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Subject[PATCH 1/2] pinmux: Add TB10x pinmux driver
Date
The pinmux driver of the Abilis Systems TB10x platform based on ARC700 CPUs.
Used to control the pinmux and is a prerequisite for the GPIO driver.

Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com>
---
.../bindings/pinctrl/abilis,tb10x-iomux.txt | 92 +++
drivers/pinctrl/Kconfig | 4 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-tb10x.c | 794 ++++++++++++++++++++
include/linux/pinctrl/pinctrl-tb10x.h | 46 ++
5 files changed, 937 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt
create mode 100644 drivers/pinctrl/pinctrl-tb10x.c
create mode 100644 include/linux/pinctrl/pinctrl-tb10x.h

diff --git a/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt b/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt
new file mode 100644
index 0000000..9979169
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt
@@ -0,0 +1,92 @@
+Abilis Systems TB10x pin controller
+===================================
+
+Required properties
+-------------------
+
+- #address-cells: should be <1>.
+- #size-cells: should be <1>;
+- compatible: should be "abilis,tb10x-iomux";
+- reg: should contain the physical address and size of the pin controller's
+ register range.
+
+
+Port definitions
+----------------
+
+Ports are defined (and referenced) by sub-nodes of the pin controller. Every
+sub-node defines exactly one port (i.e. a set of pins). Ports are defined by
+their names in the pin controller driver.
+
+Required port definition subnode properties:
+ - pingrp: should be set to the name of the port's pin group.
+
+The following pin groups are available:
+ - GPIO ports: gpioa_pins, gpiob_pins, gpioc_pins, gpiod_pins, gpioe_pins,
+ gpiof_pins, gpiog_pins, gpioh_pins, gpioi_pins, gpioj_pins,
+ gpiok_pins, gpiol_pins, gpiom_pins, gpion_pins
+ - Serial TS input ports: mis0_pins, mis1_pins, mis2_pins, mis3_pins,
+ mis4_pins, mis5_pins, mis6_pins, mis7_pins
+ - Parallel TS input ports: mip1_pins, mip3_pins, mip5_pins, mip7_pins
+ - Serial TS output ports: mos0_pins, mos1_pins, mos2_pins, mos3_pins
+ - Parallel TS output port: mop_pins
+ - CI+ port: ciplus_pins
+ - CableCard (Mcard) port: mcard_pins
+ - Smart card ports: stc0_pins, stc1_pins
+ - UART ports: uart0_pins, uart1_pins
+ - SPI ports: spi1_pins, spi3_pins
+ - JTAG: jtag_pins
+
+All other ports of the chip are not multiplexed and thus not managed by this
+driver.
+
+
+Pinmux driver control
+---------------------
+
+In case a driver requires a port to be mapped, the corresponding node should
+be compatible with "abilis,simple-pinctrl" and define a pinctrl state named
+"abilis,simple-default" pointing to the port's respective node inside the pin
+controller. Drivers managing pin controller states internally can be
+configured normally as described in the pinctrl-bindings.txt.
+
+The pinmux driver is connected to the TB10x GPIO driver in a way that a GPIO
+node managing a GPIO port can point to the respective pinmux subnode using
+the gpio-pins property
+
+
+Example
+-------
