@@ -369,12 +369,93 @@ static struct platform_device leds_device = {
/* 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_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_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 = -EINVAL;
+
+ return ret;
+}
+
static struct sh_fsi_platform_info fsi_info = {
.porta_flags = SH_FSI_BRS_INV |
SH_FSI_OUT_SLAVE_MODE |
SH_FSI_IN_SLAVE_MODE |
SH_FSI_OFMT(PCM) |
SH_FSI_IFMT(PCM),
+
+ .set_rate = fsi_set_rate,
};
static struct resource fsi_resources[] = {