-obj-y := reset.o prom.o setup.o interrupt.o dma-core.o pmu.o board.o cgu.o gptu.o gpio.o
+obj-y := reset.o prom.o setup.o interrupt.o dma-core.o pmu.o board.o clock.o timer.o gpio.o
+++ /dev/null
-/*
- * 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
- * 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 unsigned int cgu_get_pll0_fdiv(void);
-
-static inline unsigned int
-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 unsigned int
-cal_dsm(int pll, unsigned int num, unsigned int den)
-{
- u64 res, clock = get_input_clock(pll);
-
- res = num * clock;
- do_div(res, den);
- return res;
-}
-
-static inline unsigned int
-mash_dsm(int pll, unsigned int M, unsigned int N, unsigned int K)
-{
- unsigned int num = ((N + 1) << 10) + K;
- unsigned int den = (M + 1) << 10;
-
- return cal_dsm(pll, num, den);
-}
-
-static inline unsigned int
-ssff_dsm_1(int pll, unsigned int M, unsigned int N, unsigned int K)
-{
- unsigned int num = ((N + 1) << 11) + K + 512;
- unsigned int den = (M + 1) << 11;
-
- return cal_dsm(pll, num, den);
-}
-
-static inline unsigned int
-ssff_dsm_2(int pll, unsigned int M, unsigned int N, unsigned int K)
-{
- unsigned int num = K >= 512 ?
- ((N + 1) << 12) + K - 512 : ((N + 1) << 12) + K + 3584;
- unsigned int den = (M + 1) << 12;
-
- return cal_dsm(pll, num, den);
-}
-
-static inline unsigned int
-dsm(int pll, unsigned int M, unsigned int N, unsigned int K,
- unsigned int dsmsel, unsigned int 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 unsigned int
-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 unsigned int
-cgu_get_pll0_fps(int phase)
-{
- register unsigned int 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 unsigned int
-cgu_get_pll0_fdiv(void)
-{
- register unsigned int div = CGU_PLL2_CFG_INPUT_DIV + 1;
-
- return (cgu_get_pll0_fosc() + (div >> 1)) / div;
-}
-
-static inline unsigned int
-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 unsigned int
-cgu_get_pll1_fps(void)
-{
- register unsigned int fps = cgu_get_pll1_fosc();
-
- return ((fps << 1) + 1) / 3;
-}
-
-static inline unsigned int
-cgu_get_pll1_fdiv(void)
-{
- return cgu_get_pll1_fosc();
-}
-
-static inline unsigned int
-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 unsigned int
-cgu_get_pll2_fps(int phase)
-{
- register unsigned int 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 unsigned int
-cgu_get_pll2_fdiv(void)
-{
- register unsigned int div = CGU_IF_CLK_PCI_CLK + 1;
- return (cgu_get_pll2_fosc() + (div >> 1)) / div;
-}
-
-unsigned int
-cgu_get_mips_clock(int cpu)
-{
- register unsigned int ret = cgu_get_pll0_fosc();
- register unsigned int 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;
- }
-}
-
-unsigned int
-cgu_get_cpu_clock(void)
-{
- return cgu_get_mips_clock(0);
-}
-
-unsigned int
-cgu_get_io_region_clock(void)
-{
- register unsigned int 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;
- }
-}
-
-unsigned int
-cgu_get_fpi_bus_clock(int fpi)
-{
- register unsigned int ret = cgu_get_io_region_clock();
-
- if((fpi == 2) && (CGU_SYS_FPI_SEL))
- ret >>= 1;
-
- return ret;
-}
-
-unsigned int
-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;
- }
-}
-
-unsigned int
-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;
-}
-
-unsigned int
-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;
-}
-
-unsigned int
-cgu_get_clockout(int clkout)
-{
- unsigned int fosc1 = cgu_get_pll1_fosc();
- unsigned int fosc2 = cgu_get_pll2_fosc();
-
- if(clkout > 3 || clkout < 0)
- return 0;
-
- switch(((unsigned int)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;
-}
-
-void cgu_setup_pci_clk(int external_clock)
-{
- //set clock to 33Mhz
- ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) & ~0xf00000, IFXMIPS_CGU_IFCCR);
- ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) | 0x800000, IFXMIPS_CGU_IFCCR);
- // internal or external clock
- if(external_clock)
- {
- ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) & ~ (1 << 16), IFXMIPS_CGU_IFCCR);
- ifxmips_w32((1 << 30), IFXMIPS_CGU_PCICR);
- } else {
- ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) | (1 << 16), IFXMIPS_CGU_IFCCR);
- ifxmips_w32((1 << 31) | (1 << 30), IFXMIPS_CGU_PCICR);
- }
-}
--- /dev/null
+/*
+ * 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
+ * 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 unsigned int cgu_get_pll0_fdiv(void);
+
+static inline unsigned int
+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 unsigned int
+cal_dsm(int pll, unsigned int num, unsigned int den)
+{
+ u64 res, clock = get_input_clock(pll);
+
+ res = num * clock;
+ do_div(res, den);
+ return res;
+}
+
+static inline unsigned int
+mash_dsm(int pll, unsigned int M, unsigned int N, unsigned int K)
+{
+ unsigned int num = ((N + 1) << 10) + K;
+ unsigned int den = (M + 1) << 10;
+
+ return cal_dsm(pll, num, den);
+}
+
+static inline unsigned int
+ssff_dsm_1(int pll, unsigned int M, unsigned int N, unsigned int K)
+{
+ unsigned int num = ((N + 1) << 11) + K + 512;
+ unsigned int den = (M + 1) << 11;
+
+ return cal_dsm(pll, num, den);
+}
+
+static inline unsigned int
+ssff_dsm_2(int pll, unsigned int M, unsigned int N, unsigned int K)
+{
+ unsigned int num = K >= 512 ?
