zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/mcbsp.c b/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/mcbsp.c
new file mode 100644
index 0000000..577cb77
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/arch/arm/mach-omap2/mcbsp.c
@@ -0,0 +1,234 @@
+/*
+ * linux/arch/arm/mach-omap2/mcbsp.c
+ *
+ * Copyright (C) 2008 Instituto Nokia de Tecnologia
+ * Contact: Eduardo Valentin <eduardo.valentin@indt.org.br>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Multichannel mode not supported.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <mach/irqs.h>
+#include <plat/dma.h>
+#include <plat/cpu.h>
+#include <plat/mcbsp.h>
+#include <plat/omap_device.h>
+#include <linux/pm_runtime.h>
+
+#include "control.h"
+
+/*
+ * FIXME: Find a mechanism to enable/disable runtime the McBSP ICLK autoidle.
+ * Sidetone needs non-gated ICLK and sidetone autoidle is broken.
+ */
+#include "cm2xxx_3xxx.h"
+#include "cm-regbits-34xx.h"
+
+/* McBSP1 internal signal muxing function for OMAP2/3 */
+static int omap2_mcbsp1_mux_rx_clk(struct device *dev, const char *signal,
+ const char *src)
+{
+ u32 v;
+
+ v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+
+ if (!strcmp(signal, "clkr")) {
+ if (!strcmp(src, "clkr"))
+ v &= ~OMAP2_MCBSP1_CLKR_MASK;
+ else if (!strcmp(src, "clkx"))
+ v |= OMAP2_MCBSP1_CLKR_MASK;
+ else
+ return -EINVAL;
+ } else if (!strcmp(signal, "fsr")) {
+ if (!strcmp(src, "fsr"))
+ v &= ~OMAP2_MCBSP1_FSR_MASK;
+ else if (!strcmp(src, "fsx"))
+ v |= OMAP2_MCBSP1_FSR_MASK;
+ else
+ return -EINVAL;
+ } else {
+ return -EINVAL;
+ }
+
+ omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
+
+ return 0;
+}
+
+/* McBSP4 internal signal muxing function for OMAP4 */
+#define OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_FSX (1 << 31)
+#define OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_CLKX (1 << 30)
+static int omap4_mcbsp4_mux_rx_clk(struct device *dev, const char *signal,
+ const char *src)
+{
+ u32 v;
+
+ /*
+ * In CONTROL_MCBSPLP register only bit 30 (CLKR mux), and bit 31 (FSR
+ * mux) is used */
+ v = omap4_ctrl_pad_readl(OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_MCBSPLP);
+
+ if (!strcmp(signal, "clkr")) {
+ if (!strcmp(src, "clkr"))
+ v &= ~OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_CLKX;
+ else if (!strcmp(src, "clkx"))
+ v |= OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_CLKX;
+ else
+ return -EINVAL;
+ } else if (!strcmp(signal, "fsr")) {
+ if (!strcmp(src, "fsr"))
+ v &= ~OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_FSX;
+ else if (!strcmp(src, "fsx"))
+ v |= OMAP4_CONTROL_MCBSPLP_ALBCTRLRX_FSX;
+ else
+ return -EINVAL;
+ } else {
+ return -EINVAL;
+ }
+
+ omap4_ctrl_pad_writel(v, OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_MCBSPLP);
+
+ return 0;
+}
+
+/* McBSP CLKS source switching function */
+static int omap2_mcbsp_set_clk_src(struct device *dev, struct clk *clk,
+ const char *src)
+{
+ struct clk *fck_src;
+ char *fck_src_name;
+ int r;
+
+ if (!strcmp(src, "clks_ext"))
+ fck_src_name = "pad_fck";
+ else if (!strcmp(src, "clks_fclk"))
+ fck_src_name = "prcm_fck";
+ else
+ return -EINVAL;
+
+ fck_src = clk_get(dev, fck_src_name);
+ if (IS_ERR_OR_NULL(fck_src)) {
+ pr_err("omap-mcbsp: %s: could not clk_get() %s\n", "clks",
+ fck_src_name);
+ return -EINVAL;
+ }
+
+ pm_runtime_put_sync(dev);
+
+ r = clk_set_parent(clk, fck_src);
+ if (IS_ERR_VALUE(r)) {
+ pr_err("omap-mcbsp: %s: could not clk_set_parent() to %s\n",
+ "clks", fck_src_name);
+ clk_put(fck_src);
+ return -EINVAL;
+ }
+
+ pm_runtime_get_sync(dev);
+
+ clk_put(fck_src);
+
+ return 0;
+}
+
+static int omap3_enable_st_clock(unsigned int id, bool enable)
+{
+ unsigned int w;
+
+ /*
+ * Sidetone uses McBSP ICLK - which must not idle when sidetones
+ * are enabled or sidetones start sounding ugly.
