John Crispin
16 years ago
parent
cb076ccb14
commit
18ad6da063
@ -0,0 +1,396 @@
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/*
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* arch/mips/ifxmips/cgu.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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*
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* Copyright (C) 2007 Xu Liang, infineon
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*
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* Rewrite of Infineon IFXMips code
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* Copyright (C) 2008 John Crispin <blogic@openwrt.org>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/miscdevice.h>
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#include <linux/init.h>
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#include <asm/uaccess.h>
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#include <asm/unistd.h>
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#include <asm/irq.h>
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#include <asm/div64.h>
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#include <linux/errno.h>
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#include <asm/ifxmips/ifxmips.h>
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#define FIX_FOR_36M_CRYSTAL 1
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#define BASIC_INPUT_CLOCK_FREQUENCY_1 35328000
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#define BASIC_INPUT_CLOCK_FREQUENCY_2 36000000
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#define BASIS_INPUT_CRYSTAL_USB 12000000
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#define GET_BITS(x, msb, lsb) (((x) & ((1 << ((msb) + 1)) - 1)) >> (lsb))
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#define SET_BITS(x, msb, lsb, value) (((x) & ~(((1 << ((msb) + 1)) - 1) ^ ((1 << (lsb)) - 1))) | (((value) & ((1 << (1 + (msb) - (lsb))) - 1)) << (lsb)))
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#define CGU_PLL0_PHASE_DIVIDER_ENABLE (*IFXMIPS_CGU_PLL0_CFG & (1 << 31))
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#define CGU_PLL0_BYPASS (*IFXMIPS_CGU_PLL0_CFG & (1 << 30))
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#define CGU_PLL0_SRC (*IFXMIPS_CGU_PLL0_CFG & (1 << 29))
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#define CGU_PLL0_CFG_DSMSEL (*IFXMIPS_CGU_PLL0_CFG & (1 << 28))
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#define CGU_PLL0_CFG_FRAC_EN (*IFXMIPS_CGU_PLL0_CFG & (1 << 27))
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#define CGU_PLL0_CFG_PLLK GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 26, 17)
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#define CGU_PLL0_CFG_PLLN GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 12, 6)
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#define CGU_PLL0_CFG_PLLM GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 5, 2)
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#define CGU_PLL1_SRC (*IFXMIPS_CGU_PLL1_CFG & (1 << 31))
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#define CGU_PLL1_BYPASS (*IFXMIPS_CGU_PLL1_CFG & (1 << 30))
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#define CGU_PLL1_CFG_DSMSEL (*IFXMIPS_CGU_PLL1_CFG & (1 << 28))
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#define CGU_PLL1_CFG_FRAC_EN (*IFXMIPS_CGU_PLL1_CFG & (1 << 27))
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#define CGU_PLL1_CFG_PLLK GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 26, 17)
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#define CGU_PLL1_CFG_PLLN GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 12, 6)
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#define CGU_PLL1_CFG_PLLM GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 5, 2)
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#define CGU_PLL2_PHASE_DIVIDER_ENABLE (*IFXMIPS_CGU_PLL2_CFG & (1 << 20))
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#define CGU_PLL2_BYPASS (*IFXMIPS_CGU_PLL2_CFG & (1 << 19))
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#define CGU_PLL2_SRC GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 18, 17)
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#define CGU_PLL2_CFG_INPUT_DIV GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 16, 13)
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#define CGU_PLL2_CFG_PLLN GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 12, 6)
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#define CGU_PLL2_CFG_PLLM GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 5, 2)
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#define CGU_SYS_PPESEL GET_BITS(*IFXMIPS_CGU_SYS, 8, 7)
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#define CGU_SYS_FPI_SEL (*IFXMIPS_CGU_SYS & (1 << 6))
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#define CGU_SYS_CPU1SEL GET_BITS(*IFXMIPS_CGU_SYS, 5, 4)
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#define CGU_SYS_CPU0SEL GET_BITS(*IFXMIPS_CGU_SYS, 3, 2)
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#define CGU_SYS_DDR_SEL GET_BITS(*IFXMIPS_CGU_SYS, 1, 0)
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#define CGU_IF_CLK_PCI_CLK GET_BITS(*IFXMIPS_CGU_IF_CLK, 23, 20)
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#define CGU_IF_CLK_USBSEL GET_BITS(*IFXMIPS_CGU_IF_CLK, 5, 4)
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#define CGU_IF_CLK_MIISEL GET_BITS(*IFXMIPS_CGU_IF_CLK, 1, 0)
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static u32 cgu_get_pll0_fdiv(void);
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static inline u32 get_input_clock(int pll)
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{
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switch(pll)
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{
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case 0:
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if(CGU_PLL0_SRC)
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return BASIS_INPUT_CRYSTAL_USB;
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else if(CGU_PLL0_PHASE_DIVIDER_ENABLE)
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return BASIC_INPUT_CLOCK_FREQUENCY_1;
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else
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return BASIC_INPUT_CLOCK_FREQUENCY_2;
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case 1:
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if(CGU_PLL1_SRC)
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return BASIS_INPUT_CRYSTAL_USB;
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else if(CGU_PLL0_PHASE_DIVIDER_ENABLE)
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return BASIC_INPUT_CLOCK_FREQUENCY_1;
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else
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return BASIC_INPUT_CLOCK_FREQUENCY_2;
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case 2:
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switch(CGU_PLL2_SRC)
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{
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case 0:
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return cgu_get_pll0_fdiv();
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case 1:
