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alistair23-linux/drivers/pinctrl/pinctrl-tb10x.c
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1 
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00

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/*
* Abilis Systems TB10x pin control driver
*
* Copyright (C) Abilis Systems 2012
*
* Author: Christian Ruppert <christian.ruppert@abilis.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/stringify.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/pinctrl/machine.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/slab.h>
#include "pinctrl-utils.h"
#define TB10X_PORT1 (0)
#define TB10X_PORT2 (16)
#define TB10X_PORT3 (32)
#define TB10X_PORT4 (48)
#define TB10X_PORT5 (128)
#define TB10X_PORT6 (64)
#define TB10X_PORT7 (80)
#define TB10X_PORT8 (96)
#define TB10X_PORT9 (112)
#define TB10X_GPIOS (256)
#define PCFG_PORT_BITWIDTH (2)
#define PCFG_PORT_MASK(PORT) \
(((1 << PCFG_PORT_BITWIDTH) - 1) << (PCFG_PORT_BITWIDTH * (PORT)))
static const struct pinctrl_pin_desc tb10x_pins[] = {
/* Port 1 */
PINCTRL_PIN(TB10X_PORT1 + 0, "MICLK_S0"),
PINCTRL_PIN(TB10X_PORT1 + 1, "MISTRT_S0"),
PINCTRL_PIN(TB10X_PORT1 + 2, "MIVAL_S0"),
PINCTRL_PIN(TB10X_PORT1 + 3, "MDI_S0"),
PINCTRL_PIN(TB10X_PORT1 + 4, "GPIOA0"),
PINCTRL_PIN(TB10X_PORT1 + 5, "GPIOA1"),
PINCTRL_PIN(TB10X_PORT1 + 6, "GPIOA2"),
PINCTRL_PIN(TB10X_PORT1 + 7, "MDI_S1"),
PINCTRL_PIN(TB10X_PORT1 + 8, "MIVAL_S1"),
PINCTRL_PIN(TB10X_PORT1 + 9, "MISTRT_S1"),
PINCTRL_PIN(TB10X_PORT1 + 10, "MICLK_S1"),
/* Port 2 */
PINCTRL_PIN(TB10X_PORT2 + 0, "MICLK_S2"),
PINCTRL_PIN(TB10X_PORT2 + 1, "MISTRT_S2"),
PINCTRL_PIN(TB10X_PORT2 + 2, "MIVAL_S2"),
PINCTRL_PIN(TB10X_PORT2 + 3, "MDI_S2"),
PINCTRL_PIN(TB10X_PORT2 + 4, "GPIOC0"),
PINCTRL_PIN(TB10X_PORT2 + 5, "GPIOC1"),
PINCTRL_PIN(TB10X_PORT2 + 6, "GPIOC2"),
PINCTRL_PIN(TB10X_PORT2 + 7, "MDI_S3"),
PINCTRL_PIN(TB10X_PORT2 + 8, "MIVAL_S3"),
PINCTRL_PIN(TB10X_PORT2 + 9, "MISTRT_S3"),
PINCTRL_PIN(TB10X_PORT2 + 10, "MICLK_S3"),
/* Port 3 */
PINCTRL_PIN(TB10X_PORT3 + 0, "MICLK_S4"),
PINCTRL_PIN(TB10X_PORT3 + 1, "MISTRT_S4"),
PINCTRL_PIN(TB10X_PORT3 + 2, "MIVAL_S4"),
PINCTRL_PIN(TB10X_PORT3 + 3, "MDI_S4"),
PINCTRL_PIN(TB10X_PORT3 + 4, "GPIOE0"),
PINCTRL_PIN(TB10X_PORT3 + 5, "GPIOE1"),
PINCTRL_PIN(TB10X_PORT3 + 6, "GPIOE2"),
PINCTRL_PIN(TB10X_PORT3 + 7, "MDI_S5"),
PINCTRL_PIN(TB10X_PORT3 + 8, "MIVAL_S5"),
PINCTRL_PIN(TB10X_PORT3 + 9, "MISTRT_S5"),
PINCTRL_PIN(TB10X_PORT3 + 10, "MICLK_S5"),
/* Port 4 */
PINCTRL_PIN(TB10X_PORT4 + 0, "MICLK_S6"),
PINCTRL_PIN(TB10X_PORT4 + 1, "MISTRT_S6"),
PINCTRL_PIN(TB10X_PORT4 + 2, "MIVAL_S6"),
PINCTRL_PIN(TB10X_PORT4 + 3, "MDI_S6"),
PINCTRL_PIN(TB10X_PORT4 + 4, "GPIOG0"),
PINCTRL_PIN(TB10X_PORT4 + 5, "GPIOG1"),
PINCTRL_PIN(TB10X_PORT4 + 6, "GPIOG2"),
