TI816X: Update common OMAP machine specific sources

This patch updates the common machine specific source files with support for
TI816X.

Signed-off-by: Hemant Pedanekar <hemantp@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

8 files changed, 104 insertions, 9 deletions

diff --git a/arch/arm/mach-omap2/clock3xxx_data.c b/arch/arm/mach-omap2/clock3xxx_data.c
index 403a4a1d3f9c..f14d986f0b5d 100644
--- a/arch/arm/mach-omap2/clock3xxx_data.c
+++ b/arch/arm/mach-omap2/clock3xxx_data.c
@@ -3471,6 +3471,9 @@ int __init omap3xxx_clk_init(void)
         } else if (cpu_is_omap3630()) {
                 cpu_mask = (RATE_IN_34XX | RATE_IN_36XX);
                 cpu_clkflg = CK_36XX;
+        } else if (cpu_is_ti816x()) {
+                cpu_mask = RATE_IN_TI816X;
+                cpu_clkflg = CK_TI816X;
         } else if (cpu_is_omap34xx()) {
                 if (omap_rev() == OMAP3430_REV_ES1_0) {
                         cpu_mask = RATE_IN_3430ES1;
@@ -3550,7 +3553,7 @@ int __init omap3xxx_clk_init(void)
         /*
          * Lock DPLL5 and put it in autoidle.
          */
-        if (omap_rev() >= OMAP3430_REV_ES2_0)
+        if (!cpu_is_ti816x() && (omap_rev() >= OMAP3430_REV_ES2_0))
                 omap3_clk_lock_dpll5();
 
         /* Avoid sleeping during omap3_core_dpll_m2_set_rate() */
diff --git a/arch/arm/mach-omap2/common.c b/arch/arm/mach-omap2/common.c
index 778929f7e92d..79fb948f8144 100644
--- a/arch/arm/mach-omap2/common.c
+++ b/arch/arm/mach-omap2/common.c
@@ -108,6 +108,27 @@ void __init omap3_map_io(void)
         omap2_set_globals_3xxx();
         omap34xx_map_common_io();
 }
+
+/*
+ * Adjust TAP register base such that omap3_check_revision accesses the correct
+ * TI816X register for checking device ID (it adds 0x204 to tap base while
+ * TI816X DEVICE ID register is at offset 0x600 from control base).
+ */
+#define TI816X_TAP_BASE         (TI816X_CTRL_BASE + \
+                                TI816X_CONTROL_DEVICE_ID - 0x204)
+
+static struct omap_globals ti816x_globals = {
+        .class  = OMAP343X_CLASS,
+        .tap    = OMAP2_L4_IO_ADDRESS(TI816X_TAP_BASE),
+        .ctrl   = TI816X_CTRL_BASE,
+        .prm    = TI816X_PRCM_BASE,
+        .cm     = TI816X_PRCM_BASE,
+};
+
+void __init omap2_set_globals_ti816x(void)
+{
+        __omap2_set_globals(&ti816x_globals);
+}
 #endif
 
 #if defined(CONFIG_ARCH_OMAP4)
diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h
index f0629ae04102..c2804c1c4efd 100644
--- a/arch/arm/mach-omap2/control.h
+++ b/arch/arm/mach-omap2/control.h
@@ -52,6 +52,9 @@
 #define OMAP343X_CONTROL_PADCONFS_WKUP  0xa00
 #define OMAP343X_CONTROL_GENERAL_WKUP   0xa60
 
+/* TI816X spefic control submodules */
+#define TI816X_CONTROL_DEVCONF          0x600
+
 /* Control register offsets - read/write with omap_ctrl_{read,write}{bwl}() */
 
 #define OMAP2_CONTROL_SYSCONFIG         (OMAP2_CONTROL_INTERFACE + 0x10)
@@ -241,6 +244,9 @@
 #define OMAP3_PADCONF_SAD2D_MSTANDBY   0x250
 #define OMAP3_PADCONF_SAD2D_IDLEACK    0x254
 
+/* TI816X CONTROL_DEVCONF register offsets */
+#define TI816X_CONTROL_DEVICE_ID        (TI816X_CONTROL_DEVCONF + 0x000)
+
 /*
  * REVISIT: This list of registers is not comprehensive - there are more
  * that should be added.
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 5f9086c65e48..5c25f1b55235 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -191,12 +191,19 @@ static void __init omap3_check_features(void)
         if (!cpu_is_omap3505() && !cpu_is_omap3517())
                 omap3_features |= OMAP3_HAS_IO_WAKEUP;
 
