OpenWrt – Blame information for rev 1

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Rev Author Line No. Line
1 office 1 --- a/arch/mips/ralink/mt7621.c
2 +++ b/arch/mips/ralink/mt7621.c
3 @@ -9,6 +9,7 @@
4  
5 #include <linux/kernel.h>
6 #include <linux/init.h>
7 +#include <linux/jiffies.h>
8  
9 #include <asm/mipsregs.h>
10 #include <asm/smp-ops.h>
11 @@ -16,6 +17,7 @@
12 #include <asm/mach-ralink/ralink_regs.h>
13 #include <asm/mach-ralink/mt7621.h>
14 #include <asm/mips-boards/launch.h>
15 +#include <asm/delay.h>
16  
17 #include <pinmux.h>
18  
19 @@ -177,6 +179,58 @@ bool plat_cpu_core_present(int core)
20 return true;
21 }
22  
23 +#define LPS_PREC 8
24 +/*
25 +* Re-calibration lpj(loop-per-jiffy).
26 +* (derived from kernel/calibrate.c)
27 +*/
28 +static int udelay_recal(void)
29 +{
30 + unsigned int i, lpj = 0;
31 + unsigned long ticks, loopbit;
32 + int lps_precision = LPS_PREC;
33 +
34 + lpj = (1<<12);
35 +
36 + while ((lpj <<= 1) != 0) {
37 + /* wait for "start of" clock tick */
38 + ticks = jiffies;
39 + while (ticks == jiffies)
40 + /* nothing */;
41 +
42 + /* Go .. */
43 + ticks = jiffies;
44 + __delay(lpj);
45 + ticks = jiffies - ticks;
46 + if (ticks)
47 + break;
48 + }
49 +
50 + /*
51 + * Do a binary approximation to get lpj set to
52 + * equal one clock (up to lps_precision bits)
53 + */
54 + lpj >>= 1;
55 + loopbit = lpj;
56 + while (lps_precision-- && (loopbit >>= 1)) {
57 + lpj |= loopbit;
58 + ticks = jiffies;
59 + while (ticks == jiffies)
60 + /* nothing */;
61 + ticks = jiffies;
62 + __delay(lpj);
63 + if (jiffies != ticks) /* longer than 1 tick */
64 + lpj &= ~loopbit;
65 + }
66 + printk(KERN_INFO "%d CPUs re-calibrate udelay(lpj = %d)\n", NR_CPUS, lpj);
67 +
68 + for(i=0; i< NR_CPUS; i++)
69 + cpu_data[i].udelay_val = lpj;
70 +
71 + return 0;
72 +}
73 +device_initcall(udelay_recal);
74 +
75 void prom_soc_init(struct ralink_soc_info *soc_info)
76 {
77 void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7621_SYSC_BASE);
78 --- a/arch/mips/ralink/Kconfig
79 +++ b/arch/mips/ralink/Kconfig
80 @@ -59,6 +59,7 @@ choice
81 select CLKSRC_MIPS_GIC
82 select HW_HAS_PCI
83 select WEAK_REORDERING_BEYOND_LLSC
84 + select GENERIC_CLOCKEVENTS_BROADCAST
85 endchoice
86  
87 choice