From: heiko@sntech•de (Heiko Stübner)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 5/6] ARM: S3C24XX: Add HSSPI setup callback for s3c64xx-spi driver
Date: Mon, 12 Mar 2012 20:03:03 +0100 [thread overview]
Message-ID: <201203122003.03303.heiko@sntech.de> (raw)
In-Reply-To: <201203121959.32966.heiko@sntech.de>
This lets the s3c64xx-spi driver know the specifics of the controller-
variant and also setups the gpios and the misccr bit.
This setup is valid for all S3C24XX SoCs containing a HSSPI controller
(i.e. S3C2416/2450 and S3C2443)
Signed-off-by: Heiko Stuebner <heiko@sntech•de>
---
changes since v1: adapt to changes in Makefile
arch/arm/mach-s3c24xx/Kconfig | 5 ++++
arch/arm/mach-s3c24xx/Makefile | 1 +
arch/arm/mach-s3c24xx/setup-spi.c | 39 +++++++++++++++++++++++++++++++++++++
3 files changed, 45 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-s3c24xx/setup-spi.c
diff --git a/arch/arm/mach-s3c24xx/Kconfig b/arch/arm/mach-s3c24xx/Kconfig
index 0f3a327..38e6b30 100644
--- a/arch/arm/mach-s3c24xx/Kconfig
+++ b/arch/arm/mach-s3c24xx/Kconfig
@@ -518,6 +518,11 @@ config S3C2443_DMA
help
Internal config node for S3C2443 DMA support
+config S3C2443_SETUP_SPI
+ bool
+ help
+ Common setup code for SPI GPIO configurations
+
endif # CPU_S3C2443 || CPU_S3C2416
if CPU_S3C2443
diff --git a/arch/arm/mach-s3c24xx/Makefile b/arch/arm/mach-s3c24xx/Makefile
index 3518fe8..d0f3a92 100644
--- a/arch/arm/mach-s3c24xx/Makefile
+++ b/arch/arm/mach-s3c24xx/Makefile
@@ -91,5 +91,6 @@ obj-$(CONFIG_MACH_OSIRIS_DVS) += mach-osiris-dvs.o
# device setup
obj-$(CONFIG_S3C2416_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
+obj-$(CONFIG_S3C2443_SETUP_SPI) += setup-spi.o
obj-$(CONFIG_ARCH_S3C24XX) += setup-i2c.o
obj-$(CONFIG_S3C24XX_SETUP_TS) += setup-ts.o
diff --git a/arch/arm/mach-s3c24xx/setup-spi.c b/arch/arm/mach-s3c24xx/setup-spi.c
new file mode 100644
index 0000000..5712c85
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/setup-spi.c
@@ -0,0 +1,39 @@
+/*
+ * HS-SPI device setup for S3C2443/S3C2416
+ *
+ * Copyright (C) 2011 Samsung Electronics Ltd.
+ * http://www.samsung.com/
+ *
+ * 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 <linux/gpio.h>
+#include <linux/platform_device.h>
+
+#include <plat/gpio-cfg.h>
+#include <plat/s3c64xx-spi.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-gpio.h>
+
+#ifdef CONFIG_S3C64XX_DEV_SPI0
+struct s3c64xx_spi_info s3c64xx_spi0_pdata __initdata = {
+ .fifo_lvl_mask = 0x7f,
+ .rx_lvl_offset = 13,
+ .tx_st_done = 21,
+ .high_speed = 1,
+};
+
+int s3c64xx_spi0_cfg_gpio(struct platform_device *pdev)
+{
+ /* enable hsspi bit in misccr */
+ s3c2410_modify_misccr(S3C2416_MISCCR_HSSPI_EN2, 1);
+
+ s3c_gpio_cfgall_range(S3C2410_GPE(11), 3,
+ S3C_GPIO_SFN(2), S3C_GPIO_PULL_UP);
+
+ return 0;
+}
+#endif
--
1.7.2.3
next prev parent reply other threads:[~2012-03-12 19:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-12 18:59 [PATCH 0/6] S3C24XX: Add support for HSSPI on S3C2416/S3C2443 Heiko Stübner
2012-03-12 19:00 ` [PATCH 1/6] ARM: S3C24XX: Add forgotten clock lookup table to S3C2443 Heiko Stübner
2012-04-02 21:08 ` Kukjin Kim
2012-04-02 22:37 ` Heiko Stübner
2012-04-25 1:36 ` Kukjin Kim
2012-03-12 19:01 ` [PATCH 2/6] ARM: S3C24XX: claim spi channels for hsspi in dma-s3c2443 Heiko Stübner
2012-03-12 19:01 ` [PATCH 3/6] ARM: S3C24XX: Add map entries needed by the s3c64xx-spi devices Heiko Stübner
2012-03-12 19:02 ` [PATCH 4/6] ARM: S3C24XX: Add clock-lookup entries required by s3c64xx-spi Heiko Stübner
2012-03-12 19:03 ` Heiko Stübner [this message]
2012-03-12 19:03 ` [PATCH 6/6] spi/s3c64xx: Allow usage for ARCH_S3C24XX Heiko Stübner
2012-04-02 19:25 ` [PATCH 0/6] S3C24XX: Add support for HSSPI on S3C2416/S3C2443 Heiko Stübner
2012-04-02 21:00 ` Kukjin Kim
2012-04-25 1:37 ` Kukjin Kim
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