+
+iomux: iomux@FF10601c {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "abilis,tb10x-iomux";
+ reg = <0xFF10601c 0x4>;
+ pctl_gpio_a: pctl-gpio-a {
+ pingrp = "gpioa_pins";
+ };
+ pctl_uart0: pctl-uart0 {
+ pingrp = "uart0_pins";
+ };
+};
+uart@FF100000 {
+ compatible = "snps,dw-apb-uart",
+ "abilis,simple-pinctrl";
+ reg = <0xFF100000 0x100>;
+ clock-frequency = <166666666>;
+ interrupts = <25 1>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ pinctrl-names = "abilis,simple-default"; /* <<<<<<<< */
+ pinctrl-0 = <&pctl_uart0>; /* <<<<<<<< */
+};
+gpioa: gpio@FF140000 {
+ compatible = "abilis,tb10x-gpio";
+ reg = <0xFF140000 0x1000>;
+ gpio-controller;
+ #gpio-cells = <1>;
+ gpio-count = <3>;
+ gpio-base = <0>;
+ gpio-pins = <&pctl_gpio_a>; /* <<<<<<<< */
+};
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 34f51d2..b5b6682 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -235,6 +235,10 @@ config PINCTRL_XWAY
depends on SOC_TYPE_XWAY
depends on PINCTRL_LANTIQ

+config PINCTRL_TB10X
+ bool
+ depends on ARC_PLAT_TB10X
+
endmenu

endif
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index f82cc5b..b68d614 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -47,6 +47,7 @@ obj-$(CONFIG_PINCTRL_EXYNOS) += pinctrl-exynos.o
obj-$(CONFIG_PINCTRL_EXYNOS5440) += pinctrl-exynos5440.o
obj-$(CONFIG_PINCTRL_XWAY) += pinctrl-xway.o
obj-$(CONFIG_PINCTRL_LANTIQ) += pinctrl-lantiq.o
+obj-$(CONFIG_PINCTRL_TB10X) += pinctrl-tb10x.o

obj-$(CONFIG_PLAT_ORION) += mvebu/
obj-$(CONFIG_ARCH_SHMOBILE) += sh-pfc/
diff --git a/drivers/pinctrl/pinctrl-tb10x.c b/drivers/pinctrl/pinctrl-tb10x.c
new file mode 100644
index 0000000..52a1299
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-tb10x.c
@@ -0,0 +1,794 @@
+/*
+ * 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 <linux/pinctrl/pinctrl-tb10x.h>
+
+#define TB10X_IOMUX_COMPATIBLE ("abilis,tb10x-iomux")
+
+static const struct pinctrl_pin_desc tb10x_pins[] = {
+ /* Port 1 */
+ PINCTRL_PIN(0 + 0, "MICLK_S0"),
+ PINCTRL_PIN(0 + 1, "MISTRT_S0"),
+ PINCTRL_PIN(0 + 2, "MIVAL_S0"),
+ PINCTRL_PIN(0 + 3, "MDI_S0"),
+ PINCTRL_PIN(0 + 4, "GPIOA0"),
+ PINCTRL_PIN(0 + 5, "GPIOA1"),
+ PINCTRL_PIN(0 + 6, "GPIOA2"),
+ PINCTRL_PIN(0 + 7, "MDI_S1"),
+ PINCTRL_PIN(0 + 8, "MIVAL_S1"),
+ PINCTRL_PIN(0 + 9, "MISTRT_S1"),
+ PINCTRL_PIN(0 + 10, "MICLK_S1"),
+ /* Port 2 */
+ PINCTRL_PIN(16 + 0, "MICLK_S2"),
+ PINCTRL_PIN(16 + 1, "MISTRT_S2"),
+ PINCTRL_PIN(16 + 2, "MIVAL_S2"),
+ PINCTRL_PIN(16 + 3, "MDI_S2"),
+ PINCTRL_PIN(16 + 4, "GPIOC0"),
+ PINCTRL_PIN(16 + 5, "GPIOC1"),
+ PINCTRL_PIN(16 + 6, "GPIOC2"),
+ PINCTRL_PIN(16 + 7, "MDI_S3"),
+ PINCTRL_PIN(16 + 8, "MIVAL_S3"),
+ PINCTRL_PIN(16 + 9, "MISTRT_S3"),
+ PINCTRL_PIN(16 + 10, "MICLK_S3"),
+ /* Port 3 */
+ PINCTRL_PIN(32 + 0, "MICLK_S4"),
+ PINCTRL_PIN(32 + 1, "MISTRT_S4"),
+ PINCTRL_PIN(32 + 2, "MIVAL_S4"),
+ PINCTRL_PIN(32 + 3, "MDI_S4"),
+ PINCTRL_PIN(32 + 4, "GPIOE0"),
+ PINCTRL_PIN(32 + 5, "GPIOE1"),
+ PINCTRL_PIN(32 + 6, "GPIOE2"),
+ PINCTRL_PIN(32 + 7, "MDI_S5"),
+ PINCTRL_PIN(32 + 8, "MIVAL_S5"),
+ PINCTRL_PIN(32 + 9, "MISTRT_S5"),
