11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/arch/arm/mach-sa1100/neponset.c 31da177e4SLinus Torvalds */ 49590e898SRussell King #include <linux/err.h> 51da177e4SLinus Torvalds #include <linux/init.h> 61da177e4SLinus Torvalds #include <linux/ioport.h> 7ced8d21cSRussell King #include <linux/irq.h> 892e617d9SRussell King #include <linux/kernel.h> 9ae14c2e2SRussell King #include <linux/module.h> 10d052d1beSRussell King #include <linux/platform_device.h> 1151f93390SRussell King #include <linux/pm.h> 1292e617d9SRussell King #include <linux/serial_core.h> 13ae14c2e2SRussell King #include <linux/slab.h> 141da177e4SLinus Torvalds 151da177e4SLinus Torvalds #include <asm/mach-types.h> 161da177e4SLinus Torvalds #include <asm/mach/map.h> 171da177e4SLinus Torvalds #include <asm/mach/serial_sa1100.h> 181da177e4SLinus Torvalds #include <asm/hardware/sa1111.h> 191da177e4SLinus Torvalds #include <asm/sizes.h> 201da177e4SLinus Torvalds 2192e617d9SRussell King #include <mach/hardware.h> 2292e617d9SRussell King #include <mach/assabet.h> 2392e617d9SRussell King #include <mach/neponset.h> 2492e617d9SRussell King 25ced8d21cSRussell King #define NEP_IRQ_SMC91X 0 26ced8d21cSRussell King #define NEP_IRQ_USAR 1 27ced8d21cSRussell King #define NEP_IRQ_SA1111 2 28ced8d21cSRussell King #define NEP_IRQ_NR 3 29ced8d21cSRussell King 30f942b0fdSRussell King #define WHOAMI 0x00 31f942b0fdSRussell King #define LEDS 0x10 32f942b0fdSRussell King #define SWPK 0x20 33f942b0fdSRussell King #define IRR 0x24 34f942b0fdSRussell King #define KP_Y_IN 0x80 35f942b0fdSRussell King #define KP_X_OUT 0x90 36f942b0fdSRussell King #define NCR_0 0xa0 37f942b0fdSRussell King #define MDM_CTL_0 0xb0 38f942b0fdSRussell King #define MDM_CTL_1 0xb4 39f942b0fdSRussell King #define AUD_CTL 0xc0 40f942b0fdSRussell King 41f942b0fdSRussell King #define IRR_ETHERNET (1 << 0) 42f942b0fdSRussell King #define IRR_USAR (1 << 1) 43f942b0fdSRussell King #define IRR_SA1111 (1 << 2) 44f942b0fdSRussell King 45f942b0fdSRussell King #define MDM_CTL0_RTS1 (1 << 0) 46f942b0fdSRussell King #define MDM_CTL0_DTR1 (1 << 1) 47f942b0fdSRussell King #define MDM_CTL0_RTS2 (1 << 2) 48f942b0fdSRussell King #define MDM_CTL0_DTR2 (1 << 3) 49f942b0fdSRussell King 50f942b0fdSRussell King #define MDM_CTL1_CTS1 (1 << 0) 51f942b0fdSRussell King #define MDM_CTL1_DSR1 (1 << 1) 52f942b0fdSRussell King #define MDM_CTL1_DCD1 (1 << 2) 53f942b0fdSRussell King #define MDM_CTL1_CTS2 (1 << 3) 54f942b0fdSRussell King #define MDM_CTL1_DSR2 (1 << 4) 55f942b0fdSRussell King #define MDM_CTL1_DCD2 (1 << 5) 56f942b0fdSRussell King 57f942b0fdSRussell King #define AUD_SEL_1341 (1 << 0) 58f942b0fdSRussell King #define AUD_MUTE_1341 (1 << 1) 59f942b0fdSRussell King 60bab50a35SRussell King extern void sa1110_mb_disable(void); 61bab50a35SRussell King 62ae14c2e2SRussell King struct neponset_drvdata { 63f942b0fdSRussell King void __iomem *base; 649590e898SRussell King struct platform_device *sa1111; 659590e898SRussell King struct platform_device *smc91x; 66ced8d21cSRussell King unsigned irq_base; 67ae14c2e2SRussell King #ifdef CONFIG_PM_SLEEP 68ae14c2e2SRussell King u32 