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Message-ID: <1304363818-30479-1-git-send-email-linus.walleij@stericsson.com>
Date: Mon, 2 May 2011 21:16:58 +0200
From: Linus Walleij <linus.walleij@...ricsson.com>
To: <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>
Cc: Grant Likely <grant.likely@...retlab.ca>,
Lee Jones <lee.jones@...aro.org>,
Martin Persson <martin.persson@...ricsson.com>,
Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 4/4] pinmux: activate pinmux driver, delete old padmux driver
From: Linus Walleij <linus.walleij@...aro.org>
This hooks the pinmux driver into the U300 platform and deletes
the old machine-specific driver.
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
arch/arm/mach-u300/Kconfig | 2 +
arch/arm/mach-u300/Makefile | 2 +-
arch/arm/mach-u300/core.c | 30 +++-
arch/arm/mach-u300/include/mach/pinmux.h | 2 +
arch/arm/mach-u300/include/mach/syscon.h | 136 -----------
arch/arm/mach-u300/mmc.c | 16 --
arch/arm/mach-u300/padmux.c | 367 ------------------------------
arch/arm/mach-u300/padmux.h | 39 ----
arch/arm/mach-u300/spi.c | 20 --
9 files changed, 33 insertions(+), 581 deletions(-)
create mode 100644 arch/arm/mach-u300/include/mach/pinmux.h
delete mode 100644 arch/arm/mach-u300/padmux.c
delete mode 100644 arch/arm/mach-u300/padmux.h
diff --git a/arch/arm/mach-u300/Kconfig b/arch/arm/mach-u300/Kconfig
index 7b5c229..7b6aa8a 100644
--- a/arch/arm/mach-u300/Kconfig
+++ b/arch/arm/mach-u300/Kconfig
@@ -7,6 +7,8 @@ comment "ST-Ericsson Mobile Platform Products"
config MACH_U300
bool "U300"
select GPIO_U300
+ select MACH_HAS_PINMUX
+ select PINMUX_U300
comment "ST-Ericsson U300/U330/U335/U365 Feature Selections"
diff --git a/arch/arm/mach-u300/Makefile b/arch/arm/mach-u300/Makefile
index 73da230..4b909b4 100644
--- a/arch/arm/mach-u300/Makefile
+++ b/arch/arm/mach-u300/Makefile
@@ -2,7 +2,7 @@
# Makefile for the linux kernel, U300 machine.
#
-obj-y := core.o clock.o timer.o padmux.o
+obj-y := core.o clock.o timer.o
obj-$(CONFIG_ARCH_U300) += u300.o
obj-$(CONFIG_MMC) += mmc.o
obj-$(CONFIG_SPI_PL022) += spi.o
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index ddb604c..5e88d9e 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -26,6 +26,7 @@
#include <linux/mtd/nand.h>
#include <linux/mtd/fsmc.h>
#include <linux/gpio/u300.h>
+#include <linux/pinmux.h>
#include <asm/types.h>
#include <asm/setup.h>
@@ -1536,6 +1537,14 @@ static struct coh901318_platform coh901318_platform = {
.max_channels = U300_DMA_CHANNELS,
};
+static struct resource pinmux_resources[] = {
+ {
+ .start = U300_SYSCON_BASE,
+ .end = U300_SYSCON_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
static struct platform_device wdog_device = {
.name = "coh901327_wdog",
.id = -1,
@@ -1655,6 +1664,19 @@ static struct platform_device dma_device = {
},
};
+static struct platform_device pinmux_device = {
+ .name = "pinmux-u300",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(pinmux_resources),
+ .resource = pinmux_resources,
+};
+
+/* Pinmux settings */
+static struct pinmux_map u300_pinmux_map[] = {
+ PINMUX_MAP("mmc0", "mmci"),
+ PINMUX_MAP("spi0", "pl022"),
+};
+
/*
* Notice that AMBA devices are initialized before platform devices.
