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yaml --- r: 192184 b: refs/heads/master c: 1de238e h: refs/heads/master v: v3
git-mirror · May 13, 2010 · 49367c4 · 49367c4
1 parent 3530ac1
commit 49367c4
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diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5e96da5d5074eae3b94d4abadfc114febb6e2a51
+refs/heads/master: 1de238e0eb5181bdeb842d7ea8edebd52c2a9c3a
diff --git a/trunk/arch/arm/mach-msm/gpio.c b/trunk/arch/arm/mach-msm/gpio.c
@@ -0,0 +1,85 @@
+/* linux/arch/arm/mach-msm/gpio.c
+ *
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2009, Code Aurora Forum. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <mach/gpio.h>
+#include "proc_comm.h"
+
+int gpio_tlmm_config(unsigned config, unsigned disable)
+{
+	return msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &config, &disable);
+}
+EXPORT_SYMBOL(gpio_tlmm_config);
+
+int msm_gpios_enable(const struct msm_gpio *table, int size)
+{
+	int rc;
+	int i;
+	const struct msm_gpio *g;
+	for (i = 0; i < size; i++) {
+		g = table + i;
+		rc = gpio_tlmm_config(g->gpio_cfg, GPIO_ENABLE);
+		if (rc) {
+			pr_err("gpio_tlmm_config(0x%08x, GPIO_ENABLE)"
+			       " <%s> failed: %d\n",
+			       g->gpio_cfg, g->label ?: "?", rc);
+			pr_err("pin %d func %d dir %d pull %d drvstr %d\n",
+			       GPIO_PIN(g->gpio_cfg), GPIO_FUNC(g->gpio_cfg),
+			       GPIO_DIR(g->gpio_cfg), GPIO_PULL(g->gpio_cfg),
+			       GPIO_DRVSTR(g->gpio_cfg));
+			goto err;
+		}
+	}
+	return 0;
+err:
+	msm_gpios_disable(table, i);
+	return rc;
+}
+EXPORT_SYMBOL(msm_gpios_enable);
+
+void msm_gpios_disable(const struct msm_gpio *table, int size)
+{
+	int rc;
+	int i;
+	const struct msm_gpio *g;
+	for (i = size-1; i >= 0; i--) {
+		g = table + i;
+		rc = gpio_tlmm_config(g->gpio_cfg, GPIO_DISABLE);
+		if (rc) {
+			pr_err("gpio_tlmm_config(0x%08x, GPIO_DISABLE)"
+			       " <%s> failed: %d\n",
+			       g->gpio_cfg, g->label ?: "?", rc);
+			pr_err("pin %d func %d dir %d pull %d drvstr %d\n",
+			       GPIO_PIN(g->gpio_cfg), GPIO_FUNC(g->gpio_cfg),
+			       GPIO_DIR(g->gpio_cfg), GPIO_PULL(g->gpio_cfg),
+			       GPIO_DRVSTR(g->gpio_cfg));
+		}
+	}
+}
+EXPORT_SYMBOL(msm_gpios_disable);
+
+int msm_gpios_request_enable(const struct msm_gpio *table, int size)
+{
+	int rc = msm_gpios_enable(table, size);
+	return rc;
+}
+EXPORT_SYMBOL(msm_gpios_request_enable);
+
+void msm_gpios_disable_free(const struct msm_gpio *table, int size)
+{
+	msm_gpios_disable(table, size);
+}
+EXPORT_SYMBOL(msm_gpios_disable_free);
diff --git a/trunk/arch/arm/mach-msm/include/mach/gpio.h b/trunk/arch/arm/mach-msm/include/mach/gpio.h
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2007 Google, Inc.
+ * Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
+ * Author: Mike Lockwood <lockwood@android.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 __ASM_ARCH_MSM_GPIO_H
+#define __ASM_ARCH_MSM_GPIO_H
+
+/**
+ * struct msm_gpio - GPIO pin description
+ * @gpio_cfg - configuration bitmap, as per gpio_tlmm_config()
+ * @label - textual label
+ *
+ * Usually, GPIO's are operated by sets.