ncr0; 69ae14c2e2SRussell King u32 mdm_ctl_0; 70ae14c2e2SRussell King #endif 71ae14c2e2SRussell King }; 72ae14c2e2SRussell King 73f942b0fdSRussell King static void __iomem *nep_base; 74f942b0fdSRussell King 756ad1b614SRussell King void neponset_ncr_frob(unsigned int mask, unsigned int val) 766ad1b614SRussell King { 77f942b0fdSRussell King void __iomem *base = nep_base; 78f942b0fdSRussell King 79f942b0fdSRussell King if (base) { 806ad1b614SRussell King unsigned long flags; 81f942b0fdSRussell King unsigned v; 826ad1b614SRussell King 836ad1b614SRussell King local_irq_save(flags); 84f942b0fdSRussell King v = readb_relaxed(base + NCR_0); 85f942b0fdSRussell King writeb_relaxed((v & ~mask) | val, base + NCR_0); 866ad1b614SRussell King local_irq_restore(flags); 87f942b0fdSRussell King } else { 88f942b0fdSRussell King WARN(1, "nep_base unset\n"); 89f942b0fdSRussell King } 906ad1b614SRussell King } 916ad1b614SRussell King 921da177e4SLinus Torvalds static void neponset_set_mctrl(struct uart_port *port, u_int mctrl) 931da177e4SLinus Torvalds { 94f942b0fdSRussell King void __iomem *base = nep_base; 95f942b0fdSRussell King u_int mdm_ctl0; 961da177e4SLinus Torvalds 97f942b0fdSRussell King if (!base) 98f942b0fdSRussell King return; 99f942b0fdSRussell King 100f942b0fdSRussell King mdm_ctl0 = readb_relaxed(base + MDM_CTL_0); 1011da177e4SLinus Torvalds if (port->mapbase == _Ser1UTCR0) { 1021da177e4SLinus Torvalds if (mctrl & TIOCM_RTS) 1031da177e4SLinus Torvalds mdm_ctl0 &= ~MDM_CTL0_RTS2; 1041da177e4SLinus Torvalds else 1051da177e4SLinus Torvalds mdm_ctl0 |= MDM_CTL0_RTS2; 1061da177e4SLinus Torvalds 1071da177e4SLinus Torvalds if (mctrl & TIOCM_DTR) 1081da177e4SLinus Torvalds mdm_ctl0 &= ~MDM_CTL0_DTR2; 1091da177e4SLinus Torvalds else 1101da177e4SLinus Torvalds mdm_ctl0 |= MDM_CTL0_DTR2; 1111da177e4SLinus Torvalds } else if (port->mapbase == _Ser3UTCR0) { 1121da177e4SLinus Torvalds if (mctrl & TIOCM_RTS) 1131da177e4SLinus Torvalds mdm_ctl0 &= ~MDM_CTL0_RTS1; 1141da177e4SLinus Torvalds else 1151da177e4SLinus Torvalds mdm_ctl0 |= MDM_CTL0_RTS1; 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds if (mctrl & TIOCM_DTR) 1181da177e4SLinus Torvalds mdm_ctl0 &= ~MDM_CTL0_DTR1; 1191da177e4SLinus Torvalds else 1201da177e4SLinus Torvalds mdm_ctl0 |= MDM_CTL0_DTR1; 1211da177e4SLinus Torvalds } 1221da177e4SLinus Torvalds 123f942b0fdSRussell King writeb_relaxed(mdm_ctl0, base + MDM_CTL_0); 1241da177e4SLinus Torvalds } 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds static u_int neponset_get_mctrl(struct uart_port *port) 1271da177e4SLinus Torvalds { 128f942b0fdSRussell King void __iomem *base = nep_base; 1291da177e4SLinus Torvalds u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; 130f942b0fdSRussell King u_int mdm_ctl1; 1311da177e4SLinus Torvalds 132f942b0fdSRussell King if (!base) 133f942b0fdSRussell King return ret; 134f942b0fdSRussell King 135f942b0fdSRussell King mdm_ctl1 = readb_relaxed(base + MDM_CTL_1); 1361da177e4SLinus Torvalds if (port->mapbase == _Ser1UTCR0) { 1371da177e4SLinus Torvalds if (mdm_ctl1 & MDM_CTL1_DCD2) 1381da177e4SLinus Torvalds ret &= ~TIOCM_CD; 