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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | /* * * BRIEF MODULE DESCRIPTION * IT8172 Consumer IR port generic routines. * * Copyright 2001 MontaVista Software Inc. * Author: MontaVista Software, Inc. * ppopov@mvista.com or source@mvista.com * * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * 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., * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/config.h> #ifdef CONFIG_IT8172_CIR #include <linux/types.h> #include <linux/pci.h> #include <linux/kernel.h> #include <linux/init.h> #include <asm/it8172/it8172.h> #include <asm/it8172/it8172_cir.h> volatile struct it8172_cir_regs *cir_regs[NUM_CIR_PORTS] = { (volatile struct it8172_cir_regs *)(KSEG1ADDR(IT8172_PCI_IO_BASE + IT_CIR0_BASE)), (volatile struct it8172_cir_regs *)(KSEG1ADDR(IT8172_PCI_IO_BASE + IT_CIR1_BASE))}; /* * Initialize Consumer IR Port. */ int cir_port_init(struct cir_port *cir) { int port = cir->port; unsigned char data; /* set baud rate */ cir_regs[port]->bdlr = cir->baud_rate & 0xff; cir_regs[port]->bdhr = (cir->baud_rate >> 8) & 0xff; /* set receiver control register */ cir_regs[port]->rcr = (CIR_SET_RDWOS(cir->rdwos) | CIR_SET_RXDCR(cir->rxdcr)); /* set carrier frequency register */ cir_regs[port]->cfr = (CIR_SET_CF(cir->cfq) | CIR_SET_HS(cir->hcfs)); /* set fifo threshold */ data = cir_regs[port]->mstcr & 0xf3; data |= CIR_SET_FIFO_TL(cir->fifo_tl); cir_regs[port]->mstcr = data; clear_fifo(cir); enable_receiver(cir); disable_rx_demodulation(cir); set_rx_active(cir); int_enable(cir); rx_int_enable(cir); return 0; } void clear_fifo(struct cir_port *cir) { cir_regs[cir->port]->mstcr |= CIR_FIFO_CLEAR; } void enable_receiver(struct cir_port *cir) { cir_regs[cir->port]->rcr |= CIR_RXEN; } void disable_receiver(struct cir_port *cir) { cir_regs[cir->port]->rcr &= ~CIR_RXEN; } void enable_rx_demodulation(struct cir_port *cir) { cir_regs[cir->port]->rcr |= CIR_RXEND; } void disable_rx_demodulation(struct cir_port *cir) { cir_regs[cir->port]->rcr &= ~CIR_RXEND; } void set_rx_active(struct cir_port *cir) { cir_regs[cir->port]->rcr |= CIR_RXACT; } void int_enable(struct cir_port *cir) { cir_regs[cir->port]->ier |= CIR_IEC; } void rx_int_enable(struct cir_port *cir) { cir_regs[cir->port]->ier |= CIR_RDAIE; } void dump_regs(struct cir_port *cir) { printk("mstcr %x ier %x iir %x cfr %x rcr %x tcr %x tfsr %x rfsr %x\n", cir_regs[cir->port]->mstcr, cir_regs[cir->port]->ier, cir_regs[cir->port]->iir, cir_regs[cir->port]->cfr, cir_regs[cir->port]->rcr, cir_regs[cir->port]->tcr, cir_regs[cir->port]->tfsr, cir_regs[cir->port]->rfsr); while (cir_regs[cir->port]->iir & CIR_RDAI) { printk("data %x\n", cir_regs[cir->port]->dr); } } void dump_reg_addr(struct cir_port *cir) { printk("dr %x mstcr %x ier %x iir %x cfr %x rcr %x tcr %x bdlr %x bdhr %x tfsr %x rfsr %x\n", (unsigned)&cir_regs[cir->port]->dr, (unsigned)&cir_regs[cir->port]->mstcr, (unsigned)&cir_regs[cir->port]->ier, (unsigned)&cir_regs[cir->port]->iir, (unsigned)&cir_regs[cir->port]->cfr, (unsigned)&cir_regs[cir->port]->rcr, (unsigned)&cir_regs[cir->port]->tcr, (unsigned)&cir_regs[cir->port]->bdlr, (unsigned)&cir_regs[cir->port]->bdhr, (unsigned)&cir_regs[cir->port]->tfsr, (unsigned)&cir_regs[cir->port]->rfsr); } int cir_get_rx_count(struct cir_port *cir) { return cir_regs[cir->port]->rfsr & CIR_RXFBC_MASK; } char cir_read_data(struct cir_port *cir) { return cir_regs[cir->port]->dr; } char get_int_status(struct cir_port *cir) { return cir_regs[cir->port]->iir; } #endif |