PINCTRL_PIN(TB10X_PORT4 + 7, "MDI_S7"),
PINCTRL_PIN(TB10X_PORT4 + 8, "MIVAL_S7"),
PINCTRL_PIN(TB10X_PORT4 + 9, "MISTRT_S7"),
PINCTRL_PIN(TB10X_PORT4 + 10, "MICLK_S7"),
/* Port 5 */
PINCTRL_PIN(TB10X_PORT5 + 0, "PC_CE1N"),
PINCTRL_PIN(TB10X_PORT5 + 1, "PC_CE2N"),
PINCTRL_PIN(TB10X_PORT5 + 2, "PC_REGN"),
PINCTRL_PIN(TB10X_PORT5 + 3, "PC_INPACKN"),
PINCTRL_PIN(TB10X_PORT5 + 4, "PC_OEN"),
PINCTRL_PIN(TB10X_PORT5 + 5, "PC_WEN"),
PINCTRL_PIN(TB10X_PORT5 + 6, "PC_IORDN"),
PINCTRL_PIN(TB10X_PORT5 + 7, "PC_IOWRN"),
PINCTRL_PIN(TB10X_PORT5 + 8, "PC_RDYIRQN"),
PINCTRL_PIN(TB10X_PORT5 + 9, "PC_WAITN"),
PINCTRL_PIN(TB10X_PORT5 + 10, "PC_A0"),
PINCTRL_PIN(TB10X_PORT5 + 11, "PC_A1"),
PINCTRL_PIN(TB10X_PORT5 + 12, "PC_A2"),
PINCTRL_PIN(TB10X_PORT5 + 13, "PC_A3"),
PINCTRL_PIN(TB10X_PORT5 + 14, "PC_A4"),
PINCTRL_PIN(TB10X_PORT5 + 15, "PC_A5"),
PINCTRL_PIN(TB10X_PORT5 + 16, "PC_A6"),
PINCTRL_PIN(TB10X_PORT5 + 17, "PC_A7"),
PINCTRL_PIN(TB10X_PORT5 + 18, "PC_A8"),
PINCTRL_PIN(TB10X_PORT5 + 19, "PC_A9"),
PINCTRL_PIN(TB10X_PORT5 + 20, "PC_A10"),
PINCTRL_PIN(TB10X_PORT5 + 21, "PC_A11"),
PINCTRL_PIN(TB10X_PORT5 + 22, "PC_A12"),
PINCTRL_PIN(TB10X_PORT5 + 23, "PC_A13"),
PINCTRL_PIN(TB10X_PORT5 + 24, "PC_A14"),
PINCTRL_PIN(TB10X_PORT5 + 25, "PC_D0"),
PINCTRL_PIN(TB10X_PORT5 + 26, "PC_D1"),
PINCTRL_PIN(TB10X_PORT5 + 27, "PC_D2"),
PINCTRL_PIN(TB10X_PORT5 + 28, "PC_D3"),
PINCTRL_PIN(TB10X_PORT5 + 29, "PC_D4"),
PINCTRL_PIN(TB10X_PORT5 + 30, "PC_D5"),
PINCTRL_PIN(TB10X_PORT5 + 31, "PC_D6"),
PINCTRL_PIN(TB10X_PORT5 + 32, "PC_D7"),
PINCTRL_PIN(TB10X_PORT5 + 33, "PC_MOSTRT"),
PINCTRL_PIN(TB10X_PORT5 + 34, "PC_MOVAL"),
PINCTRL_PIN(TB10X_PORT5 + 35, "PC_MDO0"),
PINCTRL_PIN(TB10X_PORT5 + 36, "PC_MDO1"),
PINCTRL_PIN(TB10X_PORT5 + 37, "PC_MDO2"),
PINCTRL_PIN(TB10X_PORT5 + 38, "PC_MDO3"),
PINCTRL_PIN(TB10X_PORT5 + 39, "PC_MDO4"),
PINCTRL_PIN(TB10X_PORT5 + 40, "PC_MDO5"),
PINCTRL_PIN(TB10X_PORT5 + 41, "PC_MDO6"),
PINCTRL_PIN(TB10X_PORT5 + 42, "PC_MDO7"),
PINCTRL_PIN(TB10X_PORT5 + 43, "PC_MISTRT"),
PINCTRL_PIN(TB10X_PORT5 + 44, "PC_MIVAL"),
PINCTRL_PIN(TB10X_PORT5 + 45, "PC_MDI0"),
PINCTRL_PIN(TB10X_PORT5 + 46, "PC_MDI1"),
PINCTRL_PIN(TB10X_PORT5 + 47, "PC_MDI2"),
PINCTRL_PIN(TB10X_PORT5 + 48, "PC_MDI3"),
PINCTRL_PIN(TB10X_PORT5 + 49, "PC_MDI4"),
PINCTRL_PIN(TB10X_PORT5 + 50, "PC_MDI5"),
PINCTRL_PIN(TB10X_PORT5 + 51, "PC_MDI6"),
PINCTRL_PIN(TB10X_PORT5 + 52, "PC_MDI7"),
PINCTRL_PIN(TB10X_PORT5 + 53, "PC_MICLK"),
/* Port 6 */
PINCTRL_PIN(TB10X_PORT6 + 0, "T_MOSTRT_S0"),
PINCTRL_PIN(TB10X_PORT6 + 1, "T_MOVAL_S0"),
PINCTRL_PIN(TB10X_PORT6 + 2, "T_MDO_S0"),
PINCTRL_PIN(TB10X_PORT6 + 3, "T_MOSTRT_S1"),
PINCTRL_PIN(TB10X_PORT6 + 4, "T_MOVAL_S1"),
PINCTRL_PIN(TB10X_PORT6 + 5, "T_MDO_S1"),
PINCTRL_PIN(TB10X_PORT6 + 6, "T_MOSTRT_S2"),
