MXC: Add a digital audio multiplexer driver
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>hifive-unleashed-5.1
Sascha Hauer
parent
d8d982b1b2
commit
9eedbdf1b4
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@ -6,11 +6,13 @@ choice
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config MACH_MX21
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bool "i.MX21 support"
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select ARCH_MXC_AUDMUX_V1
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help
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This enables support for Freescale's MX2 based i.MX21 processor.
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config MACH_MX27
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bool "i.MX27 support"
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select ARCH_MXC_AUDMUX_V1
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help
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This enables support for Freescale's MX2 based i.MX27 processor.
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@ -2,11 +2,13 @@ if ARCH_MX3
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config ARCH_MX31
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select ARCH_HAS_RNGA
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select ARCH_MXC_AUDMUX_V2
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bool
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config ARCH_MX35
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bool
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select ARCH_MXC_IOMUX_V3
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select ARCH_MXC_AUDMUX_V2
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comment "MX3 platforms:"
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@ -78,4 +78,11 @@ config ARCH_HAS_RNGA
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config ARCH_MXC_IOMUX_V3
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bool
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config ARCH_MXC_AUDMUX_V1
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bool
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config ARCH_MXC_AUDMUX_V2
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bool
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endif
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@ -10,3 +10,5 @@ obj-$(CONFIG_ARCH_MX2) += iomux-mx1-mx2.o dma-mx1-mx2.o
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obj-$(CONFIG_ARCH_MXC_IOMUX_V3) += iomux-v3.o
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obj-$(CONFIG_MXC_PWM) += pwm.o
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obj-$(CONFIG_MXC_ULPI) += ulpi.o
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obj-$(CONFIG_ARCH_MXC_AUDMUX_V1) += audmux-v1.o
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obj-$(CONFIG_ARCH_MXC_AUDMUX_V2) += audmux-v2.o
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@ -0,0 +1,53 @@
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/*
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* Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
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*
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* Initial development of this code was funded by
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* Phytec Messtechnik GmbH, http://www.phytec.de
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/clk.h>
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#include <mach/audmux.h>
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#include <mach/hardware.h>
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static void __iomem *audmux_base;
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#define MXC_AUDMUX_V1_PCR(x) ((x) * 4)
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int mxc_audmux_v1_configure_port(unsigned int port, unsigned int pcr)
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{
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if (!audmux_base) {
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printk("%s: not configured\n", __func__);
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return -ENOSYS;
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}
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writel(pcr, audmux_base + MXC_AUDMUX_V1_PCR(port));
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return 0;
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}
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EXPORT_SYMBOL_GPL(mxc_audmux_v1_configure_port);
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static int mxc_audmux_v1_init(void)
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{
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if (cpu_is_mx27() || cpu_is_mx21())
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audmux_base = IO_ADDRESS(AUDMUX_BASE_ADDR);
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return 0;
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}
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postcore_initcall(mxc_audmux_v1_init);
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@ -0,0 +1,74 @@
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/*
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* Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
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*
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* Initial development of this code was funded by
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* Phytec Messtechnik GmbH, http://www.phytec.de
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/clk.h>
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#include <mach/audmux.h>
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#include <mach/hardware.h>
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static struct clk *audmux_clk;
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static void __iomem *audmux_base;
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#define MXC_AUDMUX_V2_PTCR(x) ((x) * 8)
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#define MXC_AUDMUX_V2_PDCR(x) ((x) * 8 + 4)
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int mxc_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
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unsigned int pdcr)
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{
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if (!audmux_base)
