[rtems commit] bsp/tms570: Pinmux support and EMAC pin definition added
Gedare Bloom
gedare at rtems.org
Wed Nov 18 15:19:24 UTC 2015
Module: rtems
Branch: 4.11
Commit: e73d93247e019f74356588c3af1d72ce0e925077
Changeset: http://git.rtems.org/rtems/commit/?id=e73d93247e019f74356588c3af1d72ce0e925077
Author: Premysl Houdek <kom541000 at gmail.com>
Date: Thu Nov 12 23:11:28 2015 +0100
bsp/tms570: Pinmux support and EMAC pin definition added
Signed-off-by: Premysl Houdek <kom541000 at gmail.com>
---
c/src/lib/libbsp/arm/tms570/Makefile.am | 3 +-
.../lib/libbsp/arm/tms570/include/tms570-pinmux.h | 122 +++++++++++++++++++++
c/src/lib/libbsp/arm/tms570/pinmux/pinmux.c | 88 +++++++++++++++
c/src/lib/libbsp/arm/tms570/preinstall.am | 4 +
4 files changed, 216 insertions(+), 1 deletion(-)
diff --git a/c/src/lib/libbsp/arm/tms570/Makefile.am b/c/src/lib/libbsp/arm/tms570/Makefile.am
index a278aa2..7936b07 100644
--- a/c/src/lib/libbsp/arm/tms570/Makefile.am
+++ b/c/src/lib/libbsp/arm/tms570/Makefile.am
@@ -41,6 +41,7 @@ include_bsp_HEADERS += include/tms570-vim.h
include_bsp_HEADERS += include/tms570-pom.h
include_bsp_HEADERS += include/tms570-sci-driver.h
include_bsp_HEADERS += include/system-clocks.h
+include_bsp_HEADERS += include/tms570-pinmux.h
include_bsp_ti_hercules_HEADERS = include/ti_herc/reg_adc.h
include_bsp_ti_hercules_HEADERS += include/ti_herc/reg_ccmsr.h
@@ -151,7 +152,7 @@ libbsp_a_SOURCES += clock/benchmark_timer.c
# RTC
# GPIO
-
+libbsp_a_SOURCES += pinmux/pinmux.c
# Timer
# Benchmark Timer
diff --git a/c/src/lib/libbsp/arm/tms570/include/tms570-pinmux.h b/c/src/lib/libbsp/arm/tms570/include/tms570-pinmux.h
new file mode 100644
index 0000000..46c4ae5
--- /dev/null
+++ b/c/src/lib/libbsp/arm/tms570/include/tms570-pinmux.h
@@ -0,0 +1,122 @@
+/**
+ * @file tms570-pinmux.h
+ *
+ * @ingroup tms570
+ *
+ * @brief I/O Multiplexing Module (IOMM) basic support
+ */
+
+/*
+ * Copyright (c) 2015 Premysl Houdek <kom541000 at gmail.com>
+ *
+ * Google Summer of Code 2014 at
+ * Czech Technical University in Prague
+ * Zikova 1903/4
+ * 166 36 Praha 6
+ * Czech Republic
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef LIBBSP_ARM_TMS570_PINMUX_H
+#define LIBBSP_ARM_TMS570_PINMUX_H
+
+#ifndef ASM
+#include <bsp/tms570.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+#define TMS570_PIN_NUM_SHIFT 0
+#define TMS570_PIN_NUM_MASK 0x0fff
+
+#define TMS570_PIN_FNC_SHIFT 12
+#define TMS570_PIN_FNC_MASK 0xf000
+
+#define TMS570_PIN_FNC_AUTO (-1)
+
+#define TMS570_PIN_AND_FNC(pin, fnc) \
+ ((pin) | ((fnc)<<TMS570_PIN_FNC_SHIFT))
+
+#define TMS570_BALL_WITH_MMR(mmrx, pos) \
+ ((pos) | ((mmrx)<<2))
+
+/* Definition for pins/balls which has to be set for Ethernet MII */
+
+#define TMS570_BALL_C3 TMS570_BALL_WITH_MMR(0, 2)
+#define TMS570_BALL_C3_MIBSPI3NCS_3 TMS570_PIN_AND_FNC(TMS570_BALL_C3, 0)
+#define TMS570_BALL_C3_I2C_SCL TMS570_PIN_AND_FNC(TMS570_BALL_C3, 1)
+
+#define TMS570_BALL_F3 TMS570_BALL_WITH_MMR(20, 2)
+#define TMS570_BALL_F3_MII_COL TMS570_PIN_AND_FNC(TMS570_BALL_F3, 2)
+
+#define TMS570_BALL_B4 TMS570_BALL_WITH_MMR(17, 2)
+#define TMS570_BALL_B4_MII_CRS TMS570_PIN_AND_FNC(TMS570_BALL_B4, 1)
+
+#define TMS570_BALL_B11 TMS570_BALL_WITH_MMR(19, 1)