PINCTRL_PIN(TB10X_PORT6 + 7, "T_MOVAL_S2"),
PINCTRL_PIN(TB10X_PORT6 + 8, "T_MDO_S2"),
PINCTRL_PIN(TB10X_PORT6 + 9, "T_MOSTRT_S3"),
/* Port 7 */
PINCTRL_PIN(TB10X_PORT7 + 0, "UART0_TXD"),
PINCTRL_PIN(TB10X_PORT7 + 1, "UART0_RXD"),
PINCTRL_PIN(TB10X_PORT7 + 2, "UART0_CTS"),
PINCTRL_PIN(TB10X_PORT7 + 3, "UART0_RTS"),
PINCTRL_PIN(TB10X_PORT7 + 4, "UART1_TXD"),
PINCTRL_PIN(TB10X_PORT7 + 5, "UART1_RXD"),
PINCTRL_PIN(TB10X_PORT7 + 6, "UART1_CTS"),
PINCTRL_PIN(TB10X_PORT7 + 7, "UART1_RTS"),
/* Port 8 */
PINCTRL_PIN(TB10X_PORT8 + 0, "SPI3_CLK"),
PINCTRL_PIN(TB10X_PORT8 + 1, "SPI3_MISO"),
PINCTRL_PIN(TB10X_PORT8 + 2, "SPI3_MOSI"),
PINCTRL_PIN(TB10X_PORT8 + 3, "SPI3_SSN"),
/* Port 9 */
PINCTRL_PIN(TB10X_PORT9 + 0, "SPI1_CLK"),
PINCTRL_PIN(TB10X_PORT9 + 1, "SPI1_MISO"),
PINCTRL_PIN(TB10X_PORT9 + 2, "SPI1_MOSI"),
PINCTRL_PIN(TB10X_PORT9 + 3, "SPI1_SSN0"),
PINCTRL_PIN(TB10X_PORT9 + 4, "SPI1_SSN1"),
/* Unmuxed GPIOs */
PINCTRL_PIN(TB10X_GPIOS + 0, "GPIOB0"),
PINCTRL_PIN(TB10X_GPIOS + 1, "GPIOB1"),
PINCTRL_PIN(TB10X_GPIOS + 2, "GPIOD0"),
PINCTRL_PIN(TB10X_GPIOS + 3, "GPIOD1"),
PINCTRL_PIN(TB10X_GPIOS + 4, "GPIOF0"),
PINCTRL_PIN(TB10X_GPIOS + 5, "GPIOF1"),
PINCTRL_PIN(TB10X_GPIOS + 6, "GPIOH0"),
PINCTRL_PIN(TB10X_GPIOS + 7, "GPIOH1"),
PINCTRL_PIN(TB10X_GPIOS + 8, "GPIOI0"),
PINCTRL_PIN(TB10X_GPIOS + 9, "GPIOI1"),
PINCTRL_PIN(TB10X_GPIOS + 10, "GPIOI2"),
PINCTRL_PIN(TB10X_GPIOS + 11, "GPIOI3"),
PINCTRL_PIN(TB10X_GPIOS + 12, "GPIOI4"),
PINCTRL_PIN(TB10X_GPIOS + 13, "GPIOI5"),
PINCTRL_PIN(TB10X_GPIOS + 14, "GPIOI6"),
PINCTRL_PIN(TB10X_GPIOS + 15, "GPIOI7"),
PINCTRL_PIN(TB10X_GPIOS + 16, "GPIOI8"),
PINCTRL_PIN(TB10X_GPIOS + 17, "GPIOI9"),
PINCTRL_PIN(TB10X_GPIOS + 18, "GPIOI10"),
PINCTRL_PIN(TB10X_GPIOS + 19, "GPIOI11"),
PINCTRL_PIN(TB10X_GPIOS + 20, "GPION0"),
PINCTRL_PIN(TB10X_GPIOS + 21, "GPION1"),
PINCTRL_PIN(TB10X_GPIOS + 22, "GPION2"),
PINCTRL_PIN(TB10X_GPIOS + 23, "GPION3"),
#define MAX_PIN (TB10X_GPIOS + 24)
PINCTRL_PIN(MAX_PIN, "GPION4"),
};
/* Port 1 */
static const unsigned mis0_pins[] = { TB10X_PORT1 + 0, TB10X_PORT1 + 1,
TB10X_PORT1 + 2, TB10X_PORT1 + 3};
static const unsigned gpioa_pins[] = { TB10X_PORT1 + 4, TB10X_PORT1 + 5,
TB10X_PORT1 + 6};
static const unsigned mis1_pins[] = { TB10X_PORT1 + 7, TB10X_PORT1 + 8,
TB10X_PORT1 + 9, TB10X_PORT1 + 10};
static const unsigned mip1_pins[] = { TB10X_PORT1 + 0, TB10X_PORT1 + 1,
TB10X_PORT1 + 2, TB10X_PORT1 + 3,
TB10X_PORT1 + 4, TB10X_PORT1 + 5,
TB10X_PORT1 + 6, TB10X_PORT1 + 7,
TB10X_PORT1 + 8, TB10X_PORT1 + 9,
TB10X_PORT1 + 10};
/* Port 2 */
static const unsigned mis2_pins[] = { TB10X_PORT2 + 0, TB10X_PORT2 + 1,
TB10X_PORT2 + 2, TB10X_PORT2 + 3};
static const unsigned gpioc_pins[] = { TB10X_PORT2 + 4, TB10X_PORT2 + 5,
TB10X_PORT2 + 6};