+ ((N + 1) << 12) + K - 512 : ((N + 1) << 12) + K + 3584;
+ unsigned int den = (M + 1) << 12;
+
+ return cal_dsm(pll, num, den);
+}
+
+static inline unsigned int
+dsm(int pll, unsigned int M, unsigned int N, unsigned int K,
+ unsigned int dsmsel, unsigned int 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 unsigned int
+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 unsigned int
+cgu_get_pll0_fps(int phase)
+{
+ register unsigned int 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 unsigned int
+cgu_get_pll0_fdiv(void)
+{
+ register unsigned int div = CGU_PLL2_CFG_INPUT_DIV + 1;
+
+ return (cgu_get_pll0_fosc() + (div >> 1)) / div;
+}
+
+static inline unsigned int
+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 unsigned int
+cgu_get_pll1_fps(void)
+{
+ register unsigned int fps = cgu_get_pll1_fosc();
+
+ return ((fps << 1) + 1) / 3;
+}
+
+static inline unsigned int
+cgu_get_pll1_fdiv(void)
+{
+ return cgu_get_pll1_fosc();
+}
+
+static inline unsigned int
+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 unsigned int
+cgu_get_pll2_fps(int phase)
+{
+ register unsigned int 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 unsigned int
+cgu_get_pll2_fdiv(void)
+{
+ register unsigned int div = CGU_IF_CLK_PCI_CLK + 1;
+ return (cgu_get_pll2_fosc() + (div >> 1)) / div;
+}
+
+unsigned int
+cgu_get_mips_clock(int cpu)
+{
+ register unsigned int ret = cgu_get_pll0_fosc();
+ register unsigned int 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;
+ }
+}
+
+unsigned int
+cgu_get_cpu_clock(void)
+{
+ return cgu_get_mips_clock(0);
+}
+
+unsigned int
+cgu_get_io_region_clock(void)
+{
+ register unsigned int 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;
+ }
+}
+
+unsigned int
+cgu_get_fpi_bus_clock(int fpi)
+{
+ register unsigned int ret = cgu_get_io_region_clock();
+
+ if((fpi == 2) && (CGU_SYS_FPI_SEL))
+ ret >>= 1;
+
+ return ret;
+}
+
+unsigned int
+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;
+ }
+}
+
+unsigned int
+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;
+}
+
+unsigned int
+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;
+}
+
+unsigned int
+cgu_get_clockout(int clkout)
+{
+ unsigned int fosc1 = cgu_get_pll1_fosc();
+ unsigned int fosc2 = cgu_get_pll2_fosc();
+
+ if(clkout > 3 || clkout < 0)
+ return 0;
+
+ switch(((unsigned int)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;
+}
+
+void cgu_setup_pci_clk(int external_clock)
+{
+ //set clock to 33Mhz
+ ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) & ~0xf00000, IFXMIPS_CGU_IFCCR);
+ ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) | 0x800000, IFXMIPS_CGU_IFCCR);
+ // internal or external clock
+ if(external_clock)
+ {
+ ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) & ~ (1 << 16), IFXMIPS_CGU_IFCCR);
+ ifxmips_w32((1 << 30), IFXMIPS_CGU_PCICR);
+ } else {
+ ifxmips_w32(ifxmips_r32(IFXMIPS_CGU_IFCCR) | (1 << 16), IFXMIPS_CGU_IFCCR);
+ ifxmips_w32((1 << 31) | (1 << 30), IFXMIPS_CGU_PCICR);
+ }
+}
+++ /dev/null
-#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);
--- /dev/null
+#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);
projects / openwrt / svn-archive / openwrt.git / commitdiff