ARM: 6204/1: Fixups for the RealView PB1176

This is a number of basic fixes to the PB1176 that makes it tick
properly:

- Detect MMC insertion/removal even when PL061 GPIO is not compiled
  in. The register to read this status directly is removed on the
  PB1176.
- Define the UART3 on the DevChip (where is actually is) and define
  the new UART4 serial port on the FPGA.
- Also define the clocks for these two UARTs apropriately.
- Remove the false notion that the PB1176 should have its CLCD
  on the ISSP, this is not the case, it is in the DevChip.
- Remove the defintions and the previously commented-out PL081
  DMAC. As confirmed by mail this was found to be broken on the
  PB1176 board and removed from the subsequent FPGA images.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 29 insertions, 9 deletions

diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 595be19f8ad5..9e17b4afc47e 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -232,6 +232,21 @@ static unsigned int realview_mmc_status(struct device *dev)
         struct amba_device *adev = container_of(dev, struct amba_device, dev);
         u32 mask;
 
+        if (machine_is_realview_pb1176()) {
+                static bool inserted = false;
+
+                /*
+                 * The PB1176 does not have the status register,
+                 * assume it is inserted at startup, then invert
+                 * for each call so card insertion/removal will
+                 * be detected anyway. This will not be called if
+                 * GPIO on PL061 is active, which is the proper
+                 * way to do this on the PB1176.
+                 */
+                inserted = !inserted;
+                return inserted ? 0 : 1;
+        }
+
         if (adev->res.start == REALVIEW_MMCI0_BASE)
                 mask = 1;
         else
@@ -313,6 +328,12 @@ static struct clk_lookup lookups[] = {
         }, {    /* UART3 */
                 .dev_id         = "fpga:uart3",
                 .clk            = &ref24_clk,
+        }, {    /* UART3 is on the dev chip in PB1176 */
+                .dev_id         = "dev:uart3",
+                .clk            = &ref24_clk,
+        }, {    /* UART4 only exists in PB1176 */
+                .dev_id         = "fpga:uart4",
+                .clk            = &ref24_clk,
         }, {    /* KMI0 */
                 .dev_id         = "fpga:kmi0",
                 .clk            = &ref24_clk,
@@ -322,7 +343,7 @@ static struct clk_lookup lookups[] = {
         }, {    /* MMC0 */
                 .dev_id         = "fpga:mmc0",
                 .clk            = &ref24_clk,
-        }, {    /* EB:CLCD */
+        }, {    /* CLCD is in the PB1176 and EB DevChip */
                 .dev_id         = "dev:clcd",
                 .clk            = &oscvco_clk,
         }, {    /* PB:CLCD */
diff --git a/arch/arm/mach-realview/include/mach/board-pb1176.h b/arch/arm/mach-realview/include/mach/board-pb1176.h
index 2f5ccb298858..002ab5d8c11c 100644
--- a/arch/arm/mach-realview/include/mach/board-pb1176.h
+++ b/arch/arm/mach-realview/include/mach/board-pb1176.h
@@ -26,6 +26,7 @@
 /*
  * Peripheral addresses
  */
+#define REALVIEW_PB1176_UART4_BASE              0x10009000 /* UART 4 */
 #define REALVIEW_PB1176_SCTL_BASE               0x10100000 /* System controller */
 #define REALVIEW_PB1176_SMC_BASE                0x10111000 /* SMC */
 #define REALVIEW_PB1176_DMC_BASE                0x10109000 /* DMC configuration */
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index 099a1f125cf8..9f02350cff3b 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -144,8 +144,6 @@ static struct pl061_platform_data gpio2_plat_data = {
 #define MPMC_DMA        { 0, 0 }
 #define PB1176_CLCD_IRQ { IRQ_DC1176_CLCD, NO_IRQ }
 #define PB1176_CLCD_DMA { 0, 0 }
-#define DMAC_IRQ        { IRQ_PB1176_DMAC, NO_IRQ }
-#define DMAC_DMA        { 0, 0 }
 #define SCTL_IRQ        { NO_IRQ, NO_IRQ }
 #define SCTL_DMA        { 0, 0 }
 #define PB1176_WATCHDOG_IRQ     { IRQ_DC1176_WATCHDOG, NO_IRQ }
@@ -166,6 +164,8 @@ static struct pl061_platform_data gpio2_plat_data = {
 #define PB1176_UART2_DMA        { 11, 10 }
 #define PB1176_UART3_IRQ        { IRQ_DC1176_UART3, NO_IRQ }
 #define PB1176_UART3_DMA        { 0x86, 0x87 }
+#define PB1176_UART4_IRQ        { IRQ_PB1176_UART4, NO_IRQ }
+#define PB1176_UART4_DMA        { 0, 0 }
 #define PB1176_SSP_IRQ          { IRQ_PB1176_SSP, NO_IRQ }
 #define PB1176_SSP_DMA          { 9, 8 }
 
@@ -174,7 +174,7 @@ AMBA_DEVICE(aaci,	"fpga:aaci",	AACI,		NULL);
 AMBA_DEVICE(mmc0,       "fpga:mmc0",    MMCI0,          &realview_mmc0_plat_data);
 AMBA_DEVICE(kmi0,       "fpga:kmi0",    KMI0,           NULL);
 AMBA_DEVICE(kmi1,       "fpga:kmi1",    KMI1,           NULL);
-AMBA_DEVICE(uart3,      "fpga:uart3",   PB1176_UART3,   NULL);
+AMBA_DEVICE(uart4,      "fpga:uart4",   PB1176_UART4,   NULL);
 
 /* DevChip Primecells */
 AMBA_DEVICE(smc,        "dev:smc",      PB1176_SMC,     NULL);
@@ -188,18 +188,16 @@ AMBA_DEVICE(sci0,	"dev:sci0",	SCI,		NULL);
 AMBA_DEVICE(uart0,      "dev:uart0",    PB1176_UART0,   NULL);
 AMBA_DEVICE(uart1,      "dev:uart1",    PB1176_UART1,   NULL);
 AMBA_DEVICE(uart2,      "dev:uart2",    PB1176_UART2,   NULL);
+AMBA_DEVICE(uart3,      "dev:uart3",    PB1176_UART3,   NULL);
 AMBA_DEVICE(ssp0,       "dev:ssp0",     PB1176_SSP,     NULL);
-
-/* Primecells on the NEC ISSP chip */
-AMBA_DEVICE(clcd,       "issp:clcd",    PB1176_CLCD,    &clcd_plat_data);
-//AMBA_DEVICE(dmac,     "issp:dmac",    PB1176_DMAC,    NULL);
+AMBA_DEVICE(clcd,       "dev:clcd",     PB1176_CLCD,    &clcd_plat_data);
 
 static struct amba_device *amba_devs[] __initdata = {
-//      &dmac_device,
         &uart0_device,
         &uart1_device,
         &uart2_device,
         &uart3_device,
+        &uart4_device,
         &smc_device,
         &clcd_device,
         &sctl_device,