+ PINCTRL_PIN(32 + 10, "MICLK_S5"),
+ /* Port 4 */
+ PINCTRL_PIN(48 + 0, "MICLK_S6"),
+ PINCTRL_PIN(48 + 1, "MISTRT_S6"),
+ PINCTRL_PIN(48 + 2, "MIVAL_S6"),
+ PINCTRL_PIN(48 + 3, "MDI_S6"),
+ PINCTRL_PIN(48 + 4, "GPIOG0"),
+ PINCTRL_PIN(48 + 5, "GPIOG1"),
+ PINCTRL_PIN(48 + 6, "GPIOG2"),
+ PINCTRL_PIN(48 + 7, "MDI_S7"),
+ PINCTRL_PIN(48 + 8, "MIVAL_S7"),
+ PINCTRL_PIN(48 + 9, "MISTRT_S7"),
+ PINCTRL_PIN(48 + 10, "MICLK_S7"),
+ /* Port 6 */
+ PINCTRL_PIN(64 + 0, "T_MOSTRT_S0"),
+ PINCTRL_PIN(64 + 1, "T_MOVAL_S0"),
+ PINCTRL_PIN(64 + 2, "T_MDO_S0"),
+ PINCTRL_PIN(64 + 3, "T_MOSTRT_S1"),
+ PINCTRL_PIN(64 + 4, "T_MOVAL_S1"),
+ PINCTRL_PIN(64 + 5, "T_MDO_S1"),
+ PINCTRL_PIN(64 + 6, "T_MOSTRT_S2"),
+ PINCTRL_PIN(64 + 7, "T_MOVAL_S2"),
+ PINCTRL_PIN(64 + 8, "T_MDO_S2"),
+ PINCTRL_PIN(64 + 9, "T_MOSTRT_S3"),
+ /* Port 7 */
+ PINCTRL_PIN(80 + 0, "UART0_TXD"),
+ PINCTRL_PIN(80 + 1, "UART0_RXD"),
+ PINCTRL_PIN(80 + 2, "UART0_CTS"),
+ PINCTRL_PIN(80 + 3, "UART0_RTS"),
+ PINCTRL_PIN(80 + 4, "UART1_TXD"),
+ PINCTRL_PIN(80 + 5, "UART1_RXD"),
+ PINCTRL_PIN(80 + 6, "UART1_CTS"),
+ PINCTRL_PIN(80 + 7, "UART1_RTS"),
+ /* Port 8 */
+ PINCTRL_PIN(96 + 0, "SPI3_CLK"),
+ PINCTRL_PIN(96 + 1, "SPI3_MISO"),
+ PINCTRL_PIN(96 + 2, "SPI3_MOSI"),
+ PINCTRL_PIN(96 + 3, "SPI3_SSN"),
+ /* Port 9 */
+ PINCTRL_PIN(112 + 0, "SPI1_CLK"),
+ PINCTRL_PIN(112 + 1, "SPI1_MISO"),
+ PINCTRL_PIN(112 + 2, "SPI1_MOSI"),
+ PINCTRL_PIN(112 + 3, "SPI1_SSN0"),
+ PINCTRL_PIN(112 + 4, "SPI1_SSN1"),
+ /* Port 5 */
+ PINCTRL_PIN(128 + 0, "PC_CE1N"),
+ PINCTRL_PIN(128 + 1, "PC_CE2N"),
+ PINCTRL_PIN(128 + 2, "PC_REGN"),
+ PINCTRL_PIN(128 + 3, "PC_INPACKN"),
+ PINCTRL_PIN(128 + 4, "PC_OEN"),
+ PINCTRL_PIN(128 + 5, "PC_WEN"),
+ PINCTRL_PIN(128 + 6, "PC_IORDN"),
+ PINCTRL_PIN(128 + 7, "PC_IOWRN"),
+ PINCTRL_PIN(128 + 8, "PC_RDYIRQN"),
+ PINCTRL_PIN(128 + 9, "PC_WAITN"),
+ PINCTRL_PIN(128 + 10, "PC_A0"),
+ PINCTRL_PIN(128 + 11, "PC_A1"),
+ PINCTRL_PIN(128 + 12, "PC_A2"),
+ PINCTRL_PIN(128 + 13, "PC_A3"),
+ PINCTRL_PIN(128 + 14, "PC_A4"),
+ PINCTRL_PIN(128 + 15, "PC_A5"),
+ PINCTRL_PIN(128 + 16, "PC_A6"),
+ PINCTRL_PIN(128 + 17, "PC_A7"),
+ PINCTRL_PIN(128 + 18, "PC_A8"),
+ PINCTRL_PIN(128 + 19, "PC_A9"),
+ PINCTRL_PIN(128 + 20, "PC_A10"),
+ PINCTRL_PIN(128 + 21, "PC_A11"),
+ PINCTRL_PIN(128 + 22, "PC_A12"),
+ PINCTRL_PIN(128 + 23, "PC_A13"),
+ PINCTRL_PIN(128 + 24, "PC_A14"),
+ PINCTRL_PIN(128 + 25, "PC_D0"),
+ PINCTRL_PIN(128 + 26, "PC_D1"),
+ PINCTRL_PIN(128 + 27, "PC_D2"),
+ PINCTRL_PIN(128 + 28, "PC_D3"),
+ PINCTRL_PIN(128 + 29, "PC_D4"),
+ PINCTRL_PIN(128 + 30, "PC_D5"),
+ PINCTRL_PIN(128 + 31, "PC_D6"),
+ PINCTRL_PIN(128 + 32, "PC_D7"),
+ PINCTRL_PIN(128 + 33, "PC_MOSTRT"),
+ PINCTRL_PIN(128 + 34, "PC_MOVAL"),
+ PINCTRL_PIN(128 + 35, "PC_MDO0"),
+ PINCTRL_PIN(128 + 36, "PC_MDO1"),
+ PINCTRL_PIN(128 + 37, "PC_MDO2"),
+ PINCTRL_PIN(128 + 38, "PC_MDO3"),
+ PINCTRL_PIN(128 + 39, "PC_MDO4"),
+ PINCTRL_PIN(128 + 40, "PC_MDO5"),
+ PINCTRL_PIN(128 + 41, "PC_MDO6"),
+ PINCTRL_PIN(128 + 42, "PC_MDO7"),
+ PINCTRL_PIN(128 + 43, "PC_MISTRT"),
+ PINCTRL_PIN(128 + 44, "PC_MIVAL"),
