diff options
Diffstat (limited to 'target/linux/ifxmips/files/arch/mips')
| -rw-r--r-- | target/linux/ifxmips/files/arch/mips/ifxmips/Makefile | 5 | ||||
| -rw-r--r-- | target/linux/ifxmips/files/arch/mips/ifxmips/board.c | 11 | ||||
| -rw-r--r-- | target/linux/ifxmips/files/arch/mips/ifxmips/cgu.c | 396 | ||||
| -rw-r--r-- | target/linux/ifxmips/files/arch/mips/ifxmips/gptu.c | 846 |
4 files changed, 1253 insertions, 5 deletions
diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/Makefile b/target/linux/ifxmips/files/arch/mips/ifxmips/Makefile index 86dc423..ef317b5 100644 --- a/target/linux/ifxmips/files/arch/mips/ifxmips/Makefile +++ b/target/linux/ifxmips/files/arch/mips/ifxmips/Makefile @@ -1,5 +1,2 @@ -obj-y := reset.o prom.o setup.o interrupt.o dma-core.o pmu.o board.o -#mps/ - +obj-y := reset.o prom.o setup.o interrupt.o dma-core.o pmu.o board.o cgu.o gptu.o obj-$(CONFIG_PCI) += pci.o -obj-$(CONFIG_KGDB) += kgdb_serial.o diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/board.c b/target/linux/ifxmips/files/arch/mips/ifxmips/board.c index d925cf2..09514da 100644 --- a/target/linux/ifxmips/files/arch/mips/ifxmips/board.c +++ b/target/linux/ifxmips/files/arch/mips/ifxmips/board.c @@ -35,7 +35,7 @@ #include <asm/io.h> #include <asm/ifxmips/ifxmips.h> -#define MAX_IFXMIPS_DEVS 6 +#define MAX_IFXMIPS_DEVS 7 #define BOARD_DANUBE "Danube" #define BOARD_DANUBE_CHIPID 0x10129083 @@ -73,6 +73,14 @@ static struct platform_device ifxmips_mii[] = }, }; +static struct platform_device ifxmips_wdt[] = +{ + { + .id = 0, + .name = "ifxmips_wdt", + }, +}; + static struct physmap_flash_data ifxmips_mtd_data = { .width = 2, }; @@ -148,6 +156,7 @@ int __init ifxmips_init_devices(void) ifxmips_devs[dev++] = ifxmips_gpio; ifxmips_devs[dev++] = ifxmips_mii; ifxmips_devs[dev++] = ifxmips_mtd; + ifxmips_devs[dev++] = ifxmips_wdt; #ifdef CONFIG_GPIO_DEVICE ifxmips_devs[dev++] = ifxmips_gpio_dev; #endif diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/cgu.c b/target/linux/ifxmips/files/arch/mips/ifxmips/cgu.c new file mode 100644 index 0000000..2f292a2 --- /dev/null +++ b/target/linux/ifxmips/files/arch/mips/ifxmips/cgu.c @@ -0,0 +1,396 @@ +/* + * arch/mips/ifxmips/cgu.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. + * + * Copyright (C) 2007 Xu Liang, infineon + * + * Rewrite of Infineon IFXMips code + * Copyright (C) 2008 John Crispin <blogic@openwrt.org> + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/version.h> +#include <linux/types.h> +#include <linux/fs.h> +#include <linux/miscdevice.h> +#include <linux/init.h> +#include <asm/uaccess.h> +#include <asm/unistd.h> +#include <asm/irq.h> +#include <asm/div64.h> +#include <linux/errno.h> +#include <asm/ifxmips/ifxmips.h> + +#define FIX_FOR_36M_CRYSTAL 1 +#define BASIC_INPUT_CLOCK_FREQUENCY_1 35328000 +#define BASIC_INPUT_CLOCK_FREQUENCY_2 36000000 + +#define BASIS_INPUT_CRYSTAL_USB 12000000 + +#define GET_BITS(x, msb, lsb) (((x) & ((1 << ((msb) + 1)) - 1)) >> (lsb)) +#define SET_BITS(x, msb, lsb, value) (((x) & ~(((1 << ((msb) + 1)) - 1) ^ ((1 << (lsb)) - 1))) | (((value) & ((1 << (1 + (msb) - (lsb))) - 1)) << (lsb))) + +#define CGU_PLL0_PHASE_DIVIDER_ENABLE (*IFXMIPS_CGU_PLL0_CFG & (1 << 31)) +#define CGU_PLL0_BYPASS (*IFXMIPS_CGU_PLL0_CFG & (1 << 30)) +#define CGU_PLL0_SRC (*IFXMIPS_CGU_PLL0_CFG & (1 << 29)) +#define CGU_PLL0_CFG_DSMSEL (*IFXMIPS_CGU_PLL0_CFG & (1 << 28)) +#define CGU_PLL0_CFG_FRAC_EN (*IFXMIPS_CGU_PLL0_CFG & (1 << 27)) +#define CGU_PLL0_CFG_PLLK GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 26, 17) +#define CGU_PLL0_CFG_PLLN GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 12, 6) +#define CGU_PLL0_CFG_PLLM GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 5, 2) +#define CGU_PLL1_SRC (*IFXMIPS_CGU_PLL1_CFG & (1 << 31)) +#define CGU_PLL1_BYPASS (*IFXMIPS_CGU_PLL1_CFG & (1 << 30)) +#define CGU_PLL1_CFG_DSMSEL (*IFXMIPS_CGU_PLL1_CFG & (1 << 28)) +#define CGU_PLL1_CFG_FRAC_EN (*IFXMIPS_CGU_PLL1_CFG & (1 << 27)) +#define CGU_PLL1_CFG_PLLK GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 26, 17) +#define CGU_PLL1_CFG_PLLN GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 12, 6) +#define CGU_PLL1_CFG_PLLM GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 5, 2) +#define CGU_PLL2_PHASE_DIVIDER_ENABLE (*IFXMIPS_CGU_PLL2_CFG & (1 << 20)) +#define CGU_PLL2_BYPASS (*IFXMIPS_CGU_PLL2_CFG & (1 << 19)) +#define CGU_PLL2_SRC GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 18, 17) +#define CGU_PLL2_CFG_INPUT_DIV GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 