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return CGU_PLL2_PHASE_DIVIDER_ENABLE ? BASIC_INPUT_CLOCK_FREQUENCY_1 : BASIC_INPUT_CLOCK_FREQUENCY_2;
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case 2:
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return BASIS_INPUT_CRYSTAL_USB;
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}
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default:
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return 0;
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}
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}
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static inline u32
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cal_dsm(int pll, u32 num, u32 den)
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{
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u64 res, clock = get_input_clock(pll);
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res = num * clock;
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do_div(res, den);
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return res;
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}
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static inline u32
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mash_dsm(int pll, u32 M, u32 N, u32 K)
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{
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u32 num = ((N + 1) << 10) + K;
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u32 den = (M + 1) << 10;
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return cal_dsm(pll, num, den);
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}
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static inline u32 ssff_dsm_1(int pll, u32 M, u32 N, u32 K)
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{
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u32 num = ((N + 1) << 11) + K + 512;
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u32 den = (M + 1) << 11;
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return cal_dsm(pll, num, den);
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}
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static inline u32 ssff_dsm_2(int pll, u32 M, u32 N, u32 K)
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{
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u32 num = K >= 512 ? ((N + 1) << 12) + K - 512 : ((N + 1) << 12) + K + 3584;
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u32 den = (M + 1) << 12;
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return cal_dsm(pll, num, den);
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}
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static inline u32 dsm(int pll, u32 M, u32 N, u32 K, u32 dsmsel, u32 phase_div_en)
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{
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if ( !dsmsel )
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return mash_dsm(pll, M, N, K);
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else if ( !phase_div_en )
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return mash_dsm(pll, M, N, K);
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else
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return ssff_dsm_2(pll, M, N, K);
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}
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static inline u32 cgu_get_pll0_fosc(void)
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{
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if(CGU_PLL0_BYPASS)
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return get_input_clock(0);
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else
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return !CGU_PLL0_CFG_FRAC_EN
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? dsm(0, CGU_PLL0_CFG_PLLM, CGU_PLL0_CFG_PLLN, 0, CGU_PLL0_CFG_DSMSEL, CGU_PLL0_PHASE_DIVIDER_ENABLE)
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: dsm(0, CGU_PLL0_CFG_PLLM, CGU_PLL0_CFG_PLLN, CGU_PLL0_CFG_PLLK, CGU_PLL0_CFG_DSMSEL, CGU_PLL0_PHASE_DIVIDER_ENABLE);
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}
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static inline u32 cgu_get_pll0_fps(int phase)
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{
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register u32 fps = cgu_get_pll0_fosc();
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switch ( phase )
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{
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case 1:
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/* 1.25 */
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fps = ((fps << 2) + 2) / 5;
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break;
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case 2:
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/* 1.5 */
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fps = ((fps << 1) + 1) / 3;
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break;
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}
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return fps;
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}
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static u32 cgu_get_pll0_fdiv(void)
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{
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register u32 div = CGU_PLL2_CFG_INPUT_DIV + 1;
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return (cgu_get_pll0_fosc() + (div >> 1)) / div;
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}
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static inline u32 cgu_get_pll1_fosc(void)
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{
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if(CGU_PLL1_BYPASS)
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return get_input_clock(1);
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else
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return !CGU_PLL1_CFG_FRAC_EN
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? dsm(1, CGU_PLL1_CFG_PLLM, CGU_PLL1_CFG_PLLN, 0, CGU_PLL1_CFG_DSMSEL, 0)
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: dsm(1, CGU_PLL1_CFG_PLLM, CGU_PLL1_CFG_PLLN, CGU_PLL1_CFG_PLLK, CGU_PLL1_CFG_DSMSEL, 0);
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}
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static inline u32 cgu_get_pll1_fps(void)
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{
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register u32 fps = cgu_get_pll1_fosc();
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return ((fps << 1) + 1) / 3;
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}
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static inline u32 cgu_get_pll1_fdiv(void)
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{
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return cgu_get_pll1_fosc();
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}
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static inline u32 cgu_get_pll2_fosc(void)
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{
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u64 res, clock = get_input_clock(2);
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if ( CGU_PLL2_BYPASS )
