pinctrl: Add Qualcomm TLMM driver

This adds a pinctrl, pinmux, pinconf and gpiolib driver for the
Qualcomm TLMM block.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/Kconfig

@@ -203,6 +203,12 @@ config PINCTRL_IMX28
 	bool
 	select PINCTRL_MXS
 
+config PINCTRL_MSM
+	bool
+	select PINMUX
+	select PINCONF
+	select GENERIC_PINCONF
+
 config PINCTRL_NOMADIK
 	bool "Nomadik pin controller driver"
 	depends on ARCH_U8500 || ARCH_NOMADIK

drivers/pinctrl/Makefile

@@ -36,6 +36,7 @@ obj-$(CONFIG_PINCTRL_MXS)	+= pinctrl-mxs.o
 obj-$(CONFIG_PINCTRL_IMX23)	+= pinctrl-imx23.o
 obj-$(CONFIG_PINCTRL_IMX25)	+= pinctrl-imx25.o
 obj-$(CONFIG_PINCTRL_IMX28)	+= pinctrl-imx28.o
+obj-$(CONFIG_PINCTRL_MSM)	+= pinctrl-msm.o
 obj-$(CONFIG_PINCTRL_NOMADIK)	+= pinctrl-nomadik.o
 obj-$(CONFIG_PINCTRL_STN8815)	+= pinctrl-nomadik-stn8815.o
 obj-$(CONFIG_PINCTRL_DB8500)	+= pinctrl-nomadik-db8500.o

drivers/pinctrl/pinctrl-msm.h

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2013, Sony Mobile Communications AB.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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.
+ */
+#ifndef __PINCTRL_MSM_H__
+#define __PINCTRL_MSM_H__
+
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/machine.h>
+
+/**
+ * struct msm_function - a pinmux function
+ * @name:    Name of the pinmux function.
+ * @groups:  List of pingroups for this function.
+ * @ngroups: Number of entries in @groups.
+ */
+struct msm_function {
+	const char *name;
+	const char * const *groups;
+	unsigned ngroups;
+};
+
+/**
+ * struct msm_pingroup - Qualcomm pingroup definition
+ * @name:                 Name of the pingroup.
+ * @pins:	          A list of pins assigned to this pingroup.
+ * @npins:	          Number of entries in @pins.
+ * @funcs:                A list of pinmux functions that can be selected for
+ *                        this group. The index of the selected function is used
+ *                        for programming the function selector.
+ *                        Entries should be indices into the groups list of the
+ *                        struct msm_pinctrl_soc_data.
+ * @ctl_reg:              Offset of the register holding control bits for this group.
+ * @io_reg:               Offset of the register holding input/output bits for this group.
+ * @intr_cfg_reg:         Offset of the register holding interrupt configuration bits.
+ * @intr_status_reg:      Offset of the register holding the status bits for this group.
+ * @intr_target_reg:      Offset of the register specifying routing of the interrupts
+ *                        from this group.
+ * @mux_bit:              Offset in @ctl_reg for the pinmux function selection.
+ * @pull_bit:             Offset in @ctl_reg for the bias configuration.
+ * @drv_bit:              Offset in @ctl_reg for the drive strength configuration.
+ * @oe_bit:               Offset in @ctl_reg for controlling output enable.
+ * @in_bit:               Offset in @io_reg for the input bit value.
+ * @out_bit:              Offset in @io_reg for the output bit value.
+ * @intr_enable_bit:      Offset in @intr_cfg_reg for enabling the interrupt for this group.
+ * @intr_status_bit:      Offset in @intr_status_reg for reading and acking the interrupt
+ *                        status.
+ * @intr_target_bit:      Offset in @intr_target_reg for configuring the interrupt routing.
+ * @intr_raw_status_bit:  Offset in @intr_cfg_reg for the raw status bit.
+ * @intr_polarity_bit:    Offset in @intr_cfg_reg for specifying polarity of the interrupt.
+ * @intr_detection_bit:   Offset in @intr_cfg_reg for specifying interrupt type.
+ * @intr_detection_width: Number of bits used for specifying interrupt type,
+ *                        Should be 2 for SoCs that can detect both edges in hardware,
+ *                        otherwise 1.
+ */
+struct msm_pingroup {
+	const char *name;
+	const unsigned *pins;
+	unsigned npins;
+
+	unsigned funcs[8];
+
+	s16 ctl_reg;
+	s16 io_reg;
+	s16 intr_cfg_reg;
+	s16 intr_status_reg;
+	s16 intr_target_reg;
+
+	unsigned mux_bit:5;
+
+	unsigned pull_bit:5;
+	unsigned drv_bit:5;
+
+	unsigned oe_bit:5;
+	unsigned in_bit:5;
+	unsigned out_bit:5;
+
+	unsigned intr_enable_bit:5;
+	unsigned intr_status_bit:5;
+
+	unsigned intr_target_bit:5;
+	unsigned intr_raw_status_bit:5;
+	unsigned intr_polarity_bit:5;
+	unsigned intr_detection_bit:5;
+	unsigned intr_detection_width:5;
+};
+
+/**
+ * struct msm_pinctrl_soc_data - Qualcomm pin controller driver configuration
+ * @pins:       An array describing all pins the pin controller affects.
+ * @npins:      The number of entries in @pins.
+ * @functions:  An array describing all mux functions the SoC supports.
+ * @nfunctions: The number of entries in @functions.
+ * @groups:     An array describing all pin groups the pin SoC supports.
+ * @ngroups:    The numbmer of entries in @groups.
+ * @ngpio:      The number of pingroups the driver should expose as GPIOs.
+ */
+struct msm_pinctrl_soc_data {
+	const struct pinctrl_pin_desc *pins;
+	unsigned npins;
+	const struct msm_function *functions;
+	unsigned nfunctions;
+	const struct msm_pingroup *groups;
+	unsigned ngroups;
+	unsigned ngpios;
+};
+
+int msm_pinctrl_probe(struct platform_device *pdev,
+		      const struct msm_pinctrl_soc_data *soc_data);
+int msm_pinctrl_remove(struct platform_device *pdev);
+
+#endif