diff options
author | Arnd Bergmann <arnd@arndb.de> | 2013-06-20 01:51:18 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2013-06-20 01:51:18 +0200 |
commit | c3b693d1d63444afe4fbf809d8a311b63741e503 (patch) | |
tree | 5c0c264203967f1524ac28645f0b5cea57b624bc /arch/arm/mach-u300/spi.c | |
parent | 596fd95ea606548adaa8310a7c05a6dcfec46f16 (diff) | |
parent | 7fca1f20c0f3e9d7a3b23ee1fc9e832f520f3f1a (diff) |
Merge tag 'u300-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/soc
From Linus Walleij:
Device Tree and Multiplatform support for U300:
- Add devicetree support to timer, pinctrl (probe), I2C block,
watchdog, DMA controller and clocks.
- Piecewise add a device tree containing all peripherals.
- Delete the ATAG boot path.
- Delete redundant platform data and board files.
- Convert to multiplatform.
* tag 'u300-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson: (40 commits)
ARM: u300: switch to using syscon regmap for board
ARM: u300: Update MMC configs for u300 defconfig
spi: pl022: use DMA by default when probing from DT
pinctrl: get rid of all platform data for coh901
ARM: u300: convert MMC/SD clock to device tree
ARM: u300: move the gated system controller clocks to DT
i2c: stu300: do not request a specific clock name
clk: move the U300 fixed and fixed-factor to DT
ARM: u300: remove register definition file
ARM: u300: add syscon node
ARM: u300 use module_spi_driver to register driver
ARM: u300: delete remnant machine headers
ARM: u300: convert to multiplatform
ARM: u300: localize <mach/u300-regs.h>
ARM: u300: delete <mach/irqs.h>
ARM: u300: delete <mach/hardware.h>
ARM: u300: push down syscon registers
ARM: u300: remove deps from debug macro
ARM: u300: move debugmacro to debug includes
ARM: u300: delete all static board data
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-u300/spi.c')
-rw-r--r-- | arch/arm/mach-u300/spi.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/arch/arm/mach-u300/spi.c b/arch/arm/mach-u300/spi.c deleted file mode 100644 index 910698293d64..000000000000 --- a/arch/arm/mach-u300/spi.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * arch/arm/mach-u300/spi.c - * - * Copyright (C) 2009 ST-Ericsson AB - * License terms: GNU General Public License (GPL) version 2 - * - * Author: Linus Walleij <linus.walleij@stericsson.com> - */ -#include <linux/device.h> -#include <linux/amba/bus.h> -#include <linux/spi/spi.h> -#include <linux/amba/pl022.h> -#include <linux/platform_data/dma-coh901318.h> -#include <linux/err.h> - -/* - * The following is for the actual devices on the SSP/SPI bus - */ -#ifdef CONFIG_MACH_U300_SPIDUMMY -static void select_dummy_chip(u32 chipselect) -{ - pr_debug("CORE: %s called with CS=0x%x (%s)\n", - __func__, - chipselect, - chipselect ? "unselect chip" : "select chip"); - /* - * Here you would write the chip select value to the GPIO pins if - * this was a real chip (but this is a loopback dummy). - */ -} - -struct pl022_config_chip dummy_chip_info = { - /* available POLLING_TRANSFER, INTERRUPT_TRANSFER, DMA_TRANSFER */ - .com_mode = DMA_TRANSFER, - .iface = SSP_INTERFACE_MOTOROLA_SPI, - /* We can only act as master but SSP_SLAVE is possible in theory */ - .hierarchy = SSP_MASTER, - /* 0 = drive TX even as slave, 1 = do not drive TX as slave */ - .slave_tx_disable = 0, - .rx_lev_trig = SSP_RX_4_OR_MORE_ELEM, - .tx_lev_trig = SSP_TX_4_OR_MORE_EMPTY_LOC, - .ctrl_len = SSP_BITS_12, - .wait_state = SSP_MWIRE_WAIT_ZERO, - .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX, - /* - * This is where you insert a call to a function to enable CS - * (usually GPIO) for a certain chip. - */ - .cs_control = select_dummy_chip, -}; -#endif - -static struct spi_board_info u300_spi_devices[] = { -#ifdef CONFIG_MACH_U300_SPIDUMMY - { - /* A dummy chip used for loopback tests */ - .modalias = "spi-dummy", - /* Really dummy, pass in additional chip config here */ - .platform_data = NULL, - /* This defines how the controller shall handle the device */ - .controller_data = &dummy_chip_info, - /* .irq - no external IRQ routed from this device */ - .max_speed_hz = 1000000, - .bus_num = 0, /* Only one bus on this chip */ - .chip_select = 0, - /* Means SPI_CS_HIGH, change if e.g low CS */ - .mode = SPI_MODE_1 | SPI_LOOP, - }, -#endif -}; - -static struct pl022_ssp_controller ssp_platform_data = { - /* If you have several SPI buses this varies, we have only bus 0 */ - .bus_id = 0, - /* - * On the APP CPU GPIO 4, 5 and 6 are connected as generic - * chip selects for SPI. (Same on U330, U335 and U365.) - * TODO: make sure the GPIO driver can select these properly - * and do padmuxing accordingly too. - */ - .num_chipselect = 3, -#ifdef CONFIG_COH901318 - .enable_dma = 1, - .dma_filter = coh901318_filter_id, - .dma_rx_param = (void *) U300_DMA_SPI_RX, - .dma_tx_param = (void *) U300_DMA_SPI_TX, -#else - .enable_dma = 0, -#endif -}; - - -void __init u300_spi_init(struct amba_device *adev) -{ - adev->dev.platform_data = &ssp_platform_data; -} - -void __init u300_spi_register_board_devices(void) -{ - /* Register any SPI devices */ - spi_register_board_info(u300_spi_devices, ARRAY_SIZE(u300_spi_devices)); -} |