*
@@ -1668,10 +1690,10 @@ static struct platform_device *platform_devs[] __initdata = {
&gpio_device,
&nand_device,
&wdog_device,
- &ave_device
+ &ave_device,
+ &pinmux_device,
};
-
/*
* Interrupts: the U300 platforms have two pl190 ARM PrimeCells connected
* together so some interrupts are connected to the first one and some
@@ -1853,6 +1875,10 @@ void __init u300_init_devices(void)
u300_assign_physmem();
+ /* Initialize pinmuxing */
+ pinmux_register_mappings(u300_pinmux_map,
+ ARRAY_SIZE(u300_pinmux_map));
+
/* Register subdevices on the I2C buses */
u300_i2c_register_board_devices();
diff --git a/arch/arm/mach-u300/include/mach/pinmux.h b/arch/arm/mach-u300/include/mach/pinmux.h
new file mode 100644
index 0000000..e049895
--- /dev/null
+++ b/arch/arm/mach-u300/include/mach/pinmux.h
@@ -0,0 +1,2 @@
+/* This is the number of muxable pins on the DBxxxx SoCs */
+#define MACH_NR_PINS 467
diff --git a/arch/arm/mach-u300/include/mach/syscon.h b/arch/arm/mach-u300/include/mach/syscon.h
index 7444f5c..6e84f07 100644
--- a/arch/arm/mach-u300/include/mach/syscon.h
+++ b/arch/arm/mach-u300/include/mach/syscon.h
@@ -234,91 +234,6 @@
#define U300_SYSCON_ECCR_EMIF_1_RET_OUT_CLK_EN_N_DISABLE (0x0004)
#define U300_SYSCON_ECCR_EMIF_MEMCLK_RET_EN_N_DISABLE (0x0002)
#define U300_SYSCON_ECCR_EMIF_SDRCLK_RET_EN_N_DISABLE (0x0001)
-/* PAD MUX Control register 1 (LOW) 16bit (R/W) */
-#define U300_SYSCON_PMC1LR (0x007C)
-#define U300_SYSCON_PMC1LR_MASK (0xFFFF)
-#define U300_SYSCON_PMC1LR_CDI_MASK (0xC000)
-#define U300_SYSCON_PMC1LR_CDI_CDI (0x0000)
-#define U300_SYSCON_PMC1LR_CDI_EMIF (0x4000)
-#ifdef CONFIG_MACH_U300_BS335
-#define U300_SYSCON_PMC1LR_CDI_CDI2 (0x8000)
-#define U300_SYSCON_PMC1LR_CDI_WCDMA_APP_GPIO (0xC000)
-#elif CONFIG_MACH_U300_BS365
-#define U300_SYSCON_PMC1LR_CDI_GPIO (0x8000)
-#define U300_SYSCON_PMC1LR_CDI_WCDMA (0xC000)
-#endif
-#define U300_SYSCON_PMC1LR_PDI_MASK (0x3000)
-#define U300_SYSCON_PMC1LR_PDI_PDI (0x0000)
-#define U300_SYSCON_PMC1LR_PDI_EGG (0x1000)
-#define U300_SYSCON_PMC1LR_PDI_WCDMA (0x3000)
-#define U300_SYSCON_PMC1LR_MMCSD_MASK (0x0C00)
-#define U300_SYSCON_PMC1LR_MMCSD_MMCSD (0x0000)
-#define U300_SYSCON_PMC1LR_MMCSD_MSPRO (0x0400)
-#define U300_SYSCON_PMC1LR_MMCSD_DSP (0x0800)
-#define U300_SYSCON_PMC1LR_MMCSD_WCDMA (0x0C00)
-#define U300_SYSCON_PMC1LR_ETM_MASK (0x0300)
-#define U300_SYSCON_PMC1LR_ETM_ACC (0x0000)
-#define U300_SYSCON_PMC1LR_ETM_APP (0x0100)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS2_MASK (0x00C0)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS2_STATIC (0x0000)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS2_NFIF (0x0040)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS2_SDRAM (0x0080)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS2_STATIC_2GB (0x00C0)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS1_MASK (0x0030)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS1_STATIC (0x0000)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS1_NFIF (0x0010)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS1_SDRAM (0x0020)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS1_SEMI (0x0030)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS0_MASK (0x000C)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS0_STATIC (0x0000)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS0_NFIF (0x0004)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS0_SDRAM (0x0008)
-#define U300_SYSCON_PMC1LR_EMIF_1_CS0_SEMI (0x000C)
-#define U300_SYSCON_PMC1LR_EMIF_1_MASK (0x0003)
-#define U300_SYSCON_PMC1LR_EMIF_1_STATIC (0x0000)
-#define U300_SYSCON_PMC1LR_EMIF_1_SDRAM0 (0x0001)
-#define U300_SYSCON_PMC1LR_EMIF_1_SDRAM1 (0x0002)
-#define U300_SYSCON_PMC1LR_EMIF_1 (0x0003)
-/* PAD MUX Control register 2 (HIGH) 16bit (R/W) */
-#define U300_SYSCON_PMC1HR (0x007E)
-#define U300_SYSCON_PMC1HR_MASK (0xFFFF)
-#define U300_SYSCON_PMC1HR_MISC_2_MASK (0xC000)
-#define U300_SYSCON_PMC1HR_MISC_2_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC1HR_MISC_2_MSPRO (0x4000)
-#define U300_SYSCON_PMC1HR_MISC_2_DSP (0x8000)
-#define U300_SYSCON_PMC1HR_MISC_2_AAIF (0xC000)
-#define U300_SYSCON_PMC1HR_APP_GPIO_2_MASK (0x3000)
-#define U300_SYSCON_PMC1HR_APP_GPIO_2_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC1HR_APP_GPIO_2_NFIF (0x1000)
-#define U300_SYSCON_PMC1HR_APP_GPIO_2_DSP (0x2000)
-#define U300_SYSCON_PMC1HR_APP_GPIO_2_AAIF (0x3000)
-#define U300_SYSCON_PMC1HR_APP_GPIO_1_MASK (0x0C00)
-#define U300_SYSCON_PMC1HR_APP_GPIO_1_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC1HR_APP_GPIO_1_MMC (0x0400)
-#define U300_SYSCON_PMC1HR_APP_GPIO_1_DSP (0x0800)
-#define U300_SYSCON_PMC1HR_APP_GPIO_1_AAIF (0x0C00)
-#define U300_SYSCON_PMC1HR_APP_SPI_CS_2_MASK (0x0300)
-#define U300_SYSCON_PMC1HR_APP_SPI_CS_2_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC1HR_APP_SPI_CS_2_SPI (0x0100)
-#define U300_SYSCON_PMC1HR_APP_SPI_CS_2_AAIF (0x0300)
-#define U300_SYSCON_PMC1HR_APP_SPI_CS_1_MASK (0x00C0)
-#define U300_SYSCON_PMC1HR_APP_SPI_CS_1_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC1HR_APP_SPI_CS_1_SPI (0x0040)
-#define U300_SYSCON_PMC1HR_APP_SPI_CS_1_AAIF (0x00C0)
-#define U300_SYSCON_PMC1HR_APP_SPI_2_MASK (0x0030)
-#define U300_SYSCON_PMC1HR_APP_SPI_2_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC1HR_APP_SPI_2_SPI (0x0010)
-#define U300_SYSCON_PMC1HR_APP_SPI_2_DSP (0x0020)
-#define U300_SYSCON_PMC1HR_APP_SPI_2_AAIF (0x0030)
-#define U300_SYSCON_PMC1HR_APP_UART0_2_MASK (0x000C)
-#define U300_SYSCON_PMC1HR_APP_UART0_2_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC1HR_APP_UART0_2_UART0 (0x0004)
-#define U300_SYSCON_PMC1HR_APP_UART0_2_NFIF_CS (0x0008)