+ PINCTRL_PIN(128 + 45, "PC_MDI0"),
+ PINCTRL_PIN(128 + 46, "PC_MDI1"),
+ PINCTRL_PIN(128 + 47, "PC_MDI2"),
+ PINCTRL_PIN(128 + 48, "PC_MDI3"),
+ PINCTRL_PIN(128 + 49, "PC_MDI4"),
+ PINCTRL_PIN(128 + 50, "PC_MDI5"),
+ PINCTRL_PIN(128 + 51, "PC_MDI6"),
+ PINCTRL_PIN(128 + 52, "PC_MDI7"),
+ PINCTRL_PIN(128 + 53, "PC_MICLK"),
+ /* Unmuxed GPIOs */
+ PINCTRL_PIN(256 + 0, "GPIOB0"),
+ PINCTRL_PIN(256 + 1, "GPIOB1"),
+
+ PINCTRL_PIN(256 + 2, "GPIOD0"),
+ PINCTRL_PIN(256 + 3, "GPIOD1"),
+
+ PINCTRL_PIN(256 + 4, "GPIOF0"),
+ PINCTRL_PIN(256 + 5, "GPIOF1"),
+
+ PINCTRL_PIN(256 + 6, "GPIOH0"),
+ PINCTRL_PIN(256 + 7, "GPIOH1"),
+
+ PINCTRL_PIN(256 + 8, "GPIOI0"),
+ PINCTRL_PIN(256 + 9, "GPIOI1"),
+ PINCTRL_PIN(256 + 10, "GPIOI2"),
+ PINCTRL_PIN(256 + 11, "GPIOI3"),
+ PINCTRL_PIN(256 + 12, "GPIOI4"),
+ PINCTRL_PIN(256 + 13, "GPIOI5"),
+ PINCTRL_PIN(256 + 14, "GPIOI6"),
+ PINCTRL_PIN(256 + 15, "GPIOI7"),
+ PINCTRL_PIN(256 + 16, "GPIOI8"),
+ PINCTRL_PIN(256 + 17, "GPIOI9"),
+ PINCTRL_PIN(256 + 18, "GPIOI10"),
+ PINCTRL_PIN(256 + 19, "GPIOI11"),
+
+ PINCTRL_PIN(256 + 20, "GPION0"),
+ PINCTRL_PIN(256 + 21, "GPION1"),
+ PINCTRL_PIN(256 + 22, "GPION2"),
+ PINCTRL_PIN(256 + 23, "GPION3"),
+#define MAX_PIN (256 + 24)
+ PINCTRL_PIN(MAX_PIN, "GPION4"),
+};
+
+
+/* Port 1 */
+static const unsigned mis0_pins[] = { 0, 1, 2, 3};
+static const unsigned gpioa_pins[] = { 4, 5, 6};
+static const unsigned mis1_pins[] = { 7, 8, 9, 10};
+static const unsigned mip1_pins[] = { 0, 1, 2, 3, 4, 5,
+ 6, 7, 8, 9, 10};
+
+/* Port 2 */
+static const unsigned mis2_pins[] = {16, 17, 18, 19};
+static const unsigned gpioc_pins[] = {20, 21, 22};
+static const unsigned mis3_pins[] = {23, 24, 25, 26};
+static const unsigned mip3_pins[] = {16, 17, 18, 19, 20, 21,
+ 22, 23, 24, 25, 26};
+
+/* Port 3 */
+static const unsigned mis4_pins[] = {32, 33, 34, 35};
+static const unsigned gpioe_pins[] = {36, 37, 38};
+static const unsigned mis5_pins[] = {39, 40, 41, 42};
+static const unsigned mip5_pins[] = {32, 33, 34, 35, 36, 37,
+ 38, 39, 40, 41, 42};
+
+/* Port 4 */
+static const unsigned mis6_pins[] = {48, 49, 50, 51};
+static const unsigned gpiog_pins[] = {52, 53, 54};
+static const unsigned mis7_pins[] = {55, 56, 57, 58};
+static const unsigned mip7_pins[] = {48, 49, 50, 51, 52, 53,
+ 54, 55, 56, 57, 58};
+
+/* Port 6 */
+static const unsigned mop_pins[] = {64, 65, 66, 67, 68,
+ 69, 70, 71, 72, 73};
+static const unsigned mos0_pins[] = {64, 65, 66};
+static const unsigned mos1_pins[] = {67, 68, 69};
+static const unsigned mos2_pins[] = {70, 71, 72};
+static const unsigned mos3_pins[] = {73};
+
+/* Port 7 */
+static const unsigned uart0_pins[] = {80, 81, 82, 83};
+static const unsigned uart1_pins[] = {84, 85, 86, 87};
+static const unsigned gpiol_pins[] = {80, 81, 82, 83};
+static const unsigned gpiom_pins[] = {84, 85, 86, 87};
+
+/* Port 8 */
+static const unsigned spi3_pins[] = {96, 97, 98, 99};
+static const unsigned jtag_pins[] = {96, 97, 98, 99};
+
+/* Port 9 */
+static const unsigned spi1_pins[] = {112, 113, 114, 115, 116};
+static const unsigned gpion_pins[] = {112, 113, 114, 115, 116};
