1 /* 2 * linux/drivers/pcmcia/sa1111_generic.c 3 * 4 * We implement the generic parts of a SA1111 PCMCIA driver. This 5 * basically means we handle everything except controlling the 6 * power. Power is machine specific... 7 */ 8 #include <linux/module.h> 9 #include <linux/kernel.h> 10 #include <linux/ioport.h> 11 #include <linux/device.h> 12 #include <linux/interrupt.h> 13 #include <linux/init.h> 14 #include <linux/io.h> 15 #include <linux/slab.h> 16 17 #include <pcmcia/ss.h> 18 19 #include <mach/hardware.h> 20 #include <asm/hardware/sa1111.h> 21 #include <asm/irq.h> 22 23 #include "sa1111_generic.h" 24 25 /* 26 * These are offsets from the above base. 27 */ 28 #define PCCR 0x0000 29 #define PCSSR 0x0004 30 #define PCSR 0x0008 31 32 #define PCSR_S0_READY (1<<0) 33 #define PCSR_S1_READY (1<<1) 34 #define PCSR_S0_DETECT (1<<2) 35 #define PCSR_S1_DETECT (1<<3) 36 #define PCSR_S0_VS1 (1<<4) 37 #define PCSR_S0_VS2 (1<<5) 38 #define PCSR_S1_VS1 (1<<6) 39 #define PCSR_S1_VS2 (1<<7) 40 #define PCSR_S0_WP (1<<8) 41 #define PCSR_S1_WP (1<<9) 42 #define PCSR_S0_BVD1 (1<<10) 43 #define PCSR_S0_BVD2 (1<<11) 44 #define PCSR_S1_BVD1 (1<<12) 45 #define PCSR_S1_BVD2 (1<<13) 46 47 #define PCCR_S0_RST (1<<0) 48 #define PCCR_S1_RST (1<<1) 49 #define PCCR_S0_FLT (1<<2) 50 #define PCCR_S1_FLT (1<<3) 51 #define PCCR_S0_PWAITEN (1<<4) 52 #define PCCR_S1_PWAITEN (1<<5) 53 #define PCCR_S0_PSE (1<<6) 54 #define PCCR_S1_PSE (1<<7) 55 56 #define PCSSR_S0_SLEEP (1<<0) 57 #define PCSSR_S1_SLEEP (1<<1) 58 59 #define IDX_IRQ_S0_READY_NINT (0) 60 #define IDX_IRQ_S0_CD_VALID (1) 61 #define IDX_IRQ_S0_BVD1_STSCHG (2) 62 #define IDX_IRQ_S1_READY_NINT (3) 63 #define IDX_IRQ_S1_CD_VALID (4) 64 #define IDX_IRQ_S1_BVD1_STSCHG (5) 65 66 void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) 67 { 68 struct sa1111_pcmcia_socket *s = to_skt(skt); 69 unsigned long status = sa1111_readl(s->dev->mapbase + PCSR); 70 71 switch (skt->nr) { 72 case 0: 73 state->detect = status & PCSR_S0_DETECT ? 0 : 1; 74 state->ready = status & PCSR_S0_READY ? 1 : 0; 75 state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0; 76 state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0; 77 state->wrprot = status & PCSR_S0_WP ? 1 : 0; 78 state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1; 79 state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1; 80 break; 81 82 case 1: 83 state->detect = status & PCSR_S1_DETECT ? 0 : 1; 84 state->ready = status & PCSR_S1_READY ? 1 : 0; 85 state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0; 86 state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0; 87 state->wrprot = status & PCSR_S1_WP ? 1 : 0; 88 state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1; 89 state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1; 90 break; 91 } 92 } 93 94 int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) 95 { 96 struct sa1111_pcmcia_socket *s = to_skt(skt); 97 unsigned int pccr_skt_mask, pccr_set_mask, val; 98 unsigned long flags; 99 100 switch (skt->nr) { 101 case 0: 102 pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE; 103 break; 104 105 case 1: 106 pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE; 107 break; 108 109 default: 110 return -1; 111 } 112 113 pccr_set_mask = 0; 114 115 if (state->Vcc != 0) 116 pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN; 117 if (state->Vcc == 50) 118 pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE; 119 if (state->flags & SS_RESET) 120 pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST; 121 if (state->flags & SS_OUTPUT_ENA) 122 pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT; 123 124 local_irq_save(flags); 125 val = sa1111_readl(s->dev->mapbase + PCCR); 126 val &= ~pccr_skt_mask; 127 val |= pccr_set_mask & pccr_skt_mask; 128 sa1111_writel(val, s->dev->mapbase + PCCR); 129 local_irq_restore(flags); 130 131 return 0; 132 } 133 134 int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops, 135 int (*add)(struct soc_pcmcia_socket *)) 136 { 137 struct sa1111_pcmcia_socket *s; 138 struct clk *clk; 139 int i, ret = 0; 140 141 clk = devm_clk_get(&dev->dev, NULL); 142 if (IS_ERR(clk)) 143 return PTR_ERR(clk); 144 145 ops->socket_state = sa1111_pcmcia_socket_state; 146 147 for (i = 0; i < ops->nr; i++) { 148 s = kzalloc(sizeof(*s), GFP_KERNEL); 149 if (!s) 150 return -ENOMEM; 151 152 s->soc.nr = ops->first + i; 153 s->soc.clk = clk; 154 155 soc_pcmcia_init_one(&s->soc, ops, &dev->dev); 156 s->dev = dev; 157 if (s->soc.nr) { 158 s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT]; 159 s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID]; 160 s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect"; 161 s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG]; 162 s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1"; 163 } else { 164 s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT]; 165 s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID]; 166 s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect"; 167 s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG]; 168 s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1"; 169 } 170 171 ret = add(&s->soc); 172 if (ret == 0) { 173 s->next = dev_get_drvdata(&dev->dev); 174 dev_set_drvdata(&dev->dev, s); 175 } else 176 kfree(s); 177 } 178 179 return ret; 180 } 181 182 static int pcmcia_probe(struct sa1111_dev *dev) 183 { 184 void __iomem *base; 185 int ret; 186 187 ret = sa1111_enable_device(dev); 188 if (ret) 189 return ret; 190 191 dev_set_drvdata(&dev->dev, NULL); 192 193 if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) { 194 sa1111_disable_device(dev); 195 return -EBUSY; 196 } 197 198 base = dev->mapbase; 199 200 /* 201 * Initialise the suspend state. 202 */ 203 sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR); 204 sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR); 205 206 #ifdef CONFIG_SA1100_BADGE4 207 pcmcia_badge4_init(dev); 208 #endif 209 #ifdef CONFIG_SA1100_JORNADA720 210 pcmcia_jornada720_init(dev); 211 #endif 212 #ifdef CONFIG_ARCH_LUBBOCK 213 pcmcia_lubbock_init(dev); 214 #endif 215 #ifdef CONFIG_ASSABET_NEPONSET 216 pcmcia_neponset_init(dev); 217 #endif 218 return 0; 219 } 220 221 static int pcmcia_remove(struct sa1111_dev *dev) 222 { 223 struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev); 224 225 dev_set_drvdata(&dev->dev, NULL); 226 227 for (; s; s = next) { 228 next = s->next; 229 soc_pcmcia_remove_one(&s->soc); 230 kfree(s); 231 } 232 233 release_mem_region(dev->res.start, 512); 234 sa1111_disable_device(dev); 235 return 0; 236 } 237 238 static struct sa1111_driver pcmcia_driver = { 239 .drv = { 240 .name = "sa1111-pcmcia", 241 }, 242 .devid = SA1111_DEVID_PCMCIA, 243 .probe = pcmcia_probe, 244 .remove = pcmcia_remove, 245 }; 246 247 static int __init sa1111_drv_pcmcia_init(void) 248 { 249 return sa1111_driver_register(&pcmcia_driver); 250 } 251 252 static void __exit sa1111_drv_pcmcia_exit(void) 253 { 254 sa1111_driver_unregister(&pcmcia_driver); 255 } 256 257 fs_initcall(sa1111_drv_pcmcia_init); 258 module_exit(sa1111_drv_pcmcia_exit); 259 260 MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver"); 261 MODULE_LICENSE("GPL"); 262