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return get_input_clock(2);
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res = (CGU_PLL2_CFG_PLLN + 1) * clock;
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do_div(res, CGU_PLL2_CFG_PLLM + 1);
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return res;
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}
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static inline u32 cgu_get_pll2_fps(int phase)
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{
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register u32 fps = cgu_get_pll2_fosc();
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switch ( phase )
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{
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case 1:
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/* 1.125 */
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fps = ((fps << 2) + 2) / 5; break;
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case 2:
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/* 1.25 */
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fps = ((fps << 3) + 4) / 9;
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}
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return fps;
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}
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static inline u32 cgu_get_pll2_fdiv(void)
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{
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register u32 div = CGU_IF_CLK_PCI_CLK + 1;
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return (cgu_get_pll2_fosc() + (div >> 1)) / div;
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}
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u32 cgu_get_mips_clock(int cpu)
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{
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register u32 ret = cgu_get_pll0_fosc();
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register u32 cpusel = cpu == 0 ? CGU_SYS_CPU0SEL : CGU_SYS_CPU1SEL;
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if ( cpusel == 0 )
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return ret;
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else if ( cpusel == 2 )
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ret <<= 1;
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switch ( CGU_SYS_DDR_SEL )
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{
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default:
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case 0:
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return (ret + 1) / 2;
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case 1:
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return (ret * 2 + 2) / 5;
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case 2:
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return (ret + 1) / 3;
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case 3:
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return (ret + 2) / 4;
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}
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}
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u32 cgu_get_cpu_clock(void)
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{
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return cgu_get_mips_clock(0);
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}
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u32 cgu_get_io_region_clock(void)
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{
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register u32 ret = cgu_get_pll0_fosc();
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switch ( CGU_SYS_DDR_SEL )
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{
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default:
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case 0:
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return (ret + 1) / 2;
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case 1:
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return (ret * 2 + 2) / 5;
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case 2:
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return (ret + 1) / 3;
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case 3:
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return (ret + 2) / 4;
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}
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}
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u32 cgu_get_fpi_bus_clock(int fpi)
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{
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register u32 ret = cgu_get_io_region_clock();
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if((fpi == 2) && (CGU_SYS_FPI_SEL))
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ret >>= 1;
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return ret;
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}
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u32 cgu_get_pp32_clock(void)
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{
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switch ( CGU_SYS_PPESEL )
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{
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default:
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case 0:
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return cgu_get_pll2_fps(1);
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case 1:
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return cgu_get_pll2_fps(2);
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case 2:
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return (cgu_get_pll2_fps(1) + 1) >> 1;
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case 3:
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return (cgu_get_pll2_fps(2) + 1) >> 1;
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}
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}
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u32 cgu_get_ethernet_clock(int mii)
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{
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switch ( CGU_IF_CLK_MIISEL )
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{
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case 0:
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return (cgu_get_pll2_fosc() + 3) / 12;
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case 1:
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return (cgu_get_pll2_fosc() + 3) / 6;
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case 2:
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return 50000000;
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case 3:
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return 25000000;
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}
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return 0;
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}
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u32 cgu_get_usb_clock(void)
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{
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switch ( CGU_IF_CLK_USBSEL )