1391da177e4SLinus Torvalds if (mdm_ctl1 & MDM_CTL1_CTS2) 1401da177e4SLinus Torvalds ret &= ~TIOCM_CTS; 1411da177e4SLinus Torvalds if (mdm_ctl1 & MDM_CTL1_DSR2) 1421da177e4SLinus Torvalds ret &= ~TIOCM_DSR; 1431da177e4SLinus Torvalds } else if (port->mapbase == _Ser3UTCR0) { 1441da177e4SLinus Torvalds if (mdm_ctl1 & MDM_CTL1_DCD1) 1451da177e4SLinus Torvalds ret &= ~TIOCM_CD; 1461da177e4SLinus Torvalds if (mdm_ctl1 & MDM_CTL1_CTS1) 1471da177e4SLinus Torvalds ret &= ~TIOCM_CTS; 1481da177e4SLinus Torvalds if (mdm_ctl1 & MDM_CTL1_DSR1) 1491da177e4SLinus Torvalds ret &= ~TIOCM_DSR; 1501da177e4SLinus Torvalds } 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds return ret; 1531da177e4SLinus Torvalds } 1541da177e4SLinus Torvalds 155cdea4606SRussell King static struct sa1100_port_fns neponset_port_fns __devinitdata = { 1561da177e4SLinus Torvalds .set_mctrl = neponset_set_mctrl, 1571da177e4SLinus Torvalds .get_mctrl = neponset_get_mctrl, 1581da177e4SLinus Torvalds }; 1591da177e4SLinus Torvalds 16071045520SRussell King /* 16192e617d9SRussell King * Install handler for Neponset IRQ. Note that we have to loop here 16292e617d9SRussell King * since the ETHERNET and USAR IRQs are level based, and we need to 16392e617d9SRussell King * ensure that the IRQ signal is deasserted before returning. This 16492e617d9SRussell King * is rather unfortunate. 16592e617d9SRussell King */ 166ced8d21cSRussell King static void neponset_irq_handler(unsigned int irq, struct irq_desc *desc) 16792e617d9SRussell King { 168ced8d21cSRussell King struct neponset_drvdata *d = irq_desc_get_handler_data(desc); 16992e617d9SRussell King unsigned int irr; 17092e617d9SRussell King 17192e617d9SRussell King while (1) { 17292e617d9SRussell King /* 17392e617d9SRussell King * Acknowledge the parent IRQ. 17492e617d9SRussell King */ 17592e617d9SRussell King desc->irq_data.chip->irq_ack(&desc->irq_data); 17692e617d9SRussell King 17792e617d9SRussell King /* 17892e617d9SRussell King * Read the interrupt reason register. Let's have all 17992e617d9SRussell King * active IRQ bits high. Note: there is a typo in the 18092e617d9SRussell King * Neponset user's guide for the SA1111 IRR level. 18192e617d9SRussell King */ 182f942b0fdSRussell King irr = readb_relaxed(d->base + IRR); 183f942b0fdSRussell King irr ^= IRR_ETHERNET | IRR_USAR; 18492e617d9SRussell King 18592e617d9SRussell King if ((irr & (IRR_ETHERNET | IRR_USAR | IRR_SA1111)) == 0) 18692e617d9SRussell King break; 18792e617d9SRussell King 18892e617d9SRussell King /* 18992e617d9SRussell King * Since there is no individual mask, we have to 19092e617d9SRussell King * mask the parent IRQ. This is safe, since we'll 19192e617d9SRussell King * recheck the register for any pending IRQs. 19292e617d9SRussell King */ 19392e617d9SRussell King if (irr & (IRR_ETHERNET | IRR_USAR)) { 19492e617d9SRussell King desc->irq_data.chip->irq_mask(&desc->irq_data); 19592e617d9SRussell King 19692e617d9SRussell King /* 19792e617d9SRussell King * Ack the interrupt now to prevent re-entering 19892e617d9SRussell King * this neponset handler. Again, this is safe 19992e617d9SRussell King * since we'll check the IRR register prior to 20092e617d9SRussell King * leaving. 