+
+/* Port 5 */
+static const unsigned gpioj_pins[] = {128, 129, 130, 131, 132, 133, 134,
+ 135, 136, 137, 138, 139, 140, 141,
+ 142, 143, 144, 145, 146, 147, 148,
+ 149, 150, 151, 152, 153, 154, 155,
+ 156, 157, 158, 159};
+static const unsigned gpiok_pins[] = {160, 161, 162, 163, 164, 165, 166, 167,
+ 168, 169, 170, 171, 172, 173, 174,
+ 175, 176, 177, 178, 179, 180, 181};
+static const unsigned ciplus_pins[] = {128, 129, 130, 131, 132, 133, 134,
+ 135, 136, 137, 138, 139, 140, 141, 142,
+ 143, 144, 145, 146, 147, 148, 149, 150,
+ 151, 152, 153, 154, 155, 156, 157, 158,
+ 159, 160, 161, 162, 163, 164, 165, 166,
+ 167, 168, 169, 170, 171, 172, 173, 174,
+ 175, 176, 177, 178, 179, 180, 181};
+static const unsigned mcard_pins[] = {131, 138, 139, 140, 150, 151, 161,
+ 163, 164, 165, 166, 167, 168, 169, 170,
+ 171, 173, 174, 175, 176, 177, 178, 179,
+ 180, 181};
+static const unsigned stc0_pins[] = {162, 163, 164, 165, 166, 167, 168};
+static const unsigned stc1_pins[] = {153, 154, 155, 156, 157, 158, 172};
+
+/* Unmuxed GPIOs */
+static const unsigned gpiob_pins[] = {256, 257};
+static const unsigned gpiod_pins[] = {258, 259};
+static const unsigned gpiof_pins[] = {260, 261};
+static const unsigned gpioh_pins[] = {262, 263};
+static const unsigned gpioi_pins[] = {264, 265, 266, 267, 268, 269, 270,
+ 271, 272, 273, 274, 275};
+
+
+struct tb10x_pinfuncgrp {
+ const char *name;
+ const unsigned int *pins;
+ const unsigned int pincnt;
+ const int port;
+ const unsigned int mode;
+ const int isgpio;
+ struct tb10x_pinctrl_state *pctl;
+};
+#define DEFPINFUNCGRP(NAME, PORT, MODE, ISGPIO) { \
+ .name = __stringify(NAME), \
+ .pins = NAME, .pincnt = ARRAY_SIZE(NAME), \
+ .port = (PORT), .mode = (MODE), .pctl = NULL, \
+ .isgpio = (ISGPIO), \
+ }
+static struct tb10x_pinfuncgrp tb10x_pingroups[] = {
+ DEFPINFUNCGRP(mis0_pins, 0, 0, 0),
+ DEFPINFUNCGRP(gpioa_pins, 0, 0, 1),
+ DEFPINFUNCGRP(mis1_pins, 0, 0, 0),
+ DEFPINFUNCGRP(mip1_pins, 0, 1, 0),
+ DEFPINFUNCGRP(mis2_pins, 1, 0, 0),
+ DEFPINFUNCGRP(gpioc_pins, 1, 0, 1),
+ DEFPINFUNCGRP(mis3_pins, 1, 0, 0),
+ DEFPINFUNCGRP(mip3_pins, 1, 1, 0),
+ DEFPINFUNCGRP(mis4_pins, 2, 0, 0),
+ DEFPINFUNCGRP(gpioe_pins, 2, 0, 1),
+ DEFPINFUNCGRP(mis5_pins, 2, 0, 0),
+ DEFPINFUNCGRP(mip5_pins, 2, 1, 0),
+ DEFPINFUNCGRP(mis6_pins, 3, 0, 0),
+ DEFPINFUNCGRP(gpiog_pins, 3, 0, 1),
+ DEFPINFUNCGRP(mis7_pins, 3, 0, 0),
+ DEFPINFUNCGRP(mip7_pins, 3, 1, 0),
+ DEFPINFUNCGRP(gpioj_pins, 4, 0, 1),
+ DEFPINFUNCGRP(gpiok_pins, 4, 0, 1),
+ DEFPINFUNCGRP(ciplus_pins, 4, 1, 0),
+ DEFPINFUNCGRP(mcard_pins, 4, 2, 0),
+ DEFPINFUNCGRP(stc0_pins, 4, 3, 0),
+ DEFPINFUNCGRP(stc1_pins, 4, 3, 0),
+ DEFPINFUNCGRP(mop_pins, 5, 0, 0),
+ DEFPINFUNCGRP(mos0_pins, 5, 1, 0),
+ DEFPINFUNCGRP(mos1_pins, 5, 1, 0),
+ DEFPINFUNCGRP(mos2_pins, 5, 1, 0),
+ DEFPINFUNCGRP(mos3_pins, 5, 1, 0),
+ DEFPINFUNCGRP(uart0_pins, 6, 0, 0),
+ DEFPINFUNCGRP(uart1_pins, 6, 0, 0),
+ DEFPINFUNCGRP(gpiol_pins, 6, 1, 1),
+ DEFPINFUNCGRP(gpiom_pins, 6, 1, 1),
+ DEFPINFUNCGRP(spi3_pins, 7, 0, 0),
+ DEFPINFUNCGRP(jtag_pins, 7, 1, 0),
