Merge branch 'next' of git://github.com/kernelslacker/cpufreq
[pandora-kernel.git] / arch / arm / plat-omap / mcbsp.c
index 3ad536e..4b15cd7 100644 (file)
 #include <plat/mcbsp.h>
 #include <linux/pm_runtime.h>
 
-/* XXX These "sideways" includes are a sign that something is wrong */
-#include "../mach-omap2/cm2xxx_3xxx.h"
-#include "../mach-omap2/cm-regbits-34xx.h"
-
 struct omap_mcbsp **mcbsp_ptr;
 int omap_mcbsp_count;
 
+#define omap_mcbsp_check_valid_id(id)  (id < omap_mcbsp_count)
+#define id_to_mcbsp_ptr(id)            mcbsp_ptr[id];
+
 static void omap_mcbsp_write(struct omap_mcbsp *mcbsp, u16 reg, u32 val)
 {
        void __iomem *addr = mcbsp->io_base + reg * mcbsp->pdata->reg_step;
@@ -59,7 +58,6 @@ static int omap_mcbsp_read(struct omap_mcbsp *mcbsp, u16 reg, bool from_cache)
        }
 }
 
-#ifdef CONFIG_ARCH_OMAP3
 static void omap_mcbsp_st_write(struct omap_mcbsp *mcbsp, u16 reg, u32 val)
 {
        __raw_writel(val, mcbsp->st_data->io_base_st + reg);
@@ -69,7 +67,6 @@ static int omap_mcbsp_st_read(struct omap_mcbsp *mcbsp, u16 reg)
 {
        return __raw_readl(mcbsp->st_data->io_base_st + reg);
 }
-#endif
 
 #define MCBSP_READ(mcbsp, reg) \
                omap_mcbsp_read(mcbsp, OMAP_MCBSP_REG_##reg, 0)
@@ -252,18 +249,12 @@ int omap_mcbsp_dma_reg_params(unsigned int id, unsigned int stream)
 }
 EXPORT_SYMBOL(omap_mcbsp_dma_reg_params);
 
-#ifdef CONFIG_ARCH_OMAP3
 static void omap_st_on(struct omap_mcbsp *mcbsp)
 {
        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);
-       w &= ~(1 << (mcbsp->id - 2));
-       omap2_cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
+       if (mcbsp->pdata->enable_st_clock)
+               mcbsp->pdata->enable_st_clock(mcbsp->id, 1);
 
        /* Enable McBSP Sidetone */
        w = MCBSP_READ(mcbsp, SSELCR);
@@ -284,9 +275,8 @@ static void omap_st_off(struct omap_mcbsp *mcbsp)
        w = MCBSP_READ(mcbsp, SSELCR);
        MCBSP_WRITE(mcbsp, SSELCR, w & ~(SIDETONEEN));
 
-       w = omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
-       w |= 1 << (mcbsp->id - 2);
-       omap2_cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
+       if (mcbsp->pdata->enable_st_clock)
+               mcbsp->pdata->enable_st_clock(mcbsp->id, 0);
 }
 
 static void omap_st_fir_write(struct omap_mcbsp *mcbsp, s16 *fir)
@@ -492,11 +482,6 @@ int omap_st_is_enabled(unsigned int id)
 }
 EXPORT_SYMBOL(omap_st_is_enabled);
 
-#else
-static inline void omap_st_start(struct omap_mcbsp *mcbsp) {}
-static inline void omap_st_stop(struct omap_mcbsp *mcbsp) {}
-#endif
-
 /*
  * omap_mcbsp_set_rx_threshold configures the transmit threshold in words.
  * The threshold parameter is 1 based, and it is converted (threshold - 1)
@@ -812,7 +797,7 @@ void omap_mcbsp_start(unsigned int id, int tx, int rx)
        }
        mcbsp = id_to_mcbsp_ptr(id);
 
-       if (cpu_is_omap34xx())
+       if (mcbsp->st_data)
                omap_st_start(mcbsp);
 
        /* Only enable SRG, if McBSP is master */
@@ -907,37 +892,71 @@ void omap_mcbsp_stop(unsigned int id, int tx, int rx)
                MCBSP_WRITE(mcbsp, SPCR2, w & ~(1 << 6));
        }
 
-       if (cpu_is_omap34xx())
+       if (mcbsp->st_data)
                omap_st_stop(mcbsp);
 }
 EXPORT_SYMBOL(omap_mcbsp_stop);
 
-/*
- * The following functions are only required on an OMAP1-only build.
- * mach-omap2/mcbsp.c contains the real functions
- */
-#ifndef CONFIG_ARCH_OMAP2PLUS
 int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id)
 {
-       WARN(1, "%s: should never be called on an OMAP1-only kernel\n",
-            __func__);
-       return -EINVAL;
+       struct omap_mcbsp *mcbsp;
+       const char *src;
+
+       if (!omap_mcbsp_check_valid_id(id)) {
+               pr_err("%s: Invalid id (%d)\n", __func__, id + 1);
+               return -EINVAL;
+       }
+       mcbsp = id_to_mcbsp_ptr(id);
+
+       if (fck_src_id == MCBSP_CLKS_PAD_SRC)
+               src = "clks_ext";
+       else if (fck_src_id == MCBSP_CLKS_PRCM_SRC)
+               src = "clks_fclk";
+       else
+               return -EINVAL;
+
+       if (mcbsp->pdata->set_clk_src)
+               return mcbsp->pdata->set_clk_src(mcbsp->dev, mcbsp->fclk, src);
+       else
+               return -EINVAL;
 }
+EXPORT_SYMBOL(omap2_mcbsp_set_clks_src);
 