static const unsigned mis3_pins[] = { TB10X_PORT2 + 7, TB10X_PORT2 + 8,
TB10X_PORT2 + 9, TB10X_PORT2 + 10};
static const unsigned mip3_pins[] = { TB10X_PORT2 + 0, TB10X_PORT2 + 1,
TB10X_PORT2 + 2, TB10X_PORT2 + 3,
TB10X_PORT2 + 4, TB10X_PORT2 + 5,
TB10X_PORT2 + 6, TB10X_PORT2 + 7,
TB10X_PORT2 + 8, TB10X_PORT2 + 9,
TB10X_PORT2 + 10};
/* Port 3 */
static const unsigned mis4_pins[] = { TB10X_PORT3 + 0, TB10X_PORT3 + 1,
TB10X_PORT3 + 2, TB10X_PORT3 + 3};
static const unsigned gpioe_pins[] = { TB10X_PORT3 + 4, TB10X_PORT3 + 5,
TB10X_PORT3 + 6};
static const unsigned mis5_pins[] = { TB10X_PORT3 + 7, TB10X_PORT3 + 8,
TB10X_PORT3 + 9, TB10X_PORT3 + 10};
static const unsigned mip5_pins[] = { TB10X_PORT3 + 0, TB10X_PORT3 + 1,
TB10X_PORT3 + 2, TB10X_PORT3 + 3,
TB10X_PORT3 + 4, TB10X_PORT3 + 5,
TB10X_PORT3 + 6, TB10X_PORT3 + 7,
TB10X_PORT3 + 8, TB10X_PORT3 + 9,
TB10X_PORT3 + 10};
/* Port 4 */
static const unsigned mis6_pins[] = { TB10X_PORT4 + 0, TB10X_PORT4 + 1,
TB10X_PORT4 + 2, TB10X_PORT4 + 3};
static const unsigned gpiog_pins[] = { TB10X_PORT4 + 4, TB10X_PORT4 + 5,
TB10X_PORT4 + 6};
static const unsigned mis7_pins[] = { TB10X_PORT4 + 7, TB10X_PORT4 + 8,
TB10X_PORT4 + 9, TB10X_PORT4 + 10};
static const unsigned mip7_pins[] = { TB10X_PORT4 + 0, TB10X_PORT4 + 1,
TB10X_PORT4 + 2, TB10X_PORT4 + 3,
TB10X_PORT4 + 4, TB10X_PORT4 + 5,
TB10X_PORT4 + 6, TB10X_PORT4 + 7,
TB10X_PORT4 + 8, TB10X_PORT4 + 9,
TB10X_PORT4 + 10};
/* Port 6 */
static const unsigned mop_pins[] = { TB10X_PORT6 + 0, TB10X_PORT6 + 1,
TB10X_PORT6 + 2, TB10X_PORT6 + 3,
TB10X_PORT6 + 4, TB10X_PORT6 + 5,
TB10X_PORT6 + 6, TB10X_PORT6 + 7,
TB10X_PORT6 + 8, TB10X_PORT6 + 9};
static const unsigned mos0_pins[] = { TB10X_PORT6 + 0, TB10X_PORT6 + 1,
TB10X_PORT6 + 2};
static const unsigned mos1_pins[] = { TB10X_PORT6 + 3, TB10X_PORT6 + 4,
TB10X_PORT6 + 5};
static const unsigned mos2_pins[] = { TB10X_PORT6 + 6, TB10X_PORT6 + 7,
TB10X_PORT6 + 8};
static const unsigned mos3_pins[] = { TB10X_PORT6 + 9};
/* Port 7 */
static const unsigned uart0_pins[] = { TB10X_PORT7 + 0, TB10X_PORT7 + 1,
TB10X_PORT7 + 2, TB10X_PORT7 + 3};
static const unsigned uart1_pins[] = { TB10X_PORT7 + 4, TB10X_PORT7 + 5,
TB10X_PORT7 + 6, TB10X_PORT7 + 7};
static const unsigned gpiol_pins[] = { TB10X_PORT7 + 0, TB10X_PORT7 + 1,
TB10X_PORT7 + 2, TB10X_PORT7 + 3};
static const unsigned gpiom_pins[] = { TB10X_PORT7 + 4, TB10X_PORT7 + 5,
TB10X_PORT7 + 6, TB10X_PORT7 + 7};
/* Port 8 */
static const unsigned spi3_pins[] = { TB10X_PORT8 + 0, TB10X_PORT8 + 1,
TB10X_PORT8 + 2, TB10X_PORT8 + 3};
static const unsigned jtag_pins[] = { TB10X_PORT8 + 0, TB10X_PORT8 + 1,
TB10X_PORT8 + 2, TB10X_PORT8 + 3};
/* Port 9 */
static const unsigned spi1_pins[] = { TB10X_PORT9 + 0, TB10X_PORT9 + 1,
TB10X_PORT9 + 2, TB10X_PORT9 + 3,
TB10X_PORT9 + 4};
