From 6eb9d32298290b956693fd85c815b817d39a9505 Mon Sep 17 00:00:00 2001 From: Andre Schwarz Date: Thu, 10 Jul 2008 11:53:16 +0200 Subject: powerpc/mpc5200: PCI write combine timer On MPC5200 the PCI target control register (PCITCR) @ MBAR + 0xD6C is initialized with only bit 7 (Latrule disable) set. The 8-Bit write combine timer (Bits 24..31) should be also set to a reasonable value _greater zero_ (0x08 = default) since setting it to 0x00 leads to _very poor_ performance as a PCI target since external burst won't be possible at all. Setting the WCT to 0x08 (cache-line size) leads to good overall perfomance. Signed-off-by: Andre Schwarz Signed-off-by: Grant Likely --- arch/powerpc/platforms/52xx/mpc52xx_pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pci.c b/arch/powerpc/platforms/52xx/mpc52xx_pci.c index e3428ddd904..5a382bb15f6 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_pci.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_pci.c @@ -63,6 +63,7 @@ #define MPC52xx_PCI_TCR_P 0x01000000 #define MPC52xx_PCI_TCR_LD 0x00010000 +#define MPC52xx_PCI_TCR_WCT8 0x00000008 #define MPC52xx_PCI_TBATR_DISABLE 0x0 #define MPC52xx_PCI_TBATR_ENABLE 0x1 @@ -313,7 +314,7 @@ mpc52xx_pci_setup(struct pci_controller *hose, out_be32(&pci_regs->tbatr1, MPC52xx_PCI_TBATR_ENABLE | MPC52xx_PCI_TARGET_MEM ); - out_be32(&pci_regs->tcr, MPC52xx_PCI_TCR_LD); + out_be32(&pci_regs->tcr, MPC52xx_PCI_TCR_LD | MPC52xx_PCI_TCR_WCT8); tmp = in_be32(&pci_regs->gscr); #if 0 -- cgit v1.2.3 From 0d1cde235874b00905bce23f659690d060ebf475 Mon Sep 17 00:00:00 2001 From: Jon Smirl Date: Mon, 30 Jun 2008 19:01:26 -0400 Subject: powerpc/i2c: Convert i2c-mpc into an of_platform driver Convert i2c-mpc to an of_platform driver. Utilize the code in drivers/of-i2c.c to make i2c modules dynamically loadable by the device tree. Signed-off-by: Jon Smirl Signed-off-by: Grant Likely --- arch/powerpc/sysdev/fsl_soc.c | 133 ------------------------------------------ drivers/i2c/busses/i2c-mpc.c | 104 +++++++++++++++++++-------------- 2 files changed, 60 insertions(+), 177 deletions(-) diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c index ca54563d5c7..ebcec7362f9 100644 --- a/arch/powerpc/sysdev/fsl_soc.c +++ b/arch/powerpc/sysdev/fsl_soc.c @@ -414,139 +414,6 @@ err: arch_initcall(gfar_of_init); -#ifdef CONFIG_I2C_BOARDINFO -#include -struct i2c_driver_device { - char *of_device; - char *i2c_type; -}; - -static struct i2c_driver_device i2c_devices[] __initdata = { - {"ricoh,rs5c372a", "rs5c372a"}, - {"ricoh,rs5c372b", "rs5c372b"}, - {"ricoh,rv5c386", "rv5c386"}, - {"ricoh,rv5c387a", "rv5c387a"}, - {"dallas,ds1307", "ds1307"}, - {"dallas,ds1337", "ds1337"}, - {"dallas,ds1338", "ds1338"}, - {"dallas,ds1339", "ds1339"}, - {"dallas,ds1340", "ds1340"}, - {"stm,m41t00", "m41t00"}, - {"dallas,ds1374", "ds1374"}, - {"cirrus,cs4270", "cs4270"}, -}; - -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; - if (strlcpy(info->type, i2c_devices[i].i2c_type, - I2C_NAME_SIZE) >= I2C_NAME_SIZE) - return -ENOMEM; - return 0; - } - - pr_warning("fsl_soc.c: unrecognized i2c node %s\n", - (const char *) of_get_property(node, "compatible", NULL)); - - return -ENODEV; -} - -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 = {}; - 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_soc.c: invalid i2c device entry\n"); - continue; - } - - info.irq = irq_of_parse_and_map(node, 0); - if (info.irq == NO_IRQ) - info.irq = -1; - - if (of_find_i2c_driver(node, &info) < 0) - continue; - - info.addr = *addr; - - i2c_register_board_info(bus_num, &info, 1); - } -} - -static int __init fsl_i2c_of_init(void) -{ - struct device_node *np; - unsigned int i = 0; - struct platform_device *i2c_dev; - int ret; - - for_each_compatible_node(np, NULL, "fsl-i2c") { - struct resource r[2]; - struct fsl_i2c_platform_data i2c_data; - const unsigned char *flags = NULL; - int idx; - const u32 *iprop; - - memset(&r, 0, sizeof(r)); - memset(&i2c_data, 0, sizeof(i2c_data)); - - ret = of_address_to_resource(np, 0, &r[0]); - if (ret) - goto err; - - of_irq_to_resource(np, 0, &r[1]); - - iprop = of_get_property(np, "cell-index", NULL); - idx = iprop ? *iprop : i; - - i2c_dev = platform_device_register_simple("fsl-i2c", idx, r, 2); - if (IS_ERR(i2c_dev)) { - ret = PTR_ERR(i2c_dev); - goto err; - } - - i2c_data.device_flags = 0; - flags = of_get_property(np, "dfsrr", NULL); - if (flags) - i2c_data.device_flags |= FSL_I2C_DEV_SEPARATE_DFSRR; - - flags = of_get_property(np, "fsl5200-clocking", NULL); - if (flags) - i2c_data.device_flags |= FSL_I2C_DEV_CLOCK_5200; - - ret = - platform_device_add_data(i2c_dev, &i2c_data, - sizeof(struct - fsl_i2c_platform_data)); - if (ret) - goto unreg; - - of_register_i2c_devices(np, idx); - i++; - } - - return 0; - -unreg: - platform_device_unregister(i2c_dev); -err: - return ret; -} - -arch_initcall(fsl_i2c_of_init); -#endif #ifdef CONFIG_PPC_83xx static int __init mpc83xx_wdt_init(void) diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index a076129de7e..4fdfb62d6f3 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -17,7 +17,8 @@ #include #include #include -#include +#include +#include #include #include @@ -25,13 +26,13 @@ #include #include -#define MPC_I2C_ADDR 0x00 +#define DRV_NAME "mpc-i2c" + #define MPC_I2C_FDR 0x04 #define MPC_I2C_CR 0x08 #define MPC_I2C_SR 0x0c #define MPC_I2C_DR 0x10 #define MPC_I2C_DFSRR 0x14 -#define MPC_I2C_REGION 0x20 #define CCR_MEN 0x80 #define CCR_MIEN 0x40 @@ -315,102 +316,117 @@ static struct i2c_adapter mpc_ops = { .timeout = 1, }; -static int fsl_i2c_probe(struct platform_device *pdev) +static int __devinit fsl_i2c_probe(struct of_device *op, const struct of_device_id *match) { int result = 0; struct mpc_i2c *i2c; - struct fsl_i2c_platform_data *pdata; - struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - pdata = (struct fsl_i2c_platform_data *) pdev->dev.platform_data; i2c = kzalloc(sizeof(*i2c), GFP_KERNEL); if (!i2c) return -ENOMEM; - i2c->irq = platform_get_irq(pdev, 0); - if (i2c->irq < 0) - i2c->irq = NO_IRQ; /* Use polling */ + if (of_get_property(op->node, "dfsrr", NULL)) + i2c->flags |= FSL_I2C_DEV_SEPARATE_DFSRR; - i2c->flags = pdata->device_flags; - init_waitqueue_head(&i2c->queue); + if (of_device_is_compatible(op->node, "fsl,mpc5200-i2c") || + of_device_is_compatible(op->node, "mpc5200-i2c")) + i2c->flags |= FSL_I2C_DEV_CLOCK_5200; - i2c->base = ioremap((phys_addr_t)r->start, MPC_I2C_REGION); + init_waitqueue_head(&i2c->queue); + i2c->base = of_iomap(op->node, 0); if (!i2c->base) { printk(KERN_ERR "i2c-mpc - failed to map controller\n"); result = -ENOMEM; goto fail_map; } - if (i2c->irq != NO_IRQ) - if ((result = request_irq(i2c->irq, mpc_i2c_isr, - IRQF_SHARED, "i2c-mpc", i2c)) < 0) { - printk(KERN_ERR - "i2c-mpc - failed to attach interrupt\n"); - goto fail_irq; + i2c->irq = irq_of_parse_and_map(op->node, 0); + if (i2c->irq != NO_IRQ) { /* i2c->irq = NO_IRQ implies polling */ + result = request_irq(i2c->irq, mpc_i2c_isr, + IRQF_SHARED, "i2c-mpc", i2c); + if (result < 0) { + printk(KERN_ERR "i2c-mpc - failed to attach interrupt\n"); + goto fail_request; } - + } + mpc_i2c_setclock(i2c); - platform_set_drvdata(pdev, i2c); + + dev_set_drvdata(&op->dev, i2c); i2c->adap = mpc_ops; - i2c->adap.nr = pdev->id; i2c_set_adapdata(&i2c->adap, i2c); - i2c->adap.dev.parent = &pdev->dev; - if ((result = i2c_add_numbered_adapter(&i2c->adap)) < 0) { + i2c->adap.dev.parent = &op->dev; + + result = i2c_add_adapter(&i2c->adap); + if (result < 0) { printk(KERN_ERR "i2c-mpc - failed to add adapter\n"); goto fail_add; } + of_register_i2c_devices(&i2c->adap, op->node); return result; - fail_add: - if (i2c->irq != NO_IRQ) - free_irq(i2c->irq, i2c); - fail_irq: - iounmap(i2c->base); - fail_map: + fail_add: + dev_set_drvdata(&op->dev, NULL); + free_irq(i2c->irq, i2c); + fail_request: + irq_dispose_mapping(i2c->irq); + iounmap(i2c->base); + fail_map: kfree(i2c); return result; }; -static int fsl_i2c_remove(struct platform_device *pdev) +static int __devexit fsl_i2c_remove(struct of_device *op) { - struct mpc_i2c *i2c = platform_get_drvdata(pdev); + struct mpc_i2c *i2c = dev_get_drvdata(&op->dev); i2c_del_adapter(&i2c->adap); - platform_set_drvdata(pdev, NULL); + dev_set_drvdata(&op->dev, NULL); if (i2c->irq != NO_IRQ) free_irq(i2c->irq, i2c); + irq_dispose_mapping(i2c->irq); iounmap(i2c->base); kfree(i2c); return 0; }; -/* work with hotplug and coldplug */ -MODULE_ALIAS("platform:fsl-i2c"); +static const struct of_device_id mpc_i2c_of_match[] = { + {.compatible = "fsl-i2c",}, + {}, +}; +MODULE_DEVICE_TABLE(of, mpc_i2c_of_match); + /* Structure for a device driver */ -static struct platform_driver fsl_i2c_driver = { - .probe = fsl_i2c_probe, - .remove = fsl_i2c_remove, - .driver = { - .owner = THIS_MODULE, - .name = "fsl-i2c", +static struct of_platform_driver mpc_i2c_driver = { + .match_table = mpc_i2c_of_match, + .probe = fsl_i2c_probe, + .remove = __devexit_p(fsl_i2c_remove), + .driver = { + .owner = THIS_MODULE, + .name = DRV_NAME, }, }; static int __init fsl_i2c_init(void) { - return platform_driver_register(&fsl_i2c_driver); + int rv; + + rv = of_register_platform_driver(&mpc_i2c_driver); + if (rv) + printk(KERN_ERR DRV_NAME + " of_register_platform_driver failed (%i)\n", rv); + return rv; } static void __exit fsl_i2c_exit(void) { - platform_driver_unregister(&fsl_i2c_driver); + of_unregister_platform_driver(&mpc_i2c_driver); } module_init(fsl_i2c_init); -- cgit v1.2.3 From f40987b64d0f4d40b006ce09e37161b57c1e970b Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Tue, 8 Jul 2008 06:38:24 -0400 Subject: OpenFirmware: Include from of_i2c.c. drivers/of/of_i2c.c should include for the prototype for of_register_i2c_devices(). Signed-off-by: Robert P. J. Day Acked-by: Jean Delvare Acked-by: Jochen Friedrich Acked-by: Stephen Rothwell Signed-off-by: Grant Likely --- drivers/of/of_i2c.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/of/of_i2c.c b/drivers/of/of_i2c.c index b2ccdcbeb89..5c015d310d4 100644 --- a/drivers/of/of_i2c.c +++ b/drivers/of/of_i2c.c @@ -13,6 +13,7 @@ #include #include +#include #include struct i2c_driver_device { -- cgit v1.2.3 From b0852cb8841f35b124f4344d92abd8c0a6b54fcf Mon Sep 17 00:00:00 2001 From: Wolfgang Grandegger Date: Wed, 2 Jul 2008 11:56:40 +0200 Subject: powerpc/mpc5200: add missing MSCAN FDT nodes for TQM52xx This patch adds the still missing FDT nodes for the MSCAN devices for the TQM52xx modules. Signed-off-by: Wolfgang Grandegger Signed-off-by: Grant Likely --- arch/powerpc/boot/dts/tqm5200.dts | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/powerpc/boot/dts/tqm5200.dts b/arch/powerpc/boot/dts/tqm5200.dts index 773a68e0005..3008bf8830c 100644 --- a/arch/powerpc/boot/dts/tqm5200.dts +++ b/arch/powerpc/boot/dts/tqm5200.dts @@ -70,6 +70,20 @@ fsl,has-wdt; }; + can@900 { + compatible = "fsl,mpc5200-mscan"; + interrupts = <2 17 0>; + interrupt-parent = <&mpc5200_pic>; + reg = <0x900 0x80>; + }; + + can@980 { + compatible = "fsl,mpc5200-mscan"; + interrupts = <2 18 0>; + interrupt-parent = <&mpc5200_pic>; + reg = <0x980 0x80>; + }; + gpio@b00 { compatible = "fsl,mpc5200-gpio"; reg = <0xb00 0x40>; -- cgit v1.2.3 From e6a9192d066b30353b78ce1647070c0c171dd9a7 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Fri, 23 May 2008 16:16:27 +1000 Subject: powerpc/pata_mpc52xx: use linux/of_platform.h instead of asm Signed-off-by: Stephen Rothwell Signed-off-by: Grant Likely --- drivers/ata/pata_mpc52xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c index bc79df6e7cb..a9e827356d0 100644 --- a/drivers/ata/pata_mpc52xx.c +++ b/drivers/ata/pata_mpc52xx.c @@ -16,10 +16,10 @@ #include #include #include +#include #include #include -#include #include -- cgit v1.2.3 From 76ef7dd030823518506d65237a12666fc3f5a0d4 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Fri, 23 May 2008 16:35:47 +1000 Subject: powerpc/mpc52xx_psc_spi: use linux/of_platform.h instead of asm Signed-off-by: Stephen Rothwell Signed-off-by: Grant Likely --- drivers/spi/mpc52xx_psc_spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/mpc52xx_psc_spi.c b/drivers/spi/mpc52xx_psc_spi.c index 681d62325d3..604e5f0a2d9 100644 --- a/drivers/spi/mpc52xx_psc_spi.c +++ b/drivers/spi/mpc52xx_psc_spi.c @@ -17,7 +17,7 @@ #include #if defined(CONFIG_PPC_MERGE) -#include +#include #else #include #endif -- cgit v1.2.3 From 75195dabce797f49b7d96d272e4e9330873e4340 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Fri, 23 May 2008 16:42:56 +1000 Subject: powerpc/mpc5200_wdt: use linux/of_platform.h instead of asm Signed-off-by: Stephen Rothwell Signed-off-by: Grant Likely --- drivers/watchdog/mpc5200_wdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/mpc5200_wdt.c b/drivers/watchdog/mpc5200_wdt.c index 80a91d4cea1..77c1c2ae2cc 100644 --- a/drivers/watchdog/mpc5200_wdt.c +++ b/drivers/watchdog/mpc5200_wdt.c @@ -4,7 +4,7 @@ #include #include #include -#include +#include #include #include -- cgit v1.2.3 From 7ba6d6dc8d58c49cff0533819195b44fb35d6ece Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Tue, 1 Jul 2008 21:38:16 -0600 Subject: powerpc/mpc5200: Add PSC helpers for bestcomm engine Simplify the interface for setting up bestcomm DMA to PSCs by adding some helper functions. The helper function sets the correct values for the initator and ipr values in PSC DMA tasks based on the PSC number. Signed-off-by: Grant Likely --- arch/powerpc/sysdev/bestcomm/gen_bd.c | 95 +++++++++++++++++++++++++++++++++++ arch/powerpc/sysdev/bestcomm/gen_bd.h | 5 ++ 2 files changed, 100 insertions(+) diff --git a/arch/powerpc/sysdev/bestcomm/gen_bd.c b/arch/powerpc/sysdev/bestcomm/gen_bd.c index 8d33eafbb3f..a3a134c35b0 100644 --- a/arch/powerpc/sysdev/bestcomm/gen_bd.c +++ b/arch/powerpc/sysdev/bestcomm/gen_bd.c @@ -20,6 +20,7 @@ #include #include +#include #include "bestcomm.h" #include "bestcomm_priv.h" @@ -253,6 +254,100 @@ bcom_gen_bd_tx_release(struct bcom_task *tsk) } EXPORT_SYMBOL_GPL(bcom_gen_bd_tx_release); +/* --------------------------------------------------------------------- + * PSC support code + */ + +/** + * bcom_psc_parameters - Bestcomm initialization value table for PSC devices + * + * This structure is only used internally. It is a lookup table for PSC + * specific parameters to bestcomm tasks. + */ +static struct bcom_psc_params { + int rx_initiator; + int rx_ipr; + int tx_initiator; + int tx_ipr; +} bcom_psc_params[] = { + [0] = { + .rx_initiator = BCOM_INITIATOR_PSC1_RX, + .rx_ipr = BCOM_IPR_PSC1_RX, + .tx_initiator = BCOM_INITIATOR_PSC1_TX, + .tx_ipr = BCOM_IPR_PSC1_TX, + }, + [1] = { + .rx_initiator = BCOM_INITIATOR_PSC2_RX, + .rx_ipr = BCOM_IPR_PSC2_RX, + .tx_initiator = BCOM_INITIATOR_PSC2_TX, + .tx_ipr = BCOM_IPR_PSC2_TX, + }, + [2] = { + .rx_initiator = BCOM_INITIATOR_PSC3_RX, + .rx_ipr = BCOM_IPR_PSC3_RX, + .tx_initiator = BCOM_INITIATOR_PSC3_TX, + .tx_ipr = BCOM_IPR_PSC3_TX, + }, + [3] = { + .rx_initiator = BCOM_INITIATOR_PSC4_RX, + .rx_ipr = BCOM_IPR_PSC4_RX, + .tx_initiator = BCOM_INITIATOR_PSC4_TX, + .tx_ipr = BCOM_IPR_PSC4_TX, + }, + [4] = { + .rx_initiator = BCOM_INITIATOR_PSC5_RX, + .rx_ipr = BCOM_IPR_PSC5_RX, + .tx_initiator = BCOM_INITIATOR_PSC5_TX, + .tx_ipr = BCOM_IPR_PSC5_TX, + }, + [5] = { + .rx_initiator = BCOM_INITIATOR_PSC6_RX, + .rx_ipr = BCOM_IPR_PSC6_RX, + .tx_initiator = BCOM_INITIATOR_PSC6_TX, + .tx_ipr = BCOM_IPR_PSC6_TX, + }, +}; + +/** + * bcom_psc_gen_bd_rx_init - Allocate a receive