+ DEFPINFUNCGRP(spi1_pins, 8, 0, 0),
+ DEFPINFUNCGRP(gpion_pins, 8, 1, 1),
+ DEFPINFUNCGRP(gpiob_pins, -1, 0, 1),
+ DEFPINFUNCGRP(gpiod_pins, -1, 0, 1),
+ DEFPINFUNCGRP(gpiof_pins, -1, 0, 1),
+ DEFPINFUNCGRP(gpioh_pins, -1, 0, 1),
+ DEFPINFUNCGRP(gpioi_pins, -1, 0, 1),
+};
+#undef DEFPINFUNCGRP
+
+struct tb10x_of_pinfunc {
+ const char *name;
+ const char *group;
+};
+
+#define TB10X_PORTS (9)
+
+struct tb10x_pinctrl_state {
+ struct pinctrl_dev *pctl;
+ void *iobase;
+ const struct tb10x_pinfuncgrp *pingroups;
+ unsigned int pinfuncgrpcnt;
+ struct tb10x_of_pinfunc *pinfuncs;
+ unsigned int pinfuncnt;
+ struct mutex mutex;
+ struct {
+ unsigned int mode;
+ unsigned int count;
+ } ports[TB10X_PORTS];
+ DECLARE_BITMAP(gpios, MAX_PIN + 1);
+};
+
+static struct tb10x_pinfuncgrp *tb10x_get_pinfuncgrp(const char *name)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tb10x_pingroups); i++)
+ if (!strcmp(name, tb10x_pingroups[i].name))
+ return &tb10x_pingroups[i];
+
+ return ERR_PTR(-ENODEV);
+}
+
+struct tb10x_pinfuncgrp *tb10x_prepare_gpio_range(struct device_node *dn,
+ struct pinctrl_gpio_range *gr)
+{
+ const char *name;
+ int ret;
+ struct tb10x_pinfuncgrp *pfg;
+
+ ret = of_property_read_string(dn, "pingrp", &name);
+ if (ret)
+ return ERR_PTR(ret);
+
+ pfg = tb10x_get_pinfuncgrp(name);
+
+ if (!IS_ERR(pfg)) {
+ if (!pfg->isgpio)
+ return ERR_PTR(-EINVAL);
+
+ if (!pfg->pctl)
+ return ERR_PTR(-EPROBE_DEFER);
+
+ gr->pin_base = pfg->pins[0];
+ gr->npins = pfg->pincnt;
+ }
+
+ return pfg;
+}
+EXPORT_SYMBOL(tb10x_prepare_gpio_range);
+
+void tb10x_setup_gpio_range(struct tb10x_pinfuncgrp *pfg,
+ struct pinctrl_gpio_range *gr)
+{
+ pinctrl_add_gpio_range(pfg->pctl->pctl, gr);
+}
+EXPORT_SYMBOL(tb10x_setup_gpio_range);
+
+static inline void tb10x_pinctrl_set_config(struct tb10x_pinctrl_state *state,
+ unsigned int port, unsigned int mode)
+{
+ u32 pcfg;
+
+ if (state->ports[port].count)
+ return;
+
+ state->ports[port].mode = mode;
+
+ pcfg = ioread32(state->iobase) & ~(0x3 << (2 * port));
+ iowrite32(pcfg | ((mode & 0x3) << (2 * port)), state->iobase);
+}
+
+static inline unsigned int tb10x_pinctrl_get_config(
+ struct tb10x_pinctrl_state *state,
+ unsigned int port)
+{
+ return (ioread32(state->iobase) >> (2 * port)) & 0x3;
+}
+
+static int tb10x_get_groups_count(struct pinctrl_dev *pctl)
+{
+ struct tb10x_pinctrl_state *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 *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 *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)
+{
+ struct pinctrl_map *m;
+ const char *string;
+
+ if (of_property_read_string(np_config, "pingrp", &string)) {
+ pr_err("%s: No pingrp property in device tree.\n",
+ np_config->full_name);
+ return -EINVAL;
+ }
+
+ m = kzalloc(sizeof(struct pinctrl_map), GFP_KERNEL);
+ if (!m)
+ return -ENOMEM;
+
+ m->type = PIN_MAP_TYPE_MUX_GROUP;
+ m->data.mux.group = string;
+ m->data.mux.function = np_config->name;
+ *map = m;
+ *num_maps = 1;
+ return 0;
+}
+
+static void tb10x_dt_free_map(struct pinctrl_dev *pctldev,
+ struct pinctrl_map *map, unsigned num_maps)