16, 13) +#define CGU_PLL2_CFG_PLLN GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 12, 6) +#define CGU_PLL2_CFG_PLLM GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 5, 2) +#define CGU_SYS_PPESEL GET_BITS(*IFXMIPS_CGU_SYS, 8, 7) +#define CGU_SYS_FPI_SEL (*IFXMIPS_CGU_SYS & (1 << 6)) +#define CGU_SYS_CPU1SEL GET_BITS(*IFXMIPS_CGU_SYS, 5, 4) +#define CGU_SYS_CPU0SEL GET_BITS(*IFXMIPS_CGU_SYS, 3, 2) +#define CGU_SYS_DDR_SEL GET_BITS(*IFXMIPS_CGU_SYS, 1, 0) +#define CGU_IF_CLK_PCI_CLK GET_BITS(*IFXMIPS_CGU_IF_CLK, 23, 20) +#define CGU_IF_CLK_USBSEL GET_BITS(*IFXMIPS_CGU_IF_CLK, 5, 4) +#define CGU_IF_CLK_MIISEL GET_BITS(*IFXMIPS_CGU_IF_CLK, 1, 0) + +static u32 cgu_get_pll0_fdiv(void); + +static inline u32 get_input_clock(int pll) +{ + switch(pll) + { + case 0: + if(CGU_PLL0_SRC) + return BASIS_INPUT_CRYSTAL_USB; + else if(CGU_PLL0_PHASE_DIVIDER_ENABLE) + return BASIC_INPUT_CLOCK_FREQUENCY_1; + else + return BASIC_INPUT_CLOCK_FREQUENCY_2; + case 1: + if(CGU_PLL1_SRC) + return BASIS_INPUT_CRYSTAL_USB; + else if(CGU_PLL0_PHASE_DIVIDER_ENABLE) + return BASIC_INPUT_CLOCK_FREQUENCY_1; + else + return BASIC_INPUT_CLOCK_FREQUENCY_2; + case 2: + switch(CGU_PLL2_SRC) + { + case 0: + return cgu_get_pll0_fdiv(); + case 1: + return CGU_PLL2_PHASE_DIVIDER_ENABLE ? BASIC_INPUT_CLOCK_FREQUENCY_1 : BASIC_INPUT_CLOCK_FREQUENCY_2; + case 2: + return BASIS_INPUT_CRYSTAL_USB; + } + default: + return 0; + } +} + +static inline u32 +cal_dsm(int pll, u32 num, u32 den) +{ + u64 res, clock = get_input_clock(pll); + + res = num * clock; + do_div(res, den); + return res; +} + +static inline u32 +mash_dsm(int pll, u32 M, u32 N, u32 K) +{ + u32 num = ((N + 1) << 10) + K; + u32 den = (M + 1) << 10; + + return cal_dsm(pll, num, den); +} + +static inline u32 ssff_dsm_1(int pll, u32 M, u32 N, u32 K) +{ + u32 num = ((N + 1) << 11) + K + 512; + u32 den = (M + 1) << 11; + + return cal_dsm(pll, num, den); +} + +static inline u32 ssff_dsm_2(int pll, u32 M, u32 N, u32 K) +{ + u32 num = K >= 512 ? ((N + 1) << 12) + K - 512 : ((N + 1) << 12) + K + 3584; + u32 den = (M + 1) << 12; + + return cal_dsm(pll, num, den); +} + +static inline u32 dsm(int pll, u32 M, u32 N, u32 K, u32 dsmsel, u32 phase_div_en) +{ + if ( !dsmsel ) + return mash_dsm(pll, M, N, K); + else if ( !phase_div_en ) + return mash_dsm(pll, M, N, K); + else + return ssff_dsm_2(pll, M, N, K); +} + +static inline u32 cgu_get_pll0_fosc(void) +{ + if(CGU_PLL0_BYPASS) + return get_input_clock(0); + else + return !CGU_PLL0_CFG_FRAC_EN + ? dsm(0, CGU_PLL0_CFG_PLLM, CGU_PLL0_CFG_PLLN, 0, CGU_PLL0_CFG_DSMSEL, CGU_PLL0_PHASE_DIVIDER_ENABLE) + : dsm(0, CGU_PLL0_CFG_PLLM, CGU_PLL0_CFG_PLLN, CGU_PLL0_CFG_PLLK, CGU_PLL0_CFG_DSMSEL, CGU_PLL0_PHASE_DIVIDER_ENABLE); +} + +static inline u32 cgu_get_pll0_fps(int phase) +{ + register u32 fps = cgu_get_pll0_fosc(); + + switch ( phase ) + { + case 1: + /* 1.25 */ + fps = ((fps << 2) + 2) / 5; + break; + case 2: + /* 1.5 */ + fps = ((fps << 1) + 1) / 3; + break; + } + return fps; +} + +static u32 cgu_get_pll0_fdiv(void) +{ + register u32 div = CGU_PLL2_CFG_INPUT_DIV + 1; + + return (cgu_get_pll0_fosc() + (div >> 1)) / div; +} + +static inline u32 cgu_get_pll1_fosc(void) +{ + if(CGU_PLL1_BYPASS) + return get_input_clock(1); + else + return !CGU_PLL1_CFG_FRAC_EN + ? dsm(1, CGU_PLL1_CFG_PLLM, CGU_PLL1_CFG_PLLN, 0, CGU_PLL1_CFG_DSMSEL, 0) + : dsm(1, CGU_PLL1_CFG_PLLM, CGU_PLL1_CFG_PLLN, CGU_PLL1_CFG_PLLK, CGU_PLL1_CFG_DSMSEL, 0); +} + +static inline u32 cgu_get_pll1_fps(void) +{ + register u32 fps = cgu_get_pll1_fosc(); + + return ((fps << 1) + 1) / 3; +} + +static inline u32 cgu_get_pll1_fdiv(void) +{ + return cgu_get_pll1_fosc(); +} + +static inline u32 cgu_get_pll2_fosc(void) +{ + u64 res, clock = get_input_clock(2); + + if ( CGU_PLL2_BYPASS ) + return get_input_clock(2); + + res = (CGU_PLL2_CFG_PLLN + 1) * clock; + do_div(res, CGU_PLL2_CFG_PLLM + 1); + + return res; +} + +static inline u32 cgu_get_pll2_fps(int phase) +{ + register u32 fps = cgu_get_pll2_fosc(); + + switch ( phase ) + { + case 1: + /* 1.125 */ + fps = ((fps << 2) + 2) / 5; break; + case 2: + /* 1.25 */ + fps = ((fps << 3) + 4) / 9; + } + + return fps; +} + +static inline u32 cgu_get_pll2_fdiv(void) +{ + register u32 div = CGU_IF_CLK_PCI_CLK + 1; + return (cgu_get_pll2_fosc() + (div >> 1)) / div; +} + +u32 cgu_get_mips_clock(int cpu) +{ + register u32 ret = cgu_get_pll0_fosc(); + register u32 cpusel = cpu == 0 ? CGU_SYS_CPU0SEL : CGU_SYS_CPU1SEL; + + if ( cpusel == 0 ) + return ret; + else if ( cpusel == 2 ) + ret <<= 1; + + switch ( CGU_SYS_DDR_SEL ) + { + default: + case 0: + return (ret + 1) / 2; + case 1: + return (ret * 2 + 2) / 5; + case 2: + return (ret + 1) / 3; + case 3: + return (ret + 2) / 4; + } +} + +u32 cgu_get_cpu_clock(void) +{ + return cgu_get_mips_clock(0); +} + +u32 cgu_get_io_region_clock(void) +{ + register u32 ret = cgu_get_pll0_fosc(); + + switch ( CGU_SYS_DDR_SEL ) + { + default: + case 0: + return (ret + 1) / 2; + case 1: + return (ret * 2 + 2) / 5; + case 2: + return (ret + 1) / 3; + case 3: + return (ret + 2) / 4; + } +} + +u32 cgu_get_fpi_bus_clock(int fpi) +{ + register u32 ret = cgu_get_io_region_clock(); + + if((fpi == 2) && (CGU_SYS_FPI_SEL)) + ret >>= 1; + + return ret; +} + +u32 cgu_get_pp32_clock(void) +{ + switch ( CGU_SYS_PPESEL ) + { + default: + case 0: + return cgu_get_pll2_fps(1); + case 1: + return cgu_get_pll2_fps(2); + case 2: + return (cgu_get_pll2_fps(1) + 1) >> 1; + case 3: + return (cgu_get_pll2_fps(2) + 1) >> 1; + } +} + +u32 cgu_get_ethernet_clock(int mii) +{ + switch ( CGU_IF_CLK_MIISEL ) + { + case 0: + return (cgu_get_pll2_fosc() + 3) / 12; + case 1: + return (cgu_get_pll2_fosc() + 3) / 6; + case 2: + return 50000000; + case 3: + return 25000000; + } + return 0; +} + +u32 cgu_get_usb_clock(void) +{ + switch ( CGU_IF_CLK_USBSEL ) + { + case 0: + return (cgu_get_pll2_fosc() + 12) / 25; + case 1: + return 12000000; + case 2: + return 12000000 / 4; + case 3: + return 12000000; + } + return 0; +} + +u32 cgu_get_clockout(int clkout) +{ + u32 fosc1 = cgu_get_pll1_fosc(); + u32 fosc2 = cgu_get_pll2_fosc(); + + if ( clkout > 3 || clkout < 0 ) + return 0; + + switch ( ((u32)clkout << 2) | GET_BITS(*IFXMIPS_CGU_IF_CLK, 15 - clkout * 2, 14 - clkout * 2) ) + { + case 0: /* 32.768KHz */ + case 15: + return (fosc1 + 6000) / 12000; + case 1: /* 1.536MHz */ + return (fosc1 + 128) / 256; + case 2: /* 2.5MHz */ + return (fosc2 + 60) / 120; + case 3: /* 12MHz */ + case 5: + case 12: + return (fosc2 + 12) / 25; + case 4: /* 40MHz */ + return (cgu_get_pll2_fps(2) + 3) / 6; + case 6: /* 24MHz */ + return (cgu_get_pll2_fps(2) + 5) / 10; + case 7: /* 48MHz */ + return (cgu_get_pll2_fps(2) + 2) / 5; + case 8: /* 25MHz */ + case 14: + return (fosc2 + 6) / 12; + case 9: /* 50MHz */ + case 13: + return (fosc2 + 3) / 6; + case 10:/* 30MHz */ + return (fosc2 + 5) / 10; + case 11:/* 60MHz */ + return (fosc2 + 2) / 5; + } + + return 0; +} diff --git a/target/linux/ifxmips/files/arch/mips/ifxmips/gptu.c b/target/linux/ifxmips/files/arch/mips/ifxmips/gptu.c new file mode 100644 index 0000000..28424d0 --- /dev/null +++ b/target/linux/ifxmips/files/arch/mips/ifxmips/gptu.c @@ -0,0 +1,846 @@ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/version.h> +#include <linux/types.h> +#include <linux/fs.h> +#include <linux/miscdevice.h> +#include <linux/init.h> +#include <asm/uaccess.h> +#include <asm/unistd.h> +#include <asm/irq.h> +#include <asm/div64.h> +#include <linux/errno.h> +#include <linux/interrupt.h> + +#include <asm/ifxmips/ifxmips.h> +#include <asm/ifxmips/ifxmips_irq.h> +#include <asm/ifxmips/ifxmips_cgu.h> +#include <asm/ifxmips/ifxmips_gptu.h> +#include <asm/ifxmips/ifxmips_pmu.h> + +#define MAX_NUM_OF_32BIT_TIMER_BLOCKS 6 + +#ifdef TIMER1A +#define FIRST_TIMER TIMER1A +#else +#define FIRST_TIMER 2 +#endif + +/* + * GPTC divider is set or not. + */ +#define GPTU_CLC_RMC_IS_SET 0 + +/* + * Timer Interrupt (IRQ) + */ +#define TIMER_INTERRUPT INT_NUM_IM3_IRL0 + 22 // Must be adjusted when ICU driver is available + +/* + * Bits Operation + */ +#define GET_BITS(x, msb, lsb) (((x) & ((1 << ((msb) + 1)) - 1)) >> (lsb)) +#define SET_BITS(x, msb, lsb, value) (((x) & ~(((1 << ((msb) + 1)) - 1) ^ ((1 << (lsb)) - 1))) | (((value) & ((1 << (1 + (msb) - (lsb))) - 1)) << (lsb))) + +/* + * GPTU Register Mapping + */ +#define IFXMIPS_GPTU (KSEG1 + 0x1E100A00) +#define IFXMIPS_GPTU_CLC ((volatile u32*)(IFXMIPS_GPTU + 0x0000)) +#define IFXMIPS_GPTU_ID ((volatile u32*)(IFXMIPS_GPTU + 0x0008)) +#define IFXMIPS_GPTU_CON(n, X) ((volatile u32*)(IFXMIPS_GPTU + 0x0010 + ((X) * 4) + ((n) - 1) * 0x0020)) // X must be either A or B +#define IFXMIPS_GPTU_RUN(n, X) ((volatile u32*)(IFXMIPS_GPTU + 0x0018 + ((X) * 4) + ((n) - 1) * 0x0020)) // X must be either A or B +#define IFXMIPS_GPTU_RELOAD(n, X) ((volatile u32*)(IFXMIPS_GPTU + 0x0020 + ((X) * 4) + ((n) - 1) * 0x0020)) // X must be either A or B +#define IFXMIPS_GPTU_COUNT(n, X) ((volatile u32*)(IFXMIPS_GPTU + 0x0028 + ((X) * 4) + ((n) - 1) * 0x0020)) // X must be either A or B +#define