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OMAP: Fix McBSP spin_lock deadlock
[linux-2.6-omap-h63xx.git] / arch / arm / mach-omap2 / mcbsp.c
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index b40b29a2d791b8248891cc1976b9f2a6b3439c6b..661e5ab85760c8b6ef79c25c12d01b8dfb5003c2 100644 (file)
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -22,111 +22,7 @@
 #include <mach/cpu.h>
 #include <mach/mcbsp.h>
 
-struct mcbsp_internal_clk {
-       struct clk clk;
-       struct clk **childs;
-       int n_childs;
-};
-
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
-static void omap_mcbsp_clk_init(struct mcbsp_internal_clk *mclk)
-{
-       const char *clk_names[] = { "mcbsp_ick", "mcbsp_fck" };
-       int i;
-
-       mclk->n_childs = ARRAY_SIZE(clk_names);
-       mclk->childs = kzalloc(mclk->n_childs * sizeof(struct clk *),
-                               GFP_KERNEL);
-
-       for (i = 0; i < mclk->n_childs; i++) {
-               /* We fake a platform device to get correct device id */
-               struct platform_device pdev;
-
-               pdev.dev.bus = &platform_bus_type;
-               pdev.id = mclk->clk.id;
-               mclk->childs[i] = clk_get(&pdev.dev, clk_names[i]);
-               if (IS_ERR(mclk->childs[i]))
-                       printk(KERN_ERR "Could not get clock %s (%d).\n",
-                               clk_names[i], mclk->clk.id);
-       }
-}
-
-static int omap_mcbsp_clk_enable(struct clk *clk)
-{
-       struct mcbsp_internal_clk *mclk = container_of(clk,
-                                       struct mcbsp_internal_clk, clk);
-       int i;
-
-       for (i = 0; i < mclk->n_childs; i++)
-               clk_enable(mclk->childs[i]);
-       return 0;
-}
-
-static void omap_mcbsp_clk_disable(struct clk *clk)
-{
-       struct mcbsp_internal_clk *mclk = container_of(clk,
-                                       struct mcbsp_internal_clk, clk);
-       int i;
-
-       for (i = 0; i < mclk->n_childs; i++)
-               clk_disable(mclk->childs[i]);
-}
-
-static struct mcbsp_internal_clk omap_mcbsp_clks[] = {
-       {
-               .clk = {
-                       .name           = "mcbsp_clk",
-                       .id             = 1,
-                       .clkdm          = { .name = "virt_opp_clkdm" },
-                       .enable         = omap_mcbsp_clk_enable,
-                       .disable        = omap_mcbsp_clk_disable,
-               },
-       },
-       {
-               .clk = {
-                       .name           = "mcbsp_clk",
-                       .id             = 2,
-                       .clkdm          = { .name = "virt_opp_clkdm" },
-                       .enable         = omap_mcbsp_clk_enable,
-                       .disable        = omap_mcbsp_clk_disable,
-               },
-       },
-       {
-               .clk = {
-                       .name           = "mcbsp_clk",
-                       .id             = 3,
-                       .clkdm          = { .name = "virt_opp_clkdm" },
-                       .enable         = omap_mcbsp_clk_enable,
-                       .disable        = omap_mcbsp_clk_disable,
-               },
-       },
-       {
-               .clk = {
-                       .name           = "mcbsp_clk",
-                       .id             = 4,
-                       .clkdm          = { .name = "virt_opp_clkdm" },
-                       .enable         = omap_mcbsp_clk_enable,
-                       .disable        = omap_mcbsp_clk_disable,
-               },
-       },
-       {
-               .clk = {
-                       .name           = "mcbsp_clk",
-                       .id             = 5,
-                       .clkdm          = { .name = "virt_opp_clkdm" },
-                       .enable         = omap_mcbsp_clk_enable,
-                       .disable        = omap_mcbsp_clk_disable,
-               },
-       },
-};
-
-#define omap_mcbsp_clks_size   ARRAY_SIZE(omap_mcbsp_clks)
-#else
-#define omap_mcbsp_clks_size   0
-static struct mcbsp_internal_clk __initdata *omap_mcbsp_clks;
-static inline void omap_mcbsp_clk_init(struct clk *clk)
-{ }
-#endif
+const char *clk_names[] = { "mcbsp_ick", "mcbsp_fck" };
 
 static void omap2_mcbsp2_mux_setup(void)
 {
@@ -159,7 +55,8 @@ static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP24XX_MCBSP2_BASE,
@@ -168,7 +65,8 @@ static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
 };
 #define OMAP2420_MCBSP_PDATA_SZ                ARRAY_SIZE(omap2420_mcbsp_pdata)
@@ -186,7 +84,8 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP24XX_MCBSP2_BASE,
@@ -195,7 +94,8 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP2430_MCBSP3_BASE,
@@ -204,7 +104,8 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP2430_MCBSP4_BASE,
@@ -213,7 +114,8 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP2430_MCBSP5_BASE,
@@ -222,7 +124,8 @@ static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
 };
 #define OMAP2430_MCBSP_PDATA_SZ                ARRAY_SIZE(omap2430_mcbsp_pdata)
@@ -240,7 +143,8 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP1_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP1_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP34XX_MCBSP2_BASE,
@@ -249,7 +153,8 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP2_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP2_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP34XX_MCBSP3_BASE,
@@ -258,7 +163,8 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP3_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP3_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP34XX_MCBSP4_BASE,
@@ -267,7 +173,8 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP4_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP4_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
        {
                .phys_base      = OMAP34XX_MCBSP5_BASE,
@@ -276,7 +183,8 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
                .rx_irq         = INT_24XX_MCBSP5_IRQ_RX,
                .tx_irq         = INT_24XX_MCBSP5_IRQ_TX,
                .ops            = &omap2_mcbsp_ops,
-               .clk_name       = "mcbsp_clk",
+               .clk_names      = clk_names,
+               .num_clks       = 2,
        },
 };
 #define OMAP34XX_MCBSP_PDATA_SZ                ARRAY_SIZE(omap34xx_mcbsp_pdata)
@@ -287,14 +195,6 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
 
 static int __init omap2_mcbsp_init(void)
 {
-       int i;
-
-       for (i = 0; i < omap_mcbsp_clks_size; i++) {
-               /* Once we call clk_get inside init, we do not register it */
-               omap_mcbsp_clk_init(&omap_mcbsp_clks[i]);
-               clk_register(&omap_mcbsp_clks[i].clk);
-       }
-
        if (cpu_is_omap2420())
                omap_mcbsp_count = OMAP2420_MCBSP_PDATA_SZ;
        if (cpu_is_omap2430())
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