+{
+ kfree(map);
+}
+
+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 = tb10x_dt_free_map,
+};
+
+static int tb10x_get_functions_count(struct pinctrl_dev *pctl)
+{
+ struct tb10x_pinctrl_state *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 *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 *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 *state = pinctrl_dev_get_drvdata(pctl);
+ int muxport = -1;
+ int muxmode = -1;
+ int i;
+
+ mutex_lock(&state->mutex);
+
+ for (i = 0; i < ARRAY_SIZE(tb10x_pingroups); i++) {
+ struct tb10x_pinfuncgrp *pfg = &tb10x_pingroups[i];
+ unsigned int port = pfg->port;
+ unsigned int mode = pfg->mode;
+ int j;
+
+ if (port < 0)
+ continue;
+
+ if (pfg->isgpio) {
+ muxport = port;
+ muxmode = mode;
+ continue;
+ }
+
+ for (j = 0; j < pfg->pincnt; j++) {
+ if (pin == pfg->pins[j]) {
+ if (state->ports[port].count
+ && (state->ports[port].mode == mode)) {
+ mutex_unlock(&state->mutex);
+ return -EBUSY;
+ }
+ break;
+ }
+ }
+ }
+
+ set_bit(pin, state->gpios);
+
+ /* don't need to check for count == 0 because set_config is a NOP
+ * if count != 0
+ */
+ 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 *state = pinctrl_dev_get_drvdata(pctl);
+
+ mutex_lock(&state->mutex);
+
+ clear_bit(pin, state->gpios);
+
+ mutex_unlock(&state->mutex);
+}
+
+static int tb10x_pctl_enable(struct pinctrl_dev *pctl,
+ unsigned func_selector, unsigned group_selector)
+{
+ struct tb10x_pinctrl_state *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);
+
+ if (state->ports[grp->port].count
+ && (state->ports[grp->port].mode != grp->mode)) {
+ mutex_unlock(&state->mutex);
+ return -EBUSY;
+ }
+
+ 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 void tb10x_pctl_disable(struct pinctrl_dev *pctl,
+ unsigned func_selector, unsigned group_selector)
+{
+ struct tb10x_pinctrl_state *state = pinctrl_dev_get_drvdata(pctl);
+ const struct tb10x_pinfuncgrp *grp = &state->pingroups[group_selector];
+
+ if (grp->port < 0)
+ return;
+
+ mutex_lock(&state->mutex);
+
+ state->ports[grp->port].count--;
+
+ mutex_unlock(&state->mutex);
+}
+
+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,
+ .enable = tb10x_pctl_enable,
+ .disable = tb10x_pctl_disable,
+};
+
+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 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ struct device_node *of_node = pdev->dev.of_node;
+ struct device_node *child;
+ struct tb10x_pinctrl_state *state;
+ int i;
+
+ if (!of_node) {
+ dev_err(&pdev->dev, "No device tree node found.\n");
+ return -EINVAL;
+ }
+
+ if (!mem) {
+ dev_err(&pdev->dev, "No memory resource defined.\n");
+ return -EINVAL;
+ }
+
+ state = kzalloc(sizeof(struct tb10x_pinctrl_state) +
+ 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);
+
+ if (!request_mem_region(mem->start, resource_size(mem), pdev->name)) {
+ dev_err(&pdev->dev, "Request register region failed.\n");
+ ret = -EBUSY;
+ goto request_mem_fail;
+ }
+
+ state->iobase = ioremap(mem->start, resource_size(mem));
+ if (!state->iobase) {
+ dev_err(&pdev->dev, "Request register region failed.\n");