+#define TMS570_BALL_B11_MII_RX_DV TMS570_PIN_AND_FNC(TMS570_BALL_B11, 1)
+
+#define TMS570_BALL_N19 TMS570_BALL_WITH_MMR(10, 0)
+#define TMS570_BALL_N19_MII_RX_ER TMS570_PIN_AND_FNC(TMS570_BALL_N19, 1)
+
+#define TMS570_BALL_K19 TMS570_BALL_WITH_MMR(14, 1)
+#define TMS570_BALL_K19_MII_RX_CLK TMS570_PIN_AND_FNC(TMS570_BALL_K19, 1)
+
+#define TMS570_BALL_P1 TMS570_BALL_WITH_MMR(11, 3)
+#define TMS570_BALL_P1_MII_RXD_0 TMS570_PIN_AND_FNC(TMS570_BALL_P1, 2)
+
+#define TMS570_BALL_A14 TMS570_BALL_WITH_MMR(12, 0)
+#define TMS570_BALL_A14_MII_RXD_1 TMS570_PIN_AND_FNC(TMS570_BALL_A14, 1)
+
+#define TMS570_BALL_G19 TMS570_BALL_WITH_MMR(12, 2)
+#define TMS570_BALL_G19_MII_RXD_2 TMS570_PIN_AND_FNC(TMS570_BALL_G19, 2)
+
+#define TMS570_BALL_H18 TMS570_BALL_WITH_MMR(12, 3)
+#define TMS570_BALL_H18_MII_RXD_3 TMS570_PIN_AND_FNC(TMS570_BALL_H18, 2)
+
+#define TMS570_BALL_D19 TMS570_BALL_WITH_MMR(17, 0)
+#define TMS570_BALL_D19_MII_TX_CLK TMS570_PIN_AND_FNC(TMS570_BALL_D19, 1)
+
+#define TMS570_BALL_J18 TMS570_BALL_WITH_MMR(13, 0)
+#define TMS570_BALL_J18_MII_TXD_0 TMS570_PIN_AND_FNC(TMS570_BALL_J18, 2)
+
+#define TMS570_BALL_J19 TMS570_BALL_WITH_MMR(13, 1)
+#define TMS570_BALL_J19_MII_TXD_1 TMS570_PIN_AND_FNC(TMS570_BALL_J19, 2)
+
+#define TMS570_BALL_R2 TMS570_BALL_WITH_MMR(13, 3)
+#define TMS570_BALL_R2_MII_TXD_2 TMS570_PIN_AND_FNC(TMS570_BALL_R2, 2)
+
+#define TMS570_BALL_E18 TMS570_BALL_WITH_MMR(14, 0)
+#define TMS570_BALL_E18_MII_TXD_3 TMS570_PIN_AND_FNC(TMS570_BALL_E18, 2)
+
+#define TMS570_BALL_H19 TMS570_BALL_WITH_MMR(13, 2)
+#define TMS570_BALL_H19_MII_TXEN TMS570_PIN_AND_FNC(TMS570_BALL_H19, 2)
+
+#define TMS570_BALL_V5 TMS570_BALL_WITH_MMR(7, 1)
+#define TMS570_BALL_V5_MDCLK TMS570_PIN_AND_FNC(TMS570_BALL_V5, 2)
+
+#define TMS570_BALL_G3 TMS570_BALL_WITH_MMR(8, 1)
+#define TMS570_BALL_G3_MDIO TMS570_PIN_AND_FNC(TMS570_BALL_G3, 2)
+
+#define TMS570_BALL_XX TMS570_BALL_WITH_MMR(29, 3)
+#define TMS570_BALL_XX_GMII_SEL TMS570_PIN_AND_FNC(TMS570_BALL_XX, 0)
+
+/* Generic functions select pin to peripheral connection */
+
+void tms570_bsp_pin_set_function(int pin_num, int pin_fnc);
+
+void tms570_bsp_pin_clear_function(int pin_num, int pin_fnc);
+
+#endif
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_ARM_TMS570_IRQ_H */
diff --git a/c/src/lib/libbsp/arm/tms570/pinmux/pinmux.c b/c/src/lib/libbsp/arm/tms570/pinmux/pinmux.c
new file mode 100644
index 0000000..79d6b1e
--- /dev/null
+++ b/c/src/lib/libbsp/arm/tms570/pinmux/pinmux.c
@@ -0,0 +1,88 @@
+/**
+ * @file pinmux.c
+ *
+ * @ingroup tms570
+ *
+ * @brief I/O Multiplexing Module (IOMM) basic support
+ */
+
+/*
+ * Copyright (c) 2015 Premysl Houdek <kom541000 at gmail.com>
+ *
+ * Google Summer of Code 2014 at
+ * Czech Technical University in Prague
+ * Zikova 1903/4
+ * 166 36 Praha 6
+ * Czech Republic
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#include <bsp/tms570.h>
+#include <bsp/tms570-pinmux.h>
+
+/**
+ * @brief select desired function of pin/ball
+ *
+ * The function setups multiplexer to interconnect pin with
+ * specified function/peripheral. Pin number is index into pinmux
+ * entries array. Predefined values for pins are in a format
+ * TMS570_BALL_<column><row> (for example TMS570_BALL_N19).