IFXMIPS_GPTU_IRNEN ((volatile u32*)(IFXMIPS_GPTU + 0x00F4)) +#define IFXMIPS_GPTU_IRNICR ((volatile u32*)(IFXMIPS_GPTU + 0x00F8)) +#define IFXMIPS_GPTU_IRNCR ((volatile u32*)(IFXMIPS_GPTU + 0x00FC)) + +/* + * Clock Control Register + */ +#define GPTU_CLC_SMC GET_BITS(*IFXMIPS_GPTU_CLC, 23, 16) +#define GPTU_CLC_RMC GET_BITS(*IFXMIPS_GPTU_CLC, 15, 8) +#define GPTU_CLC_FSOE (*IFXMIPS_GPTU_CLC & (1 << 5)) +#define GPTU_CLC_EDIS (*IFXMIPS_GPTU_CLC & (1 << 3)) +#define GPTU_CLC_SPEN (*IFXMIPS_GPTU_CLC & (1 << 2)) +#define GPTU_CLC_DISS (*IFXMIPS_GPTU_CLC & (1 << 1)) +#define GPTU_CLC_DISR (*IFXMIPS_GPTU_CLC & (1 << 0)) + +#define GPTU_CLC_SMC_SET(value) SET_BITS(0, 23, 16, (value)) +#define GPTU_CLC_RMC_SET(value) SET_BITS(0, 15, 8, (value)) +#define GPTU_CLC_FSOE_SET(value) ((value) ? (1 << 5) : 0) +#define GPTU_CLC_SBWE_SET(value) ((value) ? (1 << 4) : 0) +#define GPTU_CLC_EDIS_SET(value) ((value) ? (1 << 3) : 0) +#define GPTU_CLC_SPEN_SET(value) ((value) ? (1 << 2) : 0) +#define GPTU_CLC_DISR_SET(value) ((value) ? (1 << 0) : 0) + +/* + * ID Register + */ +#define GPTU_ID_ID GET_BITS(*IFXMIPS_GPTU_ID, 15, 8) +#define GPTU_ID_CFG GET_BITS(*IFXMIPS_GPTU_ID, 7, 5) +#define GPTU_ID_REV GET_BITS(*IFXMIPS_GPTU_ID, 4, 0) + +/* + * Control Register of Timer/Counter nX + * n is the index of block (1 based index) + * X is either A or B + */ +#define GPTU_CON_SRC_EG(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 10)) +#define GPTU_CON_SRC_EXT(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 9)) +#define GPTU_CON_SYNC(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 8)) +#define GPTU_CON_EDGE(n, X) GET_BITS(*IFXMIPS_GPTU_CON(n, X), 7, 6) +#define GPTU_CON_INV(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 5)) +#define GPTU_CON_EXT(n, X) (*IFXMIPS_GPTU_CON(n, A) & (1 << 4)) // Timer/Counter B does not have this bit +#define GPTU_CON_STP(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 3)) +#define GPTU_CON_CNT(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 2)) +#define GPTU_CON_DIR(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 1)) +#define GPTU_CON_EN(n, X) (*IFXMIPS_GPTU_CON(n, X) & (1 << 0)) + +#define GPTU_CON_SRC_EG_SET(value) ((value) ? 0 : (1 << 10)) +#define GPTU_CON_SRC_EXT_SET(value) ((value) ? (1 << 9) : 0) +#define GPTU_CON_SYNC_SET(value) ((value) ? (1 << 8) : 0) +#define GPTU_CON_EDGE_SET(value) SET_BITS(0, 7, 6, (value)) +#define GPTU_CON_INV_SET(value) ((value) ? (1 << 5) : 0) +#define GPTU_CON_EXT_SET(value) ((value) ? (1 << 4) : 0) +#define GPTU_CON_STP_SET(value) ((value) ? (1 << 3) : 0) +#define GPTU_CON_CNT_SET(value) ((value) ? (1 << 2) : 0) +#define GPTU_CON_DIR_SET(value) ((value) ? (1 << 1) : 0) + +#define GPTU_RUN_RL_SET(value) ((value) ? (1 << 2) : 0) +#define GPTU_RUN_CEN_SET(value) ((value) ? (1 << 1) : 0) +#define GPTU_RUN_SEN_SET(value) ((value) ? (1 << 0) : 0) + +#define GPTU_IRNEN_TC_SET(n, X, value) ((value) ? (1 << (((n) - 1) * 2 + (X))) : 0) +#define GPTU_IRNCR_TC_SET(n, X, value) ((value) ? (1 << (((n) - 1) * 2 + (X))) : 0) + +#define TIMER_FLAG_MASK_SIZE(x) (x & 0x0001) +#define TIMER_FLAG_MASK_TYPE(x) (x & 0x0002) +#define TIMER_FLAG_MASK_STOP(x) (x & 0x0004) +#define TIMER_FLAG_MASK_DIR(x) (x & 0x0008) +#define TIMER_FLAG_NONE_EDGE 0x0000 +#define TIMER_FLAG_MASK_EDGE(x) (x & 0x0030) +#define TIMER_FLAG_REAL 0x0000 +#define TIMER_FLAG_INVERT 0x0040 +#define TIMER_FLAG_MASK_INVERT(x) (x & 0x0040) +#define TIMER_FLAG_MASK_TRIGGER(x) (x & 0x0070) +#define TIMER_FLAG_MASK_SYNC(x) (x & 0x0080) +#define TIMER_FLAG_CALLBACK_IN_HB 0x0200 +#define TIMER_FLAG_MASK_HANDLE(x) (x & 0x0300) +#define TIMER_FLAG_MASK_SRC(x) (x & 0x1000) + +struct timer_dev_timer { + unsigned int f_irq_on; + unsigned int irq; + unsigned int flag; + unsigned long arg1; + unsigned long arg2; +}; + +struct timer_dev { + struct mutex gptu_mutex; + unsigned int number_of_timers; + unsigned int occupation; + unsigned int f_gptu_on; + struct timer_dev_timer timer[MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2]; +}; + +static int gptu_ioctl(struct inode *, struct file *, unsigned int, unsigned long); +static int gptu_open(struct inode *, struct file *); +static int gptu_release(struct inode *, struct file *); + +static struct file_operations gptu_fops = { + .owner = THIS_MODULE, + .ioctl = gptu_ioctl, + .open = gptu_open, + .release = gptu_release +}; + +static struct miscdevice gptu_miscdev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "gptu", + .fops = &gptu_fops, +}; + +static struct timer_dev timer_dev; + + +static irqreturn_t +timer_irq_handler(int irq, void *p) +{ + unsigned int timer; + unsigned int flag; + struct timer_dev_timer *dev_timer = (struct timer_dev_timer*) p; + + timer = irq - TIMER_INTERRUPT; + if(timer < timer_dev.number_of_timers && dev_timer == &timer_dev.timer[timer]) + { + /* Clear interrupt. */ + ifxmips_w32(1 << timer, IFXMIPS_GPTU_IRNCR); + + /* Call user hanler or signal. */ + flag = dev_timer->flag; + if (!