+        omap3_features |= OMAP3_HAS_SDRC;
+
         /*
          * TODO: Get additional info (where applicable)
          *       e.g. Size of L2 cache.
          */
 }
 
+static void __init ti816x_check_features(void)
+{
+        omap3_features = OMAP3_HAS_NEON;
+}
+
 static void __init omap3_check_revision(void)
 {
         u32 cpuid, idcode;
@@ -287,6 +294,20 @@ static void __init omap3_check_revision(void)
                         omap_chip.oc |= CHIP_IS_OMAP3630ES1_2;
                 }
                 break;
+        case 0xb81e:
+                omap_chip.oc = CHIP_IS_TI816X;
+
+                switch (rev) {
+                case 0:
+                        omap_revision = TI8168_REV_ES1_0;
+                        break;
+                case 1:
+                        omap_revision = TI8168_REV_ES1_1;
+                        break;
+                default:
+                        omap_revision =  TI8168_REV_ES1_1;
+                }
+                break;
         default:
                 /* Unknown default to latest silicon rev as default*/
                 omap_revision =  OMAP3630_REV_ES1_2;
@@ -372,6 +393,8 @@ static void __init omap3_cpuinfo(void)
                         /* Already set in omap3_check_revision() */
                         strcpy(cpu_name, "AM3505");
                 }
+        } else if (cpu_is_ti816x()) {
+                strcpy(cpu_name, "TI816X");
         } else if (omap3_has_iva() && omap3_has_sgx()) {
                 /* OMAP3430, OMAP3525, OMAP3515, OMAP3503 devices */
                 strcpy(cpu_name, "OMAP3430/3530");
@@ -386,7 +409,7 @@ static void __init omap3_cpuinfo(void)
                 strcpy(cpu_name, "OMAP3503");
         }
 
-        if (cpu_is_omap3630()) {
+        if (cpu_is_omap3630() || cpu_is_ti816x()) {
                 switch (rev) {
                 case OMAP_REVBITS_00:
                         strcpy(cpu_rev, "1.0");
@@ -462,7 +485,13 @@ void __init omap2_check_revision(void)
                 omap24xx_check_revision();
         } else if (cpu_is_omap34xx()) {
                 omap3_check_revision();
-                omap3_check_features();
+
+                /* TI816X doesn't have feature register */
+                if (!cpu_is_ti816x())
+                        omap3_check_features();
+                else
+                        ti816x_check_features();
+
                 omap3_cpuinfo();
                 return;
         } else if (cpu_is_omap44xx()) {
diff --git a/arch/arm/mach-omap2/include/mach/entry-macro.S b/arch/arm/mach-omap2/include/mach/entry-macro.S
index 81985a665cb3..a48690b90990 100644
--- a/arch/arm/mach-omap2/include/mach/entry-macro.S
+++ b/arch/arm/mach-omap2/include/mach/entry-macro.S
@@ -61,6 +61,14 @@
                 bne     9998f
                 ldr     \irqnr, [\base, #0xd8] /* IRQ pending reg 3 */
                 cmp     \irqnr, #0x0
+                bne     9998f
+
+                /*
+                 * ti816x has additional IRQ pending register. Checking this
+                 * register on omap2 & omap3 has no effect (read as 0).
+                 */
+                ldr     \irqnr, [\base, #0xf8] /* IRQ pending reg 4 */
+                cmp     \irqnr, #0x0
 9998:
                 ldrne   \irqnr, [\base, #INTCPS_SIR_IRQ_OFFSET]
                 and     \irqnr, \irqnr, #ACTIVEIRQ_MASK /* Clear spurious bits */
@@ -133,6 +141,11 @@
                 bne     9999f
                 ldr     \irqnr, [\base, #0xd8] /* IRQ pending reg 3 */
                 cmp     \irqnr, #0x0
+#ifdef CONFIG_SOC_OMAPTI816X
+                bne     9999f
+                ldr     \irqnr, [\base, #0xf8] /* IRQ pending reg 4 */
+                cmp     \irqnr, #0x0
+#endif
 9999:
                 ldrne   \irqnr, [\base, #INTCPS_SIR_IRQ_OFFSET]
                 and     \irqnr, \irqnr, #ACTIVEIRQ_MASK /* Clear spurious bits */
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 26a61cf27291..f992a81c3939 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -175,6 +175,18 @@ static struct map_desc omap34xx_io_desc[] __initdata = {
 #endif
 };
 #endif
+
+#ifdef CONFIG_SOC_OMAPTI816X
+static struct map_desc omapti816x_io_desc[] __initdata = {
+        {
+                .virtual        = L4_34XX_VIRT,
+                .pfn            = __phys_to_pfn(L4_34XX_PHYS),
+                .length         = L4_34XX_SIZE,
+                .type           = MT_DEVICE
+        },
+};
+#endif
+
 #ifdef  CONFIG_ARCH_OMAP4
 static struct map_desc omap44xx_io_desc[] __initdata = {
         {
@@ -267,6 +279,14 @@ void __init omap34xx_map_common_io(void)
 }
 #endif
 