-#define U300_SYSCON_PMC1HR_APP_UART0_2_AAIF (0x000C)
-#define U300_SYSCON_PMC1HR_APP_UART0_1_MASK (0x0003)
-#define U300_SYSCON_PMC1HR_APP_UART0_1_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC1HR_APP_UART0_1_UART0 (0x0001)
-#define U300_SYSCON_PMC1HR_APP_UART0_1_AAIF (0x0003)
/* Step one for killing the applications system 16bit (-/W) */
#define U300_SYSCON_KA1R (0x0080)
#define U300_SYSCON_KA1R_MASK (0xFFFF)
@@ -357,57 +272,6 @@
#define U300_SYSCON_PUCR_EMIF_1_16BIT_PU_ENABLE (0x0080)
#define U300_SYSCON_PUCR_EMIF_1_8BIT_PU_ENABLE (0x0040)
#define U300_SYSCON_PUCR_KEY_IN_PU_EN_MASK (0x003F)
-/* Padmux 2 control */
-#define U300_SYSCON_PMC2R (0x100)
-#define U300_SYSCON_PMC2R_APP_MISC_0_MASK (0x00C0)
-#define U300_SYSCON_PMC2R_APP_MISC_0_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC2R_APP_MISC_0_EMIF_SDRAM (0x0040)
-#define U300_SYSCON_PMC2R_APP_MISC_0_MMC (0x0080)
-#define U300_SYSCON_PMC2R_APP_MISC_0_CDI2 (0x00C0)
-#define U300_SYSCON_PMC2R_APP_MISC_1_MASK (0x0300)
-#define U300_SYSCON_PMC2R_APP_MISC_1_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC2R_APP_MISC_1_EMIF_SDRAM (0x0100)
-#define U300_SYSCON_PMC2R_APP_MISC_1_MMC (0x0200)
-#define U300_SYSCON_PMC2R_APP_MISC_1_CDI2 (0x0300)
-#define U300_SYSCON_PMC2R_APP_MISC_2_MASK (0x0C00)
-#define U300_SYSCON_PMC2R_APP_MISC_2_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC2R_APP_MISC_2_EMIF_SDRAM (0x0400)
-#define U300_SYSCON_PMC2R_APP_MISC_2_MMC (0x0800)
-#define U300_SYSCON_PMC2R_APP_MISC_2_CDI2 (0x0C00)
-#define U300_SYSCON_PMC2R_APP_MISC_3_MASK (0x3000)
-#define U300_SYSCON_PMC2R_APP_MISC_3_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC2R_APP_MISC_3_EMIF_SDRAM (0x1000)
-#define U300_SYSCON_PMC2R_APP_MISC_3_MMC (0x2000)
-#define U300_SYSCON_PMC2R_APP_MISC_3_CDI2 (0x3000)
-#define U300_SYSCON_PMC2R_APP_MISC_4_MASK (0xC000)
-#define U300_SYSCON_PMC2R_APP_MISC_4_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC2R_APP_MISC_4_EMIF_SDRAM (0x4000)
-#define U300_SYSCON_PMC2R_APP_MISC_4_MMC (0x8000)
-#define U300_SYSCON_PMC2R_APP_MISC_4_ACC_GPIO (0xC000)
-/* TODO: More SYSCON registers missing */
-#define U300_SYSCON_PMC3R (0x10c)
-#define U300_SYSCON_PMC3R_APP_MISC_11_MASK (0xc000)
-#define U300_SYSCON_PMC3R_APP_MISC_11_SPI (0x4000)
-#define U300_SYSCON_PMC3R_APP_MISC_10_MASK (0x3000)
-#define U300_SYSCON_PMC3R_APP_MISC_10_SPI (0x1000)
-/* TODO: Missing other configs */
-#define U300_SYSCON_PMC4R (0x168)
-#define U300_SYSCON_PMC4R_APP_MISC_12_MASK (0x0003)
-#define U300_SYSCON_PMC4R_APP_MISC_12_APP_GPIO (0x0000)
-#define U300_SYSCON_PMC4R_APP_MISC_13_MASK (0x000C)
-#define U300_SYSCON_PMC4R_APP_MISC_13_CDI (0x0000)
-#define U300_SYSCON_PMC4R_APP_MISC_13_SMIA (0x0004)
-#define U300_SYSCON_PMC4R_APP_MISC_13_SMIA2 (0x0008)