+ ret = -EBUSY;
+ goto ioremap_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, "pingrp", &name)) {
+ struct tb10x_pinfuncgrp *pfg;
+
+ pfg = tb10x_get_pinfuncgrp(name);
+
+ if (IS_ERR(pfg) || pfg->pctl) {
+ dev_err(&pdev->dev,
+ "Could not allocate pin group %s.\n",
+ name);
+ continue;
+ }
+ pfg->pctl = state;
+ state->pinfuncs[state->pinfuncnt].name = child->name;
+ state->pinfuncs[state->pinfuncnt].group = name;
+ state->pinfuncnt++;
+ }
+ }
+
+ state->pctl = pinctrl_register(&tb10x_pindesc, &pdev->dev, state);
+ if (IS_ERR(state->pctl)) {
+ dev_err(&pdev->dev, "could not register TB10x pin driver\n");
+ ret = PTR_ERR(state->pctl);
+ goto pinctrl_reg_fail;
+ }
+
+ return 0;
+
+pinctrl_reg_fail:
+ iounmap(state->iobase);
+ioremap_fail:
+ release_region(mem->start, resource_size(mem));
+request_mem_fail:
+ mutex_destroy(&state->mutex);
+ kfree(state);
+ return ret;
+}
+
+static int tb10x_pinctrl_remove(struct platform_device *pdev)
+{
+ struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ struct tb10x_pinctrl_state *state = platform_get_drvdata(pdev);
+ int i;
+
+ pinctrl_unregister(state->pctl);
+
+ for (i = 0; i < ARRAY_SIZE(tb10x_pingroups); i++)
+ if (tb10x_pingroups[i].pctl == state)
+ tb10x_pingroups[i].pctl = NULL;
+
+ iounmap(state->iobase);
+
+ release_region(mem->start, resource_size(mem));
+
+ mutex_destroy(&state->mutex);
+
+ kfree(state);
+
+ return 0;
+}
+
+static const struct of_device_id tb10x_pinctrl_dt_ids[] = {
+ { .compatible = TB10X_IOMUX_COMPATIBLE },
+ { }
+};
+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),
+ .owner = THIS_MODULE
+ }
+};
+
+static int __init tb10x_iopinctrl_init(void)
+{
+ return platform_driver_register(&tb10x_pinctrl_pdrv);
+}
+
+static void __exit tb10x_iopinctrl_exit(void)
+{
+ platform_driver_unregister(&tb10x_pinctrl_pdrv);
+}
+
+MODULE_AUTHOR("Christian Ruppert <christian.ruppert@abilis.com>");
+MODULE_LICENSE("GPL");
+module_init(tb10x_iopinctrl_init);
+module_exit(tb10x_iopinctrl_exit);
diff --git a/include/linux/pinctrl/pinctrl-tb10x.h b/include/linux/pinctrl/pinctrl-tb10x.h
new file mode 100644
index 0000000..310541b
--- /dev/null
+++ b/include/linux/pinctrl/pinctrl-tb10x.h
@@ -0,0 +1,46 @@
+/*
+ * Abilis Systems TB10x pin control driver
+ *
+ * Copyright (C) Abilis Systems 2013
+ *
+ * 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
+ */
+
+#ifndef PINCTRL_TB10X_H
+#define PINCTRL_TB10X_H
+
+struct tb10x_pinfuncgrp; /* Opaque structure */
+
+#ifdef CONFIG_PINCTRL_TB10X
+struct tb10x_pinfuncgrp *tb10x_prepare_gpio_range(struct device_node *dn,
+ struct pinctrl_gpio_range *gr);
+
+void tb10x_setup_gpio_range(struct tb10x_pinfuncgrp *pfg,
+ struct pinctrl_gpio_range *gr);
+#else
+/*static inline struct tb10x_pinfuncgrp *tb10x_prepare_gpio_range(
+ struct device_node *dn, struct pinctrl_gpio_range *gr)
+{
+ return -ENXIO;
+}
+
+static inline void tb10x_setup_gpio_range(struct tb10x_pinfuncgrp *pfg,
+ struct pinctrl_gpio_range *gr)
+{
+}*/
+#endif
+
+#endif
--
1.7.1


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