bcom_task for a PSC port + * @psc_num: Number of the PSC to allocate a task for + * @queue_len: number of buffer descriptors to allocate for the task + * @fifo: physical address of FIFO register + * @maxbufsize: Maximum receive data size in bytes. + * + * Allocate a bestcomm task structure for receiving data from a PSC. + */ +struct bcom_task * bcom_psc_gen_bd_rx_init(unsigned psc_num, int queue_len, + phys_addr_t fifo, int maxbufsize) +{ + if (psc_num >= MPC52xx_PSC_MAXNUM) + return NULL; + + return bcom_gen_bd_rx_init(queue_len, fifo, + bcom_psc_params[psc_num].rx_initiator, + bcom_psc_params[psc_num].rx_ipr, + maxbufsize); +} +EXPORT_SYMBOL_GPL(bcom_psc_gen_bd_rx_init); + +/** + * bcom_psc_gen_bd_tx_init - Allocate a transmit bcom_task for a PSC port + * @psc_num: Number of the PSC to allocate a task for + * @queue_len: number of buffer descriptors to allocate for the task + * @fifo: physical address of FIFO register + * + * Allocate a bestcomm task structure for transmitting data to a PSC. + */ +struct bcom_task * +bcom_psc_gen_bd_tx_init(unsigned psc_num, int queue_len, phys_addr_t fifo) +{ + struct psc; + return bcom_gen_bd_tx_init(queue_len, fifo, + bcom_psc_params[psc_num].tx_initiator, + bcom_psc_params[psc_num].tx_ipr); +} +EXPORT_SYMBOL_GPL(bcom_psc_gen_bd_tx_init); + MODULE_DESCRIPTION("BestComm General Buffer Descriptor tasks driver"); MODULE_AUTHOR("Jeff Gibbons "); diff --git a/arch/powerpc/sysdev/bestcomm/gen_bd.h b/arch/powerpc/sysdev/bestcomm/gen_bd.h index 5b6fa803c6a..de47260e69d 100644 --- a/arch/powerpc/sysdev/bestcomm/gen_bd.h +++ b/arch/powerpc/sysdev/bestcomm/gen_bd.h @@ -44,5 +44,10 @@ extern void bcom_gen_bd_tx_release(struct bcom_task *tsk); +/* PSC support utility wrappers */ +struct bcom_task * bcom_psc_gen_bd_rx_init(unsigned psc_num, int queue_len, + phys_addr_t fifo, int maxbufsize); +struct bcom_task * bcom_psc_gen_bd_tx_init(unsigned psc_num, int queue_len, + phys_addr_t fifo); #endif /* __BESTCOMM_GEN_BD_H__ */ -- cgit v1.2.3 From 08b6c06de5d3f37295f6dbf7010fb45ae5ee14a7 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Fri, 11 Jul 2008 16:17:58 -0600 Subject: powerpc/mpc5200: fix compile warnings in bestcomm driver Fix for the following compiler warnings: CC arch/powerpc/sysdev/bestcomm/bestcomm.o arch/powerpc/sysdev/bestcomm/bestcomm.c: In function 'mpc52xx_bcom_probe': arch/powerpc/sysdev/bestcomm/bestcomm.c:446: warning: format '%08lx' expects type 'long unsigned int', but argument 2 has type 'phys_addr_t' CC arch/powerpc/sysdev/bestcomm/sram.o arch/powerpc/sysdev/bestcomm/sram.c: In function 'bcom_sram_init': arch/powerpc/sysdev/bestcomm/sram.c:89: warning: format '%08lx' expects type 'long unsigned int', but argument 3 has type 'phys_addr_t' Signed-off-by: Grant Likely --- arch/powerpc/sysdev/bestcomm/bestcomm.c | 2 +- arch/powerpc/sysdev/bestcomm/sram.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/sysdev/bestcomm/bestcomm.c b/arch/powerpc/sysdev/bestcomm/bestcomm.c index 64ec7d62936..446c9ea85b3 100644 --- a/arch/powerpc/sysdev/bestcomm/bestcomm.c +++ b/arch/powerpc/sysdev/bestcomm/bestcomm.c @@ -443,7 +443,7 @@ mpc52xx_bcom_probe(struct of_device *op, const struct of_device_id *match) /* Done ! */ printk(KERN_INFO "DMA: MPC52xx BestComm engine @%08lx ok !\n", - bcom_eng->regs_base); + (long)bcom_eng->regs_base); return 0; diff --git a/arch/powerpc/sysdev/bestcomm/sram.c b/arch/powerpc/sysdev/bestcomm/sram.c index 99784383a84..5d74ef7a651 100644 --- a/arch/powerpc/sysdev/bestcomm/sram.c +++ b/arch/powerpc/sysdev/bestcomm/sram.c @@ -86,7 +86,7 @@ int bcom_sram_init(struct device_node *sram_node, char *owner) if (!bcom_sram->base_virt) { printk(KERN_ERR "%s: bcom_sram_init: " "Map error SRAM zone 0x%08lx (0x%0x)!\n", - owner, bcom_sram->base_phys, bcom_sram->size ); + owner, (long)bcom_sram->base_phys, bcom_sram->size ); rv = -ENOMEM; goto error_release; } -- cgit v1.2.3 From 4df64c3e58d28ffc5c61bdbdd733c5d0303b9f3c Mon Sep 17 00:00:00 2001 From: John Rigby Date: Wed, 9 Jul 2008 14:54:01 -0600 Subject: powerpc/mpc5121: Update device tree for MPC5121ADS evaluation board Current device tree is only bare bones. This patch adds nodes to make it a complete tree for the MPC5121ads. Added nodes include: mbx - opengl coprocessor nfc - nand flash controller cpld-pic - on board cpld rtc clock - clock control pmc - power management control gpio mscan - can module i2c axe - audio coprocessor display - display interface unit mdio ethernet usb ioctl - pin config pata ac97 - PSC configured as AC97 pscfifo - psc fifo configuration dma pci Fix typo in header changing MDS to ADS. Add a compatible property of the form "fsl,mpc5121-..." to nodes missing one. Changed localbus compatible to fsl,mpc5121-localbus, this does not break anything because the only code that uses it finds it via the node name, not compatible. Signed-off-by: John Rigby Signed-off-by: Grant Likely --- arch/powerpc/boot/dts/mpc5121ads.dts | 310 +++++++++++++++++++++++++++++++++-- 1 file changed, 299 insertions(+), 11 deletions(-) diff --git a/arch/powerpc/boot/dts/mpc5121ads.dts b/arch/powerpc/boot/dts/mpc5121ads.dts index 94ad7b2b241..1f9036c317b 100644 --- a/arch/powerpc/boot/dts/mpc5121ads.dts +++ b/arch/powerpc/boot/dts/mpc5121ads.dts @@ -1,7 +1,7 @@ /* - * MPC5121E MDS Device Tree Source + * MPC5121E ADS Device Tree Source * - * Copyright 2007 Freescale Semiconductor Inc. + * Copyright 2007,2008 Freescale Semiconductor Inc. * * 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 @@ -17,6 +17,10 @@ #address-cells = <1>; #size-cells = <1>; + aliases { + pci = &pci; + }; + cpus { #address-cells = <1>; #size-cells = <0>; @@ -39,8 +43,41 @@ reg = <0x00000000 0x10000000>; // 256MB at 0 }; + mbx@20000000 { + compatible = "fsl,mpc5121-mbx"; + reg = <0x20000000 0x4000>; + interrupts = <66 0x8>; + interrupt-parent = < &ipic >; + }; + + sram@30000000 { + compatible = "fsl,mpc5121-sram"; + reg = <0x30000000 0x20000>; // 128K at 0x30000000 + }; + + nfc@40000000 { + compatible = "fsl,mpc5121-nfc"; + reg = <0x40000000 0x100000>; // 1M at 0x40000000 + interrupts = <6 8>; + interrupt-parent = < &ipic >; + #address-cells = <1>; + #size-cells = <1>; + bank-width = <1>; + // ADS has two Hynix 512MB Nand flash chips in a single + // stacked package . + chips = <2>; + nand0@0 { + label = "nand0"; + reg = <0x00000000 0x02000000>; // first 32 MB of chip 0 + }; + nand1@20000000 { + label = "nand1"; + reg = <0x20000000 0x02000000>; // first 32 MB of chip 1 + }; + }; + localbus@80000020 { - compatible = "fsl,mpc5121ads-localbus"; + compatible = "fsl,mpc5121-localbus"; #address-cells = <2>; #size-cells = <1>; reg = <0x80000020 0x40>; @@ -51,14 +88,51 @@ flash@0,0 { compatible = "cfi-flash"; reg = <0 0x0 0x4000000>; + #address-cells = <1>; + #size-cells = <1>; bank-width = <4>; - device-width = <1>; + device-width = <2>; + protected@0 { + label = "protected"; + reg = <0x00000000 0x00040000>; // first sector is protected + read-only; + }; + filesystem@40000 { + label = "filesystem"; + reg = <0x00040000 0x03c00000>; // 60M for filesystem + }; + kernel@3c40000 { + label = "kernel"; + reg = <0x03c40000 0x00280000>; // 2.5M for kernel + }; + device-tree@3ec0000 { + label = "device-tree"; + reg = <0x03ec0000 0x00040000>; // one sector for device tree + }; + u-boot@3f00000 { + label = "u-boot"; + reg = <0x03f00000 0x00100000>; // 1M for u-boot + read-only; + }; }; board-control@2,0 { compatible = "fsl,mpc5121ads-cpld"; reg = <0x2 0x0 0x8000>; }; + + cpld_pic: pic@2,a { + compatible = "fsl,mpc5121ads-cpld-pic"; + interrupt-controller; + #interrupt-cells = <2>; + reg = <0x2 0xa 0x5>; + interrupt-parent = < &ipic >; + // irq routing + // all irqs but touch screen are routed to irq0 (ipic 