diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-11 21:55:47 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-11 21:55:47 -0700 |
commit | e86908614f2c7fec401827e5cefd7a6ea9407f85 (patch) | |
tree | fcb5d9e52422b37bdaf0e647126ebdfc1680f162 /arch/powerpc/sysdev/fsl_soc.c | |
parent | 547307420931344a868275bd7ea7a30f117a15a9 (diff) | |
parent | 9b4b8feb962f4b3e74768b7205f1f8f6cce87238 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (408 commits)
[POWERPC] Add memchr() to the bootwrapper
[POWERPC] Implement logging of unhandled signals
[POWERPC] Add legacy serial support for OPB with flattened device tree
[POWERPC] Use 1TB segments
[POWERPC] XilinxFB: Allow fixed framebuffer base address
[POWERPC] XilinxFB: Add support for custom screen resolution
[POWERPC] XilinxFB: Use pdata to pass around framebuffer parameters
[POWERPC] PCI: Add 64-bit physical address support to setup_indirect_pci
[POWERPC] 4xx: Kilauea defconfig file
[POWERPC] 4xx: Kilauea DTS
[POWERPC] 4xx: Add AMCC Kilauea eval board support to platforms/40x
[POWERPC] 4xx: Add AMCC 405EX support to cputable.c
[POWERPC] Adjust TASK_SIZE on ppc32 systems to 3GB that are capable
[POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers
[POWERPC] 85xx: Enable FP emulation in MPC8560 ADS defconfig
[POWERPC] 85xx: Killed <asm/mpc85xx.h>
[POWERPC] 85xx: Add cpm nodes for 8541/8555 CDS
[POWERPC] 85xx: Convert mpc8560ads to the new CPM binding.
[POWERPC] mpc8272ads: Remove muram from the CPM reg property.
[POWERPC] Make clockevents work on PPC601 processors
...
Fixed up conflict in Documentation/powerpc/booting-without-of.txt manually.
Diffstat (limited to 'arch/powerpc/sysdev/fsl_soc.c')
-rw-r--r-- | arch/powerpc/sysdev/fsl_soc.c | 187 |
1 files changed, 170 insertions, 17 deletions
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c index 1cf29c9d440..3ace7474809 100644 --- a/arch/powerpc/sysdev/fsl_soc.c +++ b/arch/powerpc/sysdev/fsl_soc.c @@ -24,6 +24,7 @@ #include <linux/platform_device.h> #include <linux/of_platform.h> #include <linux/phy.h> +#include <linux/spi/spi.h> #include <linux/fsl_devices.h> #include <linux/fs_enet_pd.h> #include <linux/fs_uart_pd.h> @@ -52,13 +53,13 @@ phys_addr_t get_immrbase(void) soc = of_find_node_by_type(NULL, "soc"); if (soc) { - unsigned int size; + int size; const void *prop = of_get_property(soc, "reg", &size); if (prop) immrbase = of_translate_address(soc, prop); of_node_put(soc); - }; + } return immrbase; } @@ -72,20 +73,31 @@ static u32 brgfreq = -1; u32 get_brgfreq(void) { struct device_node *node; + const unsigned int *prop; + int size; if (brgfreq != -1) return brgfreq; - node = of_find_node_by_type(NULL, "cpm"); + node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg"); if (node) { - unsigned int size; - const unsigned int *prop = of_get_property(node, - "brg-frequency", &size); + prop = of_get_property(node, "clock-frequency", &size); + if (prop && size == 4) + brgfreq = *prop; - if (prop) + of_node_put(node); + return brgfreq; + } + + /* Legacy device binding -- will go away when no users are left. */ + node = of_find_node_by_type(NULL, "cpm"); + if (node) { + prop = of_get_property(node, "brg-frequency", &size); + if (prop && size == 4) brgfreq = *prop; + of_node_put(node); - }; + } return brgfreq; } @@ -103,14 +115,14 @@ u32 get_baudrate(void) node = of_find_node_by_type(NULL, "serial"); if (node) { - unsigned int size; + int size; const unsigned int *prop = of_get_property(node, "current-speed", &size); if (prop) fs_baudrate = *prop; of_node_put(node); - }; + } return fs_baudrate; } @@ -319,34 +331,46 @@ static struct i2c_driver_device i2c_devices[] __initdata = { {"ricoh,rs5c372b", "rtc-rs5c372", "rs5c372b",}, {"ricoh,rv5c386", "rtc-rs5c372", "rv5c386",}, {"ricoh,rv5c387a", "rtc-rs5c372", "rv5c387a",}, + {"dallas,ds1307", "rtc-ds1307", "ds1307",}, + {"dallas,ds1337", "rtc-ds1307", "ds1337",}, + {"dallas,ds1338", "rtc-ds1307", "ds1338",}, + {"dallas,ds1339", "rtc-ds1307", "ds1339",}, + {"dallas,ds1340", "rtc-ds1307", "ds1340",}, + {"stm,m41t00", "rtc-ds1307", "m41t00"}, + {"dallas,ds1374", "rtc-ds1374", "rtc-ds1374",}, }; -static int __init of_find_i2c_driver(struct device_node *node, struct i2c_board_info *info) +static int __init of_find_i2c_driver(struct device_node *node, + struct i2c_board_info *info) { int i; for (i = 0; i < ARRAY_SIZE(i2c_devices); i++) { if (!of_device_is_compatible(node, i2c_devices[i].of_device)) continue; - strncpy(info->driver_name, i2c_devices[i].i2c_driver, KOBJ_NAME_LEN); - strncpy(info->type, i2c_devices[i].i2c_type, I2C_NAME_SIZE); + if (strlcpy(info->driver_name, i2c_devices[i].i2c_driver, + KOBJ_NAME_LEN) >= KOBJ_NAME_LEN || + strlcpy(info->type, i2c_devices[i].i2c_type, + I2C_NAME_SIZE) >= I2C_NAME_SIZE) + return -ENOMEM; return 0; } return -ENODEV; } -static void __init of_register_i2c_devices(struct device_node *adap_node, int bus_num) +static void __init of_register_i2c_devices(struct device_node *adap_node, + int bus_num) { struct device_node *node = NULL; while ((node = of_get_next_child(adap_node, node))) { - struct i2c_board_info info; + struct i2c_board_info info = {}; const u32 *addr; int len; addr = of_get_property(node, "reg", &len); if (!addr || len < sizeof(int) || *addr > (1 << 10) - 1) { - printk(KERN_WARNING "fsl_ioc.c: invalid i2c device entry\n"); + printk(KERN_WARNING "fsl_soc.c: invalid i2c device entry\n"); continue; } @@ -357,7 +381,6 @@ static void __init of_register_i2c_devices(struct device_node *adap_node, int bu if (of_find_i2c_driver(node, &info) < 0) continue; - info.platform_data = NULL; info.addr = *addr; i2c_register_board_info(bus_num, &info, 1); @@ -648,6 +671,7 @@ err: arch_initcall(fsl_usb_of_init); +#ifndef CONFIG_PPC_CPM_NEW_BINDING #ifdef CONFIG_CPM2 extern void init_scc_ioports(struct fs_uart_platform_info*); @@ -1187,3 +1211,132 @@ err: arch_initcall(cpm_smc_uart_of_init); #endif /* CONFIG_8xx */ +#endif /* CONFIG_PPC_CPM_NEW_BINDING */ + +int __init fsl_spi_init(struct spi_board_info *board_infos, + unsigned int num_board_infos, + void (*activate_cs)(u8 cs, u8 polarity), + void (*deactivate_cs)(u8 cs, u8 polarity)) +{ + struct device_node *np; + unsigned int i; + const u32 *sysclk; + + /* SPI controller is either clocked from QE or SoC clock */ + np = of_find_node_by_type(NULL, "qe"); + if (!np) + np = of_find_node_by_type(NULL, "soc"); + + if (!np) + return -ENODEV; + + sysclk = of_get_property(np, "bus-frequency", NULL); + if (!sysclk) + return -ENODEV; + + for (np = NULL, i = 1; + (np = of_find_compatible_node(np, "spi", "fsl_spi")) != NULL; + i++) { + int ret = 0; + unsigned int j; + const void *prop; + struct resource res[2]; + struct platform_device *pdev; + struct fsl_spi_platform_data pdata = { + .activate_cs = activate_cs, + .deactivate_cs = deactivate_cs, + }; + + memset(res, 0, sizeof(res)); + + pdata.sysclk = *sysclk; + + prop = of_get_property(np, "reg", NULL); + if (!prop) + goto err; + pdata.bus_num = *(u32 *)prop; + + prop = of_get_property(np, "mode", NULL); + if (prop && !strcmp(prop, "cpu-qe")) + pdata.qe_mode = 1; + + for (j = 0; j < num_board_infos; j++) { + if (board_infos[j].bus_num == pdata.bus_num) + pdata.max_chipselect++; + } + + if (!pdata.max_chipselect) + goto err; + + ret = of_address_to_resource(np, 0, &res[0]); + if (ret) + goto err; + + ret = of_irq_to_resource(np, 0, &res[1]); + if (ret == NO_IRQ) + goto err; + + pdev = platform_device_alloc("mpc83xx_spi", i); + if (!pdev) + goto err; + + ret = platform_device_add_data(pdev, &pdata, sizeof(pdata)); + if (ret) + goto unreg; + + ret = platform_device_add_resources(pdev, res, + ARRAY_SIZE(res)); + if (ret) + goto unreg; + + ret = platform_device_register(pdev); + if (ret) + goto unreg; + + continue; +unreg: + platform_device_del(pdev); +err: + continue; + } + + return spi_register_board_info(board_infos, num_board_infos); +} + +#if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx) +static __be32 __iomem *rstcr; + +static int __init setup_rstcr(void) +{ + struct device_node *np; + np = of_find_node_by_name(NULL, "global-utilities"); + if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) { + const u32 *prop = of_get_property(np, "reg", NULL); + if (prop) { + /* map reset control register + * 0xE00B0 is offset of reset control register + */ + rstcr = ioremap(get_immrbase() + *prop + 0xB0, 0xff); + if (!rstcr) + printk (KERN_EMERG "Error: reset control " + "register not mapped!\n"); + } + } else + printk (KERN_INFO "rstcr compatible register does not exist!\n"); + if (np) + of_node_put(np); + return 0; +} + +arch_initcall(setup_rstcr); + +void fsl_rstcr_restart(char *cmd) +{ + local_irq_disable(); + if (rstcr) + /* set reset control register */ + out_be32(rstcr, 0x2); /* HRESET_REQ */ + + while (1) ; +} +#endif |