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>
diff --git a/drivers/pinctrl/pinctrl-msm.h b/drivers/pinctrl/pinctrl-msm.h
new file mode 100644
index 0000000..206e782e
--- /dev/null
+++ b/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