+#ifdef CONFIG_SOC_OMAPTI816X
+void __init omapti816x_map_common_io(void)
+{
+        iotable_init(omapti816x_io_desc, ARRAY_SIZE(omapti816x_io_desc));
+        _omap2_map_common_io();
+}
+#endif
+
 #ifdef CONFIG_ARCH_OMAP4
 void __init omap44xx_map_common_io(void)
 {
@@ -398,7 +418,7 @@ void __init omap2_init_common_infrastructure(void)
 void __init omap2_init_common_devices(struct omap_sdrc_params *sdrc_cs0,
                                       struct omap_sdrc_params *sdrc_cs1)
 {
-        if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
+        if (cpu_is_omap24xx() || omap3_has_sdrc()) {
                 omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
                 _omap2_init_reprogram_sdrc();
         }
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 23049c487c47..0b9a23d721f4 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -110,7 +110,7 @@ static void omap_mask_irq(struct irq_data *d)
         unsigned int irq = d->irq;
         int offset = irq & (~(IRQ_BITS_PER_REG - 1));
 
-        if (cpu_is_omap34xx()) {
+        if (cpu_is_omap34xx() && !cpu_is_ti816x()) {
                 int spurious = 0;
 
                 /*
@@ -205,6 +205,9 @@ void __init omap_init_irq(void)
 
                 BUG_ON(!base);
 
+                if (cpu_is_ti816x())
+                        bank->nr_irqs = 128;
+
                 /* Static mapping, never released */
                 bank->base_reg = ioremap(base, SZ_4K);
                 if (!bank->base_reg) {
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 74e25cd4bd3a..47eef48b8830 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -486,7 +486,7 @@ static void omap_uart_idle_init(struct omap_uart_state *uart)
                 mod_timer(&uart->timer, jiffies + uart->timeout);
         omap_uart_smart_idle_enable(uart, 0);
 
-        if (cpu_is_omap34xx()) {
+        if (cpu_is_omap34xx() && !cpu_is_ti816x()) {
                 u32 mod = (uart->num > 1) ? OMAP3430_PER_MOD : CORE_MOD;
                 u32 wk_mask = 0;
                 u32 padconf = 0;
@@ -762,13 +762,13 @@ void __init omap_serial_init_port(struct omap_board_data *bdata)
         p->private_data = uart;
 
         /*
-         * omap44xx: Never read empty UART fifo
+         * omap44xx, ti816x: Never read empty UART fifo
          * omap3xxx: Never read empty UART fifo on UARTs
          * with IP rev >=0x52
          */
         uart->regshift = p->regshift;
         uart->membase = p->membase;
-        if (cpu_is_omap44xx())
+        if (cpu_is_omap44xx() || cpu_is_ti816x())
                 uart->errata |= UART_ERRATA_FIFO_FULL_ABORT;
         else if ((serial_read_reg(uart, UART_OMAP_MVER) & 0xFF)
                         >= UART_OMAP_NO_EMPTY_FIFO_READ_IP_REV)
@@ -850,7 +850,7 @@ void __init omap_serial_init_port(struct omap_board_data *bdata)
         }
 
         /* Enable the MDR1 errata for OMAP3 */
-        if (cpu_is_omap34xx())
+        if (cpu_is_omap34xx() && !cpu_is_ti816x())
                 uart->errata |= UART_ERRATA_i202_MDR1_ACCESS;
 }