48) + // touch screen is statically routed to irq1 (ipic 17) + // so don't use it here + interrupts = <48 0x8>; + }; }; soc@80000000 { @@ -85,38 +159,252 @@ reg = <0xc00 0x100>; }; - // 512x PSCs are not 52xx PSCs compatible + rtc@a00 { // Real time clock + compatible = "fsl,mpc5121-rtc"; + reg = <0xa00 0x100>; + interrupts = <79 0x8 80 0x8>; + interrupt-parent = < &ipic >; + }; + + clock@f00 { // Clock control + compatible = "fsl,mpc5121-clock"; + reg = <0xf00 0x100>; + }; + + pmc@1000{ //Power Management Controller + compatible = "fsl,mpc5121-pmc"; + reg = <0x1000 0x100>; + interrupts = <83 0x2>; + interrupt-parent = < &ipic >; + }; + + gpio@1100 { + compatible = "fsl,mpc5121-gpio"; + reg = <0x1100 0x100>; + interrupts = <78 0x8>; + interrupt-parent = < &ipic >; + }; + + mscan@1300 { + compatible = "fsl,mpc5121-mscan"; + cell-index = <0>; + interrupts = <12 0x8>; + interrupt-parent = < &ipic >; + reg = <0x1300 0x80>; + }; + + mscan@1380 { + compatible = "fsl,mpc5121-mscan"; + cell-index = <1>; + interrupts = <13 0x8>; + interrupt-parent = < &ipic >; + reg = <0x1380 0x80>; + }; + + i2c@1700 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,mpc5121-i2c", "fsl-i2c"; + cell-index = <0>; + reg = <0x1700 0x20>; + interrupts = <9 0x8>; + interrupt-parent = < &ipic >; + fsl5200-clocking; + }; + + i2c@1720 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,mpc5121-i2c", "fsl-i2c"; + cell-index = <1>; + reg = <0x1720 0x20>; + interrupts = <10 0x8>; + interrupt-parent = < &ipic >; + fsl5200-clocking; + }; + + i2c@1740 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,mpc5121-i2c", "fsl-i2c"; + cell-index = <2>; + reg = <0x1740 0x20>; + interrupts = <11 0x8>; + interrupt-parent = < &ipic >; + fsl5200-clocking; + }; + + i2ccontrol@1760 { + compatible = "fsl,mpc5121-i2c-ctrl"; + reg = <0x1760 0x8>; + }; + + axe@2000 { + compatible = "fsl,mpc5121-axe"; + reg = <0x2000 0x100>; + interrupts = <42 0x8>; + interrupt-parent = < &ipic >; + }; + + display@2100 { + compatible = "fsl,mpc5121-diu", "fsl-diu"; + reg = <0x2100 0x100>; + interrupts = <64 0x8>; + interrupt-parent = < &ipic >; + }; + + mdio@2800 { + compatible = "fsl,mpc5121-fec-mdio"; + reg = <0x2800 0x800>; + #address-cells = <1>; + #size-cells = <0>; + phy: ethernet-phy@0 { + reg = <1>; + device_type = "ethernet-phy"; + }; + }; + + ethernet@2800 { + device_type = "network"; + compatible = "fsl,mpc5121-fec"; + reg = <0x2800 0x800>; + local-mac-address = [ 00 00 00 00 00 00 ]; + interrupts = <4 0x8>; + interrupt-parent = < &ipic >; + phy-handle = < &phy >; + fsl,align-tx-packets = <4>; + }; + + // 5121e has two dr usb modules + // mpc5121_ads only uses USB0 + + // USB1 using external ULPI PHY + //usb@3000 { + // compatible = "fsl,mpc5121-usb2-dr", "fsl-usb2-dr"; + // reg = <0x3000 0x1000>; + // #address-cells = <1>; + // #size-cells = <0>; + // interrupt-parent = < &ipic >; + // interrupts = <43 0x8>; + // dr_mode = "otg"; + // phy_type = "ulpi"; + // port1; + //}; + + // USB0 using internal UTMI PHY + usb@4000 { + compatible = "fsl,mpc5121-usb2-dr", "fsl-usb2-dr"; + reg = <0x4000 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + interrupt-parent = < &ipic >; + interrupts = <44 0x8>; + dr_mode = "otg"; + phy_type = "utmi_wide"; + port0; + }; + + // IO control + ioctl@a000 { + compatible = "fsl,mpc5121-ioctl"; + reg = <0xA000 0x1000>; + }; + + pata@10200 { + compatible = "fsl,mpc5121-pata"; + reg = <0x10200 0x100>; + interrupts = <5 0x8>; + interrupt-parent = < &ipic >; + }; + + // 512x PSCs are not 52xx PSC compatible // PSC3 serial port A aka ttyPSC0 serial@11300 { device_type = "serial"; - compatible = "fsl,mpc5121-psc-uart"; + compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc"; // Logical port assignment needed until driver // learns to use aliases port-number = <0>; cell-index = <3>; reg = <0x11300 0x100>; - interrupts = <0x28 0x8>; // actually the fifo irq + interrupts = <40 0x8>; interrupt-parent = < &ipic >; + rx-fifo-size = <16>; + tx-fifo-size = <16>; }; // PSC4 serial port B aka ttyPSC1 serial@11400 { device_type = "serial"; - compatible = "fsl,mpc5121-psc-uart"; + compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc"; // Logical port assignment needed until driver // learns to use aliases port-number = <1>; cell-index = <4>; reg = <0x11400 0x100>; - interrupts = <0x28 0x8>; // actually the fifo irq + interrupts = <40 0x8>; interrupt-parent = < &ipic >; + rx-fifo-size = <16>; + tx-fifo-size = <16>; }; - pscsfifo@11f00 { + // PSC5 in ac97 mode + ac97@11500 { + compatible = "fsl,mpc5121-psc-ac97", "fsl,mpc5121-psc"; + cell-index = <5>; + reg = <0x11500 0x100>; + interrupts = <40 0x8>; + interrupt-parent = < &ipic >; + fsl,mode = "ac97-slave"; + rx-fifo-size = <384>; + tx-fifo-size = <384>; + }; + + pscfifo@11f00 { compatible = "fsl,mpc5121-psc-fifo"; reg = <0x11f00 0x100>; - interrupts = <0x28 0x8>; + interrupts = <40 0x8>; interrupt-parent = < &ipic >; }; + + dma@14000 { + compatible = "fsl,mpc5121-dma2"; + reg = <0x14000 0x1800>; + interrupts = <65 0x8>; + interrupt-parent = < &ipic >; + }; + + }; + + pci: pci@80008500 { + interrupt-map-mask = <0xf800 0x0 0x0 0x7>; + interrupt-map = < + // IDSEL 0x15 - Slot 1 PCI + 0xa800 0x0 0x0 0x1 &cpld_pic 0x0 0x8 + 0xa800 0x0 0x0 0x2 &cpld_pic 0x1 0x8 + 0xa800 0x0 0x0 0x3 &cpld_pic 0x2 0x8 + 0xa800 0x0 0x0 0x4 &cpld_pic 0x3 0x8 + + // IDSEL 0x16 - Slot 2 MiniPCI + 0xb000 0x0 0x0 0x1 &cpld_pic 0x4 0x8 + 0xb000 0x0 0x0 0x2 &cpld_pic 0x5 0x8 + + // IDSEL 0x17 - Slot 3 MiniPCI + 0xb800 0x0 0x0 0x1 &cpld_pic 0x6 0x8 + 0xb800 0x0 0x0 0x2 &cpld_pic 0x7 0x8 + >; + interrupt-parent = < &ipic >; + interrupts = <1 0x8>; + bus-range = <0 0>; + ranges = <0x42000000 0x0 0xa0000000 0xa0000000 0x0 0x10000000 + 0x02000000 0x0 0xb0000000 0xb0000000 0x0 0x10000000 + 0x01000000 0x0 0x00000000 0x84000000 0x0 0x01000000>; + clock-frequency = <0>; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + reg = <0x80008500 0x100>; + compatible = "fsl,mpc5121-pci"; + device_type = "pci"; }; }; -- cgit v1.2.3 From 137e95906e294913fab02162e8a1948ade49acb5 Mon Sep 17 00:00:00 2001 From: John Rigby Date: Wed, 9 Jul 2008 14:54:02 -0600 Subject: powerpc/mpc5121: Add clock driver Plugs into the generic powerpc clock driver in arch/powerpc/kernel/clock.c The following subset of clk_interface is implemented: clk_get, clk_put: get clock via name, release clock clk_enable, clk_disable: enable or disable clock clk_get_rate: get clock rate in Hz clk_set_rate: stubbed clk_round_rate: stubbed clk_set_parent: NULL clk_get_parent: NULL Signed-off-by: John Rigby Signed-off-by: Grant Likely --- Makefile | 1 + arch/powerpc/platforms/512x/Kconfig | 1 + arch/powerpc/platforms/512x/Makefile | 1 + arch/powerpc/platforms/512x/clock.c | 729 +++++++++++++++++++++++++++++++++++ 4 files changed, 732 insertions(+) create mode 100644 arch/powerpc/platforms/512x/clock.c diff --git a/Makefile b/Makefile index 6aff5f47c21..fc3ae9fc847 100644 --- a/Makefile +++ b/Makefile @@ -1,3 +1,4 @@ +FRED=42 VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 26 diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig index 4c0da0c079e..162af067d12 100644 --- a/arch/powerpc/platforms/512x/Kconfig +++ b/arch/powerpc/platforms/512x/Kconfig @@ -2,6 +2,7 @@ config PPC_MPC512x bool select FSL_SOC select IPIC + select PPC_CLOCK default n config PPC_MPC5121 diff --git a/arch/powerpc/platforms/512x/Makefile b/arch/powerpc/platforms/512x/Makefile index 232c89f2039..90910c1f725 100644 --- a/arch/powerpc/platforms/512x/Makefile +++ b/arch/powerpc/platforms/512x/Makefile @@ -1,4 +1,5 @@ # # Makefile for the Freescale PowerPC 512x linux kernel. # +obj-y += clock.o obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o diff --git a/arch/powerpc/platforms/512x/clock.c b/arch/powerpc/platforms/512x/clock.c new file mode 100644 index 00000000000..f416014ee72 --- /dev/null +++ b/arch/powerpc/platforms/512x/clock.c @@ -0,0 +1,729 @@ +/* + * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: John Rigby + * + * Implements the clk api defined in include/linux/clk.h + * + * Original based on linux/arch/arm/mach-integrator/clock.c + * + * Copyright (C) 2004 ARM Limited. + * Written by Deep Blue Solutions Limited. + * + * 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. + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#undef CLK_DEBUG + +static int clocks_initialized; + +#define CLK_HAS_RATE 0x1 /* has rate in MHz */ +#define CLK_HAS_CTRL 0x2 /* has control reg and bit */ + +struct clk { + struct list_head node; + char name[32]; + int flags; + struct device *dev; + unsigned long rate; + struct module *owner; + void (*calc) (struct clk *); + struct clk *parent; + int reg, bit; /* CLK_HAS_CTRL */ + int div_shift; /* only used by generic_div_clk_calc */ +}; + +static LIST_HEAD(clocks); +static DEFINE_MUTEX(clocks_mutex); + +static struct clk *mpc5121_clk_get(struct device *dev, const char *id) +{ + struct clk *p, *clk = ERR_PTR(-ENOENT); + int dev_match = 0; + int id_match = 0; + + if (dev == NULL && id == NULL) + return NULL; + + mutex_lock(&clocks_mutex); + list_for_each_entry(p, &clocks, node) { + if (dev && dev == p->dev) + dev_match++; + if (strcmp(id, p->name) == 0) + id_match++; + if ((dev_match || id_match) && try_module_get(p->owner)) { + clk = p; + break; + } + } + mutex_unlock(&clocks_mutex); + + return clk; +} + +#ifdef CLK_DEBUG +static void dump_clocks(void) +{ + struct clk *p; + + mutex_lock(&clocks_mutex); + printk(KERN_INFO "CLOCKS:\n"); + list_for_each_entry(p, &clocks, node) { + printk(KERN_INFO " %s %ld", p->name, p->rate); + if (p->parent) + printk(KERN_INFO " %s %ld", p->parent->name, + p->parent->rate); + if (p->flags & CLK_HAS_CTRL) + printk(KERN_INFO " reg/bit %d/%d", p->reg, p->bit); + printk("\n"); + } + mutex_unlock(&clocks_mutex); +} +#define DEBUG_CLK_DUMP() dump_clocks() +#else +#define DEBUG_CLK_DUMP() +#endif + + +static void mpc5121_clk_put(struct clk *clk) +{ + module_put(clk->owner); +} + +#define NRPSC 12 + +struct mpc512x_clockctl { + u32 spmr; /* System PLL Mode Reg */ + u32 sccr[2]; /* System Clk Ctrl Reg 1 & 2 */ + u32 scfr1; /* System Clk Freq Reg 1 */ + u32 scfr2; /* System Clk Freq Reg 2 */ + u32 reserved; + u32 bcr; /* Bread Crumb Reg */ + u32 pccr[NRPSC]; /* PSC Clk Ctrl Reg 0-11 */ + u32 spccr; /* SPDIF Clk Ctrl Reg */ + u32 cccr; /* CFM Clk Ctrl Reg */ + u32 dccr; /* DIU Clk Cnfg Reg */ +}; + +struct mpc512x_clockctl __iomem *clockctl; + +static int mpc5121_clk_enable(struct clk *clk) +{ + unsigned int mask; + + if (clk->flags & CLK_HAS_CTRL) { + mask = in_be32(&clockctl->sccr[clk->reg]); + mask |= 1 << clk->bit; + out_be32(&clockctl->sccr[clk->reg], mask); + } + return 0; +} + +static void mpc5121_clk_disable(struct clk *clk) +{ + unsigned int mask; + + if (clk->flags & CLK_HAS_CTRL) { + mask = in_be32(&clockctl->sccr[clk->reg]); + mask &= ~(1 << clk->bit); + out_be32(&clockctl->sccr[clk->reg], mask); + } +} + +static unsigned long mpc5121_clk_get_rate(struct clk *clk) +{ + if (clk->flags & CLK_HAS_RATE) + return clk->rate; + else + return 0; +} + +static long mpc5121_clk_round_rate(struct clk *clk, unsigned long rate) +{ + return rate; +} + +static int mpc5121_clk_set_rate(struct clk *clk, unsigned long rate) +{ + return 0; +} + +static int clk_register(struct clk *clk) +{ + mutex_lock(&clocks_mutex); + list_add(&clk->node, &clocks); + mutex_unlock(&clocks_mutex); + return 0; +} + +static unsigned long spmf_mult(void) +{ + /* + * Convert spmf to multiplier + */ + static int spmf_to_mult[] = { + 68, 1, 12, 16, + 20, 24, 28, 32, + 36, 40, 44, 48, + 52, 56, 60, 64 + }; + int spmf = (clockctl->spmr >> 24) & 0xf; + return spmf_to_mult[spmf]; +} + +static unsigned long sysdiv_div_x_2(void) +{ + /* + * Convert sysdiv to divisor x 2 + * Some divisors have fractional parts so + * multiply by 2 then divide by this value + */ + static int sysdiv_to_div_x_2[] = { + 4, 5, 6, 7, + 8, 9, 10, 14, + 12, 16, 18, 22, + 20, 24, 26, 30, + 28, 32, 34, 38, + 36, 40, 42, 46, + 44, 48, 50, 54, + 52, 56, 58, 62, + 60, 64, 66, + }; + int sysdiv = (clockctl->scfr2 >> 26) & 0x3f; + return sysdiv_to_div_x_2[sysdiv]; +} + +static unsigned long ref_to_sys(unsigned long rate) +{ + rate *= spmf_mult(); + rate *= 2; + rate /= sysdiv_div_x_2(); + + return rate; +} + +static unsigned long sys_to_ref(unsigned long rate) +{ + rate *= sysdiv_div_x_2(); + rate /= 2; + rate /= spmf_mult(); + + return rate; +} + +static long ips_to_ref(unsigned long rate) +{ + int ips_div = (clockctl->scfr1 >> 23) & 0x7; + + rate *= ips_div; /* csb_clk = ips_clk * ips_div */ + rate *= 2; /* sys_clk = csb_clk * 2 */ + return sys_to_ref(rate); +} + +static unsigned long devtree_getfreq(char *clockname) +{ + struct device_node *np; + const unsigned int *prop; + unsigned int val = 0; + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-immr"); + if (np) { + prop = of_get_property(np, clockname, NULL); + if (prop) + val = *prop; + of_node_put(np); + } + return val; +} + +static void ref_clk_calc(struct clk *clk) +{ + unsigned long rate; + + rate = devtree_getfreq("bus-frequency"); + if (rate == 0) { + printk(KERN_ERR "No bus-frequency in dev tree\n"); + clk->rate = 0; + return; + } + clk->rate = ips_to_ref(rate); +} + +static struct clk ref_clk = { + .name = "ref_clk", + .calc = ref_clk_calc, +}; + + +static void sys_clk_calc(struct clk *clk) +{ + clk->rate = ref_to_sys(ref_clk.rate); +} + +static struct clk sys_clk = { + .name = "sys_clk", + .calc = sys_clk_calc, +}; + +static void diu_clk_calc(struct clk *clk) +{ + int diudiv_x_2 = clockctl->scfr1 & 0xff; + unsigned long rate; + + rate = sys_clk.rate; + + rate *= 2; + rate /= diudiv_x_2; + + clk->rate = rate; +} + +static void half_clk_calc(struct clk *clk) +{ + clk->rate = clk->parent->rate / 2; +} + +static void generic_div_clk_calc(struct clk *clk) +{ + int div = (clockctl->scfr1 >> clk->div_shift) & 0x7; + + clk->rate = clk->parent->rate / div; +} + +static void unity_clk_calc(struct clk *clk) +{ + clk->rate = clk->parent->rate; +} + +static struct clk csb_clk = { + .name = "csb_clk", + .calc = half_clk_calc, + .parent = &sys_clk, +}; + +static void e300_clk_calc(struct clk *clk) +{ + int spmf = (clockctl->spmr >> 16) & 0xf; + int ratex2 = clk->parent->rate * spmf; + + clk->rate = ratex2 / 2; +} + +static struct clk e300_clk = { + .name = "e300_clk", + .calc = e300_clk_calc, + .parent = &csb_clk, +}; + +static struct clk ips_clk = { + .name = "ips_clk", + .calc = generic_div_clk_calc, + .parent = &csb_clk, + .div_shift = 23, +}; + +/* + * Clocks controlled by SCCR1 (.reg = 0) + */ +static struct clk lpc_clk = { + .name = "lpc_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 30, + .calc = generic_div_clk_calc, + .parent = &ips_clk, + .div_shift = 11, +}; + +static struct clk nfc_clk = { + .name = "nfc_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 29, + .calc = generic_div_clk_calc, + .parent = &ips_clk, + .div_shift = 8, +}; + +static struct clk pata_clk = { + .name = "pata_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 28, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +/* + * PSC clocks (bits 27 - 16) + * are setup elsewhere + */ + +static struct clk sata_clk = { + .name = "sata_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 14, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk fec_clk = { + .name = "fec_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 13, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk pci_clk = { + .name = "pci_clk", + .flags = CLK_HAS_CTRL, + .reg = 0, + .bit = 11, + .calc = generic_div_clk_calc, + .parent = &csb_clk, + .div_shift = 20, +}; + +/* + * Clocks controlled by SCCR2 (.reg = 1) + */ +static struct clk diu_clk = { + .name = "diu_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 31, + .calc = diu_clk_calc, +}; + +static struct clk axe_clk = { + .name = "axe_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 30, + .calc = unity_clk_calc, + .parent = &csb_clk, +}; + +static struct clk usb1_clk = { + .name = "usb1_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 28, + .calc = unity_clk_calc, + .parent = &csb_clk, +}; + +static struct clk usb2_clk = { + .name = "usb2_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 27, + .calc = unity_clk_calc, + .parent = &csb_clk, +}; + +static struct clk i2c_clk = { + .name = "i2c_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 26, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk mscan_clk = { + .name = "mscan_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 25, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk sdhc_clk = { + .name = "sdhc_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 24, + .calc = unity_clk_calc, + .parent = &ips_clk, +}; + +static struct clk mbx_bus_clk = { + .name = "mbx_bus_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 22, + .calc = half_clk_calc, + .parent = &csb_clk, +}; + +static struct clk mbx_clk = { + .name = "mbx_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 21, + .calc = unity_clk_calc, + .parent = &csb_clk, +}; + +static struct clk mbx_3d_clk = { + .name = "mbx_3d_clk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 20, + .calc = generic_div_clk_calc, + .parent = &mbx_bus_clk, + .div_shift = 14, +}; + +static void psc_mclk_in_calc(struct clk *clk) +{ + clk->rate = devtree_getfreq("psc_mclk_in"); + if (!clk->rate) + clk->rate = 25000000; +} + +static struct clk psc_mclk_in = { + .name = "psc_mclk_in", + .calc = psc_mclk_in_calc, +}; + +static struct clk spdif_txclk = { + .name = "spdif_txclk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 23, +}; + +static struct clk spdif_rxclk = { + .name = "spdif_rxclk", + .flags = CLK_HAS_CTRL, + .reg = 1, + .bit = 23, +}; + +static void ac97_clk_calc(struct clk *clk) +{ + /* ac97 bit clock is always 24.567 MHz */ + clk->rate = 24567000; +} + +static struct clk ac97_clk = { + .name = "ac97_clk_in", + .calc = ac97_clk_calc, +}; + +struct clk *rate_clks[] = { + &ref_clk, + &sys_clk, + &diu_clk, + &csb_clk, + &e300_clk, + &ips_clk, + &fec_clk, + &sata_clk, + &pata_clk, + &nfc_clk, + &lpc_clk, + &mbx_bus_clk, + &mbx_clk, + &mbx_3d_clk, + &axe_clk, + &usb1_clk, + &usb2_clk, + &i2c_clk, + &mscan_clk, + &sdhc_clk, + &pci_clk, + &psc_mclk_in, + &spdif_txclk, + &spdif_rxclk, + &ac97_clk, + NULL +}; + +static void rate_clk_init(struct clk *clk) +{ + if (clk->calc) { + clk->calc(clk); + clk->flags |= CLK_HAS_RATE; + clk_register(clk); + } else { + printk(KERN_WARNING + "Could not initialize clk %s without a calc routine\n", + clk->name); + } +} + +static void rate_clks_init(void) +{ + struct clk **cpp, *clk; + + cpp = rate_clks; + while ((clk = *cpp++)) + rate_clk_init(clk); +} + +/* + * There are two clk enable registers with 32 enable bits each + * psc clocks and device clocks are all stored in dev_clks + */ +struct clk dev_clks[2][32]; + +/* + * Given a psc number return the dev_clk + * associated with it + */ +static struct clk *psc_dev_clk(int pscnum) +{ + int reg, bit; + struct clk *clk; + + reg = 0; + bit = 27 - pscnum; + + clk = &dev_clks[reg][bit]; + clk->reg = 0; + clk->bit = bit; + return clk; +} + +/* + * PSC clock rate calculation + */ +static void psc_calc_rate(struct clk *clk, int pscnum, struct device_node *np) +{ + unsigned long mclk_src = sys_clk.rate; + unsigned long mclk_div; + + /* + * Can only change value of mclk divider + * when the divider is disabled. + * + * Zero is not a valid divider so minimum + * divider is 1 + * + * disable/set divider/enable + */ + out_be32(&clockctl->pccr[pscnum], 0); + out_be32(&clockctl->pccr[pscnum], 0x00020000); + out_be32(&clockctl->pccr[pscnum], 0x00030000); + + if (clockctl->pccr[pscnum] & 0x80) { + clk->rate = spdif_rxclk.rate; + return; + } + + switch ((clockctl->pccr[pscnum] >> 14) & 0x3) { + case 0: + mclk_src = sys_clk.rate; + break; + case 1: + mclk_src = ref_clk.rate; + break; + case 2: + mclk_src = psc_mclk_in.rate; + break; + case 3: + mclk_src = spdif_txclk.rate; + break; + } + + mclk_div = ((clockctl->pccr[pscnum] >> 17) & 0x7fff) + 1; + clk->rate = mclk_src / mclk_div; +} + +/* + * Find all psc nodes in device tree and assign a clock + * with name "psc%d_mclk" and dev pointing at the device + * returned from of_find_device_by_node + */ +static void psc_clks_init(void) +{ + struct device_node *np; + const u32 *cell_index; + struct of_device *ofdev; + + for_each_compatible_node(np, NULL, "fsl,mpc5121-psc") { + cell_index = of_get_property(np, "cell-index", NULL); + if (cell_index) { + int pscnum = *cell_index; + struct clk *clk = psc_dev_clk(pscnum); + + clk->flags = CLK_HAS_RATE | CLK_HAS_CTRL; + ofdev = of_find_device_by_node(np); + clk->dev = &ofdev->dev; + /* + * AC97 is special rate clock does + * not go through normal path + */ + if (strcmp("ac97", np->name) == 0) + clk->rate = ac97_clk.rate; + else + psc_calc_rate(clk, pscnum, np); + sprintf(clk->name, "psc%d_mclk", pscnum); + clk_register(clk); + clk_enable(clk); + } + } +} + +static struct clk_interface mpc5121_clk_functions = { + .clk_get = mpc5121_clk_get, + .clk_enable = mpc5121_clk_enable, + .clk_disable = mpc5121_clk_disable, + .clk_get_rate = mpc5121_clk_get_rate, + .clk_put = mpc5121_clk_put, + .clk_round_rate = mpc5121_clk_round_rate, + .clk_set_rate = mpc5121_clk_set_rate, + .clk_set_parent = NULL, + .clk_get_parent = NULL, +}; + +static int +mpc5121_clk_init(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-clock"); + if (np) { + clockctl = of_iomap(np, 0); + of_node_put(np); + } + + if (!clockctl) { + printk(KERN_ERR "Could not map clock control registers\n"); + return 0; + } + + rate_clks_init(); + psc_clks_init(); + + /* leave clockctl mapped forever */ + /*iounmap(clockctl); */ + DEBUG_CLK_DUMP(); + clocks_initialized++; + clk_functions = mpc5121_clk_functions; + return 0; +} + + +arch_initcall(mpc5121_clk_init); -- cgit v1.2.3 From fb1803224ea145e3424d6295d4aaa8e9fef70642 Mon Sep 17 00:00:00 2001 From: John Rigby Date: Wed, 9 Jul 2008 14:54:03 -0600 Subject: powerpc/mpc5121: Add generic board support for MPC5121 platforms Move shared code from mpc5121_ads.c to new file mpc512x_shared.c - mpc512x_find_ips_freq -> unchanged - contents of mpc5121_ads_init_IRQ -> mpc512x_init_IRQ - looking for fsl,mpc5121-ipic instead of fsl,ipic - mpc5121_ads_declare_of_platform_devices -> mpc5121_declare_of_platform_devices - and use compatible for lookup instead of node name Add new generic board setup mpc5121_generic.c Signed-off-by: John Rigby Signed-off-by: Grant Likely --- arch/powerpc/platforms/512x/Kconfig | 15 ++++- arch/powerpc/platforms/512x/Makefile | 3 +- arch/powerpc/platforms/512x/mpc5121_ads.c | 64 ++------------------- arch/powerpc/platforms/512x/mpc5121_generic.c | 58 +++++++++++++++++++ arch/powerpc/platforms/512x/mpc512x.h | 17 ++++++ arch/powerpc/platforms/512x/mpc512x_shared.c | 83 +++++++++++++++++++++++++++ 6 files changed, 177 insertions(+), 63 deletions(-) create mode 100644 arch/powerpc/platforms/512x/mpc5121_generic.c create mode 100644 arch/powerpc/platforms/512x/mpc512x.h create mode 100644 arch/powerpc/platforms/512x/mpc512x_shared.c diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig index 