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return -ENOSYS;
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if (audmux_clk)
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clk_enable(audmux_clk);
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writel(ptcr, audmux_base + MXC_AUDMUX_V2_PTCR(port));
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writel(pdcr, audmux_base + MXC_AUDMUX_V2_PDCR(port));
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if (audmux_clk)
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clk_disable(audmux_clk);
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return 0;
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}
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EXPORT_SYMBOL_GPL(mxc_audmux_v2_configure_port);
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static int mxc_audmux_v2_init(void)
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{
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int ret;
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if (cpu_is_mx35()) {
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audmux_clk = clk_get(NULL, "audmux");
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if (IS_ERR(audmux_clk)) {
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ret = PTR_ERR(audmux_clk);
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printk(KERN_ERR "%s: cannot get clock: %d\n", __func__,
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ret);
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return ret;
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}
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}
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if (cpu_is_mx31() || cpu_is_mx35())
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audmux_base = IO_ADDRESS(AUDMUX_BASE_ADDR);
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return 0;
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}
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postcore_initcall(mxc_audmux_v2_init);
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@ -0,0 +1,52 @@
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#ifndef __MACH_AUDMUX_H
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#define __MACH_AUDMUX_H
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#define MX27_AUDMUX_HPCR1_SSI0 0
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#define MX27_AUDMUX_HPCR2_SSI1 1
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#define MX27_AUDMUX_HPCR3_SSI_PINS_4 2
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#define MX27_AUDMUX_PPCR1_SSI_PINS_1 3
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#define MX27_AUDMUX_PPCR2_SSI_PINS_2 4
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#define MX27_AUDMUX_PPCR3_SSI_PINS_3 5
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#define MX31_AUDMUX_PORT1_SSI0 0
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#define MX31_AUDMUX_PORT2_SSI1 1
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#define MX31_AUDMUX_PORT3_SSI_PINS_3 2
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#define MX31_AUDMUX_PORT4_SSI_PINS_4 3
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#define MX31_AUDMUX_PORT5_SSI_PINS_5 4
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#define MX31_AUDMUX_PORT6_SSI_PINS_6 5
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/* Register definitions for the i.MX21/27 Digital Audio Multiplexer */
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#define MXC_AUDMUX_V1_PCR_INMMASK(x) ((x) & 0xff)
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#define MXC_AUDMUX_V1_PCR_INMEN (1 << 8)
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#define MXC_AUDMUX_V1_PCR_TXRXEN (1 << 10)
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#define MXC_AUDMUX_V1_PCR_SYN (1 << 12)
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#define MXC_AUDMUX_V1_PCR_RXDSEL(x) (((x) & 0x7) << 13)
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#define MXC_AUDMUX_V1_PCR_RFCSEL(x) (((x) & 0xf) << 20)
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#define MXC_AUDMUX_V1_PCR_RCLKDIR (1 << 24)
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#define MXC_AUDMUX_V1_PCR_RFSDIR (1 << 25)
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#define MXC_AUDMUX_V1_PCR_TFCSEL(x) (((x) & 0xf) << 26)
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#define MXC_AUDMUX_V1_PCR_TCLKDIR (1 << 30)
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#define MXC_AUDMUX_V1_PCR_TFSDIR (1 << 31)
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/* Register definitions for the i.MX25/31/35 Digital Audio Multiplexer */
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#define MXC_AUDMUX_V2_PTCR_TFSDIR (1 << 31)
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#define MXC_AUDMUX_V2_PTCR_TFSEL(x) (((x) & 0xf) << 27)
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#define MXC_AUDMUX_V2_PTCR_TCLKDIR (1 << 26)
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#define MXC_AUDMUX_V2_PTCR_TCSEL(x) (((x) & 0xf) << 22)
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#define MXC_AUDMUX_V2_PTCR_RFSDIR (1 << 21)
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#define MXC_AUDMUX_V2_PTCR_RFSEL(x) (((x) & 0xf) << 17)
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#define MXC_AUDMUX_V2_PTCR_RCLKDIR (1 << 16)
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#define MXC_AUDMUX_V2_PTCR_RCSEL(x) (((x) & 0xf) << 12)
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#define MXC_AUDMUX_V2_PTCR_SYN (1 << 11)
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#define MXC_AUDMUX_V2_PDCR_RXDSEL(x) (((x) & 0x7) << 13)
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#define MXC_AUDMUX_V2_PDCR_TXRXEN (1 << 12)
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#define MXC_AUDMUX_V2_PDCR_MODE(x) (((x) & 0x3) << 8)
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#define MXC_AUDMUX_V2_PDCR_INMMASK(x) ((x) & 0xff)
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int mxc_audmux_v1_configure_port(unsigned int port, unsigned int pcr);
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int mxc_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
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unsigned int pdcr);
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#endif /* __MACH_AUDMUX_H */
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