MIPS: PowerTV: Streamline access to platform device registers

Pre-compute addresses for the basic ASIC registers. This speeds up access
and allows memory for unused configurations to be freed. In addition,
uninitialized register addresses will be returned as NULL to catch bad
usage quickly.

Signed-off-by: David VomLehn <dvomlehn@cisco.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/806/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 67 insertions, 64 deletions

diff --git a/arch/mips/powertv/asic/asic-cronus.c b/arch/mips/powertv/asic/asic-cronus.c
index 5f4589c9f83..5bb64bfb508 100644
--- a/arch/mips/powertv/asic/asic-cronus.c
+++ b/arch/mips/powertv/asic/asic-cronus.c
@@ -23,76 +23,79 @@
  * Description:  Defines the platform resources for the SA settop.
  */
 
+#include <linux/init.h>
 #include <asm/mach-powertv/asic.h>
 
-const struct register_map cronus_register_map = {
-	.eic_slow0_strt_add = 0x000000,
-	.eic_cfg_bits = 0x000038,
-	.eic_ready_status = 0x00004C,
+#define CRONUS_ADDR(x)	(CRONUS_IO_BASE + (x))
 
-	.chipver3 = 0x2A0800,
-	.chipver2 = 0x2A0804,
-	.chipver1 = 0x2A0808,
-	.chipver0 = 0x2A080C,
+const struct register_map cronus_register_map __initdata = {
+	.eic_slow0_strt_add = {.phys = CRONUS_ADDR(0x000000)},
+	.eic_cfg_bits = {.phys = CRONUS_ADDR(0x000038)},
+	.eic_ready_status = {.phys = CRONUS_ADDR(0x00004C)},
+
+	.chipver3 = {.phys = CRONUS_ADDR(0x2A0800)},
+	.chipver2 = {.phys = CRONUS_ADDR(0x2A0804)},
+	.chipver1 = {.phys = CRONUS_ADDR(0x2A0808)},
+	.chipver0 = {.phys = CRONUS_ADDR(0x2A080C)},
 
 	/* The registers of IRBlaster */
-	.uart1_intstat = 0x2A1800,
-	.uart1_inten = 0x2A1804,
-	.uart1_config1 = 0x2A1808,
-	.uart1_config2 = 0x2A180C,
-	.uart1_divisorhi = 0x2A1810,
-	.uart1_divisorlo = 0x2A1814,
-	.uart1_data = 0x2A1818,
-	.uart1_status = 0x2A181C,
+	.uart1_intstat = {.phys = CRONUS_ADDR(0x2A1800)},
+	.uart1_inten = {.phys = CRONUS_ADDR(0x2A1804)},
+	.uart1_config1 = {.phys = CRONUS_ADDR(0x2A1808)},
+	.uart1_config2 = {.phys = CRONUS_ADDR(0x2A180C)},
+	.uart1_divisorhi = {.phys = CRONUS_ADDR(0x2A1810)},
+	.uart1_divisorlo = {.phys = CRONUS_ADDR(0x2A1814)},
+	.uart1_data = {.phys = CRONUS_ADDR(0x2A1818)},
+	.uart1_status = {.phys = CRONUS_ADDR(0x2A181C)},
 
