MIPS: AR7: Add support for Titan (TNETV10xx) SoC variant

Add support for Titan TNETV1050,1055,1056,1060 variants. This SoC is almost
completely identical to AR7 except on a few points:
- a second bank of gpios is available
- vlynq0 on titan is vlynq1 on ar7
- different PHY addresses for cpmac0

This SoC can be found on commercial products like the Linksys WRTP54G

Original patch by Xin with improvments by Florian.

Signed-off-by: Xin Zhen <xlonestar2000@aim.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/1563/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

---

2 files changed, 45 insertions, 3 deletions

diff --git a/arch/mips/include/asm/mach-ar7/ar7.h b/arch/mips/include/asm/mach-ar7/ar7.h
index ddb413e81d06..7919d76186bf 100644
--- a/arch/mips/include/asm/mach-ar7/ar7.h
+++ b/arch/mips/include/asm/mach-ar7/ar7.h
@@ -39,6 +39,7 @@
 #define AR7_REGS_UART0  (AR7_REGS_BASE + 0x0e00)
 #define AR7_REGS_USB    (AR7_REGS_BASE + 0x1200)
 #define AR7_REGS_RESET  (AR7_REGS_BASE + 0x1600)
+#define AR7_REGS_PINSEL (AR7_REGS_BASE + 0x160C)
 #define AR7_REGS_VLYNQ0 (AR7_REGS_BASE + 0x1800)
 #define AR7_REGS_DCL    (AR7_REGS_BASE + 0x1a00)
 #define AR7_REGS_VLYNQ1 (AR7_REGS_BASE + 0x1c00)
@@ -50,6 +51,14 @@
 #define UR8_REGS_WDT    (AR7_REGS_BASE + 0x0b00)
 #define UR8_REGS_UART1  (AR7_REGS_BASE + 0x0f00)
 
+/* Titan registers */
+#define TITAN_REGS_ESWITCH_BASE (0x08640000)
+#define TITAN_REGS_MAC0         (TITAN_REGS_ESWITCH_BASE)
+#define TITAN_REGS_MAC1         (TITAN_REGS_ESWITCH_BASE + 0x0800)
+#define TITAN_REGS_MDIO         (TITAN_REGS_ESWITCH_BASE + 0x02000)
+#define TITAN_REGS_VLYNQ0       (AR7_REGS_BASE + 0x1c00)
+#define TITAN_REGS_VLYNQ1       (AR7_REGS_BASE + 0x1300)
+
 #define AR7_RESET_PERIPHERAL    0x0
 #define AR7_RESET_SOFTWARE      0x4
 #define AR7_RESET_STATUS        0x8
@@ -59,15 +68,30 @@
 #define AR7_RESET_BIT_MDIO      22
 #define AR7_RESET_BIT_EPHY      26
 
+#define TITAN_RESET_BIT_EPHY1   28
+
 /* GPIO control registers */
 #define AR7_GPIO_INPUT  0x0
 #define AR7_GPIO_OUTPUT 0x4
 #define AR7_GPIO_DIR    0x8
 #define AR7_GPIO_ENABLE 0xc
+#define TITAN_GPIO_INPUT_0      0x0
+#define TITAN_GPIO_INPUT_1      0x4
+#define TITAN_GPIO_OUTPUT_0     0x8
+#define TITAN_GPIO_OUTPUT_1     0xc
+#define TITAN_GPIO_DIR_0        0x10
+#define TITAN_GPIO_DIR_1        0x14
+#define TITAN_GPIO_ENBL_0       0x18
+#define TITAN_GPIO_ENBL_1       0x1c
 
 #define AR7_CHIP_7100   0x18
 #define AR7_CHIP_7200   0x2b
 #define AR7_CHIP_7300   0x05
+#define AR7_CHIP_TITAN  0x07
+#define TITAN_CHIP_1050 0x0f
+#define TITAN_CHIP_1055 0x0e
+#define TITAN_CHIP_1056 0x0d
+#define TITAN_CHIP_1060 0x07
 
 /* Interrupts */
 #define AR7_IRQ_UART0   15
@@ -95,14 +119,29 @@ struct plat_dsl_data {
 
 extern int ar7_cpu_clock, ar7_bus_clock, ar7_dsp_clock;
 
+static inline int ar7_is_titan(void)
+{
+        return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x24)) & 0xffff) ==
+                AR7_CHIP_TITAN;
+}
+
 static inline u16 ar7_chip_id(void)
 {
-        return readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x14)) & 0xffff;
+        return ar7_is_titan() ? AR7_CHIP_TITAN : (readl((void *)
+                KSEG1ADDR(AR7_REGS_GPIO + 0x14)) & 0xffff);
+}
+
+static inline u16 titan_chip_id(void)
+{
+        unsigned int val = readl((void *)KSEG1ADDR(AR7_REGS_GPIO +
+                                                TITAN_GPIO_INPUT_1));
+        return ((val >> 12) & 0x0f);
 }
 
 static inline u8 ar7_chip_rev(void)
 {
-        return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x14)) >> 16) & 0xff;
+        return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + (ar7_is_titan() ? 0x24 :
+                0x14))) >> 16) & 0xff;
 }
 
 struct clk {
@@ -163,4 +202,6 @@ static inline void ar7_device_off(u32 bit)
 
 int __init ar7_gpio_init(void);
 
+int __init ar7_gpio_init(void);
+
 #endif /* __AR7_H__ */
diff --git a/arch/mips/include/asm/mach-ar7/gpio.h b/arch/mips/include/asm/mach-ar7/gpio.h
index abc317c0372e..c177cd1eed25 100644
--- a/arch/mips/include/asm/mach-ar7/gpio.h
+++ b/arch/mips/include/asm/mach-ar7/gpio.h
@@ -22,7 +22,8 @@
 #include <asm/mach-ar7/ar7.h>
 
 #define AR7_GPIO_MAX 32
-#define NR_BUILTIN_GPIO AR7_GPIO_MAX
+#define TITAN_GPIO_MAX  51
+#define NR_BUILTIN_GPIO TITAN_GPIO_MAX
 
 #define gpio_to_irq(gpio)       -1