(timer & 0x01) || TIMER_FLAG_MASK_SIZE (flag) == TIMER_FLAG_16BIT) + { /* 16-bit timer or timer A of 32-bit timer */ + switch(TIMER_FLAG_MASK_HANDLE (flag)) + { + case TIMER_FLAG_CALLBACK_IN_IRQ: + case TIMER_FLAG_CALLBACK_IN_HB: + if (dev_timer->arg1) + (*(timer_callback) dev_timer->arg1) (dev_timer->arg2); + break; + case TIMER_FLAG_SIGNAL: + send_sig ((int) dev_timer->arg2, (struct task_struct *) dev_timer->arg1, 0); + break; + } + } + } + return IRQ_HANDLED; +} + +static inline void +ifxmips_enable_gptu(void) +{ + ifxmips_pmu_enable(IFXMIPS_PMU_PWDCR_GPT); + + /* Set divider as 1, disable write protection for SPEN, enable module. */ + *IFXMIPS_GPTU_CLC = + GPTU_CLC_SMC_SET(0x00) | GPTU_CLC_RMC_SET(0x01) | GPTU_CLC_FSOE_SET(0) | + GPTU_CLC_SBWE_SET(1) | GPTU_CLC_EDIS_SET(0) | GPTU_CLC_SPEN_SET(0) | GPTU_CLC_DISR_SET(0); +} + +static inline void +ifxmips_disable_gptu(void) +{ + ifxmips_w32(0x00, IFXMIPS_GPTU_IRNEN); + ifxmips_w32(0xfff, IFXMIPS_GPTU_IRNCR); + + /* Set divider as 0, enable write protection for SPEN, disable module. */ + *IFXMIPS_GPTU_CLC = + GPTU_CLC_SMC_SET (0x00) | GPTU_CLC_RMC_SET (0x00) | GPTU_CLC_FSOE_SET (0) | + GPTU_CLC_SBWE_SET (0) | GPTU_CLC_EDIS_SET (0) | GPTU_CLC_SPEN_SET (0) | GPTU_CLC_DISR_SET (1); + + ifxmips_pmu_disable(IFXMIPS_PMU_PWDCR_GPT); +} + +int +ifxmips_request_timer(unsigned int timer, unsigned int flag, unsigned long value, + unsigned long arg1, unsigned long arg2) +{ + int ret = 0; + unsigned int con_reg, irnen_reg; + int n, X; + + if(timer >= FIRST_TIMER + timer_dev.number_of_timers) + return -EINVAL; + + printk(KERN_INFO "request_timer(%d, 0x%08X, %lu)...", (u32)timer, (u32)flag, value); + + if(TIMER_FLAG_MASK_SIZE(flag) == TIMER_FLAG_16BIT) + value &= 0xFFFF; + else + timer &= ~0x01; + + mutex_lock(&timer_dev.gptu_mutex); + + /* + * Allocate timer. + */ + if (timer < FIRST_TIMER) { + unsigned int mask; + unsigned int shift; + unsigned int offset = TIMER2A;/* This takes care of TIMER1B which is the only choice for Voice TAPI system */ + + /* + * Pick up a free timer. + */ + if (TIMER_FLAG_MASK_SIZE (flag) == TIMER_FLAG_16BIT) { + mask = 1 << offset; + shift = 1; + } + else { + mask = 3 << offset; + shift = 2; + } + for (timer = offset; + timer < offset + timer_dev.number_of_timers; + timer += shift, mask <<= shift) + if (!(timer_dev.occupation & mask)) { + timer_dev.occupation |= mask; + break; + } + if (timer >= offset + timer_dev.number_of_timers) { + printk("failed![%d]\n", __LINE__); + mutex_unlock(&timer_dev.gptu_mutex); + return -EINVAL; + } + else + ret = timer; + } + else { + register unsigned int mask; + + /* + * Check if the requested timer is free. + */ + mask = (TIMER_FLAG_MASK_SIZE (flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer; + if ((timer_dev.occupation & mask)) { + printk("failed![%d] mask %#x, timer_dev.occupation %#x\n", __LINE__, mask, timer_dev.occupation); + mutex_unlock(&timer_dev.gptu_mutex); + return -EBUSY; + } + else { + timer_dev.occupation |= mask; + ret = 0; + } + } + + /* + * Prepare control register value. + */ + switch (TIMER_FLAG_MASK_EDGE (flag)) { + default: + case TIMER_FLAG_NONE_EDGE: + con_reg = GPTU_CON_EDGE_SET (0x00); + break; + case TIMER_FLAG_RISE_EDGE: + con_reg = GPTU_CON_EDGE_SET (0x01); + break; + case TIMER_FLAG_FALL_EDGE: + con_reg = GPTU_CON_EDGE_SET (0x02); + break; + case TIMER_FLAG_ANY_EDGE: + con_reg = GPTU_CON_EDGE_SET (0x03); + break; + } + if (TIMER_FLAG_MASK_TYPE (flag) == TIMER_FLAG_TIMER) + con_reg |= + TIMER_FLAG_MASK_SRC (flag) == + TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET (1) : + GPTU_CON_SRC_EXT_SET (0); + else + con_reg |= + TIMER_FLAG_MASK_SRC (flag) == + TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET (1) : + GPTU_CON_SRC_EG_SET (0); + con_reg |= + TIMER_FLAG_MASK_SYNC (flag) == + TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET (0) : + GPTU_CON_SYNC_SET (1); + con_reg |= + TIMER_FLAG_MASK_INVERT (flag) == + TIMER_FLAG_REAL ? GPTU_CON_INV_SET (0) : GPTU_CON_INV_SET (1); + con_reg |= + TIMER_FLAG_MASK_SIZE (flag) == + TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET (0) : + GPTU_CON_EXT_SET (1); + con_reg |= + TIMER_FLAG_MASK_STOP (flag) == + TIMER_FLAG_ONCE ? GPTU_CON_STP_SET (1) : GPTU_CON_STP_SET (0); + con_reg |= + TIMER_FLAG_MASK_TYPE (flag) == + TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET (0) : + GPTU_CON_CNT_SET (1); + con_reg |= + TIMER_FLAG_MASK_DIR (flag) == + TIMER_FLAG_UP ? GPTU_CON_DIR_SET (1) : GPTU_CON_DIR_SET (0); + + /* + * Fill up running data. + */ + timer_dev.timer[timer - FIRST_TIMER].flag = flag; + timer_dev.timer[timer - FIRST_TIMER].arg1 = arg1; + timer_dev.timer[timer - FIRST_TIMER].arg2 = arg2; + if (TIMER_FLAG_MASK_SIZE (flag) != TIMER_FLAG_16BIT) + timer_dev.timer[timer - FIRST_TIMER + 1].flag = flag; + + /* + * Enable GPTU module. + */ + if (!timer_dev.f_gptu_on) { + ifxmips_enable_gptu (); + timer_dev.f_gptu_on = 1; + } + + /* + * Enable IRQ. + */ + if (TIMER_FLAG_MASK_HANDLE (flag) != TIMER_FLAG_NO_HANDLE) { + if (TIMER_FLAG_MASK_HANDLE (flag) == TIMER_FLAG_SIGNAL) + timer_dev.timer[timer - FIRST_TIMER].arg1 = + (unsigned long) find_task_by_pid ((int) arg1); + + irnen_reg = 1 << (timer - FIRST_TIMER); + + if (TIMER_FLAG_MASK_HANDLE (flag) == TIMER_FLAG_SIGNAL + || (TIMER_FLAG_MASK_HANDLE (flag) == + TIMER_FLAG_CALLBACK_IN_IRQ + && timer_dev.timer[timer - FIRST_TIMER].arg1)) { + enable_irq (timer_dev.timer[timer - FIRST_TIMER].irq); + timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 1; + } + } + else + irnen_reg = 0; + + /* + * Write config register, reload value and enable interrupt. + */ + n = timer >> 1; + X = timer & 0x01; + *IFXMIPS_GPTU_CON (n, X) = con_reg; + *IFXMIPS_GPTU_RELOAD (n, X) = value; +// printk("reload value = %d\n", (u32)value); + *IFXMIPS_GPTU_IRNEN |= irnen_reg; + + mutex_unlock(&timer_dev.gptu_mutex); + printk("successful!\n"); + return ret; +} + +int +ifxmips_free_timer(unsigned int timer) +{ + unsigned int flag; + unsigned int mask; + int n, X; + + if(!timer_dev.f_gptu_on) + return -EINVAL; + + if(timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers) + return -EINVAL; + + mutex_lock(&timer_dev.gptu_mutex); + + flag = timer_dev.timer[timer - FIRST_TIMER].flag; + if(TIMER_FLAG_MASK_SIZE (flag) != TIMER_FLAG_16BIT) + timer &= ~0x01; + + mask = (TIMER_FLAG_MASK_SIZE (flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer; + if(((timer_dev.occupation & mask) ^ mask)) + { + mutex_unlock(&timer_dev.gptu_mutex); + return -EINVAL; + } + + n = timer >> 1; + X = timer & 0x01; + + if(GPTU_CON_EN (n, X)) + *IFXMIPS_GPTU_RUN (n, X) = GPTU_RUN_CEN_SET (1); + + *IFXMIPS_GPTU_IRNEN &= ~GPTU_IRNEN_TC_SET (n, X, 1); + *IFXMIPS_GPTU_IRNCR |= GPTU_IRNCR_TC_SET (n, X, 1); + + if(timer_dev.timer[timer - FIRST_TIMER].f_irq_on) { + disable_irq (timer_dev.timer[timer - FIRST_TIMER].irq); + timer_dev.timer[timer - FIRST_TIMER].f_irq_on = 0; + } + + timer_dev.occupation &= ~mask; + if(!timer_dev.occupation && timer_dev.f_gptu_on) + { + ifxmips_disable_gptu(); + timer_dev.f_gptu_on = 0; + } + + mutex_unlock(&timer_dev.gptu_mutex); + + return 0; +} + +int +ifxmips_start_timer(unsigned int timer, int is_resume) +{ + unsigned int flag; + unsigned int mask; + int n, X; + + if(!timer_dev.f_gptu_on) + return -EINVAL; + + if(timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers) + return -EINVAL; + + mutex_lock(&timer_dev.gptu_mutex); + + flag = timer_dev.timer[timer - FIRST_TIMER].flag; + if(TIMER_FLAG_MASK_SIZE (flag) != TIMER_FLAG_16BIT) + timer &= ~0x01; + + mask = (TIMER_FLAG_MASK_SIZE (flag) == + TIMER_FLAG_16BIT ? 1 : 3) << timer; + if(((timer_dev.occupation & mask) ^ mask)) + { + mutex_unlock(&timer_dev.gptu_mutex); + return -EINVAL; + } + + n = timer >> 1; + X = timer & 0x01; + + *IFXMIPS_GPTU_RUN (n, X) = GPTU_RUN_RL_SET (!is_resume) | GPTU_RUN_SEN_SET (1); + + mutex_unlock(&timer_dev.gptu_mutex); + + return 0; +} + +int +ifxmips_stop_timer(unsigned int timer) +{ + unsigned int flag; + unsigned int mask; + int n, X; + + if (!timer_dev.f_gptu_on) + return -EINVAL; + + if (timer < FIRST_TIMER + || timer >= FIRST_TIMER + timer_dev.number_of_timers) + return -EINVAL; + + mutex_lock(&timer_dev.gptu_mutex); + + flag = timer_dev.timer[timer - FIRST_TIMER].flag; + if(TIMER_FLAG_MASK_SIZE(flag) != TIMER_FLAG_16BIT) + timer &= ~0x01; + + mask = (TIMER_FLAG_MASK_SIZE (flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer; + if(((timer_dev.occupation & mask) ^ mask)) + { + mutex_unlock(&timer_dev.gptu_mutex); + return -EINVAL; + } + + n = timer >> 1; + X = timer & 0x01; + + *IFXMIPS_GPTU_RUN (n, X) = GPTU_RUN_CEN_SET (1); + + mutex_unlock(&timer_dev.gptu_mutex); + + return 0; +} + +int +ifxmips_reset_counter_flags(u32 timer, u32 flags) +{ + unsigned int oflag; + unsigned int mask, con_reg; + int n, X; + + if(!timer_dev.f_gptu_on) + return -EINVAL; + + if(timer < FIRST_TIMER || timer >= FIRST_TIMER + timer_dev.number_of_timers) + return -EINVAL; + + mutex_lock(&timer_dev.gptu_mutex); + + oflag = timer_dev.timer[timer - FIRST_TIMER].flag; + if(TIMER_FLAG_MASK_SIZE (oflag) != TIMER_FLAG_16BIT) + timer &= ~0x01; + + mask = (TIMER_FLAG_MASK_SIZE (oflag) == TIMER_FLAG_16BIT ? 