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authorRajeshwari Shinde <rajeshwari.s@samsung.com>2012-06-06 19:54:29 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-07-07 14:07:25 +0200
commitc5e3710a185d821c3c68ae92f932a7a9956522bd (patch)
tree4f7362d79a8bd1c2833b00d64b8c24f3db9f87b7 /arch/arm/include
parenta0f5b5a3a28e5ba82515e58bf6a2209f6b7cb684 (diff)
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EXYNOS5: PINMUX: Added default pinumx settings
This patch performs the pinmux configuration in a common file. As of now only EXYNOS5 pinmux for SDMMC, UART and Ethernet is supported. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Acked-by: Chander Kashyap <chander.kashyap@linaro.org> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/arch-exynos/periph.h47
-rw-r--r--arch/arm/include/asm/arch-exynos/pinmux.h58
2 files changed, 105 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-exynos/periph.h b/arch/arm/include/asm/arch-exynos/periph.h
new file mode 100644
index 0000000..5db25aa
--- /dev/null
+++ b/arch/arm/include/asm/arch-exynos/periph.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Rajeshwari Shinde <rajeshwari.s@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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 __ASM_ARM_ARCH_PERIPH_H
+#define __ASM_ARM_ARCH_PERIPH_H
+
+/*
+ * Peripherals requiring clock/pinmux configuration. List will
+ * grow with support for more devices getting added.
+ *
+ */
+enum periph_id {
+ PERIPH_ID_SDMMC0,
+ PERIPH_ID_SDMMC1,
+ PERIPH_ID_SDMMC2,
+ PERIPH_ID_SDMMC3,
+ PERIPH_ID_SROMC,
+ PERIPH_ID_UART0,
+ PERIPH_ID_UART1,
+ PERIPH_ID_UART2,
+ PERIPH_ID_UART3,
+
+ PERIPH_ID_COUNT,
+ PERIPH_ID_NONE = -1,
+};
+
+#endif /* __ASM_ARM_ARCH_PERIPH_H */
diff --git a/arch/arm/include/asm/arch-exynos/pinmux.h b/arch/arm/include/asm/arch-exynos/pinmux.h
new file mode 100644
index 0000000..10ea736
--- /dev/null
+++ b/arch/arm/include/asm/arch-exynos/pinmux.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Abhilash Kesavan <a.kesavan@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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 __ASM_ARM_ARCH_PINMUX_H
+#define __ASM_ARM_ARCH_PINMUX_H
+
+#include "periph.h"
+
+/*
+ * Flags for setting specific configarations of peripherals.
+ * List will grow with support for more devices getting added.
+ */
+enum {
+ PINMUX_FLAG_NONE = 0x00000000,
+
+ /* Flags for eMMC */
+ PINMUX_FLAG_8BIT_MODE = 1 << 0, /* SDMMC 8-bit mode */
+
+ /* Flags for SROM controller */
+ PINMUX_FLAG_BANK = 3 << 0, /* bank number (0-3) */
+ PINMUX_FLAG_16BIT = 1 << 2, /* 16-bit width */
+};
+
+/**
+ * Configures the pinmux for a particular peripheral.
+ *
+ * Each gpio can be configured in many different ways (4 bits on exynos)
+ * such as "input", "output", "special function", "external interrupt"
+ * etc. This function will configure the peripheral pinmux along with
+ * pull-up/down and drive strength.
+ *
+ * @param peripheral peripheral to be configured
+ * @param flags configure flags
+ * @return 0 if ok, -1 on error (e.g. unsupported peripheral)
+ */
+int exynos_pinmux_config(int peripheral, int flags);
+
+#endif