Merge branch 'rmobile/mmcif' into rmobile-latest

[pandora-kernel.git] / arch / arm / mach-shmobile / board-ap4evb.c

diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
index 9d96ad4..5b07952 100644 (file)
--- a/arch/arm/mach-shmobile/board-ap4evb.c
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -577,38 +577,127 @@ static struct platform_device *qhd_devices[] __initdata = {
 
 /* FSI */
 #define IRQ_FSI                evt2irq(0x1840)
+static int __fsi_set_rate(struct clk *clk, long rate, int enable)
+{
+       int ret = 0;
+
+       if (rate <= 0)
+               return ret;
+
+       if (enable) {
+               ret = clk_set_rate(clk, rate);
+               if (0 == ret)
+                       ret = clk_enable(clk);
+       } else {
+               clk_disable(clk);
+       }
+
+       return ret;
+}
+
+static int __fsi_set_round_rate(struct clk *clk, long rate, int enable)
+{
+       return __fsi_set_rate(clk, clk_round_rate(clk, rate), enable);
+}
 
-static int fsi_set_rate(int is_porta, int rate)
+static int fsi_ak4642_set_rate(struct device *dev, int rate, int enable)
+{
+       struct clk *fsia_ick;
+       struct clk *fsiack;
+       int ret = -EIO;
+
+       fsia_ick = clk_get(dev, "icka");
+       if (IS_ERR(fsia_ick))
+               return PTR_ERR(fsia_ick);
+
+       /*
+        * FSIACK is connected to AK4642,
+        * and use external clock pin from it.
+        * it is parent of fsia_ick now.
+        */
+       fsiack = clk_get_parent(fsia_ick);
+       if (!fsiack)
+               goto fsia_ick_out;
+
+       /*
+        * we get 1/1 divided clock by setting same rate to fsiack and fsia_ick
+        *
+        ** FIXME **
+        * Because the freq_table of external clk (fsiack) are all 0,
+        * the return value of clk_round_rate became 0.
+        * So, it use __fsi_set_rate here.
+        */
+       ret = __fsi_set_rate(fsiack, rate, enable);
+       if (ret < 0)
+               goto fsiack_out;
+
+       ret = __fsi_set_round_rate(fsia_ick, rate, enable);
+       if ((ret < 0) && enable)
+               __fsi_set_round_rate(fsiack, rate, 0); /* disable FSI ACK */
+
+fsiack_out:
+       clk_put(fsiack);
+
+fsia_ick_out:
+       clk_put(fsia_ick);
+
+       return 0;
+}
+
+static int fsi_hdmi_set_rate(struct device *dev, int rate, int enable)
 {
        struct clk *fsib_clk;
        struct clk *fdiv_clk = &sh7372_fsidivb_clk;
+       long fsib_rate = 0;
+       long fdiv_rate = 0;
+       int ackmd_bpfmd;
        int ret;
 
-       /* set_rate is not needed if port A */
-       if (is_porta)
-               return 0;
-
-       fsib_clk = clk_get(NULL, "fsib_clk");
-       if (IS_ERR(fsib_clk))
-               return -EINVAL;
-
        switch (rate) {
        case 44100:
-               clk_set_rate(fsib_clk, clk_round_rate(fsib_clk, 11283000));
-               ret = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
+               fsib_rate       = rate * 256;
+               ackmd_bpfmd     = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
                break;
        case 48000:
-               clk_set_rate(fsib_clk, clk_round_rate(fsib_clk, 85428000));
-               clk_set_rate(fdiv_clk, clk_round_rate(fdiv_clk, 12204000));
-               ret = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
+               fsib_rate       = 85428000; /* around 48kHz x 256 x 7 */
+               fdiv_rate       = rate * 256;
+               ackmd_bpfmd     = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
                break;
        default:
                pr_err("unsupported rate in FSI2 port B\n");
-               ret = -EINVAL;
-               break;
+               return -EINVAL;
        }
 
+       /* FSI B setting */
+       fsib_clk = clk_get(dev, "ickb");
+       if (IS_ERR(fsib_clk))
+               return -EIO;
+
+       ret = __fsi_set_round_rate(fsib_clk, fsib_rate, enable);
        clk_put(fsib_clk);
+       if (ret < 0)
+               return ret;
+
+       /* FSI DIV setting */
+       ret = __fsi_set_round_rate(fdiv_clk, fdiv_rate, enable);
+       if (ret < 0) {
+               /* disable FSI B */
+               if (enable)
+                       __fsi_set_round_rate(fsib_clk, fsib_rate, 0);
+               return ret;
+       }
+
+       return ackmd_bpfmd;
+}
+
+static int fsi_set_rate(struct device *dev, int is_porta, int rate, int enable)
+{
+       int ret;
+
+       if (is_porta)
+               ret = fsi_ak4642_set_rate(dev, rate, enable);
+       else
+               ret = fsi_hdmi_set_rate(dev, rate, enable);
 
        return ret;
 }
@@ -890,6 +979,11 @@ static int __init hdmi_init_pm_clock(void)
                goto out;
        }
 
+       ret = clk_enable(&sh7372_pllc2_clk);
+       if (ret < 0) {
+               pr_err("Cannot enable pllc2 clock\n");
+               goto out;
+       }
        pr_debug("PLLC2 set frequency %lu\n", rate);
 
        ret = clk_set_parent(hdmi_ick, &sh7372_pllc2_clk);
@@ -906,23 +1000,11 @@ out:
 
 device_initcall(hdmi_init_pm_clock);
 
-#define FSIACK_DUMMY_RATE 48000
 static int __init fsi_init_pm_clock(void)
 {
        struct clk *fsia_ick;
        int ret;
 
-       /*
-        * FSIACK is connected to AK4642,
-        * and the rate is depend on playing sound rate.
-        * So, set dummy rate (= 48k) here
-        */
-       ret = clk_set_rate(&sh7372_fsiack_clk, FSIACK_DUMMY_RATE);
-       if (ret < 0) {
-               pr_err("Cannot set FSIACK dummy rate: %d\n", ret);
-               return ret;
-       }
-
        fsia_ick = clk_get(&fsi_device.dev, "icka");
        if (IS_ERR(fsia_ick)) {
                ret = PTR_ERR(fsia_ick);
@@ -931,16 +1013,9 @@ static int __init fsi_init_pm_clock(void)
        }
 
        ret = clk_set_parent(fsia_ick, &sh7372_fsiack_clk);
-       if (ret < 0) {
-               pr_err("Cannot set FSI-A parent: %d\n", ret);
-               goto out;
-       }
-
-       ret = clk_set_rate(fsia_ick, FSIACK_DUMMY_RATE);
        if (ret < 0)
-               pr_err("Cannot set FSI-A rate: %d\n", ret);
+               pr_err("Cannot set FSI-A parent: %d\n", ret);
 
-out:
        clk_put(fsia_ick);
 
        return ret;