1 : 3) << timer; + if(((timer_dev.occupation & mask) ^ mask)) + { + mutex_unlock(&timer_dev.gptu_mutex); + return -EINVAL; + } + + switch(TIMER_FLAG_MASK_EDGE (flags)) + { + default: + case TIMER_FLAG_NONE_EDGE: + con_reg = GPTU_CON_EDGE_SET(0x00); + break; + case TIMER_FLAG_RISE_EDGE: + con_reg = GPTU_CON_EDGE_SET(0x01); + break; + case TIMER_FLAG_FALL_EDGE: + con_reg = GPTU_CON_EDGE_SET(0x02); + break; + case TIMER_FLAG_ANY_EDGE: + con_reg = GPTU_CON_EDGE_SET(0x03); + break; + } + if(TIMER_FLAG_MASK_TYPE (flags) == TIMER_FLAG_TIMER) + con_reg |= TIMER_FLAG_MASK_SRC (flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EXT_SET (1) : GPTU_CON_SRC_EXT_SET (0); + else + con_reg |= TIMER_FLAG_MASK_SRC (flags) == TIMER_FLAG_EXT_SRC ? GPTU_CON_SRC_EG_SET (1) : GPTU_CON_SRC_EG_SET (0); + con_reg |= TIMER_FLAG_MASK_SYNC (flags) == TIMER_FLAG_UNSYNC ? GPTU_CON_SYNC_SET (0) : GPTU_CON_SYNC_SET (1); + con_reg |= TIMER_FLAG_MASK_INVERT (flags) == TIMER_FLAG_REAL ? GPTU_CON_INV_SET (0) : GPTU_CON_INV_SET (1); + con_reg |= TIMER_FLAG_MASK_SIZE (flags) == TIMER_FLAG_16BIT ? GPTU_CON_EXT_SET (0) : GPTU_CON_EXT_SET (1); + con_reg |= TIMER_FLAG_MASK_STOP (flags) == TIMER_FLAG_ONCE ? GPTU_CON_STP_SET (1) : GPTU_CON_STP_SET (0); + con_reg |= TIMER_FLAG_MASK_TYPE (flags) == TIMER_FLAG_TIMER ? GPTU_CON_CNT_SET (0) : GPTU_CON_CNT_SET (1); + con_reg |= TIMER_FLAG_MASK_DIR (flags) == TIMER_FLAG_UP ? GPTU_CON_DIR_SET (1) : GPTU_CON_DIR_SET (0); + + timer_dev.timer[timer - FIRST_TIMER].flag = flags; + if(TIMER_FLAG_MASK_SIZE(flags) != TIMER_FLAG_16BIT) + timer_dev.timer[timer - FIRST_TIMER + 1].flag = flags; + + n = timer >> 1; + X = timer & 0x01; + + *IFXMIPS_GPTU_CON(n, X) = con_reg; + smp_wmb(); + printk(KERN_INFO "[%s]: counter%d oflags %#x, nflags %#x, GPTU_CON %#x\n", __func__, timer, oflag, flags, *IFXMIPS_GPTU_CON (n, X)); + mutex_unlock(&timer_dev.gptu_mutex); + return 0; +} +EXPORT_SYMBOL(ifxmips_reset_counter_flags); + +inline int +ifxmips_get_count_value(unsigned int timer, unsigned long *value) +{ + + unsigned int flag; + unsigned int mask; + int n, X; + + if(!timer_dev.f_gptu_on) + return -EINVAL; + + if(timer < FIRST_TIMER + || timer >= FIRST_TIMER + timer_dev.number_of_timers) + return -EINVAL; + + mutex_lock(&timer_dev.gptu_mutex); + + flag = timer_dev.timer[timer - FIRST_TIMER].flag; + if(TIMER_FLAG_MASK_SIZE (flag) != TIMER_FLAG_16BIT) + timer &= ~0x01; + + mask = (TIMER_FLAG_MASK_SIZE (flag) == TIMER_FLAG_16BIT ? 1 : 3) << timer; + if (((timer_dev.occupation & mask) ^ mask)) + { + mutex_unlock(&timer_dev.gptu_mutex); + return -EINVAL; + } + + n = timer >> 1; + X = timer & 0x01; + + *value = *IFXMIPS_GPTU_COUNT (n, X); + + mutex_unlock(&timer_dev.gptu_mutex); + + return 0; +} + +u32 +ifxmips_cal_divider(unsigned long freq) +{ + u64 module_freq, fpi = cgu_get_fpi_bus_clock(2); + u32 clock_divider = 1; + module_freq = fpi * 1000; + do_div(module_freq, clock_divider * freq); + return module_freq; +} + +int +ifxmips_set_timer (unsigned int timer, unsigned int freq, int is_cyclic, + int is_ext_src, unsigned int handle_flag, unsigned long arg1, + unsigned long arg2) +{ + unsigned long divider; + unsigned int flag; + + divider = ifxmips_cal_divider(freq); + if (divider == 0) + return -EINVAL; + flag = ((divider & ~0xFFFF) ? TIMER_FLAG_32BIT : TIMER_FLAG_16BIT) + | (is_cyclic ? TIMER_FLAG_CYCLIC : TIMER_FLAG_ONCE) + | (is_ext_src ? TIMER_FLAG_EXT_SRC : TIMER_FLAG_INT_SRC) + | TIMER_FLAG_TIMER | TIMER_FLAG_DOWN + | TIMER_FLAG_MASK_HANDLE (handle_flag); + + printk(KERN_INFO "set_timer(%d, %d), divider = %lu\n", timer, freq, divider); + return ifxmips_request_timer (timer, flag, divider, arg1, arg2); +} + +int +ifxmips_set_counter(unsigned int timer, unsigned int flag, u32 reload, unsigned long arg1, unsigned long arg2) +{ + printk(KERN_INFO "set_counter(%d, %#x, %d)\n", timer, flag, reload); + return ifxmips_request_timer(timer, flag, reload, arg1, arg2); +} + +static int +gptu_ioctl (struct inode *inode, struct file *file, unsigned