20192e617d9SRussell King */ 20292e617d9SRussell King desc->irq_data.chip->irq_ack(&desc->irq_data); 20392e617d9SRussell King 204ced8d21cSRussell King if (irr & IRR_ETHERNET) 205ced8d21cSRussell King generic_handle_irq(d->irq_base + NEP_IRQ_SMC91X); 20692e617d9SRussell King 207ced8d21cSRussell King if (irr & IRR_USAR) 208ced8d21cSRussell King generic_handle_irq(d->irq_base + NEP_IRQ_USAR); 20992e617d9SRussell King 21092e617d9SRussell King desc->irq_data.chip->irq_unmask(&desc->irq_data); 21192e617d9SRussell King } 21292e617d9SRussell King 213ced8d21cSRussell King if (irr & IRR_SA1111) 214ced8d21cSRussell King generic_handle_irq(d->irq_base + NEP_IRQ_SA1111); 21592e617d9SRussell King } 21692e617d9SRussell King } 21792e617d9SRussell King 218ced8d21cSRussell King /* Yes, we really do not have any kind of masking or unmasking */ 21971045520SRussell King static void nochip_noop(struct irq_data *irq) 22071045520SRussell King { 22171045520SRussell King } 22271045520SRussell King 22371045520SRussell King static struct irq_chip nochip = { 22471045520SRussell King .name = "neponset", 22571045520SRussell King .irq_ack = nochip_noop, 22671045520SRussell King .irq_mask = nochip_noop, 22771045520SRussell King .irq_unmask = nochip_noop, 22871045520SRussell King }; 22971045520SRussell King 23092e617d9SRussell King static struct sa1111_platform_data sa1111_info = { 23192e617d9SRussell King .irq_base = IRQ_BOARD_END, 23292e617d9SRussell King }; 23392e617d9SRussell King 234cdea4606SRussell King static int __devinit neponset_probe(struct platform_device *dev) 2351da177e4SLinus Torvalds { 236ae14c2e2SRussell King struct neponset_drvdata *d; 237f942b0fdSRussell King struct resource *nep_res, *sa1111_res, *smc91x_res; 238ced8d21cSRussell King struct resource sa1111_resources[] = { 239ced8d21cSRussell King DEFINE_RES_MEM(0x40000000, SZ_8K), 240ced8d21cSRussell King { .flags = IORESOURCE_IRQ }, 241ced8d21cSRussell King }; 2429590e898SRussell King struct platform_device_info sa1111_devinfo = { 2439590e898SRussell King .parent = &dev->dev, 2449590e898SRussell King .name = "sa1111", 2459590e898SRussell King .id = 0, 2469590e898SRussell King .res = sa1111_resources, 2479590e898SRussell King .num_res = ARRAY_SIZE(sa1111_resources), 2489590e898SRussell King .data = &sa1111_info, 2499590e898SRussell King .size_data = sizeof(sa1111_info), 2509590e898SRussell King .dma_mask = 0xffffffffUL, 2519590e898SRussell King }; 252ced8d21cSRussell King struct resource smc91x_resources[] = { 253ced8d21cSRussell King DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS, 254ced8d21cSRussell King 0x02000000, "smc91x-regs"), 255ced8d21cSRussell King DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS + 0x02000000, 256ced8d21cSRussell King 0x02000000, "smc91x-attrib"), 257ced8d21cSRussell King { .flags = IORESOURCE_IRQ }, 258ced8d21cSRussell King }; 2599590e898SRussell King struct platform_device_info smc91x_devinfo = { 2609590e898SRussell King .parent = &dev->dev, 2619590e898SRussell King .name = "smc91x", 2629590e898SRussell King .id = 0, 