summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2011-01-06 02:44:15 +0000
committerPaul Mundt <lethal@linux-sh.org>2011-01-06 12:17:18 +0900
commit98d27b8abf413a310df6676f7d2128ada1cccc08 (patch)
tree5fc2a5cc95b1e3188f341194c2d79045b3cb690c /arch
parent12c4309b78854ba117ea38a9178018591abd16ab (diff)
ARM: mach-shmobile: mackerel: Add HDMI sound support
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-shmobile/board-mackerel.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index c7d378b57cfc..6a5ce9a0dcf3 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -373,6 +373,7 @@ static struct platform_device hdmi_lcdc_device = {
static struct sh_mobile_hdmi_info hdmi_info = {
.lcd_chan = &hdmi_lcdc_info.ch[0],
.lcd_dev = &hdmi_lcdc_device.dev,
+ .flags = HDMI_SND_SRC_SPDIF,
};
static struct resource hdmi_resources[] = {
@@ -534,12 +535,93 @@ static struct platform_device leds_device = {
/* FSI */
#define IRQ_FSI evt2irq(0x1840)
+static int __fsi_set_round_rate(struct clk *clk, long rate, int enable)
+{
+ int ret;
+
+ if (rate <= 0)
+ return 0;
+
+ if (!enable) {
+ clk_disable(clk);
+ return 0;
+ }
+
+ ret = clk_set_rate(clk, clk_round_rate(clk, rate));
+ if (ret < 0)
+ return ret;
+
+ return clk_enable(clk);
+}
+
+static int fsi_set_rate(struct device *dev, int is_porta, 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;
+
+ /* FSIA is slave mode. nothing to do here */
+ if (is_porta)
+ return 0;
+
+ /* clock start */
+ switch (rate) {
+ case 44100:
+ fsib_rate = rate * 256;
+ ackmd_bpfmd = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
+ break;
+ case 48000:
+ 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");
+ return -EINVAL;
+ }
+
+ /* FSI B setting */
+ fsib_clk = clk_get(dev, "ickb");
+ if (IS_ERR(fsib_clk))
+ return -EIO;
+
+ /* fsib */
+ ret = __fsi_set_round_rate(fsib_clk, fsib_rate, enable);
+ if (ret < 0)
+ goto fsi_set_rate_end;
+
+ /* FSI DIV */
+ 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);
+ goto fsi_set_rate_end;
+ }
+
+ ret = ackmd_bpfmd;
+
+fsi_set_rate_end:
+ clk_put(fsib_clk);
+ 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),
+
+ .portb_flags = SH_FSI_BRS_INV |
+ SH_FSI_BRM_INV |
+ SH_FSI_LRS_INV |
+ SH_FSI_OFMT(SPDIF),
+
+ .set_rate = fsi_set_rate,
};
static struct resource fsi_resources[] = {
@@ -919,9 +1001,11 @@ static void __init mackerel_map_io(void)
#define GPIO_PORT9CR 0xE6051009
#define GPIO_PORT10CR 0xE605100A
#define SRCR4 0xe61580bc
+#define USCCR1 0xE6058144
static void __init mackerel_init(void)
{
u32 srcr4;
+ struct clk *clk;
sh7372_pinmux_init();
@@ -993,6 +1077,17 @@ static void __init mackerel_init(void)
intc_set_priority(IRQ_FSI, 3); /* irq priority FSI(3) > SMSC911X(2) */
+ /* setup FSI2 port B (HDMI) */
+ gpio_request(GPIO_FN_FSIBCK, NULL);
+ __raw_writew(__raw_readw(USCCR1) & ~(1 << 6), USCCR1); /* use SPDIF */
+
+ /* set SPU2 clock to 119.6 MHz */
+ clk = clk_get(NULL, "spu_clk");
+ if (!IS_ERR(clk)) {
+ clk_set_rate(clk, clk_round_rate(clk, 119600000));
+ clk_put(clk);
+ }
+
/* enable Keypad */
gpio_request(GPIO_FN_IRQ9_42, NULL);
set_irq_type(IRQ9, IRQ_TYPE_LEVEL_HIGH);