static const unsigned gpion_pins[] = { TB10X_PORT9 + 0, TB10X_PORT9 + 1,
TB10X_PORT9 + 2, TB10X_PORT9 + 3,
TB10X_PORT9 + 4};
/* Port 5 */
static const unsigned gpioj_pins[] = { TB10X_PORT5 + 0, TB10X_PORT5 + 1,
TB10X_PORT5 + 2, TB10X_PORT5 + 3,
TB10X_PORT5 + 4, TB10X_PORT5 + 5,
TB10X_PORT5 + 6, TB10X_PORT5 + 7,
TB10X_PORT5 + 8, TB10X_PORT5 + 9,
TB10X_PORT5 + 10, TB10X_PORT5 + 11,
TB10X_PORT5 + 12, TB10X_PORT5 + 13,
TB10X_PORT5 + 14, TB10X_PORT5 + 15,
TB10X_PORT5 + 16, TB10X_PORT5 + 17,
TB10X_PORT5 + 18, TB10X_PORT5 + 19,
TB10X_PORT5 + 20, TB10X_PORT5 + 21,
TB10X_PORT5 + 22, TB10X_PORT5 + 23,
TB10X_PORT5 + 24, TB10X_PORT5 + 25,
TB10X_PORT5 + 26, TB10X_PORT5 + 27,
TB10X_PORT5 + 28, TB10X_PORT5 + 29,
TB10X_PORT5 + 30, TB10X_PORT5 + 31};
static const unsigned gpiok_pins[] = { TB10X_PORT5 + 32, TB10X_PORT5 + 33,
TB10X_PORT5 + 34, TB10X_PORT5 + 35,
TB10X_PORT5 + 36, TB10X_PORT5 + 37,
TB10X_PORT5 + 38, TB10X_PORT5 + 39,
TB10X_PORT5 + 40, TB10X_PORT5 + 41,
TB10X_PORT5 + 42, TB10X_PORT5 + 43,
TB10X_PORT5 + 44, TB10X_PORT5 + 45,
TB10X_PORT5 + 46, TB10X_PORT5 + 47,
TB10X_PORT5 + 48, TB10X_PORT5 + 49,
TB10X_PORT5 + 50, TB10X_PORT5 + 51,
TB10X_PORT5 + 52, TB10X_PORT5 + 53};
static const unsigned ciplus_pins[] = { TB10X_PORT5 + 0, TB10X_PORT5 + 1,
TB10X_PORT5 + 2, TB10X_PORT5 + 3,
TB10X_PORT5 + 4, TB10X_PORT5 + 5,
TB10X_PORT5 + 6, TB10X_PORT5 + 7,
TB10X_PORT5 + 8, TB10X_PORT5 + 9,
TB10X_PORT5 + 10, TB10X_PORT5 + 11,
TB10X_PORT5 + 12, TB10X_PORT5 + 13,
TB10X_PORT5 + 14, TB10X_PORT5 + 15,
TB10X_PORT5 + 16, TB10X_PORT5 + 17,
TB10X_PORT5 + 18, TB10X_PORT5 + 19,
TB10X_PORT5 + 20, TB10X_PORT5 + 21,
TB10X_PORT5 + 22, TB10X_PORT5 + 23,
TB10X_PORT5 + 24, TB10X_PORT5 + 25,
TB10X_PORT5 + 26, TB10X_PORT5 + 27,
TB10X_PORT5 + 28, TB10X_PORT5 + 29,
TB10X_PORT5 + 30, TB10X_PORT5 + 31,
TB10X_PORT5 + 32, TB10X_PORT5 + 33,
TB10X_PORT5 + 34, TB10X_PORT5 + 35,
TB10X_PORT5 + 36, TB10X_PORT5 + 37,
TB10X_PORT5 + 38, TB10X_PORT5 + 39,
TB10X_PORT5 + 40, TB10X_PORT5 + 41,
TB10X_PORT5 + 42, TB10X_PORT5 + 43,
TB10X_PORT5 + 44, TB10X_PORT5 + 45,
TB10X_PORT5 + 46, TB10X_PORT5 + 47,
TB10X_PORT5 + 48, TB10X_PORT5 + 49,
TB10X_PORT5 + 50, TB10X_PORT5 + 51,
TB10X_PORT5 + 52, TB10X_PORT5 + 53};
static const unsigned mcard_pins[] = { TB10X_PORT5 + 3, TB10X_PORT5 + 10,
TB10X_PORT5 + 11, TB10X_PORT5 + 12,
TB10X_PORT5 + 22, TB10X_PORT5 + 23,
TB10X_PORT5 + 33, TB10X_PORT5 + 35,
TB10X_PORT5 + 36, TB10X_PORT5 + 37,
TB10X_PORT5 + 38, TB10X_PORT5 + 39,
TB10X_PORT5 + 40, TB10X_PORT5 + 41,
TB10X_PORT5 + 42, TB10X_PORT5 + 43,
TB10X_PORT5 + 45, TB10X_PORT5 + 46,
TB10X_PORT5 + 47, TB10X_PORT5 + 48,
TB10X_PORT5 + 49, TB10X_PORT5 + 50,
TB10X_PORT5 + 51, TB10X_PORT5 + 52,
TB10X_PORT5 + 53};
static const unsigned stc0_pins[] = { TB10X_PORT5 + 34, TB10X_PORT5 + 35,