 void omap2_mcbsp1_mux_clkr_src(u8 mux)
 {
-       WARN(1, "%s: should never be called on an OMAP1-only kernel\n",
-            __func__);
-       return;
+       struct omap_mcbsp *mcbsp;
+       const char *src;
+
+       if (mux == CLKR_SRC_CLKR)
+               src = "clkr";
+       else if (mux == CLKR_SRC_CLKX)
+               src = "clkx";
+       else
+               return;
+
+       mcbsp = id_to_mcbsp_ptr(0);
+       if (mcbsp->pdata->mux_signal)
+               mcbsp->pdata->mux_signal(mcbsp->dev, "clkr", src);
 }
+EXPORT_SYMBOL(omap2_mcbsp1_mux_clkr_src);
 
 void omap2_mcbsp1_mux_fsr_src(u8 mux)
 {
-       WARN(1, "%s: should never be called on an OMAP1-only kernel\n",
-            __func__);
-       return;
+       struct omap_mcbsp *mcbsp;
+       const char *src;
+
+       if (mux == FSR_SRC_FSR)
+               src = "fsr";
+       else if (mux == FSR_SRC_FSX)
+               src = "fsx";
+       else
+               return;
+
+       mcbsp = id_to_mcbsp_ptr(0);
+       if (mcbsp->pdata->mux_signal)
+               mcbsp->pdata->mux_signal(mcbsp->dev, "fsr", src);
 }
-#endif
+EXPORT_SYMBOL(omap2_mcbsp1_mux_fsr_src);
 
 #define max_thres(m)                   (mcbsp->pdata->buffer_size)
 #define valid_threshold(m, val)                ((val) <= max_thres(m))
@@ -1040,7 +1059,6 @@ static const struct attribute_group additional_attr_group = {
        .attrs = (struct attribute **)additional_attrs,
 };
 
-#ifdef CONFIG_ARCH_OMAP3
 static ssize_t st_taps_show(struct device *dev,
                            struct device_attribute *attr, char *buf)
 {
@@ -1108,10 +1126,9 @@ static const struct attribute_group sidetone_attr_group = {
        .attrs = (struct attribute **)sidetone_attrs,
 };
 
-static int __devinit omap_st_add(struct omap_mcbsp *mcbsp)
+static int __devinit omap_st_add(struct omap_mcbsp *mcbsp,
+                                struct resource *res)
 {
-       struct platform_device *pdev;
-       struct resource *res;
        struct omap_mcbsp_st_data *st_data;
        int err;
 
@@ -1121,9 +1138,6 @@ static int __devinit omap_st_add(struct omap_mcbsp *mcbsp)
                goto err1;
        }
 
-       pdev = container_of(mcbsp->dev, struct platform_device, dev);
-
-       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sidetone");
        st_data->io_base_st = ioremap(res->start, resource_size(res));
        if (!st_data->io_base_st) {
                err = -ENOMEM;
@@ -1150,32 +1164,10 @@ static void __devexit omap_st_remove(struct omap_mcbsp *mcbsp)
 {
        struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
 
-       if (st_data) {
-               sysfs_remove_group(&mcbsp->dev->kobj, &sidetone_attr_group);
-               iounmap(st_data->io_base_st);
-               kfree(st_data);
-       }
-}
-
-static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp)
-{
-       if (cpu_is_omap34xx())
-               if (mcbsp->id == 2 || mcbsp->id == 3)
-                       if (omap_st_add(mcbsp))
-                               dev_warn(mcbsp->dev,
-                                "Unable to create sidetone controls\n");
-}
-
-static inline void __devexit omap34xx_device_exit(struct omap_mcbsp *mcbsp)
-{
-       if (cpu_is_omap34xx())
-               if (mcbsp->id == 2 || mcbsp->id == 3)
-                       omap_st_remove(mcbsp);
+       sysfs_remove_group(&mcbsp->dev->kobj, &sidetone_attr_group);
+       iounmap(st_data->io_base_st);
+       kfree(st_data);
 }
-#else
-static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp) {}
-static inline void __devexit omap34xx_device_exit(struct omap_mcbsp *mcbsp) {}
-#endif /* CONFIG_ARCH_OMAP3 */
 
 /*
  * McBSP1 and McBSP3 are directly mapped on 1610 and 1510.
@@ -1301,11 +1293,22 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
                mcbsp->max_rx_thres = -EINVAL;
        }
 
-       /* Initialize mcbsp properties for OMAP34XX if needed / applicable */
-       omap34xx_device_init(mcbsp);
+       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sidetone");
+       if (res) {
+               ret = omap_st_add(mcbsp, res);
+               if (ret) {
+                       dev_err(mcbsp->dev,
+                               "Unable to create sidetone controls\n");
+                       goto err_st;
+               }
+       }
 
        return 0;
 
+err_st:
+       if (mcbsp->pdata->buffer_size)
+               sysfs_remove_group(&mcbsp->dev->kobj,
+                                  &additional_attr_group);
 err_thres:
        clk_put(mcbsp->fclk);
 err_res:
@@ -1331,7 +1334,8 @@ static int __devexit omap_mcbsp_remove(struct platform_device *pdev)
                        sysfs_remove_group(&mcbsp->dev->kobj,
                                           &additional_attr_group);
 
-               omap34xx_device_exit(mcbsp);
+               if (mcbsp->st_data)
+                       omap_st_remove(mcbsp);
 
                clk_put(mcbsp->fclk);