-#define U300_SYSCON_PMC4R_APP_MISC_13_APP_GPIO (0x000C)
-#define U300_SYSCON_PMC4R_APP_MISC_14_MASK (0x0030)
-#define U300_SYSCON_PMC4R_APP_MISC_14_CDI (0x0000)
-#define U300_SYSCON_PMC4R_APP_MISC_14_SMIA (0x0010)
-#define U300_SYSCON_PMC4R_APP_MISC_14_CDI2 (0x0020)
-#define U300_SYSCON_PMC4R_APP_MISC_14_APP_GPIO (0x0030)
-#define U300_SYSCON_PMC4R_APP_MISC_16_MASK (0x0300)
-#define U300_SYSCON_PMC4R_APP_MISC_16_APP_GPIO_13 (0x0000)
-#define U300_SYSCON_PMC4R_APP_MISC_16_APP_UART1_CTS (0x0100)
-#define U300_SYSCON_PMC4R_APP_MISC_16_EMIF_1_STATIC_CS5_N (0x0200)
/* SYS_0_CLK_CONTROL first clock control 16bit (R/W) */
#define U300_SYSCON_S0CCR (0x120)
#define U300_SYSCON_S0CCR_FIELD_MASK (0x43FF)
diff --git a/arch/arm/mach-u300/mmc.c b/arch/arm/mach-u300/mmc.c
index 677ccef..d5e4a98 100644
--- a/arch/arm/mach-u300/mmc.c
+++ b/arch/arm/mach-u300/mmc.c
@@ -21,7 +21,6 @@
#include <mach/dma_channels.h>
#include "mmc.h"
-#include "padmux.h"
static struct mmci_platform_data mmc0_plat_data = {
/*
@@ -45,24 +44,9 @@ static struct mmci_platform_data mmc0_plat_data = {
int __devinit mmc_init(struct amba_device *adev)
{
struct device *mmcsd_device = &adev->dev;
- struct pmx *pmx;
int ret = 0;
mmcsd_device->platform_data = &mmc0_plat_data;
- /*
- * Setup padmuxing for MMC. Since this must always be
- * compiled into the kernel, pmx is never released.
- */
- pmx = pmx_get(mmcsd_device, U300_APP_PMX_MMC_SETTING);
-
- if (IS_ERR(pmx))
- pr_warning("Could not get padmux handle\n");
- else {
- ret = pmx_activate(mmcsd_device, pmx);
- if (IS_ERR_VALUE(ret))
- pr_warning("Could not activate padmuxing\n");
- }
-
return ret;
}
diff --git a/arch/arm/mach-u300/padmux.c b/arch/arm/mach-u300/padmux.c
deleted file mode 100644
index 4c93c6c..0000000
--- a/arch/arm/mach-u300/padmux.c
+++ /dev/null
@@ -1,367 +0,0 @@
-/*
- *
- * arch/arm/mach-u300/padmux.c
- *
- *
- * Copyright (C) 2009 ST-Ericsson AB
- * License terms: GNU General Public License (GPL) version 2
- * U300 PADMUX functions
- * Author: Martin Persson <martin.persson@...ricsson.com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/io.h>
-#include <linux/mutex.h>
-#include <linux/string.h>
-#include <linux/bug.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <mach/u300-regs.h>
-#include <mach/syscon.h>
-#include "padmux.h"
-
-static DEFINE_MUTEX(pmx_mutex);
-
-const u32 pmx_registers[] = {
- (U300_SYSCON_VBASE + U300_SYSCON_PMC1LR),
- (U300_SYSCON_VBASE + U300_SYSCON_PMC1HR),
- (U300_SYSCON_VBASE + U300_SYSCON_PMC2R),
- (U300_SYSCON_VBASE + U300_SYSCON_PMC3R),
- (U300_SYSCON_VBASE + U300_SYSCON_PMC4R)
-};
-
-/* High level functionality */
-
-/* Lazy dog:
- * onmask = {
- * {"PMC1LR" mask, "PMC1LR" value},
- * {"PMC1HR" mask, "PMC1HR" value},
- * {"PMC2R" mask, "PMC2R" value},
- * {"PMC3R" mask, "PMC3R" value},
- * {"PMC4R" mask, "PMC4R" value}
- * }