+ */
+ w = omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
+ if (enable)
+ w &= ~(1 << (id - 2));
+ else
+ w |= 1 << (id - 2);
+ omap2_cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
+
+ return 0;
+}
+
+static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused)
+{
+ int id, count = 1;
+ char *name = "omap-mcbsp";
+ struct omap_hwmod *oh_device[2];
+ struct omap_mcbsp_platform_data *pdata = NULL;
+ struct platform_device *pdev;
+
+ sscanf(oh->name, "mcbsp%d", &id);
+
+ pdata = kzalloc(sizeof(struct omap_mcbsp_platform_data), GFP_KERNEL);
+ if (!pdata) {
+ pr_err("%s: No memory for mcbsp\n", __func__);
+ return -ENOMEM;
+ }
+
+ pdata->reg_step = 4;
+ if (oh->class->rev < MCBSP_CONFIG_TYPE2) {
+ pdata->reg_size = 2;
+ } else {
+ pdata->reg_size = 4;
+ pdata->has_ccr = true;
+ }
+ pdata->set_clk_src = omap2_mcbsp_set_clk_src;
+
+ /* On OMAP2/3 the McBSP1 port has 6 pin configuration */
+ if (id == 1 && oh->class->rev < MCBSP_CONFIG_TYPE4)
+ pdata->mux_signal = omap2_mcbsp1_mux_rx_clk;
+
+ /* On OMAP4 the McBSP4 port has 6 pin configuration */
+ if (id == 4 && oh->class->rev == MCBSP_CONFIG_TYPE4)
+ pdata->mux_signal = omap4_mcbsp4_mux_rx_clk;
+
+ if (oh->class->rev == MCBSP_CONFIG_TYPE3) {
+ if (id == 2)
+ /* The FIFO has 1024 + 256 locations */
+ pdata->buffer_size = 0x500;
+ else
+ /* The FIFO has 128 locations */
+ pdata->buffer_size = 0x80;
+ } else if (oh->class->rev == MCBSP_CONFIG_TYPE4) {
+ /* The FIFO has 128 locations for all instances */
+ pdata->buffer_size = 0x80;
+ }
+
+ if (oh->class->rev >= MCBSP_CONFIG_TYPE3)
+ pdata->has_wakeup = true;
+
+ oh_device[0] = oh;
+
+ if (oh->dev_attr) {
+ oh_device[1] = omap_hwmod_lookup((
+ (struct omap_mcbsp_dev_attr *)(oh->dev_attr))->sidetone);
+ pdata->enable_st_clock = omap3_enable_st_clock;
+ count++;
+ }
+ pdev = omap_device_build_ss(name, id, oh_device, count, pdata,
+ sizeof(*pdata), NULL, 0, false);
+ kfree(pdata);
+ if (IS_ERR(pdev)) {
+ pr_err("%s: Can't build omap_device for %s:%s.\n", __func__,
+ name, oh->name);
+ return PTR_ERR(pdev);
+ }
+ return 0;
+}
+
+static int __init omap2_mcbsp_init(void)
+{
+ omap_hwmod_for_each_by_class("mcbsp", omap_init_mcbsp, NULL);
+
+ return 0;
+}
+arch_initcall(omap2_mcbsp_init);