sh: add FSI driver support for ms7724se

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/arch/sh/boards/mach-se/7724/setup.c b/arch/sh/boards/mach-se/7724/setup.c
index 00973e0f8c63..e78c3be8ad2f 100644
--- a/arch/sh/boards/mach-se/7724/setup.c
+++ b/arch/sh/boards/mach-se/7724/setup.c
@@ -22,6 +22,7 @@
 #include <linux/usb/r8a66597.h>
 #include <video/sh_mobile_lcdc.h>
 #include <media/sh_mobile_ceu.h>
+#include <sound/sh_fsi.h>
 #include <asm/io.h>
 #include <asm/heartbeat.h>
 #include <asm/sh_eth.h>
@@ -255,6 +256,65 @@ static struct platform_device ceu1_device = {
         },
 };
 
+/* FSI */
+/*
+ * FSI-A use external clock which came from ak464x.
+ * So, we should change parent of fsi
+ */
+#define FCLKACR         0xa4150008
+static void fsimck_init(struct clk *clk)
+{
+        u32 status = ctrl_inl(clk->enable_reg);
+
+        /* use external clock */
+        status &= ~0x000000ff;
+        status |= 0x00000080;
+        ctrl_outl(status, clk->enable_reg);
+}
+
+static struct clk_ops fsimck_clk_ops = {
+        .init = fsimck_init,
+};
+
+static struct clk fsimcka_clk = {
+        .name           = "fsimcka_clk",
+        .id             = -1,
+        .ops            = &fsimck_clk_ops,
+        .enable_reg     = (void __iomem *)FCLKACR,
+        .rate           = 0, /* unknown */
+};
+
+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),
+};
+
+static struct resource fsi_resources[] = {
+        [0] = {
+                .name   = "FSI",
+                .start  = 0xFE3C0000,
+                .end    = 0xFE3C021d,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = 108,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device fsi_device = {
+        .name           = "sh_fsi",
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(fsi_resources),
+        .resource       = fsi_resources,
+        .dev    = {
+                .platform_data  = &fsi_info,
+        },
+};
+
 /* KEYSC in SoC (Needs SW33-2 set to ON) */
 static struct sh_keysc_info keysc_info = {
         .mode = SH_KEYSC_MODE_1,
@@ -399,6 +459,7 @@ static struct platform_device *ms7724se_devices[] __initdata = {
         &sh_eth_device,
         &sh7724_usb0_host_device,
         &sh7724_usb1_gadget_device,
+        &fsi_device,
 };
 
 #define EEPROM_OP   0xBA206000
@@ -466,11 +527,13 @@ static void __init sh_eth_init(void)
 static int __init devices_setup(void)
 {
         u16 sw = ctrl_inw(SW4140); /* select camera, monitor */
+        struct clk *fsia_clk;
 
         /* Reset Release */
         ctrl_outw(ctrl_inw(FPGA_OUT) &
                   ~((1 << 1)  | /* LAN */
                     (1 << 6)  | /* VIDEO DAC */
+                    (1 << 7)  | /* AK4643 */
                     (1 << 12) | /* USB0 */
                     (1 << 14)), /* RMII */
                   FPGA_OUT);
@@ -609,6 +672,32 @@ static int __init devices_setup(void)
         gpio_request(GPIO_FN_KEYOUT1,     NULL);
         gpio_request(GPIO_FN_KEYOUT0,     NULL);
 
+        /* enable FSI */
+        gpio_request(GPIO_FN_FSIMCKB,    NULL);
+        gpio_request(GPIO_FN_FSIMCKA,    NULL);
+        gpio_request(GPIO_FN_FSIOASD,    NULL);
+        gpio_request(GPIO_FN_FSIIABCK,   NULL);
+        gpio_request(GPIO_FN_FSIIALRCK,  NULL);
+        gpio_request(GPIO_FN_FSIOABCK,   NULL);
+        gpio_request(GPIO_FN_FSIOALRCK,  NULL);
+        gpio_request(GPIO_FN_CLKAUDIOAO, NULL);
+        gpio_request(GPIO_FN_FSIIBSD,    NULL);
+        gpio_request(GPIO_FN_FSIOBSD,    NULL);
+        gpio_request(GPIO_FN_FSIIBBCK,   NULL);
+        gpio_request(GPIO_FN_FSIIBLRCK,  NULL);
+        gpio_request(GPIO_FN_FSIOBBCK,   NULL);
+        gpio_request(GPIO_FN_FSIOBLRCK,  NULL);
+        gpio_request(GPIO_FN_CLKAUDIOBO, NULL);
+        gpio_request(GPIO_FN_FSIIASD,    NULL);
+
+        /* change parent of FSI A */
+        fsia_clk = clk_get(NULL, "fsia_clk");
+        clk_register(&fsimcka_clk);
+        clk_set_parent(fsia_clk, &fsimcka_clk);
+        clk_set_rate(fsia_clk, 11000);
+        clk_set_rate(&fsimcka_clk, 11000);
+        clk_put(fsia_clk);
+
         /*
          * enable SH-Eth
          *