-	.int_stat_3 = 0x2A2800,
-	.int_stat_2 = 0x2A2804,
-	.int_stat_1 = 0x2A2808,
-	.int_stat_0 = 0x2A280C,
-	.int_config = 0x2A2810,
-	.int_int_scan = 0x2A2818,
-	.ien_int_3 = 0x2A2830,
-	.ien_int_2 = 0x2A2834,
-	.ien_int_1 = 0x2A2838,
-	.ien_int_0 = 0x2A283C,
-	.int_level_3_3 = 0x2A2880,
-	.int_level_3_2 = 0x2A2884,
-	.int_level_3_1 = 0x2A2888,
-	.int_level_3_0 = 0x2A288C,
-	.int_level_2_3 = 0x2A2890,
-	.int_level_2_2 = 0x2A2894,
-	.int_level_2_1 = 0x2A2898,
-	.int_level_2_0 = 0x2A289C,
-	.int_level_1_3 = 0x2A28A0,
-	.int_level_1_2 = 0x2A28A4,
-	.int_level_1_1 = 0x2A28A8,
-	.int_level_1_0 = 0x2A28AC,
-	.int_level_0_3 = 0x2A28B0,
-	.int_level_0_2 = 0x2A28B4,
-	.int_level_0_1 = 0x2A28B8,
-	.int_level_0_0 = 0x2A28BC,
-	.int_docsis_en = 0x2A28F4,
+	.int_stat_3 = {.phys = CRONUS_ADDR(0x2A2800)},
+	.int_stat_2 = {.phys = CRONUS_ADDR(0x2A2804)},
+	.int_stat_1 = {.phys = CRONUS_ADDR(0x2A2808)},
+	.int_stat_0 = {.phys = CRONUS_ADDR(0x2A280C)},
+	.int_config = {.phys = CRONUS_ADDR(0x2A2810)},
+	.int_int_scan = {.phys = CRONUS_ADDR(0x2A2818)},
+	.ien_int_3 = {.phys = CRONUS_ADDR(0x2A2830)},
+	.ien_int_2 = {.phys = CRONUS_ADDR(0x2A2834)},
+	.ien_int_1 = {.phys = CRONUS_ADDR(0x2A2838)},
+	.ien_int_0 = {.phys = CRONUS_ADDR(0x2A283C)},
+	.int_level_3_3 = {.phys = CRONUS_ADDR(0x2A2880)},
+	.int_level_3_2 = {.phys = CRONUS_ADDR(0x2A2884)},
+	.int_level_3_1 = {.phys = CRONUS_ADDR(0x2A2888)},
+	.int_level_3_0 = {.phys = CRONUS_ADDR(0x2A288C)},
+	.int_level_2_3 = {.phys = CRONUS_ADDR(0x2A2890)},
+	.int_level_2_2 = {.phys = CRONUS_ADDR(0x2A2894)},
+	.int_level_2_1 = {.phys = CRONUS_ADDR(0x2A2898)},
+	.int_level_2_0 = {.phys = CRONUS_ADDR(0x2A289C)},
+	.int_level_1_3 = {.phys = CRONUS_ADDR(0x2A28A0)},
+	.int_level_1_2 = {.phys = CRONUS_ADDR(0x2A28A4)},
+	.int_level_1_1 = {.phys = CRONUS_ADDR(0x2A28A8)},
+	.int_level_1_0 = {.phys = CRONUS_ADDR(0x2A28AC)},
+	.int_level_0_3 = {.phys = CRONUS_ADDR(0x2A28B0)},
+	.int_level_0_2 = {.phys = CRONUS_ADDR(0x2A28B4)},
+	.int_level_0_1 = {.phys = CRONUS_ADDR(0x2A28B8)},
+	.int_level_0_0 = {.phys = CRONUS_ADDR(0x2A28BC)},
+	.int_docsis_en = {.phys = CRONUS_ADDR(0x2A28F4)},
 
-	.mips_pll_setup = 0x1C0000,
-	.usb_fs = 0x1C0018,
-	.test_bus = 0x1C00CC,
-	.crt_spare = 0x1c00d4,
-	.usb2_ohci_int_mask = 0x20000C,
-	.usb2_strap = 0x200014,
-	.ehci_hcapbase = 0x21FE00,
-	.ohci_hc_revision = 0x1E0000,
-	.bcm1_bs_lmi_steer = 0x2E0008,
-	.usb2_control = 0x2E004C,
-	.usb2_stbus_obc = 0x21FF00,
-	.usb2_stbus_mess_size = 0x21FF04,
-	.usb2_stbus_chunk_size = 0x21FF08,
+	.mips_pll_setup = {.phys = CRONUS_ADDR(0x1C0000)},
+	.usb_fs = {.phys = CRONUS_ADDR(0x1C0018)},
+	.test_bus = {.phys = CRONUS_ADDR(0x1C00CC)},
+	.crt_spare = {.phys = CRONUS_ADDR(0x1c00d4)},
+	.usb2_ohci_int_mask = {.phys = CRONUS_ADDR(0x20000C)},
+	.usb2_strap = {.phys = CRONUS_ADDR(0x200014)},
+	.ehci_hcapbase = {.phys = CRONUS_ADDR(0x21FE00)},
+	.ohci_hc_revision = {.phys = CRONUS_ADDR(0x1E0000)},
+	.bcm1_bs_lmi_steer = {.phys = CRONUS_ADDR(0x2E0008)},
+	.usb2_control = {.phys = CRONUS_ADDR(0x2E004C)},
+	.usb2_stbus_obc = {.phys = CRONUS_ADDR(0x21FF00)},
+	.usb2_stbus_mess_size = {.phys = CRONUS_ADDR(0x21FF04)},
+	.usb2_stbus_chunk_size = {.phys = CRONUS_ADDR(0x21FF08)},
 
-	.pcie_regs = 0x220000,
-	.tim_ch = 0x2A2C10,
-	.tim_cl = 0x2A2C14,
-	.gpio_dout = 0x2A2C20,
-	.gpio_din = 0x2A2C24,
-	.gpio_dir = 0x2A2C2C,
-	.watchdog = 0x2A2C30,
-	.front_panel = 0x2A3800,
+	.pcie_regs = {.phys = CRONUS_ADDR(0x220000)},
+	.tim_ch = {.phys = CRONUS_ADDR(0x2A2C10)},
+	.tim_cl = {.phys = CRONUS_ADDR(0x2A2C14)},
+	.gpio_dout = {.phys = CRONUS_ADDR(0x2A2C20)},
+	.gpio_din = {.phys = CRONUS_ADDR(0x2A2C24)},
+	.gpio_dir = {.phys = CRONUS_ADDR(0x2A2C2C)},
+	.watchdog = {.phys = CRONUS_ADDR(0x2A2C30)},
+	.front_panel = {.phys = CRONUS_ADDR(0x2A3800)},
 };