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{
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case 0:
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return (cgu_get_pll2_fosc() + 12) / 25;
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case 1:
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return 12000000;
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case 2:
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return 12000000 / 4;
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case 3:
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return 12000000;
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}
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return 0;
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}
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u32 cgu_get_clockout(int clkout)
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{
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u32 fosc1 = cgu_get_pll1_fosc();
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u32 fosc2 = cgu_get_pll2_fosc();
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if ( clkout > 3 || clkout < 0 )
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return 0;
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switch ( ((u32)clkout << 2) | GET_BITS(*IFXMIPS_CGU_IF_CLK, 15 - clkout * 2, 14 - clkout * 2) )
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{
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case 0: /* 32.768KHz */
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case 15:
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return (fosc1 + 6000) / 12000;
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case 1: /* 1.536MHz */
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return (fosc1 + 128) / 256;
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case 2: /* 2.5MHz */
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return (fosc2 + 60) / 120;
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case 3: /* 12MHz */
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case 5:
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case 12:
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return (fosc2 + 12) / 25;
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case 4: /* 40MHz */
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return (cgu_get_pll2_fps(2) + 3) / 6;
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case 6: /* 24MHz */
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return (cgu_get_pll2_fps(2) + 5) / 10;
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case 7: /* 48MHz */
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return (cgu_get_pll2_fps(2) + 2) / 5;
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case 8: /* 25MHz */
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case 14:
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return (fosc2 + 6) / 12;
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case 9: /* 50MHz */
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case 13:
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return (fosc2 + 3) / 6;
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case 10:/* 30MHz */
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return (fosc2 + 5) / 10;
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case 11:/* 60MHz */
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return (fosc2 + 2) / 5;
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}
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return 0;
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}
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@ -0,0 +1,846 @@
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/miscdevice.h>
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#include <linux/init.h>
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#include <asm/uaccess.h>
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#include <asm/unistd.h>
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#include <asm/irq.h>
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#include <asm/div64.h>
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <asm/ifxmips/ifxmips.h>
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#include <asm/ifxmips/ifxmips_irq.h>
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#include <asm/ifxmips/ifxmips_cgu.h>
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#include <asm/ifxmips/ifxmips_gptu.h>
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#include <asm/ifxmips/ifxmips_pmu.h>
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#define MAX_NUM_OF_32BIT_TIMER_BLOCKS 6
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#ifdef TIMER1A
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#define FIRST_TIMER TIMER1A
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#else
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#define FIRST_TIMER 2
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#endif
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/*
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* GPTC divider is set or not.
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*/
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#define GPTU_CLC_RMC_IS_SET 0
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/*
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* Timer Interrupt (IRQ)
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*/
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#define TIMER_INTERRUPT INT_NUM_IM3_IRL0 + 22 // Must be adjusted when ICU driver is available
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/*
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* Bits Operation
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*/
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#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);
|
||||
@ -0,0 +1,11 @@
|
||||
#ifndef _IFXMIPS_CGU_H__
|
||||
#define _IFXMIPS_CGU_H__
|
||||
u32 cgu_get_mips_clock(int cpu);
|
||||
u32 cgu_get_cpu_clock(void);
|
||||
u32 cgu_get_io_region_clock(void);
|
||||
u32 cgu_get_fpi_bus_clock(int fpi);
|
||||
u32 cgu_get_pp32_clock(void);
|
||||
u32 cgu_get_ethernet_clock(int mii);
|
||||
u32 cgu_get_usb_clock(void);
|
||||
u32 cgu_get_clockout(int clkout);
|
||||
#endif
|
||||
@ -0,0 +1,169 @@
|
||||
#ifndef __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
|
||||
#define __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
|
||||
|
||||
|
||||
/******************************************************************************
|
||||
Copyright (c) 2002, Infineon Technologies. All rights reserved.
|
||||
|
||||
No Warranty
|
||||
Because the program is licensed free of charge, there is no warranty for
|
||||
the program, to the extent permitted by applicable law. Except when
|
||||
otherwise stated in writing the copyright holders and/or other parties
|
||||
provide the program "as is" without warranty of any kind, either
|
||||
expressed or implied, including, but not limited to, the implied
|
||||
warranties of merchantability and fitness for a particular purpose. The
|
||||
entire risk as to the quality and performance of the program is with
|
||||
you. should the program prove defective, you assume the cost of all
|
||||
necessary servicing, repair or correction.