2639590e898SRussell King .res = smc91x_resources, 2649590e898SRussell King .num_res = ARRAY_SIZE(smc91x_resources), 2659590e898SRussell King }; 266b6bdfcf5SRussell King int ret, irq; 267b6bdfcf5SRussell King 268f942b0fdSRussell King if (nep_base) 269f942b0fdSRussell King return -EBUSY; 270f942b0fdSRussell King 271b6bdfcf5SRussell King irq = ret = platform_get_irq(dev, 0); 272b6bdfcf5SRussell King if (ret < 0) 273b6bdfcf5SRussell King goto err_alloc; 274ae14c2e2SRussell King 275f942b0fdSRussell King nep_res = platform_get_resource(dev, IORESOURCE_MEM, 0); 276d2e539a5SRussell King smc91x_res = platform_get_resource(dev, IORESOURCE_MEM, 1); 277d2e539a5SRussell King sa1111_res = platform_get_resource(dev, IORESOURCE_MEM, 2); 278f942b0fdSRussell King if (!nep_res || !smc91x_res || !sa1111_res) { 279d2e539a5SRussell King ret = -ENXIO; 280d2e539a5SRussell King goto err_alloc; 281d2e539a5SRussell King } 282d2e539a5SRussell King 283ae14c2e2SRussell King d = kzalloc(sizeof(*d), GFP_KERNEL); 284ae14c2e2SRussell King if (!d) { 285ae14c2e2SRussell King ret = -ENOMEM; 286ae14c2e2SRussell King goto err_alloc; 287ae14c2e2SRussell King } 288ae14c2e2SRussell King 289f942b0fdSRussell King d->base = ioremap(nep_res->start, SZ_4K); 290f942b0fdSRussell King if (!d->base) { 291f942b0fdSRussell King ret = -ENOMEM; 292f942b0fdSRussell King goto err_ioremap; 293f942b0fdSRussell King } 294f942b0fdSRussell King 295f942b0fdSRussell King if (readb_relaxed(d->base + WHOAMI) != 0x11) { 296f942b0fdSRussell King dev_warn(&dev->dev, "Neponset board detected, but wrong ID: %02x\n", 297f942b0fdSRussell King readb_relaxed(d->base + WHOAMI)); 298f942b0fdSRussell King ret = -ENODEV; 299f942b0fdSRussell King goto err_id; 300f942b0fdSRussell King } 301f942b0fdSRussell King 302ced8d21cSRussell King ret = irq_alloc_descs(-1, IRQ_BOARD_START, NEP_IRQ_NR, -1); 303ced8d21cSRussell King if (ret <= 0) { 304ced8d21cSRussell King dev_err(&dev->dev, "unable to allocate %u irqs: %d\n", 305ced8d21cSRussell King NEP_IRQ_NR, ret); 306ced8d21cSRussell King if (ret == 0) 307ced8d21cSRussell King ret = -ENOMEM; 308ced8d21cSRussell King goto err_irq_alloc; 309ced8d21cSRussell King } 3101da177e4SLinus Torvalds 311ced8d21cSRussell King d->irq_base = ret; 312ced8d21cSRussell King 313ced8d21cSRussell King irq_set_chip_and_handler(d->irq_base + NEP_IRQ_SMC91X, &nochip, 314ced8d21cSRussell King handle_simple_irq); 315ced8d21cSRussell King set_irq_flags(d->irq_base + NEP_IRQ_SMC91X, IRQF_VALID | IRQF_PROBE); 316ced8d21cSRussell King irq_set_chip_and_handler(d->irq_base + NEP_IRQ_USAR, &nochip, 317ced8d21cSRussell King handle_simple_irq); 318ced8d21cSRussell King set_irq_flags(d->irq_base + NEP_IRQ_USAR, IRQF_VALID | IRQF_PROBE); 319ced8d21cSRussell King irq_set_chip(d->irq_base + NEP_IRQ_SA1111, &nochip); 320ced8d21cSRussell King 321b6bdfcf5SRussell King irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING); 322b6bdfcf5SRussell King irq_set_handler_data(irq, d); 323b6bdfcf5SRussell King irq_set_chained_handler(irq, neponset_irq_handler); 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds /* 326ced8d21cSRussell King * We