162af067d12..5d72dc3435a 100644 --- a/arch/powerpc/platforms/512x/Kconfig +++ b/arch/powerpc/platforms/512x/Kconfig @@ -3,12 +3,10 @@ config PPC_MPC512x select FSL_SOC select IPIC select PPC_CLOCK - default n config PPC_MPC5121 bool select PPC_MPC512x - default n config MPC5121_ADS bool "Freescale MPC5121E ADS" @@ -17,4 +15,15 @@ config MPC5121_ADS select PPC_MPC5121 help This option enables support for the MPC5121E ADS board. - default n + +config MPC5121_GENERIC + bool "Generic support for simple MPC5121 based boards" + depends on PPC_MULTIPLATFORM && PPC32 + select DEFAULT_UIMAGE + select PPC_MPC5121 + help + This option enables support for simple MPC5121 based boards + which do not need custom platform specific setup. + + Compatible boards include: Protonic LVT base boards (ZANMCU + and VICVT2). diff --git a/arch/powerpc/platforms/512x/Makefile b/arch/powerpc/platforms/512x/Makefile index 90910c1f725..8090e222a2d 100644 --- a/arch/powerpc/platforms/512x/Makefile +++ b/arch/powerpc/platforms/512x/Makefile @@ -1,5 +1,6 @@ # # Makefile for the Freescale PowerPC 512x linux kernel. # -obj-y += clock.o +obj-y += clock.o mpc512x_shared.o obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o +obj-$(CONFIG_MPC5121_GENERIC) += mpc5121_generic.o diff --git a/arch/powerpc/platforms/512x/mpc5121_ads.c b/arch/powerpc/platforms/512x/mpc5121_ads.c index 50bd3a31902..3ec9ca34d8e 100644 --- a/arch/powerpc/platforms/512x/mpc5121_ads.c +++ b/arch/powerpc/platforms/512x/mpc5121_ads.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. + * Copyright (C) 2007, 2008 Freescale Semiconductor, Inc. All rights reserved. * * Author: John Rigby, , Thur Mar 29 2007 * @@ -15,7 +15,6 @@ #include #include -#include #include #include @@ -23,65 +22,11 @@ #include #include -/** - * mpc512x_find_ips_freq - Find the IPS bus frequency for a device - * @node: device node - * - * Returns IPS bus frequency, or 0 if the bus frequency cannot be found. - */ -unsigned long -mpc512x_find_ips_freq(struct device_node *node) -{ - struct device_node *np; - const unsigned int *p_ips_freq = NULL; - - of_node_get(node); - while (node) { - p_ips_freq = of_get_property(node, "bus-frequency", NULL); - if (p_ips_freq) - break; - - np = of_get_parent(node); - of_node_put(node); - node = np; - } - if (node) - of_node_put(node); - - return p_ips_freq ? *p_ips_freq : 0; -} -EXPORT_SYMBOL(mpc512x_find_ips_freq); - -static struct of_device_id __initdata of_bus_ids[] = { - { .name = "soc", }, - { .name = "localbus", }, - {}, -}; - -static void __init mpc5121_ads_declare_of_platform_devices(void) -{ - /* Find every child of the SOC node and add it to of_platform */ - if (of_platform_bus_probe(NULL, of_bus_ids, NULL)) - printk(KERN_ERR __FILE__ ": " - "Error while probing of_platform bus\n"); -} +#include "mpc512x.h" static void __init mpc5121_ads_init_IRQ(void) { - struct device_node *np; - - np = of_find_compatible_node(NULL, NULL, "fsl,ipic"); - if (!np) - return; - - ipic_init(np, 0); - of_node_put(np); - - /* - * Initialize the default interrupt mapping priorities, - * in case the boot rom changed something on us. - */ - ipic_set_default_priority(); + mpc512x_init_IRQ(); } /* @@ -97,7 +42,8 @@ static int __init mpc5121_ads_probe(void) define_machine(mpc5121_ads) { .name = "MPC5121 ADS", .probe = mpc5121_ads_probe, - .init = mpc5121_ads_declare_of_platform_devices, + .setup_arch = mpc5121_ads_setup_arch, + .init = mpc512x_declare_of_platform_devices, .init_IRQ = mpc5121_ads_init_IRQ, .get_irq = ipic_get_irq, .calibrate_decr = generic_calibrate_decr, diff --git a/arch/powerpc/platforms/512x/mpc5121_generic.c b/arch/powerpc/platforms/512x/mpc5121_generic.c new file mode 100644 index 00000000000..2479de9e2d1 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc5121_generic.c @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: John Rigby, + * + * Description: + * MPC5121 SoC setup + * + * This 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. + * + */ + +#include +#include + +#include +#include +#include +#include + +#include "mpc512x.h" + +/* + * list of supported boards + */ +static char *board[] __initdata = { + "prt,prtlvt", + NULL +}; + +/* + * Called very early, MMU is off, device-tree isn't unflattened + */ +static int __init mpc5121_generic_probe(void) +{ + unsigned long node = of_get_flat_dt_root(); + int i = 0; + + while (board[i]) { + if (of_flat_dt_is_compatible(node, board[i])) + break; + i++; + } + + return board[i] != NULL; +} + +define_machine(mpc5121_generic) { + .name = "MPC5121 generic", + .probe = mpc5121_generic_probe, + .init = mpc512x_declare_of_platform_devices, + .init_IRQ = mpc512x_init_IRQ, + .get_irq = ipic_get_irq, + .calibrate_decr = generic_calibrate_decr, +}; diff --git a/arch/powerpc/platforms/512x/mpc512x.h b/arch/powerpc/platforms/512x/mpc512x.h new file mode 100644 index 00000000000..9c03693cb00 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc512x.h @@ -0,0 +1,17 @@ +/* + * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. + * + * 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. + * + * Prototypes for MPC512x shared code + */ + +#ifndef __MPC512X_H__ +#define __MPC512X_H__ +extern unsigned long mpc512x_find_ips_freq(struct device_node *node); +extern void __init mpc512x_init_IRQ(void); +void __init mpc512x_declare_of_platform_devices(void); +#endif /* __MPC512X_H__ */ diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c new file mode 100644 index 00000000000..d8cd579f319 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc512x_shared.c @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: John Rigby + * + * Description: + * MPC512x Shared code + * + * This 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. + */ + +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "mpc512x.h" + +unsigned long +mpc512x_find_ips_freq(struct device_node *node) +{ + struct device_node *np; + const unsigned int *p_ips_freq = NULL; + + of_node_get(node); + while (node) { + p_ips_freq = of_get_property(node, "bus-frequency", NULL); + if (p_ips_freq) + break; + + np = of_get_parent(node); + of_node_put(node); + node = np; + } + if (node) + of_node_put(node); + + return p_ips_freq ? *p_ips_freq : 0; +} +EXPORT_SYMBOL(mpc512x_find_ips_freq); + +void __init mpc512x_init_IRQ(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-ipic"); + if (!np) + return; + + ipic_init(np, 0); + of_node_put(np); + + /* + * Initialize the default interrupt mapping priorities, + * in case the boot rom changed something on us. + */ + ipic_set_default_priority(); +} + +/* + * Nodes to do bus probe on, soc and localbus + */ +static struct of_device_id __initdata of_bus_ids[] = { + { .compatible = "fsl,mpc5121-immr", }, + { .compatible = "fsl,mpc5121-localbus", }, + {}, +}; + +void __init mpc512x_declare_of_platform_devices(void) +{ + if (of_platform_bus_probe(NULL, of_bus_ids, NULL)) + printk(KERN_ERR __FILE__ ": " + "Error while probing of_platform bus\n"); +} + -- cgit v1.2.3 From 1879f711d8c3960e0fd927f38ff885017a77291b Mon Sep 17 00:00:00 2001 From: John Rigby Date: Wed, 9 Jul 2008 14:54:04 -0600 Subject: powerpc/mpc5121: Add support for CPLD on MPC5121ADS board Add a interrupt host for the interrupt controller in the mpc5121ads cpld. PCI interrupts are 0-7 the rest are 8-15 Touchscreen pendown irq is hardwired to irq1 All other irqs are chained to irq0 Signed-off-by: John Rigby Signed-off-by: Grant Likely --- arch/powerpc/platforms/512x/Kconfig | 1 + arch/powerpc/platforms/512x/Makefile | 2 +- arch/powerpc/platforms/512x/mpc5121_ads.c | 11 ++ arch/powerpc/platforms/512x/mpc5121_ads.h | 16 ++ arch/powerpc/platforms/512x/mpc5121_ads_cpld.c | 204 +++++++++++++++++++++++++ 5 files changed, 233 