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;
 }