- */
-static struct pmx mmc_setting = {
- .setting = U300_APP_PMX_MMC_SETTING,
- .default_on = false,
- .activated = false,
- .name = "MMC",
- .onmask = {
- {U300_SYSCON_PMC1LR_MMCSD_MASK,
- U300_SYSCON_PMC1LR_MMCSD_MMCSD},
- {0, 0},
- {0, 0},
- {0, 0},
- {U300_SYSCON_PMC4R_APP_MISC_12_MASK,
- U300_SYSCON_PMC4R_APP_MISC_12_APP_GPIO}
- },
-};
-
-static struct pmx spi_setting = {
- .setting = U300_APP_PMX_SPI_SETTING,
- .default_on = false,
- .activated = false,
- .name = "SPI",
- .onmask = {{0, 0},
- {U300_SYSCON_PMC1HR_APP_SPI_2_MASK |
- U300_SYSCON_PMC1HR_APP_SPI_CS_1_MASK |
- U300_SYSCON_PMC1HR_APP_SPI_CS_2_MASK,
- U300_SYSCON_PMC1HR_APP_SPI_2_SPI |
- U300_SYSCON_PMC1HR_APP_SPI_CS_1_SPI |
- U300_SYSCON_PMC1HR_APP_SPI_CS_2_SPI},
- {0, 0},
- {0, 0},
- {0, 0}
- },
-};
-
-/* Available padmux settings */
-static struct pmx *pmx_settings[] = {
- &mmc_setting,
- &spi_setting,
-};
-
-static void update_registers(struct pmx *pmx, bool activate)
-{
- u16 regval, val, mask;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(pmx_registers); i++) {
- if (activate)
- val = pmx->onmask[i].val;
- else
- val = 0;
-
- mask = pmx->onmask[i].mask;
- if (mask != 0) {
- regval = readw(pmx_registers[i]);
- regval &= ~mask;
- regval |= val;
- writew(regval, pmx_registers[i]);
- }
- }
-}
-
-struct pmx *pmx_get(struct device *dev, enum pmx_settings setting)
-{
- int i;
- struct pmx *pmx = ERR_PTR(-ENOENT);
-
- if (dev == NULL)
- return ERR_PTR(-EINVAL);
-
- mutex_lock(&pmx_mutex);
- for (i = 0; i < ARRAY_SIZE(pmx_settings); i++) {
-
- if (setting == pmx_settings[i]->setting) {
-
- if (pmx_settings[i]->dev != NULL) {
- WARN(1, "padmux: required setting "
- "in use by another consumer\n");
- } else {
- pmx = pmx_settings[i];
- pmx->dev = dev;
- dev_dbg(dev, "padmux: setting nr %d is now "
- "bound to %s and ready to use\n",
- setting, dev_name(dev));
- break;
- }
- }
- }
- mutex_unlock(&pmx_mutex);
-
- return pmx;
-}
-EXPORT_SYMBOL(pmx_get);
-
-int pmx_put(struct device *dev, struct pmx *pmx)
-{
- int i;
- int ret = -ENOENT;
-
- if (pmx == NULL || dev == NULL)
- return -EINVAL;
-
- mutex_lock(&pmx_mutex);
- for (i = 0; i < ARRAY_SIZE(pmx_settings); i++) {
-
- if (pmx->setting == pmx_settings[i]->setting) {
-
- if (dev != pmx->dev) {
- WARN(1, "padmux: cannot release handle as "
- "it is bound to another consumer\n");
- ret = -EINVAL;
- break;
- } else {
- pmx_settings[i]->dev = NULL;
- ret = 0;
- break;
- }
- }
- }
- mutex_unlock(&pmx_mutex);
-
- return ret;
-}
-EXPORT_SYMBOL(pmx_put);
-
-int pmx_activate(struct device *dev, struct pmx *pmx)
-{
- int i, j, ret;
- ret = 0;
-
- if (pmx == NULL || dev == NULL)
- return -EINVAL;
-
- mutex_lock(&pmx_mutex);
-
- /* Make sure the required bits are not used */
- for (i = 0; i < ARRAY_SIZE(pmx_settings); i++) {
-