+ * The multiplexer allows to interconnect one pin to multiple
+ * signal sources/sings in the theory but it is usually bad choice.
+ * The function sets only specified function and clears all other
+ * connections.
+ *
+ * @param[in] pin_num pin/ball identifier (index into pinmux array)
+ * @param[in] pin_fnc function number 0 .. 7, if value TMS570_PIN_FNC_AUTO
+ * is specified then pin function is extracted from
+ * pin_num argument
+ * @retval Void
+ */
+void
+tms570_bsp_pin_set_function(int pin_num, int pin_fnc)
+{
+ unsigned int pin_shift;
+ typeof(TMS570_IOMM.PINMUX.PINMMR0) *pinmmrx;
+
+ if ( pin_fnc == TMS570_PIN_FNC_AUTO ) {
+ pin_fnc = (pin_num & TMS570_PIN_FNC_MASK) >> TMS570_PIN_FNC_SHIFT;
+ }
+ pin_num = (pin_num & TMS570_PIN_NUM_MASK) >> TMS570_PIN_NUM_SHIFT;
+
+ pinmmrx = &TMS570_IOMM.PINMUX.PINMMR0;
+ pinmmrx += (pin_num >> 2);
+ pin_shift = (pin_num & 0x3)*8;
+ *pinmmrx = (*pinmmrx & ~(0xff << pin_shift)) | (1 << (pin_fnc + pin_shift));
+}
+
+/**
+ * @brief clear connection between pin and specified peripherals/function
+ *
+ * This function switches off given connection and leaves rest
+ * of multiplexer setup intact.
+ *
+ * @param[in] pin_num pin/ball identifier (index into pinmux array)
+ * @param[in] pin_fnc function number 0 .. 7, if value TMS570_PIN_FNC_AUTO
+ * is specified then pin function is extracted from
+ * pin_num argument
+ * @retval Void
+ */
+void
+tms570_bsp_pin_clear_function(int pin_num, int pin_fnc)
+{
+ unsigned int pin_shift;
+ typeof(TMS570_IOMM.PINMUX.PINMMR0) *pinmmrx;
+
+ if ( pin_fnc == TMS570_PIN_FNC_AUTO ) {
+ pin_fnc = (pin_num & TMS570_PIN_FNC_MASK) >> TMS570_PIN_FNC_SHIFT;
+ }
+ pin_num = (pin_num & TMS570_PIN_NUM_MASK) >> TMS570_PIN_NUM_SHIFT;
+
+ pinmmrx = &TMS570_IOMM.PINMUX.PINMMR0;
+ pinmmrx += (pin_num >> 2);
+ pin_shift = (pin_num & 0x3)*8;
+ *pinmmrx = *pinmmrx & ~(1 << (pin_fnc+pin_shift));
+}
diff --git a/c/src/lib/libbsp/arm/tms570/preinstall.am b/c/src/lib/libbsp/arm/tms570/preinstall.am
index c6408cb..2fddba8 100644
--- a/c/src/lib/libbsp/arm/tms570/preinstall.am
+++ b/c/src/lib/libbsp/arm/tms570/preinstall.am
@@ -114,6 +114,10 @@ $(PROJECT_INCLUDE)/bsp/system-clocks.h: include/system-clocks.h $(PROJECT_INCLUD
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/system-clocks.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/system-clocks.h
+$(PROJECT_INCLUDE)/bsp/tms570-pinmux.h: include/tms570-pinmux.h $(PROJECT_INCLUDE)/bsp/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/tms570-pinmux.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/tms570-pinmux.h
+
$(PROJECT_INCLUDE)/bsp/ti_herc/reg_adc.h: include/ti_herc/reg_adc.h $(PROJECT_INCLUDE)/bsp/ti_herc/$(dirstamp)
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/bsp/ti_herc/reg_adc.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/bsp/ti_herc/reg_adc.h
More information about the vc
mailing list