would set IRQ_GPIO25 to be a wake-up IRQ, but unfortunately 327ced8d21cSRussell King * something on the Neponset activates this IRQ on sleep (eth?) 3281da177e4SLinus Torvalds */ 3291da177e4SLinus Torvalds #if 0 330b6bdfcf5SRussell King enable_irq_wake(irq); 3311da177e4SLinus Torvalds #endif 3321da177e4SLinus Torvalds 333ced8d21cSRussell King dev_info(&dev->dev, "Neponset daughter board, providing IRQ%u-%u\n", 334ced8d21cSRussell King d->irq_base, d->irq_base + NEP_IRQ_NR - 1); 335f942b0fdSRussell King nep_base = d->base; 3361da177e4SLinus Torvalds 337ced8d21cSRussell King sa1100_register_uart_fns(&neponset_port_fns); 338ced8d21cSRussell King 339bab50a35SRussell King /* Ensure that the memory bus request/grant signals are setup */ 340bab50a35SRussell King sa1110_mb_disable(); 341bab50a35SRussell King 342ced8d21cSRussell King /* Disable GPIO 0/1 drivers so the buttons work on the Assabet */ 343f942b0fdSRussell King writeb_relaxed(NCR_GP01_OFF, d->base + NCR_0); 3441da177e4SLinus Torvalds 345d2e539a5SRussell King sa1111_resources[0].parent = sa1111_res; 346ced8d21cSRussell King sa1111_resources[1].start = d->irq_base + NEP_IRQ_SA1111; 347ced8d21cSRussell King sa1111_resources[1].end = d->irq_base + NEP_IRQ_SA1111; 3489590e898SRussell King d->sa1111 = platform_device_register_full(&sa1111_devinfo); 349ced8d21cSRussell King 350d2e539a5SRussell King smc91x_resources[0].parent = smc91x_res; 351d2e539a5SRussell King smc91x_resources[1].parent = smc91x_res; 352ced8d21cSRussell King smc91x_resources[2].start = d->irq_base + NEP_IRQ_SMC91X; 353ced8d21cSRussell King smc91x_resources[2].end = d->irq_base + NEP_IRQ_SMC91X; 3549590e898SRussell King d->smc91x = platform_device_register_full(&smc91x_devinfo); 3559590e898SRussell King 356ae14c2e2SRussell King platform_set_drvdata(dev, d); 357ae14c2e2SRussell King 358ae14c2e2SRussell King return 0; 359ae14c2e2SRussell King 360ced8d21cSRussell King err_irq_alloc: 361f942b0fdSRussell King err_id: 362f942b0fdSRussell King iounmap(d->base); 363f942b0fdSRussell King err_ioremap: 364ced8d21cSRussell King kfree(d); 365ae14c2e2SRussell King err_alloc: 366ae14c2e2SRussell King return ret; 367ae14c2e2SRussell King } 368ae14c2e2SRussell King 369ae14c2e2SRussell King static int __devexit neponset_remove(struct platform_device *dev) 370ae14c2e2SRussell King { 371ae14c2e2SRussell King struct neponset_drvdata *d = platform_get_drvdata(dev); 372b6bdfcf5SRussell King int irq = platform_get_irq(dev, 0); 373ae14c2e2SRussell King 3749590e898SRussell King if (!IS_ERR(d->sa1111)) 3759590e898SRussell King platform_device_unregister(d->sa1111); 3769590e898SRussell King if (!IS_ERR(d->smc91x)) 3779590e898SRussell King platform_device_unregister(d->smc91x); 378b6bdfcf5SRussell King irq_set_chained_handler(irq, NULL); 379ced8d21cSRussell King irq_free_descs(d->irq_base, NEP_IRQ_NR); 380f942b0fdSRussell King nep_base = NULL; 381f942b0fdSRussell King iounmap(d->base); 382ae14c2e2SRussell King kfree(d); 383ae14c2e2SRussell King 3841da177e4SLinus Torvalds return 0; 3851da177e4SLinus Torvalds } 3861da177e4SLinus Torvalds 38751f93390SRussell King #ifdef CONFIG_PM_SLEEP 