/* * linux/drivers/pcmcia/pxa/lubbock.c * * Author: George Davis * Created: Jan 10, 2002 * Copyright: MontaVista Software Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c * * Lubbock PCMCIA specific routines. * */ #include #include #include #include #include #include /* * I'd really like to move the INTPOL stuff to arch/arm/mach-sa1100/sa1111.c * ... and maybe even arch/arm/mach-pxa/sa1111.c now too! : ) */ #define SA1111_IRQMASK_LO(x) (1 << (x - IRQ_SA1111_START)) #define SA1111_IRQMASK_HI(x) (1 << (x - IRQ_SA1111_START - 32)) static int lubbock_pcmcia_init(struct pcmcia_init *init){ int return_val=0; /* Set PCMCIA Socket 0 power to standby mode. */ PA_DWR &= ~(GPIO_bit(0) | GPIO_bit(1) | GPIO_bit(2) | GPIO_bit(3)); /* Set GPIO_A<3:0> to be outputs for PCMCIA (socket 0) power controller. * Note that this is done only after first initializing GPIO_A<3:0> * output state above to be certain that we drive signals to the same * state as the pull-downs connected to these lines. The pull-downs are * req'd to make sure PCMCIA power is OFF until we can get around to * setting up the GPIO_A<3:0> state and direction. */ PA_DDR &= ~(GPIO_bit(0) | GPIO_bit(1) | GPIO_bit(2) | GPIO_bit(3)); /* Set CF Socket 1 power to standby mode. */ LUB_MISC_WR &= ~(GPIO_bit(15) | GPIO_bit(14)); INTPOL1 |= SA1111_IRQMASK_HI(S0_READY_NINT) | SA1111_IRQMASK_HI(S1_READY_NINT) | SA1111_IRQMASK_HI(S0_CD_VALID) | SA1111_IRQMASK_HI(S1_CD_VALID) | SA1111_IRQMASK_HI(S0_BVD1_STSCHG) | SA1111_IRQMASK_HI(S1_BVD1_STSCHG); #warning what if a request_irq fails? return_val+=request_irq(S0_CD_VALID, init->handler, SA_INTERRUPT, "Lubbock PCMCIA (0) CD", NULL); return_val+=request_irq(S1_CD_VALID, init->handler, SA_INTERRUPT, "Lubbock CF (1) CD", NULL); return_val+=request_irq(S0_BVD1_STSCHG, init->handler, SA_INTERRUPT, "Lubbock PCMCIA (0) BVD1", NULL); return_val+=request_irq(S1_BVD1_STSCHG, init->handler, SA_INTERRUPT, "Lubbock CF (1) BVD1", NULL); return (return_val<0) ? -1 : 2; } static int lubbock_pcmcia_shutdown(void){ free_irq(S0_CD_VALID, NULL); free_irq(S1_CD_VALID, NULL); free_irq(S0_BVD1_STSCHG, NULL); free_irq(S1_BVD1_STSCHG, NULL); INTPOL1 &= ~(SA1111_IRQMASK_HI(S0_CD_VALID) | SA1111_IRQMASK_HI(S1_CD_VALID) | SA1111_IRQMASK_HI(S0_BVD1_STSCHG) | SA1111_IRQMASK_HI(S1_BVD1_STSCHG)); return 0; } static int lubbock_pcmcia_socket_state(struct pcmcia_state_array *state_array){ unsigned long status; int return_val=1; if(state_array->size<2) return -1; memset(state_array->state, 0, (state_array->size)*sizeof(struct pcmcia_state)); status=PCSR; state_array->state[0].detect=((status & PCSR_S0_DETECT)==0)?1:0; state_array->state[0].ready=((status & PCSR_S0_READY)==0)?0:1; state_array->state[0].bvd1=((status & PCSR_S0_BVD1)==0)?0:1; state_array->state[0].bvd2=((status & PCSR_S0_BVD2)==0)?0:1; state_array->state[0].wrprot=((status & PCSR_S0_WP)==0)?0:1; state_array->state[0].vs_3v=((status & PCSR_S0_VS1)==0)?1:0; state_array->state[0].vs_Xv=((status & PCSR_S0_VS2)==0)?1:0; state_array->state[1].detect=((status & PCSR_S1_DETECT)==0)?1:0; state_array->state[1].ready=((status & PCSR_S1_READY)==0)?0:1; state_array->state[1].bvd1=((status & PCSR_S1_BVD1)==0)?0:1; state_array->state[1].bvd2=((status & PCSR_S1_BVD2)==0)?0:1; state_array->state[1].wrprot=((status & PCSR_S1_WP)==0)?0:1; state_array->state[1].vs_3v=((status & PCSR_S1_VS1)==0)?1:0; state_array->state[1].vs_Xv=((status & PCSR_S1_VS2)==0)?1:0; return return_val; } static int lubbock_pcmcia_get_irq_info(struct pcmcia_irq_info *info){ switch(info->sock){ case 0: info->irq=S0_READY_NINT; break; case 1: info->irq=S1_READY_NINT; break; default: return -1; } return 0; } static int lubbock_pcmcia_configure_socket(const struct pcmcia_configure *configure){ unsigned long pccr=PCCR, gpio=PA_DWR, misc_wr = LUB_MISC_WR; /* Lubbock uses the Maxim MAX1602, with the following connections: * * Socket 0 (PCMCIA): * MAX1602 Lubbock Register * Pin Signal * ----- ------- ---------------------- * A0VPP S0_PWR0 SA-1111 GPIO A<0> * A1VPP S0_PWR1 SA-1111 GPIO A<1> * A0VCC S0_PWR2 SA-1111 GPIO A<2> * A1VCC S0_PWR3 SA-1111 GPIO A<3> * VX VCC * VY +3.3V * 12IN +12V * CODE +3.3V Cirrus Code, CODE = High (VY) * * Socket 1 (CF): * MAX1602 Lubbock Register * Pin Signal * ----- ------- ---------------------- * A0VPP GND VPP is not connected * A1VPP GND VPP is not connected * A0VCC S1_PWR0 MISC_WR<14> * A1VCC S1_PWR0 MISC_WR<15> * VX VCC * VY +3.3V * 12IN GND VPP is not connected * CODE +3.3V Cirrus Code, CODE = High (VY) * */ switch(configure->sock){ case 0: switch(configure->vcc){ case 0: pccr = (pccr & ~PCCR_S0_FLT); gpio &= ~(GPIO_bit(2) | GPIO_bit(3)); break; case 33: pccr = (pccr & ~PCCR_S0_PSE) | PCCR_S0_FLT | PCCR_S0_PWAITEN; gpio = (gpio & ~(GPIO_bit(2) | GPIO_bit(3))) | GPIO_bit(3); break; case 50: pccr = (pccr | PCCR_S0_PSE | PCCR_S0_FLT | PCCR_S0_PWAITEN); gpio = (gpio & ~(GPIO_bit(2) | GPIO_bit(3))) | GPIO_bit(2); break; default: printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__, configure->vcc); return -1; } switch(configure->vpp){ case 0: gpio &= ~(GPIO_bit(0) | GPIO_bit(1)); break; case 120: gpio = (gpio & ~(GPIO_bit(0) | GPIO_bit(1))) | GPIO_bit(1); break; default: /* REVISIT: I'm not sure about this? Is this correct? Is it always safe or do we have potential problems with bogus combinations of Vcc and Vpp settings? */ if(configure->vpp == configure->vcc) gpio = (gpio & ~(GPIO_bit(0) | GPIO_bit(1))) | GPIO_bit(0); else { printk(KERN_ERR "%s(): unrecognized Vpp %u\n", __FUNCTION__, configure->vpp); return -1; } } pccr = (configure->reset) ? (pccr | PCCR_S0_RST) : (pccr & ~PCCR_S0_RST); break; case 1: switch(configure->vcc){ case 0: pccr = (pccr & ~PCCR_S1_FLT); misc_wr &= ~(GPIO_bit(15) | GPIO_bit(14)); break; case 33: pccr = (pccr & ~PCCR_S1_PSE) | PCCR_S1_FLT | PCCR_S1_PWAITEN; misc_wr = (misc_wr & ~(GPIO_bit(15) | GPIO_bit(14))) | GPIO_bit(15); gpio = (gpio & ~(GPIO_bit(2) | GPIO_bit(3))) | GPIO_bit(2); break; case 50: pccr = (pccr | PCCR_S1_PSE | PCCR_S1_FLT | PCCR_S1_PWAITEN); misc_wr = (misc_wr & ~(GPIO_bit(15) | GPIO_bit(14))) | GPIO_bit(14); break; default: printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__, configure->vcc); return -1; } if(configure->vpp!=configure->vcc && configure->vpp!=0){ printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n", __FUNCTION__, configure->vpp); return -1; } pccr = (configure->reset)?(pccr | PCCR_S1_RST):(pccr & ~PCCR_S1_RST); break; default: return -1; } PCCR = pccr; LUB_MISC_WR = misc_wr; PA_DWR = gpio; return 0; } struct pcmcia_low_level lubbock_pcmcia_ops = { lubbock_pcmcia_init, lubbock_pcmcia_shutdown, lubbock_pcmcia_socket_state, lubbock_pcmcia_get_irq_info, lubbock_pcmcia_configure_socket };