insertions(+), 1 deletion(-) create mode 100644 arch/powerpc/platforms/512x/mpc5121_ads.h create mode 100644 arch/powerpc/platforms/512x/mpc5121_ads_cpld.c diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig index 5d72dc3435a..c62f893ede1 100644 --- a/arch/powerpc/platforms/512x/Kconfig +++ b/arch/powerpc/platforms/512x/Kconfig @@ -13,6 +13,7 @@ config MPC5121_ADS depends on PPC_MULTIPLATFORM && PPC32 select DEFAULT_UIMAGE select PPC_MPC5121 + select MPC5121_ADS_CPLD help This option enables support for the MPC5121E ADS board. diff --git a/arch/powerpc/platforms/512x/Makefile b/arch/powerpc/platforms/512x/Makefile index 8090e222a2d..90be2f5717e 100644 --- a/arch/powerpc/platforms/512x/Makefile +++ b/arch/powerpc/platforms/512x/Makefile @@ -2,5 +2,5 @@ # Makefile for the Freescale PowerPC 512x linux kernel. # obj-y += clock.o mpc512x_shared.o -obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o +obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o mpc5121_ads_cpld.o obj-$(CONFIG_MPC5121_GENERIC) += mpc5121_generic.o diff --git a/arch/powerpc/platforms/512x/mpc5121_ads.c b/arch/powerpc/platforms/512x/mpc5121_ads.c index 3ec9ca34d8e..5ebf6939a69 100644 --- a/arch/powerpc/platforms/512x/mpc5121_ads.c +++ b/arch/powerpc/platforms/512x/mpc5121_ads.c @@ -23,10 +23,21 @@ #include #include "mpc512x.h" +#include "mpc5121_ads.h" + +static void __init mpc5121_ads_setup_arch(void) +{ + printk(KERN_INFO "MPC5121 ADS board from Freescale Semiconductor\n"); + /* + * cpld regs are needed early + */ + mpc5121_ads_cpld_map(); +} static void __init mpc5121_ads_init_IRQ(void) { mpc512x_init_IRQ(); + mpc5121_ads_cpld_pic_init(); } /* diff --git a/arch/powerpc/platforms/512x/mpc5121_ads.h b/arch/powerpc/platforms/512x/mpc5121_ads.h new file mode 100644 index 00000000000..662076cfee2 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc5121_ads.h @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2008 Freescale Semiconductor, Inc. All rights reserved. + * + * 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. + * + * Prototypes for ADS5121 specific code + */ + +#ifndef __MPC512ADS_H__ +#define __MPC512ADS_H__ +extern void __init mpc5121_ads_cpld_map(void); +extern void __init mpc5121_ads_cpld_pic_init(void); +#endif /* __MPC512ADS_H__ */ diff --git a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c new file mode 100644 index 00000000000..a6ce8056662 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c @@ -0,0 +1,204 @@ +/* + * Copyright (C) 2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: John Rigby, + * + * Description: + * MPC5121ADS CPLD irq handling + * + * This 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. + */ + +#undef DEBUG + +#include +#include +#include +#include +#include + +static struct device_node *cpld_pic_node; +static struct irq_host *cpld_pic_host; + +/* + * Bits to ignore in the misc_status register + * 0x10 touch screen pendown is hard routed to irq1 + * 0x02 pci status is read from pci status register + */ +#define MISC_IGNORE 0x12 + +/* + * Nothing to ignore in pci status register + */ +#define PCI_IGNORE 0x00 + +struct cpld_pic { + u8 pci_mask; + u8 pci_status; + u8 route; + u8 misc_mask; + u8 misc_status; + u8 misc_control; +}; + +static struct cpld_pic __iomem *cpld_regs; + +static void __iomem * +irq_to_pic_mask(unsigned int irq) +{ + return irq <= 7 ? &cpld_regs->pci_mask : &cpld_regs->misc_mask; +} + +static unsigned int +irq_to_pic_bit(unsigned int irq) +{ + return 1 << (irq & 0x7); +} + +static void +cpld_mask_irq(unsigned int irq) +{ + unsigned int cpld_irq = (unsigned int)irq_map[irq].hwirq; + void __iomem *pic_mask = irq_to_pic_mask(cpld_irq); + + out_8(pic_mask, + in_8(pic_mask) | irq_to_pic_bit(cpld_irq)); +} + +static void +cpld_unmask_irq(unsigned int irq) +{ + unsigned int cpld_irq = (unsigned int)irq_map[irq].hwirq; + void __iomem *pic_mask = irq_to_pic_mask(cpld_irq); + + out_8(pic_mask, + in_8(pic_mask) & ~irq_to_pic_bit(cpld_irq)); +} + +static struct irq_chip cpld_pic = { + .typename = " CPLD PIC ", + .mask = cpld_mask_irq, + .ack = cpld_mask_irq, + .unmask = cpld_unmask_irq, +}; + +static int +cpld_pic_get_irq(int offset, u8 ignore, u8 __iomem *statusp, + u8 __iomem *maskp) +{ + int cpld_irq; + u8 status = in_8(statusp); + u8 mask = in_8(maskp); + + /* ignore don't cares and masked irqs */ + status |= (ignore | mask); + + if (status == 0xff) + return NO_IRQ_IGNORE; + + cpld_irq = ffz(status) + offset; + + return irq_linear_revmap(cpld_pic_host, cpld_irq); +} + +static void +cpld_pic_cascade(unsigned int irq, struct irq_desc *desc) +{ + irq = cpld_pic_get_irq(0, PCI_IGNORE, &cpld_regs->pci_status, + &cpld_regs->pci_mask); + if (irq != NO_IRQ && irq != NO_IRQ_IGNORE) { + generic_handle_irq(irq); + return; + } + + irq = cpld_pic_get_irq(8, MISC_IGNORE, &cpld_regs->misc_status, + &cpld_regs->misc_mask); + if (irq != NO_IRQ && irq != NO_IRQ_IGNORE) { + generic_handle_irq(irq); + return; + } +} + +static int +cpld_pic_host_match(struct irq_host *h, struct device_node *node) +{ + return cpld_pic_node == node; +} + +static int +cpld_pic_host_map(struct irq_host *h, unsigned int virq, + irq_hw_number_t hw) +{ + get_irq_desc(virq)->status |= IRQ_LEVEL; + set_irq_chip_and_handler(virq, &cpld_pic, handle_level_irq); + return 0; +} + +static struct +irq_host_ops cpld_pic_host_ops = { + .match = cpld_pic_host_match, + .map = cpld_pic_host_map, +}; + +void __init +mpc5121_ads_cpld_map(void) +{ + struct device_node *np = NULL; + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121ads-cpld-pic"); + if (!np) { + printk(KERN_ERR "CPLD PIC init: can not find cpld-pic node\n"); + return; + } + + cpld_regs = of_iomap(np, 0); + of_node_put(np); +} + +void __init +mpc5121_ads_cpld_pic_init(void) +{ + unsigned int cascade_irq; + struct device_node *np = NULL; + + pr_debug("cpld_ic_init\n"); + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121ads-cpld-pic"); + if (!np) { + printk(KERN_ERR "CPLD PIC init: can not find cpld-pic node\n"); + return; + } + + if (!cpld_regs) + goto end; + + cascade_irq = irq_of_parse_and_map(np, 0); + if (cascade_irq == NO_IRQ) + goto end; + + /* + * statically route touch screen pendown through 1 + * and ignore it here + * route all others through our cascade irq + */ + out_8(&cpld_regs->route, 0xfd); + out_8(&cpld_regs->pci_mask, 0xff); + /* unmask pci ints in misc mask */ + out_8(&cpld_regs->misc_mask, ~(MISC_IGNORE)); + + cpld_pic_node = of_node_get(np); + + cpld_pic_host = + irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, 16, &cpld_pic_host_ops, 16); + if (!cpld_pic_host) { + printk(KERN_ERR "CPLD PIC: failed to allocate irq host!\n"); + goto end; + } + + set_irq_chained_handler(cascade_irq, cpld_pic_cascade); +end: + of_node_put(np); +} -- cgit v1.2.3 From 77a76369475801ab8cbb338b9d8cfa92a491badb Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Sat, 12 Jul 2008 12:11:43 -0600 Subject: powerpc: Modify MPC52xx maintainers entry to cover all MPC5xxx parts Linux now supports the MPC5121 part and is handled by the same maintainer. Update MAINTAINERS to reflect this. Also remove URLs which are out of date or are not particularly relevant. Signed-off-by: Grant Likely --- MAINTAINERS | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 8f0ec46a709..c984014a5ce 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2489,13 +2489,11 @@ W: http://www.penguinppc.org/ L: linuxppc-dev@ozlabs.org S: Maintained -LINUX FOR POWERPC EMBEDDED MPC52XX +LINUX FOR POWERPC EMBEDDED MPC5XXX P: Sylvain Munaut M: tnt@246tNt.com P: Grant Likely M: grant.likely@secretlab.ca -W: http://www.246tNt.com/mpc52xx/ -W: http://www.penguinppc.org/ L: linuxppc-dev@ozlabs.org S: Maintained -- cgit v1.2.3