|
||||
|
||||
In no event unless required by applicable law or agreed to in writing
|
||||
will any copyright holder, or any other party who may modify and/or
|
||||
redistribute the program as permitted above, be liable to you for
|
||||
damages, including any general, special, incidental or consequential
|
||||
damages arising out of the use or inability to use the program
|
||||
(including but not limited to loss of data or data being rendered
|
||||
inaccurate or losses sustained by you or third parties or a failure of
|
||||
the program to operate with any other programs), even if such holder or
|
||||
other party has been advised of the possibility of such damages.
|
||||
******************************************************************************/
|
||||
|
||||
|
||||
/*
|
||||
* ####################################
|
||||
* Definition
|
||||
* ####################################
|
||||
*/
|
||||
|
||||
/*
|
||||
* Available Timer/Counter Index
|
||||
*/
|
||||
#define TIMER(n, X) (n * 2 + (X ? 1 : 0))
|
||||
#define TIMER_ANY 0x00
|
||||
#define TIMER1A TIMER(1, 0)
|
||||
#define TIMER1B TIMER(1, 1)
|
||||
#define TIMER2A TIMER(2, 0)
|
||||
#define TIMER2B TIMER(2, 1)
|
||||
#define TIMER3A TIMER(3, 0)
|
||||
#define TIMER3B TIMER(3, 1)
|
||||
|
||||
/*
|
||||
* Flag of Timer/Counter
|
||||
* These flags specify the way in which timer is configured.
|
||||
*/
|
||||
/* Bit size of timer/counter. */
|
||||
#define TIMER_FLAG_16BIT 0x0000
|
||||
#define TIMER_FLAG_32BIT 0x0001
|
||||
/* Switch between timer and counter. */
|
||||
#define TIMER_FLAG_TIMER 0x0000
|
||||
#define TIMER_FLAG_COUNTER 0x0002
|
||||
/* Stop or continue when overflowing/underflowing. */
|
||||
#define TIMER_FLAG_ONCE 0x0000
|
||||
#define TIMER_FLAG_CYCLIC 0x0004
|
||||
/* Count up or counter down. */
|
||||
#define TIMER_FLAG_UP 0x0000
|
||||
#define TIMER_FLAG_DOWN 0x0008
|
||||
/* Count on specific level or edge. */
|
||||
#define TIMER_FLAG_HIGH_LEVEL_SENSITIVE 0x0000
|
||||
#define TIMER_FLAG_LOW_LEVEL_SENSITIVE 0x0040
|
||||
#define TIMER_FLAG_RISE_EDGE 0x0010
|
||||
#define TIMER_FLAG_FALL_EDGE 0x0020
|
||||
#define TIMER_FLAG_ANY_EDGE 0x0030
|
||||
/* Signal is syncronous to module clock or not. */
|
||||
#define TIMER_FLAG_UNSYNC 0x0000
|
||||
#define TIMER_FLAG_SYNC 0x0080
|
||||
/* Different interrupt handle type. */
|
||||
#define TIMER_FLAG_NO_HANDLE 0x0000
|
||||
#if defined(__KERNEL__)
|
||||
#define TIMER_FLAG_CALLBACK_IN_IRQ 0x0100
|
||||
#endif // defined(__KERNEL__)
|
||||
#define TIMER_FLAG_SIGNAL 0x0300
|
||||
/* Internal clock source or external clock source */
|
||||
#define TIMER_FLAG_INT_SRC 0x0000
|
||||
#define TIMER_FLAG_EXT_SRC 0x1000
|
||||
|
||||
|
||||
/*
|
||||
* ioctl Command
|
||||
*/
|
||||
#define GPTU_REQUEST_TIMER 0x01 /* General method to setup timer/counter. */
|
||||
#define GPTU_FREE_TIMER 0x02 /* Free timer/counter. */
|
||||
#define GPTU_START_TIMER 0x03 /* Start or resume timer/counter. */
|
||||
#define GPTU_STOP_TIMER 0x04 /* Suspend timer/counter. */
|
||||
#define GPTU_GET_COUNT_VALUE 0x05 /* Get current count value. */
|
||||
#define GPTU_CALCULATE_DIVIDER 0x06 /* Calculate timer divider from given freq.*/
|
||||
#define GPTU_SET_TIMER 0x07 /* Simplified method to setup timer. */
|
||||
#define GPTU_SET_COUNTER 0x08 /* Simplified method to setup counter. */