- if (pmx_settings[i]->dev == NULL || pmx_settings[i] == pmx)
- continue;
-
- for (j = 0; j < ARRAY_SIZE(pmx_registers); j++) {
-
- if (pmx_settings[i]->onmask[j].mask & pmx->
- onmask[j].mask) {
- /* More than one entry on the same bits */
- WARN(1, "padmux: cannot activate "
- "setting. Bit conflict with "
- "an active setting\n");
-
- ret = -EUSERS;
- goto exit;
- }
- }
- }
- update_registers(pmx, true);
- pmx->activated = true;
- dev_dbg(dev, "padmux: setting nr %d is activated\n",
- pmx->setting);
-
-exit:
- mutex_unlock(&pmx_mutex);
- return ret;
-}
-EXPORT_SYMBOL(pmx_activate);
-
-int pmx_deactivate(struct device *dev, struct pmx *pmx)
-{
- int i;
- int ret = -ENOENT;
-
- if (pmx == NULL || dev == NULL)
- return -EINVAL;
-
- mutex_lock(&pmx_mutex);
- for (i = 0; i < ARRAY_SIZE(pmx_settings); i++) {
-
- if (pmx_settings[i]->dev == NULL)
- continue;
-
- if (pmx->setting == pmx_settings[i]->setting) {
-
- if (dev != pmx->dev) {
- WARN(1, "padmux: cannot deactivate "
- "pmx setting as it was activated "
- "by another consumer\n");
-
- ret = -EBUSY;
- continue;
- } else {
- update_registers(pmx, false);
- pmx_settings[i]->dev = NULL;
- pmx->activated = false;
- ret = 0;
- dev_dbg(dev, "padmux: setting nr %d is deactivated",
- pmx->setting);
- break;
- }
- }
- }
- mutex_unlock(&pmx_mutex);
-
- return ret;
-}
-EXPORT_SYMBOL(pmx_deactivate);
-
-/*
- * For internal use only. If it is to be exported,
- * it should be reentrant. Notice that pmx_activate
- * (i.e. runtime settings) always override default settings.
- */
-static int pmx_set_default(void)
-{
- /* Used to identify several entries on the same bits */
- u16 modbits[ARRAY_SIZE(pmx_registers)];
-
- int i, j;
-
- memset(modbits, 0, ARRAY_SIZE(pmx_registers) * sizeof(u16));
-
- for (i = 0; i < ARRAY_SIZE(pmx_settings); i++) {
-
- if (!pmx_settings[i]->default_on)
- continue;
-
- for (j = 0; j < ARRAY_SIZE(pmx_registers); j++) {
-
- /* Make sure there is only one entry on the same bits */
- if (modbits[j] & pmx_settings[i]->onmask[j].mask) {
- BUG();
- return -EUSERS;
- }
- modbits[j] |= pmx_settings[i]->onmask[j].mask;
- }
- update_registers(pmx_settings[i], true);
- }
- return 0;
-}
-
-#if (defined(CONFIG_DEBUG_FS) && defined(CONFIG_U300_DEBUG))
-static int pmx_show(struct seq_file *s, void *data)
-{
- int i;
- seq_printf(s, "-------------------------------------------------\n");
- seq_printf(s, "SETTING BOUND TO DEVICE STATE\n");
- seq_printf(s, "-------------------------------------------------\n");
- mutex_lock(&pmx_mutex);
- for (i = 0; i < ARRAY_SIZE(pmx_settings); i++) {
- /* Format pmx and device name nicely */
- char cdp[33];
- int chars;
-
- chars = snprintf(&cdp[0], 17, "%s", pmx_settings[i]->name);
- while (chars < 16) {
- cdp[chars] = ' ';
- chars++;
- }
- chars = snprintf(&cdp[16], 17, "%s", pmx_settings[i]->dev ?
