MIPS: TXx9: Add ACLC support

Add platform support for ACLC of TXx9 SoCs.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

8 files changed, 112 insertions, 2 deletions

diff --git a/arch/mips/txx9/Kconfig b/arch/mips/txx9/Kconfig
index 0db7cf38ed8b..852ae4bb7a85 100644
--- a/arch/mips/txx9/Kconfig
+++ b/arch/mips/txx9/Kconfig
@@ -69,6 +69,7 @@ config SOC_TX4927
         select IRQ_TXX9
         select PCI_TX4927
         select GPIO_TXX9
+        select HAS_TXX9_ACLC
 
 config SOC_TX4938
         bool
@@ -78,6 +79,7 @@ config SOC_TX4938
         select IRQ_TXX9
         select PCI_TX4927
         select GPIO_TXX9
+        select HAS_TXX9_ACLC
 
 config SOC_TX4939
         bool
@@ -85,6 +87,7 @@ config SOC_TX4939
         select HAS_TXX9_SERIAL
         select HW_HAS_PCI
         select PCI_TX4927
+        select HAS_TXX9_ACLC
 
 config TXX9_7SEGLED
         bool
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 369d8637217d..7f9101257615 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -876,3 +876,39 @@ void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
         }
 #endif
 }
+
+void __init txx9_aclc_init(unsigned long baseaddr, int irq,
+                           unsigned int dmac_id,
+                           unsigned int dma_chan_out,
+                           unsigned int dma_chan_in)
+{
+#if defined(CONFIG_SND_SOC_TXX9ACLC) || \
+        defined(CONFIG_SND_SOC_TXX9ACLC_MODULE)
+        unsigned int dma_base = dmac_id * TXX9_DMA_MAX_NR_CHANNELS;
+        struct resource res[] = {
+                {
+                        .start = baseaddr,
+                        .end = baseaddr + 0x100 - 1,
+                        .flags = IORESOURCE_MEM,
+                }, {
+                        .start = irq,
+                        .flags = IORESOURCE_IRQ,
+                }, {
+                        .name = "txx9dmac-chan",
+                        .start = dma_base + dma_chan_out,
+                        .flags = IORESOURCE_DMA,
+                }, {
+                        .name = "txx9dmac-chan",
+                        .start = dma_base + dma_chan_in,
+                        .flags = IORESOURCE_DMA,
+                }
+        };
+        struct platform_device *pdev =
+                platform_device_alloc("txx9aclc-ac97", -1);
+
+        if (!pdev ||
+            platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
+            platform_device_add(pdev))
+                platform_device_put(pdev);
+#endif
+}
diff --git a/arch/mips/txx9/generic/setup_tx4927.c b/arch/mips/txx9/generic/setup_tx4927.c
index 6b681cd7f8fb..3418b2a90f7e 100644
--- a/arch/mips/txx9/generic/setup_tx4927.c
+++ b/arch/mips/txx9/generic/setup_tx4927.c
@@ -265,6 +265,49 @@ void __init tx4927_dmac_init(int memcpy_chan)
                        TXX9_IRQ_BASE + TX4927_IR_DMA(0), &plat_data);
 }
 
+void __init tx4927_aclc_init(unsigned int dma_chan_out,
+                             unsigned int dma_chan_in)
+{
+        u64 pcfg = __raw_readq(&tx4927_ccfgptr->pcfg);
+        __u64 dmasel_mask = 0, dmasel = 0;
+        unsigned long flags;
+
+        if (!(pcfg & TX4927_PCFG_SEL2))
+                return;
+        /* setup DMASEL (playback:ACLC ch0, capture:ACLC ch1) */
+        switch (dma_chan_out) {
+        case 0:
+                dmasel_mask |= TX4927_PCFG_DMASEL0_MASK;
+                dmasel |= TX4927_PCFG_DMASEL0_ACL0;
+                break;
+        case 2:
+                dmasel_mask |= TX4927_PCFG_DMASEL2_MASK;
+                dmasel |= TX4927_PCFG_DMASEL2_ACL0;
+                break;
+        default:
+                return;
+        }
+        switch (dma_chan_in) {
+        case 1:
+                dmasel_mask |= TX4927_PCFG_DMASEL1_MASK;
+                dmasel |= TX4927_PCFG_DMASEL1_ACL1;
+                break;
+        case 3:
+                dmasel_mask |= TX4927_PCFG_DMASEL3_MASK;
+                dmasel |= TX4927_PCFG_DMASEL3_ACL1;
+                break;
+        default:
+                return;
+        }
+        local_irq_save(flags);
+        txx9_clear64(&tx4927_ccfgptr->pcfg, dmasel_mask);
+        txx9_set64(&tx4927_ccfgptr->pcfg, dmasel);
+        local_irq_restore(flags);
+        txx9_aclc_init(TX4927_ACLC_REG & 0xfffffffffULL,
+                       TXX9_IRQ_BASE + TX4927_IR_ACLC,
+                       0, dma_chan_out, dma_chan_in);
+}
+
 static void __init tx4927_stop_unused_modules(void)
 {
         __u64 pcfg, rst = 0, ckd = 0;
diff --git a/arch/mips/txx9/generic/setup_tx4938.c b/arch/mips/txx9/generic/setup_tx4938.c
index b2b85293cd44..4dfdb52e8665 100644
--- a/arch/mips/txx9/generic/setup_tx4938.c
+++ b/arch/mips/txx9/generic/setup_tx4938.c
@@ -414,6 +414,17 @@ void __init tx4938_dmac_init(int memcpy_chan0, int memcpy_chan1)
         }
 }
 