int cmd, + unsigned long arg) +{ + int ret; + struct gptu_ioctl_param param; + + if (!access_ok (VERIFY_READ, arg, sizeof (struct gptu_ioctl_param))) + return -EFAULT; + copy_from_user (¶m, (void *) arg, sizeof (param)); + + if ((((cmd == GPTU_REQUEST_TIMER || cmd == GPTU_SET_TIMER + || GPTU_SET_COUNTER) && param.timer < 2) + || cmd == GPTU_GET_COUNT_VALUE || cmd == GPTU_CALCULATE_DIVIDER) + && !access_ok (VERIFY_WRITE, arg, + sizeof (struct gptu_ioctl_param))) + return -EFAULT; + + switch (cmd) { + case GPTU_REQUEST_TIMER: + ret = ifxmips_request_timer (param.timer, param.flag, param.value, + (unsigned long) param.pid, + (unsigned long) param.sig); + if (ret > 0) { + copy_to_user (&((struct gptu_ioctl_param *) arg)-> + timer, &ret, sizeof (&ret)); + ret = 0; + } + break; + case GPTU_FREE_TIMER: + ret = ifxmips_free_timer (param.timer); + break; + case GPTU_START_TIMER: + ret = ifxmips_start_timer (param.timer, param.flag); + break; + case GPTU_STOP_TIMER: + ret = ifxmips_stop_timer (param.timer); + break; + case GPTU_GET_COUNT_VALUE: + ret = ifxmips_get_count_value (param.timer, ¶m.value); + if (!ret) + copy_to_user (&((struct gptu_ioctl_param *) arg)-> + value, ¶m.value, + sizeof (param.value)); + break; + case GPTU_CALCULATE_DIVIDER: + param.value = ifxmips_cal_divider (param.value); + if (param.value == 0) + ret = -EINVAL; + else { + copy_to_user (&((struct gptu_ioctl_param *) arg)-> + value, ¶m.value, + sizeof (param.value)); + ret = 0; + } + break; + case GPTU_SET_TIMER: + ret = ifxmips_set_timer (param.timer, param.value, + TIMER_FLAG_MASK_STOP (param.flag) != + TIMER_FLAG_ONCE ? 1 : 0, + TIMER_FLAG_MASK_SRC (param.flag) == + TIMER_FLAG_EXT_SRC ? 1 : 0, + TIMER_FLAG_MASK_HANDLE (param.flag) == + TIMER_FLAG_SIGNAL ? TIMER_FLAG_SIGNAL : + TIMER_FLAG_NO_HANDLE, + (unsigned long) param.pid, + (unsigned long) param.sig); + if (ret > 0) { + copy_to_user (&((struct gptu_ioctl_param *) arg)-> + timer, &ret, sizeof (&ret)); + ret = 0; + } + break; + case GPTU_SET_COUNTER: + ifxmips_set_counter (param.timer, param.flag, param.value, 0, 0); + if (ret > 0) { + copy_to_user (&((struct gptu_ioctl_param *) arg)-> + timer, &ret, sizeof (&ret)); + ret = 0; + } + break; + default: + ret = -ENOTTY; + } + + return ret; +} + +static int +gptu_open(struct inode *inode, struct file *file) +{ + return 0; +} + +static int +gptu_release(struct inode *inode, struct file *file) +{ + return 0; +} +int __init +ifxmips_gptu_init(void) +{ + int ret; + unsigned int i; + + ifxmips_w32(0, IFXMIPS_GPTU_IRNEN); + ifxmips_w32(0xfff, IFXMIPS_GPTU_IRNCR); + + memset(&timer_dev, 0, sizeof (timer_dev)); + mutex_init(&timer_dev.gptu_mutex); + + ifxmips_enable_gptu(); + timer_dev.number_of_timers = GPTU_ID_CFG * 2; + ifxmips_disable_gptu (); + if(timer_dev.number_of_timers > MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2) + timer_dev.number_of_timers = MAX_NUM_OF_32BIT_TIMER_BLOCKS * 2; + printk (KERN_INFO "gptu: totally %d 16-bit timers/counters\n", timer_dev.number_of_timers); + + ret = misc_register(&gptu_miscdev); + if(ret) + { + printk(KERN_ERR "gptu: can't misc_register, get error %d\n", -ret); + return ret; + } else { + printk(KERN_INFO "gptu: misc_register on minor %d\n", gptu_miscdev.minor); + } + + for(i = 0; i < timer_dev.number_of_timers; i++) + { + ret = request_irq (TIMER_INTERRUPT + i, timer_irq_handler, IRQF_TIMER, gptu_miscdev.name, &timer_dev.timer[i]); + if(ret) + { + for (; i >= 0; i--) + free_irq (TIMER_INTERRUPT + i, &timer_dev.timer[i]); + misc_deregister(&gptu_miscdev); + printk(KERN_ERR "gptu: failed in requesting irq (%d), get error %d\n", i, -ret); + return ret; + } else { + timer_dev.timer[i].irq = TIMER_INTERRUPT + i; + disable_irq(timer_dev.timer[i].irq); + printk(KERN_INFO "gptu: succeeded to request irq %d\n", timer_dev.timer[i].irq); + } + } + + return 0; +} + +void __exit +ifxmips_gptu_exit (void) +{ + unsigned int i; + + for(i = 0; i < timer_dev.number_of_timers; i++) + { + if(timer_dev.timer[i].f_irq_on) + disable_irq (timer_dev.timer[i].irq); + free_irq(timer_dev.timer[i].irq, &timer_dev.timer[i]); + } + + ifxmips_disable_gptu(); + + misc_deregister(&gptu_miscdev); +} + +EXPORT_SYMBOL(ifxmips_request_timer); +EXPORT_SYMBOL(ifxmips_free_timer); +EXPORT_SYMBOL(ifxmips_start_timer); +EXPORT_SYMBOL(ifxmips_stop_timer); +EXPORT_SYMBOL(ifxmips_get_count_value); +EXPORT_SYMBOL(ifxmips_cal_divider); +EXPORT_SYMBOL(ifxmips_set_timer); +EXPORT_SYMBOL(ifxmips_set_counter); + +module_init(ifxmips_gptu_init); +module_exit(ifxmips_gptu_exit); |