38851f93390SRussell King static int neponset_suspend(struct device *dev) 3891da177e4SLinus Torvalds { 39051f93390SRussell King struct neponset_drvdata *d = dev_get_drvdata(dev); 391ae14c2e2SRussell King 392f942b0fdSRussell King d->ncr0 = readb_relaxed(d->base + NCR_0); 393f942b0fdSRussell King d->mdm_ctl_0 = readb_relaxed(d->base + MDM_CTL_0); 3941da177e4SLinus Torvalds 3951da177e4SLinus Torvalds return 0; 3961da177e4SLinus Torvalds } 3971da177e4SLinus Torvalds 39851f93390SRussell King static int neponset_resume(struct device *dev) 3991da177e4SLinus Torvalds { 40051f93390SRussell King struct neponset_drvdata *d = dev_get_drvdata(dev); 401ae14c2e2SRussell King 402f942b0fdSRussell King writeb_relaxed(d->ncr0, d->base + NCR_0); 403f942b0fdSRussell King writeb_relaxed(d->mdm_ctl_0, d->base + MDM_CTL_0); 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvalds return 0; 4061da177e4SLinus Torvalds } 4071da177e4SLinus Torvalds 40851f93390SRussell King static const struct dev_pm_ops neponset_pm_ops = { 40951f93390SRussell King .suspend_noirq = neponset_suspend, 41051f93390SRussell King .resume_noirq = neponset_resume, 41151f93390SRussell King .freeze_noirq = neponset_suspend, 41251f93390SRussell King .restore_noirq = neponset_resume, 41351f93390SRussell King }; 41451f93390SRussell King #define PM_OPS &neponset_pm_ops 4151da177e4SLinus Torvalds #else 41651f93390SRussell King #define PM_OPS NULL 4171da177e4SLinus Torvalds #endif 4181da177e4SLinus Torvalds 4193ae5eaecSRussell King static struct platform_driver neponset_device_driver = { 4201da177e4SLinus Torvalds .probe = neponset_probe, 421ae14c2e2SRussell King .remove = __devexit_p(neponset_remove), 4223ae5eaecSRussell King .driver = { 4233ae5eaecSRussell King .name = "neponset", 424398e58d0SRussell King .owner = THIS_MODULE, 42551f93390SRussell King .pm = PM_OPS, 4263ae5eaecSRussell King }, 4271da177e4SLinus Torvalds }; 4281da177e4SLinus Torvalds 4291da177e4SLinus Torvalds static int __init neponset_init(void) 4301da177e4SLinus Torvalds { 431bab50a35SRussell King return platform_driver_register(&neponset_device_driver); 4321da177e4SLinus Torvalds } 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds subsys_initcall(neponset_init); 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds static struct map_desc neponset_io_desc[] __initdata = { 43792519d82SDeepak Saxena { /* System Registers */ 43892519d82SDeepak Saxena .virtual = 0xf3000000, 43992519d82SDeepak Saxena .pfn = __phys_to_pfn(0x10000000), 44092519d82SDeepak Saxena .length = SZ_1M, 44192519d82SDeepak Saxena .type = MT_DEVICE 44292519d82SDeepak Saxena }, { /* SA-1111 */ 44392519d82SDeepak Saxena .virtual = 0xf4000000, 44492519d82SDeepak Saxena .pfn = __phys_to_pfn(0x40000000), 44592519d82SDeepak Saxena .length = SZ_1M, 44692519d82SDeepak Saxena .type = MT_DEVICE 44792519d82SDeepak Saxena } 4481da177e4SLinus Torvalds }; 4491da177e4SLinus Torvalds 4501da177e4SLinus Torvalds void __init neponset_map_io(void) 4511da177e4SLinus Torvalds { 4521da177e4SLinus Torvalds iotable_init(neponset_io_desc, ARRAY_SIZE(neponset_io_desc)); 4531da177e4SLinus Torvalds } 454