+void __init tx4938_aclc_init(void)
+{
+        u64 pcfg = __raw_readq(&tx4938_ccfgptr->pcfg);
+
+        if ((pcfg & TX4938_PCFG_SEL2) &&
+            !(pcfg & TX4938_PCFG_ETH0_SEL))
+                txx9_aclc_init(TX4938_ACLC_REG & 0xfffffffffULL,
+                               TXX9_IRQ_BASE + TX4938_IR_ACLC,
+                               1, 0, 1);
+}
+
 static void __init tx4938_stop_unused_modules(void)
 {
         __u64 pcfg, rst = 0, ckd = 0;
diff --git a/arch/mips/txx9/generic/setup_tx4939.c b/arch/mips/txx9/generic/setup_tx4939.c
index 98effef64fdb..71396863f54e 100644
--- a/arch/mips/txx9/generic/setup_tx4939.c
+++ b/arch/mips/txx9/generic/setup_tx4939.c
@@ -485,6 +485,15 @@ void __init tx4939_dmac_init(int memcpy_chan0, int memcpy_chan1)
         }
 }
 
+void __init tx4939_aclc_init(void)
+{
+        u64 pcfg = __raw_readq(&tx4939_ccfgptr->pcfg);
+
+        if ((pcfg & TX4939_PCFG_I2SMODE_MASK) == TX4939_PCFG_I2SMODE_ACLC)
+                txx9_aclc_init(TX4939_ACLC_REG & 0xfffffffffULL,
+                               TXX9_IRQ_BASE + TX4939_IR_ACLC, 1, 0, 1);
+}
+
 static void __init tx4939_stop_unused_modules(void)
 {
         __u64 pcfg, rst = 0, ckd = 0;
diff --git a/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index 332cdbc7fcef..ee468eaee4f7 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -337,10 +337,14 @@ static void __init rbtx4927_device_init(void)
         rbtx4927_ne_init();
         tx4927_wdt_init();
         rbtx4927_mtd_init();
-        if (TX4927_REV_PCODE() == 0x4927)
+        if (TX4927_REV_PCODE() == 0x4927) {
                 tx4927_dmac_init(2);
-        else
+                tx4927_aclc_init(0, 1);
+        } else {
                 tx4938_dmac_init(0, 2);
+                tx4938_aclc_init();
+        }
+        platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
         txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL);
         rbtx4927_gpioled_init();
 }
diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c
index 37c5e3d20287..8da66e956ee6 100644
--- a/arch/mips/txx9/rbtx4938/setup.c
+++ b/arch/mips/txx9/rbtx4938/setup.c
@@ -356,6 +356,8 @@ static void __init rbtx4938_device_init(void)
         tx4938_ndfmc_init(10, 35);
         tx4938_ata_init(RBTX4938_IRQ_IOC_ATA, 0, 1);
         tx4938_dmac_init(0, 2);
+        tx4938_aclc_init();
+        platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
         txx9_iocled_init(RBTX4938_LED_ADDR - IO_BASE, -1, 8, 1, "green", NULL);
 }
 
diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c
index 91f2ec8fa273..d5ad5abb80da 100644
--- a/arch/mips/txx9/rbtx4939/setup.c
+++ b/arch/mips/txx9/rbtx4939/setup.c
@@ -499,6 +499,8 @@ static void __init rbtx4939_device_init(void)
         tx4939_ata_init();
         tx4939_rtc_init();
         tx4939_dmac_init(0, 2);
+        tx4939_aclc_init();
+        platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
 }
 
 static void __init rbtx4939_setup(void)