TB10X_PORT5 + 36, TB10X_PORT5 + 37,
TB10X_PORT5 + 38, TB10X_PORT5 + 39,
TB10X_PORT5 + 40};
static const unsigned stc1_pins[] = { TB10X_PORT5 + 25, TB10X_PORT5 + 26,
TB10X_PORT5 + 27, TB10X_PORT5 + 28,
TB10X_PORT5 + 29, TB10X_PORT5 + 30,
TB10X_PORT5 + 44};
/* Unmuxed GPIOs */
static const unsigned gpiob_pins[] = { TB10X_GPIOS + 0, TB10X_GPIOS + 1};
static const unsigned gpiod_pins[] = { TB10X_GPIOS + 2, TB10X_GPIOS + 3};
static const unsigned gpiof_pins[] = { TB10X_GPIOS + 4, TB10X_GPIOS + 5};
static const unsigned gpioh_pins[] = { TB10X_GPIOS + 6, TB10X_GPIOS + 7};
static const unsigned gpioi_pins[] = { TB10X_GPIOS + 8, TB10X_GPIOS + 9,
TB10X_GPIOS + 10, TB10X_GPIOS + 11,
TB10X_GPIOS + 12, TB10X_GPIOS + 13,
TB10X_GPIOS + 14, TB10X_GPIOS + 15,
TB10X_GPIOS + 16, TB10X_GPIOS + 17,
TB10X_GPIOS + 18, TB10X_GPIOS + 19};
struct tb10x_pinfuncgrp {
const char *name;
const unsigned int *pins;
const unsigned int pincnt;
const int port;
const unsigned int mode;
const int isgpio;
};
#define DEFPINFUNCGRP(NAME, PORT, MODE, ISGPIO) { \
.name = __stringify(NAME), \
.pins = NAME##_pins, .pincnt = ARRAY_SIZE(NAME##_pins), \
.port = (PORT), .mode = (MODE), \
.isgpio = (ISGPIO), \
}
static const struct tb10x_pinfuncgrp tb10x_pingroups[] = {
DEFPINFUNCGRP(mis0, 0, 0, 0),
DEFPINFUNCGRP(gpioa, 0, 0, 1),
DEFPINFUNCGRP(mis1, 0, 0, 0),
DEFPINFUNCGRP(mip1, 0, 1, 0),
DEFPINFUNCGRP(mis2, 1, 0, 0),
DEFPINFUNCGRP(gpioc, 1, 0, 1),
DEFPINFUNCGRP(mis3, 1, 0, 0),
DEFPINFUNCGRP(mip3, 1, 1, 0),
DEFPINFUNCGRP(mis4, 2, 0, 0),
DEFPINFUNCGRP(gpioe, 2, 0, 1),
DEFPINFUNCGRP(mis5, 2, 0, 0),
DEFPINFUNCGRP(mip5, 2, 1, 0),
DEFPINFUNCGRP(mis6, 3, 0, 0),
DEFPINFUNCGRP(gpiog, 3, 0, 1),
DEFPINFUNCGRP(mis7, 3, 0, 0),
DEFPINFUNCGRP(mip7, 3, 1, 0),
DEFPINFUNCGRP(gpioj, 4, 0, 1),
DEFPINFUNCGRP(gpiok, 4, 0, 1),
DEFPINFUNCGRP(ciplus, 4, 1, 0),
DEFPINFUNCGRP(mcard, 4, 2, 0),
DEFPINFUNCGRP(stc0, 4, 3, 0),
DEFPINFUNCGRP(stc1, 4, 3, 0),
DEFPINFUNCGRP(mop, 5, 0, 0),
DEFPINFUNCGRP(mos0, 5, 1, 0),
DEFPINFUNCGRP(mos1, 5, 1, 0),
DEFPINFUNCGRP(mos2, 5, 1, 0),
DEFPINFUNCGRP(mos3, 5, 1, 0),
DEFPINFUNCGRP(uart0, 6, 0, 0),
DEFPINFUNCGRP(uart1, 6, 0, 0),
DEFPINFUNCGRP(gpiol, 6, 1, 1),
DEFPINFUNCGRP(gpiom, 6, 1, 1),
DEFPINFUNCGRP(spi3, 7, 0, 0),
DEFPINFUNCGRP(jtag, 7, 1, 0),
DEFPINFUNCGRP(spi1, 8, 0, 0),
DEFPINFUNCGRP(gpion, 8, 1, 1),
DEFPINFUNCGRP(gpiob, -1, 0, 1),
DEFPINFUNCGRP(gpiod, -1, 0, 1),
DEFPINFUNCGRP(gpiof, -1, 0, 1),
DEFPINFUNCGRP(gpioh, -1, 0, 1),
DEFPINFUNCGRP(gpioi, -1, 0, 1),
};
#undef DEFPINFUNCGRP
struct tb10x_of_pinfunc {
const char *name;
const char *group;
};
#define TB10X_PORTS (9)
/**
* struct tb10x_port - state of an I/O port
* @mode: Node this port is currently in.
* @count: Number of enabled functions which require this port to be
* configured in @mode.
