diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.3/0023-MIPS-lantiq-convert-falcon-to-clkdev-api.patch')
-rw-r--r-- | target/linux/lantiq/patches-3.3/0023-MIPS-lantiq-convert-falcon-to-clkdev-api.patch | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.3/0023-MIPS-lantiq-convert-falcon-to-clkdev-api.patch b/target/linux/lantiq/patches-3.3/0023-MIPS-lantiq-convert-falcon-to-clkdev-api.patch new file mode 100644 index 0000000000..27660861c2 --- /dev/null +++ b/target/linux/lantiq/patches-3.3/0023-MIPS-lantiq-convert-falcon-to-clkdev-api.patch @@ -0,0 +1,244 @@ +From c87a0c58116b2b2d8ccee9bb64df652b563307c4 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Thu, 8 Mar 2012 11:19:11 +0100 +Subject: [PATCH 23/70] MIPS: lantiq: convert falcon to clkdev api + +Unify sysctrl/clock code and add clkdev hooks to sysctrl.c + +Signed-off-by: John Crispin <blogic@openwrt.org> +--- + .../include/asm/mach-lantiq/falcon/lantiq_soc.h | 8 +- + arch/mips/lantiq/falcon/Makefile | 2 +- + arch/mips/lantiq/falcon/sysctrl.c | 129 ++++++++++++-------- + 3 files changed, 80 insertions(+), 59 deletions(-) + +diff --git a/arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h b/arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h +index 0aa1f16..120c56c 100644 +--- a/arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h ++++ b/arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h +@@ -95,6 +95,7 @@ + + /* Activation Status Register */ + #define ACTS_ASC1_ACT 0x00000800 ++#define ACTS_I2C_ACT 0x00004000 + #define ACTS_P0 0x00010000 + #define ACTS_P1 0x00010000 + #define ACTS_P2 0x00020000 +@@ -106,13 +107,6 @@ + #define ACTS_PADCTRL3 0x00200000 + #define ACTS_PADCTRL4 0x00400000 + +-extern void ltq_sysctl_activate(int module, unsigned int mask); +-extern void ltq_sysctl_deactivate(int module, unsigned int mask); +-extern void ltq_sysctl_clken(int module, unsigned int mask); +-extern void ltq_sysctl_clkdis(int module, unsigned int mask); +-extern void ltq_sysctl_reboot(int module, unsigned int mask); +-extern int ltq_gpe_is_activated(unsigned int mask); +- + /* global register ranges */ + extern __iomem void *ltq_ebu_membase; + extern __iomem void *ltq_sys1_membase; +diff --git a/arch/mips/lantiq/falcon/Makefile b/arch/mips/lantiq/falcon/Makefile +index 56b22eb..3634154 100644 +--- a/arch/mips/lantiq/falcon/Makefile ++++ b/arch/mips/lantiq/falcon/Makefile +@@ -1,2 +1,2 @@ +-obj-y := clk.o prom.o reset.o sysctrl.o devices.o gpio.o ++obj-y := prom.o reset.o sysctrl.o devices.o gpio.o + obj-$(CONFIG_LANTIQ_MACH_EASY98000) += mach-easy98000.o +diff --git a/arch/mips/lantiq/falcon/sysctrl.c b/arch/mips/lantiq/falcon/sysctrl.c +index 905a142..900f0e5 100644 +--- a/arch/mips/lantiq/falcon/sysctrl.c ++++ b/arch/mips/lantiq/falcon/sysctrl.c +@@ -9,11 +9,13 @@ + + #include <linux/ioport.h> + #include <linux/export.h> ++#include <linux/clkdev.h> + #include <asm/delay.h> + + #include <lantiq_soc.h> + + #include "devices.h" ++#include "../clk.h" + + /* infrastructure control register */ + #define SYS1_INFRAC 0x00bc +@@ -38,6 +40,10 @@ + #define LTQ_SYSCTL_DEACT 0x0028 + /* reboot Register */ + #define LTQ_SYSCTL_RBT 0x002c ++/* CPU0 Clock Control Register */ ++#define LTQ_SYS1_CPU0CC 0x0040 ++/* clock divider bit */ ++#define LTQ_CPU0CC_CPUDIV 0x0001 + + static struct resource ltq_sysctl_res[] = { + MEM_RES("sys1", LTQ_SYS1_BASE_ADDR, LTQ_SYS1_SIZE), +@@ -64,79 +70,67 @@ void __iomem *ltq_ebu_membase; + #define ltq_status_r32(x) ltq_r32(ltq_status_membase + (x)) + + static inline void +-ltq_sysctl_wait(int module, unsigned int mask, ++ltq_sysctl_wait(struct clk *clk, + unsigned int test, unsigned int reg) + { + int err = 1000000; + +- do {} while (--err && ((ltq_reg_r32(module, reg) +- & mask) != test)); ++ do {} while (--err && ((ltq_reg_r32(clk->module, reg) ++ & clk->bits) != test)); + if (!err) +- pr_err("module de/activation failed %d %08X %08X\n", +- module, mask, test); ++ pr_err("module de/activation failed %d %08X %08X %08X\n", ++ clk->module, clk->bits, test, ++ ltq_reg_r32(clk->module, reg) & clk->bits); + } + +-void +-ltq_sysctl_activate(int module, unsigned int mask) ++static int ++ltq_sysctl_activate(struct clk *clk) + { +- if (module > SYSCTL_SYSGPE) +- return; +- +- ltq_reg_w32(module, mask, LTQ_SYSCTL_CLKEN); +- ltq_reg_w32(module, mask, LTQ_SYSCTL_ACT); +- ltq_sysctl_wait(module, mask, mask, LTQ_SYSCTL_ACTS); ++ ltq_reg_w32(clk->module, clk->bits, LTQ_SYSCTL_CLKEN); ++ ltq_reg_w32(clk->module, clk->bits, LTQ_SYSCTL_ACT); ++ ltq_sysctl_wait(clk, clk->bits, LTQ_SYSCTL_ACTS); ++ return 0; + } +-EXPORT_SYMBOL(ltq_sysctl_activate); + +-void +-ltq_sysctl_deactivate(int module, unsigned int mask) ++static void ++ltq_sysctl_deactivate(struct clk *clk) + { +- if (module > SYSCTL_SYSGPE) +- return; +- +- ltq_reg_w32(module, mask, LTQ_SYSCTL_CLKCLR); +- ltq_reg_w32(module, mask, LTQ_SYSCTL_DEACT); +- ltq_sysctl_wait(module, mask, 0, LTQ_SYSCTL_ACTS); ++ ltq_reg_w32(clk->module, clk->bits, LTQ_SYSCTL_CLKCLR); ++ ltq_reg_w32(clk->module, clk->bits, LTQ_SYSCTL_DEACT); ++ ltq_sysctl_wait(clk, 0, LTQ_SYSCTL_ACTS); + } +-EXPORT_SYMBOL(ltq_sysctl_deactivate); + +-void +-ltq_sysctl_clken(int module, unsigned int mask) ++static int ++ltq_sysctl_clken(struct clk *clk) + { +- if (module > SYSCTL_SYSGPE) +- return; +- +- ltq_reg_w32(module, mask, LTQ_SYSCTL_CLKEN); +- ltq_sysctl_wait(module, mask, mask, LTQ_SYSCTL_CLKS); ++ ltq_reg_w32(clk->module, clk->bits, LTQ_SYSCTL_CLKEN); ++ ltq_sysctl_wait(clk, clk->bits, LTQ_SYSCTL_CLKS); ++ return 0; + } +-EXPORT_SYMBOL(ltq_sysctl_clken); + +-void +-ltq_sysctl_clkdis(int module, unsigned int mask) ++static void ++ltq_sysctl_clkdis(struct clk *clk) + { +- if (module > SYSCTL_SYSGPE) +- return; +- +- ltq_reg_w32(module, mask, LTQ_SYSCTL_CLKCLR); +- ltq_sysctl_wait(module, mask, 0, LTQ_SYSCTL_CLKS); ++ ltq_reg_w32(clk->module, clk->bits, LTQ_SYSCTL_CLKCLR); ++ ltq_sysctl_wait(clk, 0, LTQ_SYSCTL_CLKS); + } +-EXPORT_SYMBOL(ltq_sysctl_clkdis); + +-void +-ltq_sysctl_reboot(int module, unsigned int mask) ++static void ++ltq_sysctl_reboot(struct clk *clk) + { + unsigned int act; +- +- if (module > SYSCTL_SYSGPE) +- return; +- +- act = ltq_reg_r32(module, LTQ_SYSCTL_ACT); +- if ((~act & mask) != 0) +- ltq_sysctl_activate(module, ~act & mask); +- ltq_reg_w32(module, act & mask, LTQ_SYSCTL_RBT); +- ltq_sysctl_wait(module, mask, mask, LTQ_SYSCTL_ACTS); ++ unsigned int bits; ++ ++ act = ltq_reg_r32(clk->module, LTQ_SYSCTL_ACT); ++ bits = ~act & clk->bits; ++ if (bits != 0) { ++ ltq_reg_w32(clk->module, bits, LTQ_SYSCTL_CLKEN); ++ ltq_reg_w32(clk->module, bits, LTQ_SYSCTL_ACT); ++ ltq_sysctl_wait(clk, bits, LTQ_SYSCTL_ACTS); ++ } ++ ltq_reg_w32(clk->module, act & clk->bits, LTQ_SYSCTL_RBT); ++ ltq_sysctl_wait(clk, clk->bits, LTQ_SYSCTL_ACTS); + } +-EXPORT_SYMBOL(ltq_sysctl_reboot); + + /* enable the ONU core */ + static void +@@ -167,6 +161,24 @@ ltq_gpe_enable(void) + udelay(1); + } + ++static inline void ++clkdev_add_sys(const char *dev, unsigned int module, ++ unsigned int bits) ++{ ++ struct clk *clk = kzalloc(sizeof(struct clk), GFP_KERNEL); ++ ++ clk->cl.dev_id = dev; ++ clk->cl.con_id = NULL; ++ clk->cl.clk = clk; ++ clk->module = module; ++ clk->activate = ltq_sysctl_activate; ++ clk->deactivate = ltq_sysctl_deactivate; ++ clk->enable = ltq_sysctl_clken; ++ clk->disable = ltq_sysctl_clkdis; ++ clk->reboot = ltq_sysctl_reboot; ++ clkdev_add(&clk->cl); ++} ++ + void __init + ltq_soc_init(void) + { +@@ -180,4 +192,19 @@ ltq_soc_init(void) + ltq_ebu_membase = ltq_remap_resource(<q_ebu_res); + + ltq_gpe_enable(); ++ ++ /* get our 3 static rates for cpu, fpi and io clocks */ ++ if (ltq_sys1_r32(LTQ_SYS1_CPU0CC) & LTQ_CPU0CC_CPUDIV) ++ clkdev_add_static(CLOCK_200M, CLOCK_100M, CLOCK_200M); ++ else ++ clkdev_add_static(CLOCK_400M, CLOCK_100M, CLOCK_200M); ++ ++ /* add our clock domains */ ++ clkdev_add_sys("falcon_gpio.0", SYSCTL_SYSETH, ACTS_PADCTRL0 | ACTS_P0); ++ clkdev_add_sys("falcon_gpio.1", SYSCTL_SYS1, ACTS_PADCTRL1 | ACTS_P1); ++ clkdev_add_sys("falcon_gpio.2", SYSCTL_SYSETH, ACTS_PADCTRL2 | ACTS_P2); ++ clkdev_add_sys("falcon_gpio.3", SYSCTL_SYS1, ACTS_PADCTRL3 | ACTS_P3); ++ clkdev_add_sys("falcon_gpio.4", SYSCTL_SYS1, ACTS_PADCTRL4 | ACTS_P4); ++ clkdev_add_sys("ltq_asc.1", SYSCTL_SYS1, ACTS_ASC1_ACT); ++ clkdev_add_sys("falcon_i2c", SYSCTL_SYS1, ACTS_I2C_ACT); + } +-- +1.7.9.1 + |