diff options
Diffstat (limited to 'packages/linux/linux-2.6.27/boc01/008-081208-spi.patch')
| -rw-r--r-- | packages/linux/linux-2.6.27/boc01/008-081208-spi.patch | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/packages/linux/linux-2.6.27/boc01/008-081208-spi.patch b/packages/linux/linux-2.6.27/boc01/008-081208-spi.patch new file mode 100644 index 0000000000..96179f6597 --- /dev/null +++ b/packages/linux/linux-2.6.27/boc01/008-081208-spi.patch @@ -0,0 +1,143 @@ +--- linux-2.6.27.orig/arch/powerpc/platforms/83xx/mpc831x_rdb.c 2008-10-10 00:13:53.000000000 +0200 ++++ linux-2.6.27/arch/powerpc/platforms/83xx/mpc831x_rdb.c 2008-12-12 09:45:19.000000000 +0100 +@@ -15,17 +15,87 @@ + + #include <linux/pci.h> + #include <linux/of_platform.h> ++#include <linux/spi/spi.h> + + #include <asm/time.h> + #include <asm/ipic.h> + #include <asm/udbg.h> + #include <sysdev/fsl_pci.h> ++#include <sysdev/fsl_soc.h> ++#include <linux/interrupt.h> + + #include "mpc83xx.h" + + /* + * Setup the architecture + */ ++struct gpio { ++ __be32 gpdir; ++ __be32 gpodr; ++ __be32 gpdat; ++ __be32 gpier; ++ __be32 gpimr; ++ __be32 gpicr; ++} __attribute__ ((packed)); ++static struct gpio *gpio_regs; ++ ++static void mpc83xx_spi_activate_cs(u8 cs, u8 polarity) ++{ ++ //printk(KERN_INFO "%s %d %d\n", __func__, cs, polarity); ++ if (polarity) ++ setbits32(&gpio_regs->gpdat, 1 << (31 - 14)); ++ else ++ clrbits32(&gpio_regs->gpdat, 1 << (31 - 14)); ++} ++ ++static void mpc83xx_spi_deactivate_cs(u8 cs, u8 polarity) ++{ ++//printk(KERN_INFO "%s %d %d\n", __func__, cs, polarity); ++ if (polarity) ++ clrbits32(&gpio_regs->gpdat, 1 << (31 - 14)); ++ else ++ setbits32(&gpio_regs->gpdat, 1 << (31 - 14)); ++ ++} ++ ++//static struct mmc_spi_platform_data mpc8313_mmc_pdata = { ++// .ocr_mask = MMC_VDD_33_34, ++//}; ++ ++static struct spi_board_info mpc8313_spi_boardinfo = { ++ .bus_num = 0x7000, ++ .chip_select = 0, ++ .max_speed_hz = 50000000, ++ .modalias = "spidev", ++// .platform_data = &mpc8313_mmc_pdata, ++}; ++ ++static int __init mpc8313_spi_init(void) ++{ ++ __be32 __iomem *psicrl; ++ ++ /* System I/O Configuration Register Low */ ++ psicrl = ioremap(get_immrbase() + MPC83XX_SICRL_OFFS, 0x4); ++ gpio_regs = ioremap(get_immrbase() + 0xc00, 0x20); ++ if (!psicrl || !gpio_regs) ++ return -ENOMEM; ++ ++ clrbits32(psicrl, 0x03F00000); ++ setbits32(psicrl, 0x30000000); ++ iounmap(psicrl); ++ ++ /* set GPIO13 as output */ ++ setbits32(&gpio_regs->gpdir, 1 << (31 - 14)); ++ clrbits32(&gpio_regs->gpodr, 1 << (31 - 14)); ++ setbits32(&gpio_regs->gpdat, 1 << (31 - 14)); ++ ++ return fsl_spi_init(&mpc8313_spi_boardinfo, 1, ++ mpc83xx_spi_activate_cs, ++ mpc83xx_spi_deactivate_cs); ++} ++ ++device_initcall(mpc8313_spi_init); ++ + static void __init mpc831x_rdb_setup_arch(void) + { + #ifdef CONFIG_PCI +@@ -40,6 +110,8 @@ + mpc83xx_add_bridge(np); + #endif + mpc831x_usb_cfg(); ++ ++ mpc8313_spi_init(); + } + + void __init mpc831x_rdb_init_IRQ(void) +--- linux-2.6.27.orig/drivers/spi/spi_mpc83xx.c 2008-10-10 00:13:53.000000000 +0200 ++++ linux-2.6.27.modif/drivers/spi/spi_mpc83xx.c 2008-12-08 14:45:12.000000000 +0100 +@@ -280,7 +280,9 @@ + if (pm) + pm--; + +- cs->hw_mode |= SPMODE_PM(pm); ++ cs->hw_mode = 0x0F700000; ++ mpc83xx_spi_write_reg(&mpc83xx_spi->base->mode,cs->hw_mode); ++ + regval = mpc83xx_spi_read_reg(&mpc83xx_spi->base->mode); + if (cs->hw_mode != regval) { + unsigned long flags; +@@ -448,7 +450,7 @@ + cs->hw_mode = mpc83xx_spi_read_reg(&mpc83xx_spi->base->mode); + /* mask out bits we are going to set */ + cs->hw_mode &= ~(SPMODE_CP_BEGIN_EDGECLK | SPMODE_CI_INACTIVEHIGH +- | SPMODE_REV | SPMODE_LOOP); ++ | SPMODE_REV ); + + if (spi->mode & SPI_CPHA) + cs->hw_mode |= SPMODE_CP_BEGIN_EDGECLK; +@@ -456,8 +458,10 @@ + cs->hw_mode |= SPMODE_CI_INACTIVEHIGH; + if (!(spi->mode & SPI_LSB_FIRST)) + cs->hw_mode |= SPMODE_REV; +- if (spi->mode & SPI_LOOP) +- cs->hw_mode |= SPMODE_LOOP; ++ ++ cs->hw_mode = 0x0F700000; ++ mpc83xx_spi_write_reg(&mpc83xx_spi->base->mode,cs->hw_mode); ++ cs->hw_mode = mpc83xx_spi_read_reg(&mpc83xx_spi->base->mode); + + retval = mpc83xx_spi_setup_transfer(spi, NULL); + if (retval < 0) { +@@ -637,7 +641,7 @@ + INIT_LIST_HEAD(&mpc83xx_spi->queue); + + mpc83xx_spi->workqueue = create_singlethread_workqueue( +- master->dev.parent->bus_id); ++ dev->dev.bus_id); + if (mpc83xx_spi->workqueue == NULL) { + ret = -EBUSY; + goto free_irq; |