- dev_name(pmx_settings[i]->dev) : "N/A");
- while (chars < 16) {
- cdp[chars+16] = ' ';
- chars++;
- }
- cdp[32] = '\0';
-
- seq_printf(s,
- "%s\t%s\n",
- &cdp[0],
- pmx_settings[i]->activated ?
- "ACTIVATED" : "DEACTIVATED"
- );
-
- }
- mutex_unlock(&pmx_mutex);
- return 0;
-}
-
-static int pmx_open(struct inode *inode, struct file *file)
-{
- return single_open(file, pmx_show, NULL);
-}
-
-static const struct file_operations pmx_operations = {
- .owner = THIS_MODULE,
- .open = pmx_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int __init init_pmx_read_debugfs(void)
-{
- /* Expose a simple debugfs interface to view pmx settings */
- (void) debugfs_create_file("padmux", S_IFREG | S_IRUGO,
- NULL, NULL,
- &pmx_operations);
- return 0;
-}
-
-/*
- * This needs to come in after the core_initcall(),
- * because debugfs is not available until
- * the subsystems come up.
- */
-module_init(init_pmx_read_debugfs);
-#endif
-
-static int __init pmx_init(void)
-{
- int ret;
-
- ret = pmx_set_default();
-
- if (IS_ERR_VALUE(ret))
- pr_crit("padmux: default settings could not be set\n");
-
- return 0;
-}
-
-/* Should be initialized before consumers */
-core_initcall(pmx_init);
diff --git a/arch/arm/mach-u300/padmux.h b/arch/arm/mach-u300/padmux.h
deleted file mode 100644
index 6e8b860..0000000
--- a/arch/arm/mach-u300/padmux.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- *
- * arch/arm/mach-u300/padmux.h
- *
- *
- * Copyright (C) 2009 ST-Ericsson AB
- * License terms: GNU General Public License (GPL) version 2
- * U300 PADMUX API
- * Author: Martin Persson <martin.persson@...ricsson.com>
- */
-
-#ifndef __MACH_U300_PADMUX_H
-#define __MACH_U300_PADMUX_H
-
-enum pmx_settings {
- U300_APP_PMX_MMC_SETTING,
- U300_APP_PMX_SPI_SETTING
-};
-
-struct pmx_onmask {
- u16 mask; /* Mask bits */
- u16 val; /* Value when active */
-};
-
-struct pmx {
- struct device *dev;
- enum pmx_settings setting;
- char *name;
- bool activated;
- bool default_on;
- struct pmx_onmask onmask[];
-};
-
-struct pmx *pmx_get(struct device *dev, enum pmx_settings setting);
-int pmx_put(struct device *dev, struct pmx *pmx);
-int pmx_activate(struct device *dev, struct pmx *pmx);
-int pmx_deactivate(struct device *dev, struct pmx *pmx);
-
-#endif
diff --git a/arch/arm/mach-u300/spi.c b/arch/arm/mach-u300/spi.c
index 5767208..628e785 100644
--- a/arch/arm/mach-u300/spi.c
+++ b/arch/arm/mach-u300/spi.c
@@ -14,8 +14,6 @@
#include <mach/coh901318.h>
#include <mach/dma_channels.h>
-#include "padmux.h"
-
/*
* The following is for the actual devices on the SSP/SPI bus
*/
@@ -95,25 +93,7 @@ static struct pl022_ssp_controller ssp_platform_data = {
void __init u300_spi_init(struct amba_device *adev)
{
- struct pmx *pmx;
-
adev->dev.platform_data = &ssp_platform_data;
- /*
- * Setup padmuxing for SPI. Since this must always be
- * compiled into the kernel, pmx is never released.
- */
- pmx = pmx_get(&adev->dev, U300_APP_PMX_SPI_SETTING);
-
- if (IS_ERR(pmx))
- dev_warn(&adev->dev, "Could not get padmux handle\n");
- else {
- int ret;
-
- ret = pmx_activate(&adev->dev, pmx);
- if (IS_ERR_VALUE(ret))
- dev_warn(&adev->dev, "Could not activate padmuxing\n");
- }
-
}
void __init u300_spi_register_board_devices(void)
--
1.7.3.2
--
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