*/
struct tb10x_port {
unsigned int mode;
unsigned int count;
};
/**
* struct tb10x_pinctrl - TB10x pin controller internal state
* @pctl: pointer to the pinctrl_dev structure of this pin controller.
* @base: register set base address.
* @pingroups: pointer to an array of the pin groups this driver manages.
* @pinfuncgrpcnt: number of pingroups in @pingroups.
* @pinfuncs: pointer to an array of pin functions this driver manages.
* @pinfuncnt: number of pin functions in @pinfuncs.
* @mutex: mutex for exclusive access to a pin controller's state.
* @ports: current state of each port.
* @gpios: Indicates if a given pin is currently used as GPIO (1) or not (0).
*/
struct tb10x_pinctrl {
struct pinctrl_dev *pctl;
void *base;
const struct tb10x_pinfuncgrp *pingroups;
unsigned int pinfuncgrpcnt;
struct tb10x_of_pinfunc *pinfuncs;
unsigned int pinfuncnt;
struct mutex mutex;
struct tb10x_port ports[TB10X_PORTS];
DECLARE_BITMAP(gpios, MAX_PIN + 1);
};
static inline void tb10x_pinctrl_set_config(struct tb10x_pinctrl *state,
unsigned int port, unsigned int mode)
{
u32 pcfg;
if (state->ports[port].count)
return;
state->ports[port].mode = mode;
pcfg = ioread32(state->base) & ~(PCFG_PORT_MASK(port));
pcfg |= (mode << (PCFG_PORT_BITWIDTH * port)) & PCFG_PORT_MASK(port);
iowrite32(pcfg, state->base);
}
static inline unsigned int tb10x_pinctrl_get_config(
struct tb10x_pinctrl *state,
unsigned int port)
{
return (ioread32(state->base) & PCFG_PORT_MASK(port))
>> (PCFG_PORT_BITWIDTH * port);
}
static int tb10x_get_groups_count(struct pinctrl_dev *pctl)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
return state->pinfuncgrpcnt;
}
static const char *tb10x_get_group_name(struct pinctrl_dev *pctl, unsigned n)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
return state->pingroups[n].name;
}
static int tb10x_get_group_pins(struct pinctrl_dev *pctl, unsigned n,
unsigned const **pins,
unsigned * const num_pins)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
*pins = state->pingroups[n].pins;
*num_pins = state->pingroups[n].pincnt;
return 0;
}
static int tb10x_dt_node_to_map(struct pinctrl_dev *pctl,
struct device_node *np_config,
struct pinctrl_map **map, unsigned *num_maps)
{
const char *string;
unsigned reserved_maps = 0;
int ret = 0;
if (of_property_read_string(np_config, "abilis,function", &string)) {
pr_err("%s: No abilis,function property in device tree.\n",
np_config->full_name);
return -EINVAL;
}
*map = NULL;
*num_maps = 0;
ret = pinctrl_utils_reserve_map(pctl, map, &reserved_maps,
num_maps, 1);
if (ret)
goto out;
ret = pinctrl_utils_add_map_mux(pctl, map, &reserved_maps,
num_maps, string, np_config->name);
out:
return ret;
}
static struct pinctrl_ops tb10x_pinctrl_ops = {
.get_groups_count = tb10x_get_groups_count,
.get_group_name = tb10x_get_group_name,
.get_group_pins = tb10x_get_group_pins,
.dt_node_to_map = tb10x_dt_node_to_map,
.dt_free_map = pinctrl_utils_dt_free_map,
};
static int tb10x_get_functions_count(struct pinctrl_dev *pctl)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
return state->pinfuncnt;
}
static const char *tb10x_get_function_name(struct pinctrl_dev *pctl,
unsigned n)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
return state->pinfuncs[n].name;
}
static int tb10x_get_function_groups(struct pinctrl_dev *pctl,
unsigned n, const char * const **groups,
unsigned * const num_groups)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
*groups = &state->pinfuncs[n].group;
*num_groups = 1;
return 0;
}
static int tb10x_gpio_request_enable(struct pinctrl_dev *pctl,
struct pinctrl_gpio_range *range,
unsigned pin)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
int muxport = -1;
int muxmode = -1;
int i;
mutex_lock(&state->mutex);
/*
* Figure out to which port the requested GPIO belongs and how to
* configure that port.
* This loop also checks for pin conflicts between GPIOs and other
* functions.
*/
for (i = 0; i < state->pinfuncgrpcnt; i++) {
const struct tb10x_pinfuncgrp *pfg = &state->pingroups[i];
unsigned int mode = pfg->mode;
int j, port = pfg->port;
/*
* Skip pin groups which are always mapped and don't need
* to be configured.
*/
if (port < 0)
continue;
for (j = 0; j < pfg->pincnt; j++) {
if (pin == pfg->pins[j]) {
if (pfg->isgpio) {
/*
* Remember the GPIO-only setting of
* the port this pin belongs to.
*/
muxport = port;
muxmode = mode;
} else if (state->ports[port].count
&& (state->ports[port].mode == mode)) {
/*
* Error: The requested pin is already
* used for something else.
*/
mutex_unlock(&state->mutex);
return -EBUSY;
}
break;
}
}
}
/*
* If we haven't returned an error at this point, the GPIO pin is not
* used by another function and the GPIO request can be granted:
* Register pin as being used as GPIO so we don't allocate it to
* another function later.