|
||||
|
||||
/*
|
||||
* Data Type Used to Call ioctl
|
||||
*/
|
||||
struct gptu_ioctl_param {
|
||||
unsigned int timer; /* In command GPTU_REQUEST_TIMER, GPTU_SET_TIMER, and *
|
||||
* GPTU_SET_COUNTER, this field is ID of expected *
|
||||
* timer/counter. If it's zero, a timer/counter would *
|
||||
* be dynamically allocated and ID would be stored in *
|
||||
* this field. *
|
||||
* In command GPTU_GET_COUNT_VALUE, this field is *
|
||||
* ignored. *
|
||||
* In other command, this field is ID of timer/counter *
|
||||
* allocated. */
|
||||
unsigned int flag; /* In command GPTU_REQUEST_TIMER, GPTU_SET_TIMER, and *
|
||||
* GPTU_SET_COUNTER, this field contains flags to *
|
||||
* specify how to configure timer/counter. *
|
||||
* In command GPTU_START_TIMER, zero indicate start *
|
||||
* and non-zero indicate resume timer/counter. *
|
||||
* In other command, this field is ignored. */
|
||||
unsigned long value; /* In command GPTU_REQUEST_TIMER, this field contains *
|
||||
* init/reload value. *
|
||||
* In command GPTU_SET_TIMER, this field contains *
|
||||
* frequency (0.001Hz) of timer. *
|
||||
* In command GPTU_GET_COUNT_VALUE, current count *
|
||||
* value would be stored in this field. *
|
||||
* In command GPTU_CALCULATE_DIVIDER, this field *
|
||||
* contains frequency wanted, and after calculation, *
|
||||
* divider would be stored in this field to overwrite *
|
||||
* the frequency. *
|
||||
* In other command, this field is ignored. */
|
||||
int pid; /* In command GPTU_REQUEST_TIMER and GPTU_SET_TIMER, *
|
||||
* if signal is required, this field contains process *
|
||||
* ID to which signal would be sent. *
|
||||
* In other command, this field is ignored. */
|
||||
int sig; /* In command GPTU_REQUEST_TIMER and GPTU_SET_TIMER, *
|
||||
* if signal is required, this field contains signal *
|
||||
* number which would be sent. *
|
||||
* In other command, this field is ignored. */
|
||||
};
|
||||
|
||||
/*
|
||||
* ####################################
|
||||
* Data Type
|
||||
* ####################################
|
||||
*/
|
||||
#if defined(__KERNEL__)
|
||||
typedef void (*timer_callback)(unsigned long arg);
|
||||
#endif // defined(__KERNEL__)
|
||||
|
||||
|
||||
/*
|
||||
* ####################################
|
||||
* Declaration
|
||||
* ####################################
|
||||
*/
|
||||
|
||||
#if defined(__KERNEL__)
|
||||
extern int request_timer(unsigned int, unsigned int, unsigned long, unsigned long, unsigned long);
|
||||
extern int free_timer(unsigned int);
|
||||
extern int start_timer(unsigned int, int);
|
||||
extern int stop_timer(unsigned int);
|
||||
extern int reset_counter_flags(u32 timer, u32 flags);
|
||||
extern int get_count_value(unsigned int, unsigned long *);
|
||||
|
||||
extern u32 cal_divider(unsigned long);
|
||||
|
||||
extern int set_timer(unsigned int, unsigned int, int, int, unsigned int, unsigned long, unsigned long);
|
||||
extern int set_counter (unsigned int timer, unsigned int flag, u32 reload, unsigned long arg1, unsigned long arg2);
|
||||
// extern int set_counter(unsigned int, int, int, int, unsigned int, unsigned int, unsigned long, unsigned long);
|
||||
#endif // defined(__KERNEL__)
|
||||
|
||||
|
||||
#endif // __DANUBE_GPTU_DEV_H__2005_07_26__10_19__
|
||||
Loading…
Reference in New Issue