1
-

diff --git a/Documentation/driver-api/gpio/bt8xxgpio.rst b/Documentation/driver-api/gpio/bt8xxgpio.rst
new file mode 100644 (file)
index 0000000..a845feb
--- /dev/null
+++ b/Documentation/driver-api/gpio/bt8xxgpio.rst
@@ -0,0 +1,62 @@
+===================================================================
+A driver for a selfmade cheap BT8xx based PCI GPIO-card (bt8xxgpio)
+===================================================================
+
+For advanced documentation, see http://www.bu3sch.de/btgpio.php
+
+A generic digital 24-port PCI GPIO card can be built out of an ordinary
+Brooktree bt848, bt849, bt878 or bt879 based analog TV tuner card. The
+Brooktree chip is used in old analog Hauppauge WinTV PCI cards. You can easily
+find them used for low prices on the net.
+
+The bt8xx chip does have 24 digital GPIO ports.
+These ports are accessible via 24 pins on the SMD chip package.
+
+
+How to physically access the GPIO pins
+======================================
+
+The are several ways to access these pins. One might unsolder the whole chip
+and put it on a custom PCI board, or one might only unsolder each individual
+GPIO pin and solder that to some tiny wire. As the chip package really is tiny
+there are some advanced soldering skills needed in any case.
+
+The physical pinouts are drawn in the following ASCII art.
+The GPIO pins are marked with G00-G23::
+
+                                           G G G G G G G G G G G G     G G G G G G
+                                           0 0 0 0 0 0 0 0 0 0 1 1     1 1 1 1 1 1
+                                           0 1 2 3 4 5 6 7 8 9 0 1     2 3 4 5 6 7
+           | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
+           ---------------------------------------------------------------------------
+         --|                               ^                                     ^   |--
+         --|                               pin 86                           pin 67   |--
+         --|                                                                         |--
+         --|                                                               pin 61 >  |-- G18
+         --|                                                                         |-- G19
+         --|                                                                         |-- G20
+         --|                                                                         |-- G21
+         --|                                                                         |-- G22
+         --|                                                               pin 56 >  |-- G23
+         --|                                                                         |--
+         --|                           Brooktree 878/879                             |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|                                                                         |--
+         --|   O                                                                     |--
+         --|                                                                         |--
+           ---------------------------------------------------------------------------
+           | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
+           ^
+           This is pin 1
+

diff --git a/Documentation/driver-api/gpio/index.rst b/Documentation/driver-api/gpio/index.rst
index c5b8467f91043e288b7d5386c8f44da056ffb2c4..5b61032aa4ea95a3b0b5bc1a8fee40e56d8811d2 100644 (file)
--- a/Documentation/driver-api/gpio/index.rst
+++ b/Documentation/driver-api/gpio/index.rst
@@ -13,6 +13,7 @@ Contents:
    board
    drivers-on-gpio
    legacy
+   bt8xxgpio
 
 Core
 ====

diff --git a/Documentation/driver-api/index.rst b/Documentation/driver-api/index.rst
index 38e638abe3ebcee44d990bb74da7089a6421b1fc..2b3b6949381eda7ea906ce24c1f404eaaef81af7 100644 (file)
--- a/Documentation/driver-api/index.rst
+++ b/Documentation/driver-api/index.rst
@@ -69,7 +69,6 @@ available subsections can be seen below.
    fpga/index
    acpi/index
    backlight/lp855x-driver.rst
-   bt8xxgpio
    connector
    console
    dcdbas

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 7365cf150ae57f2bcd2b1f13f0fe82d6d06562ae..088a8a0f8add52d525a9e4f4e55e35b3751095e7 100644 (file)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1329,7 +1329,7 @@ config GPIO_BT8XX
          The card needs to be physically altered for using it as a
          GPIO card. For more information on how to build a GPIO card
          from a BT8xx TV card, see the documentation file at
-         Documentation/driver-api/bt8xxgpio.rst
+         Documentation/driver-api/gpio/bt8xxgpio.rst
 
          If unsure, say N.