+ * This struct accumulate all GPIO information in single source
+ * and facilitete group operations provided by msm_gpios_xxx()
+ */
+struct msm_gpio {
+	u32 gpio_cfg;
+	const char *label;
+};
+
+/**
+ * msm_gpios_request_enable() - request and enable set of GPIOs
+ *
+ * Request and configure set of GPIO's
+ * In case of error, all operations rolled back.
+ * Return error code.
+ *
+ * @table: GPIO table
+ * @size:  number of entries in @table
+ */
+int msm_gpios_request_enable(const struct msm_gpio *table, int size);
+
+/**
+ * msm_gpios_disable_free() - disable and free set of GPIOs
+ *
+ * @table: GPIO table
+ * @size:  number of entries in @table
+ */
+void msm_gpios_disable_free(const struct msm_gpio *table, int size);
+
+/**
+ * msm_gpios_request() - request set of GPIOs
+ * In case of error, all operations rolled back.
+ * Return error code.
+ *
+ * @table: GPIO table
+ * @size:  number of entries in @table
+ */
+int msm_gpios_request(const struct msm_gpio *table, int size);
+
+/**
+ * msm_gpios_free() - free set of GPIOs
+ *
+ * @table: GPIO table
+ * @size:  number of entries in @table
+ */
+void msm_gpios_free(const struct msm_gpio *table, int size);
+
+/**
+ * msm_gpios_enable() - enable set of GPIOs
+ * In case of error, all operations rolled back.
+ * Return error code.
+ *
+ * @table: GPIO table
+ * @size:  number of entries in @table
+ */
+int msm_gpios_enable(const struct msm_gpio *table, int size);
+
+/**
+ * msm_gpios_disable() - disable set of GPIOs
+ *
+ * @table: GPIO table
+ * @size:  number of entries in @table
+ */
+void msm_gpios_disable(const struct msm_gpio *table, int size);
+
+/* GPIO TLMM (Top Level Multiplexing) Definitions */
+
+/* GPIO TLMM: Function -- GPIO specific */
+
+/* GPIO TLMM: Direction */
+enum {
+	GPIO_INPUT,
+	GPIO_OUTPUT,
+};
+
+/* GPIO TLMM: Pullup/Pulldown */
+enum {
+	GPIO_NO_PULL,
+	GPIO_PULL_DOWN,
+	GPIO_KEEPER,
+	GPIO_PULL_UP,
+};
+
+/* GPIO TLMM: Drive Strength */
+enum {
+	GPIO_2MA,
+	GPIO_4MA,
+	GPIO_6MA,
+	GPIO_8MA,
+	GPIO_10MA,
+	GPIO_12MA,
+	GPIO_14MA,
+	GPIO_16MA,
+};
+
+enum {
+	GPIO_ENABLE,
+	GPIO_DISABLE,
+};
+
+#define GPIO_CFG(gpio, func, dir, pull, drvstr) \
+	((((gpio) & 0x3FF) << 4)        |	  \
+	 ((func) & 0xf)                  |	  \
+	 (((dir) & 0x1) << 14)           |	  \
+	 (((pull) & 0x3) << 15)          |	  \
+	 (((drvstr) & 0xF) << 17))
+
+/**
+ * extract GPIO pin from bit-field used for gpio_tlmm_config
+ */
+#define GPIO_PIN(gpio_cfg)    (((gpio_cfg) >>  4) & 0x3ff)
+#define GPIO_FUNC(gpio_cfg)   (((gpio_cfg) >>  0) & 0xf)
+#define GPIO_DIR(gpio_cfg)    (((gpio_cfg) >> 14) & 0x1)
+#define GPIO_PULL(gpio_cfg)   (((gpio_cfg) >> 15) & 0x3)
+#define GPIO_DRVSTR(gpio_cfg) (((gpio_cfg) >> 17) & 0xf)
+
+int gpio_tlmm_config(unsigned config, unsigned disable);
+
+#endif /* __ASM_ARCH_MSM_GPIO_H */