*/
set_bit(pin, state->gpios);
/*
* Potential conflicts between GPIOs and pin functions were caught
* earlier in this function and tb10x_pinctrl_set_config will do the
* Right Thing, either configure the port in GPIO only mode or leave
* another mode compatible with this GPIO request untouched.
*/
if (muxport >= 0)
tb10x_pinctrl_set_config(state, muxport, muxmode);
mutex_unlock(&state->mutex);
return 0;
}
static void tb10x_gpio_disable_free(struct pinctrl_dev *pctl,
struct pinctrl_gpio_range *range,
unsigned pin)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
mutex_lock(&state->mutex);
clear_bit(pin, state->gpios);
mutex_unlock(&state->mutex);
}
static int tb10x_pctl_set_mux(struct pinctrl_dev *pctl,
unsigned func_selector, unsigned group_selector)
{
struct tb10x_pinctrl *state = pinctrl_dev_get_drvdata(pctl);
const struct tb10x_pinfuncgrp *grp = &state->pingroups[group_selector];
int i;
if (grp->port < 0)
return 0;
mutex_lock(&state->mutex);
/*
* Check if the requested function is compatible with previously
* requested functions.
*/
if (state->ports[grp->port].count
&& (state->ports[grp->port].mode != grp->mode)) {
mutex_unlock(&state->mutex);
return -EBUSY;
}
/*
* Check if the requested function is compatible with previously
* requested GPIOs.
*/
for (i = 0; i < grp->pincnt; i++)
if (test_bit(grp->pins[i], state->gpios)) {
mutex_unlock(&state->mutex);
return -EBUSY;
}
tb10x_pinctrl_set_config(state, grp->port, grp->mode);
state->ports[grp->port].count++;
mutex_unlock(&state->mutex);
return 0;
}
static struct pinmux_ops tb10x_pinmux_ops = {
.get_functions_count = tb10x_get_functions_count,
.get_function_name = tb10x_get_function_name,
.get_function_groups = tb10x_get_function_groups,
.gpio_request_enable = tb10x_gpio_request_enable,
.gpio_disable_free = tb10x_gpio_disable_free,
.set_mux = tb10x_pctl_set_mux,
};
static struct pinctrl_desc tb10x_pindesc = {
.name = "TB10x",
.pins = tb10x_pins,
.npins = ARRAY_SIZE(tb10x_pins),
.owner = THIS_MODULE,
.pctlops = &tb10x_pinctrl_ops,
.pmxops = &tb10x_pinmux_ops,
};
static int tb10x_pinctrl_probe(struct platform_device *pdev)
{
int ret = -EINVAL;
struct resource *mem;
struct device *dev = &pdev->dev;
struct device_node *of_node = dev->of_node;
struct device_node *child;
struct tb10x_pinctrl *state;
int i;
if (!of_node) {
dev_err(dev, "No device tree node found.\n");
return -EINVAL;
}
state = devm_kzalloc(dev, sizeof(struct tb10x_pinctrl) +
of_get_child_count(of_node)
* sizeof(struct tb10x_of_pinfunc),
GFP_KERNEL);
if (!state)
return -ENOMEM;
platform_set_drvdata(pdev, state);
state->pinfuncs = (struct tb10x_of_pinfunc *)(state + 1);
mutex_init(&state->mutex);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
state->base = devm_ioremap_resource(dev, mem);
if (IS_ERR(state->base)) {
ret = PTR_ERR(state->base);
goto fail;
}
state->pingroups = tb10x_pingroups;
state->pinfuncgrpcnt = ARRAY_SIZE(tb10x_pingroups);
for (i = 0; i < TB10X_PORTS; i++)
state->ports[i].mode = tb10x_pinctrl_get_config(state, i);
for_each_child_of_node(of_node, child) {
const char *name;
if (!of_property_read_string(child, "abilis,function",
&name)) {
state->pinfuncs[state->pinfuncnt].name = child->name;
state->pinfuncs[state->pinfuncnt].group = name;
state->pinfuncnt++;
}
}
state->pctl = pinctrl_register(&tb10x_pindesc, dev, state);
if (!state->pctl) {
dev_err(dev, "could not register TB10x pin driver\n");
ret = -EINVAL;
goto fail;
}
return 0;
fail:
mutex_destroy(&state->mutex);
return ret;
}
static int tb10x_pinctrl_remove(struct platform_device *pdev)
{
struct tb10x_pinctrl *state = platform_get_drvdata(pdev);
pinctrl_unregister(state->pctl);
mutex_destroy(&state->mutex);
return 0;
}
static const struct of_device_id tb10x_pinctrl_dt_ids[] = {
{ .compatible = "abilis,tb10x-iomux" },
{ }
};
MODULE_DEVICE_TABLE(of, tb10x_pinctrl_dt_ids);
static struct platform_driver tb10x_pinctrl_pdrv = {
.probe = tb10x_pinctrl_probe,
.remove = tb10x_pinctrl_remove,
.driver = {
.name = "tb10x_pinctrl",
.of_match_table = of_match_ptr(tb10x_pinctrl_dt_ids),
}
};
module_platform_driver(tb10x_pinctrl_pdrv);
MODULE_AUTHOR("Christian Ruppert <christian.ruppert@abilis.com>");
MODULE_LICENSE("GPL");
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