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@xxxxxxxxxx>
Signed-off-by: Pierrick Hascoet <pierrick.hascoet@xxxxxxxxxx>
---
.../bindings/pinctrl/abilis,tb10x-iomux.txt | 79 ++
drivers/pinctrl/Kconfig | 4 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-tb10x.c | 878 ++++++++++++++++++++
4 files changed, 962 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt
create mode 100644 drivers/pinctrl/pinctrl-tb10x.c
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..f8ccd6c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt
@@ -0,0 +1,80 @@
+Abilis Systems TB10x pin controller
+===================================
+
+Required properties
+-------------------
+
+- compatible: should be "abilis,tb10x-iomux";
+- reg: should contain the physical address and size of the pin controller's
+ register range.
+
+
+Function definitions
+--------------------
+
+Functions are defined (and referenced) by sub-nodes of the pin controller.
+Every sub-node defines exactly one function (implying a set of pins).
+Every function is associated to one named pin group inside the pin controller
+driver and these names are used to associate pin group predefinitions to pin
+controller sub-nodes.
+
+Required function definition subnode properties:
+ - abilis,function: should be set to the name of the function's pin group.
+
+The following pin groups are available:
+ - GPIO ports: gpioa, gpiob, gpioc, gpiod, gpioe, gpiof, gpiog,
+ gpioh, gpioi, gpioj, gpiok, gpiol, gpiom, gpion
+ - Serial TS input ports: mis0, mis1, mis2, mis3, mis4, mis5, mis6, mis7
+ - Parallel TS input ports: mip1, mip3, mip5, mip7
+ - Serial TS output ports: mos0, mos1, mos2, mos3
+ - Parallel TS output port: mop
+ - CI+ port: ciplus
+ - CableCard (Mcard) port: mcard
+ - Smart card ports: stc0, stc1
+ - UART ports: uart0, uart1
+ - SPI ports: spi1, spi3
+ - JTAG: jtag
+
+All other ports of the chip are not multiplexed and thus not managed by this
+driver.
+
+
+GPIO ranges definition
+----------------------
+
+The named pin groups of GPIO ports can be used to define GPIO ranges as
+explained in Documentation/devicetree/bindings/gpio/gpio.txt.
+
+
+Example
+-------
+
+iomux: iomux@FF10601c {
+ compatible = "abilis,tb10x-iomux";
+ reg = <0xFF10601c 0x4>;
+ pctl_gpio_a: pctl-gpio-a {
+ abilis,function = "gpioa";
+ };
+ pctl_uart0: pctl-uart0 {
+ abilis,function = "uart0";
+ };
+};
+uart@FF100000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0xFF100000 0x100>;
+ clock-frequency = <166666666>;
+ interrupts = <25 1>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pctl_uart0>;
+};
+gpioa: gpio@FF140000 {
+ compatible = "abilis,tb10x-gpio";
+ reg = <0xFF140000 0x1000>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ ngpio = <3>;
+ gpio-ranges = <&iomux 0 0>;
+ gpio-ranges-group-names = "gpioa";
+};
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 5a8ad51..e9ede63 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -281,6 +281,10 @@ 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 d64563b..b740a85 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -51,6 +51,7 @@ obj-$(CONFIG_PINCTRL_S3C24XX) += pinctrl-s3c24xx.o
obj-$(CONFIG_PINCTRL_S3C64XX) += pinctrl-s3c64xx.o
obj-$(CONFIG_PINCTRL_XWAY) += pinctrl-xway.o
obj-$(CONFIG_PINCTRL_LANTIQ) += pinctrl-lantiq.o
+obj-$(CONFIG_PINCTRL_TB10X) += pinctrl-tb10x.o
obj-$(CONFIG_PINCTRL_ST) += pinctrl-st.o
obj-$(CONFIG_PINCTRL_VF610) += pinctrl-vf610.o
diff --git a/drivers/pinctrl/pinctrl-tb10x.c b/drivers/pinctrl/pinctrl-tb10x.c
new file mode 100644
index 0000000..1889967
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-tb10x.c
@@ -0,0 +1,879 @@
+/*
+ * Abilis Systems TB10x pin control driver
+ *
+ * Copyright (C) Abilis Systems 2012
+ *
+ * Author: Christian Ruppert <christian.ruppert@xxxxxxxxxx>
+ *
+ * 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>
+
+#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)
+{
+ struct pinctrl_map *m;
+ const char *string;
+
+ 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;
+ }
+
+ 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 = 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 port = pfg->port;
+ unsigned int mode = pfg->mode;
+ int j;
+
+ /* 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_enable(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 void tb10x_pctl_disable(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];
+
+ 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 *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;
+ }
+
+ if (!mem) {
+ dev_err(dev, "No memory resource defined.\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);
+
+ state->base = devm_ioremap_resource(dev, mem);
+ if (!state->base) {
+ dev_err(dev, "Request register region failed.\n");
+ ret = -EBUSY;
+ 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 (IS_ERR(state->pctl)) {
+ dev_err(dev, "could not register TB10x pin driver\n");
+ ret = PTR_ERR(state->pctl);
+ 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),
+ .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@xxxxxxxxxx>");
+MODULE_LICENSE("GPL");
+module_init(tb10x_iopinctrl_init);
+module_exit(tb10x_iopinctrl_exit);
--
1.7.1
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