From e89524d33deb55de28b4ab171e4b0f89d46b2d4e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 9 Sep 2010 11:12:12 +0200 Subject: spi/imx: default to m on platforms that have such devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Acked-by: Jason Wang Acked-by: Grant Likely Signed-off-by: Uwe Kleine-König Signed-off-by: Sascha Hauer --- drivers/spi/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/spi/Kconfig') diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 91c2f4f..30aea6d 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -147,6 +147,7 @@ config SPI_IMX tristate "Freescale i.MX SPI controllers" depends on ARCH_MXC select SPI_BITBANG + default m if IMX_HAVE_PLATFORM_SPI_IMX help This enables using the Freescale i.MX SPI controllers in master mode. -- cgit v1.1 From f4ba6315cb77a5dcff6664ce1d66ebfe31bcc6b1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 9 Sep 2010 15:29:01 +0200 Subject: spi/imx: convert driver to use platform ids MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This has the advantage not to need to much cpu_is_... macros. Still more when imx51 support is added which has two different spi interfaces which would introduce additional checks on the device id. With this setup it's not possible for the compiler anymore to detect the unused functions, so four additional kconfig symbols are introduced to ifdef out the unneeded functions in the callback array and all these functions are marked with __maybe_unused to suppress the corresponding gcc warnings. Comparing the driver footprint with and without the patch for a mx27 kernel yields: add/remove: 2/0 grow/shrink: 2/0 up/down: 280/0 (280) function old new delta spi_imx_devtype - 192 +192 spi_imx_probe 980 1032 +52 spi_imx_devtype_data - 32 +32 spi_imx_setupxfer 276 280 +4 Later when the platform code is updated to use the platform ids, the autodetection can be removed which will make the driver a bit smaller again. (~60 Bytes in my test.) Acked-by: Jason Wang Acked-by: Grant Likely Signed-off-by: Uwe Kleine-König Signed-off-by: Sascha Hauer --- drivers/spi/Kconfig | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/spi/Kconfig') diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 30aea6d..4e9d77b 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -143,6 +143,18 @@ config SPI_GPIO GPIO operations, you should be able to leverage that for better speed with a custom version of this driver; see the source code. +config SPI_IMX_VER_IMX1 + def_bool y if SOC_IMX1 + +config SPI_IMX_VER_0_0 + def_bool y if SOC_IMX21 || SOC_IMX27 + +config SPI_IMX_VER_0_4 + def_bool y if ARCH_MX31 + +config SPI_IMX_VER_0_7 + def_bool y if ARCH_MX25 || ARCH_MX35 + config SPI_IMX tristate "Freescale i.MX SPI controllers" depends on ARCH_MXC -- cgit v1.1 From 0b599603d8534bc3946a0f07e461c76d7947dfcf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Thu, 9 Sep 2010 21:02:48 +0200 Subject: spi/imx: add support for imx51's eCSPI and CSPI MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit i.MX51 comes with two eCSPI interfaces (that are quite different from what was known before---the tried and tested Freescale way) and a CSPI interface that is identical to the devices found on i.MX25 and i.MX35. This patch is a merge of two very similar patches (by Jason Wang and Sascha Hauer resp.) plus a (now hopefully correct) reimplementation of the clock calculation. Acked-by: Jason Wang Acked-by: Grant Likely Signed-off-by: Uwe Kleine-König Signed-off-by: Sascha Hauer --- drivers/spi/Kconfig | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/spi/Kconfig') diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 4e9d77b..7e631fa 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -153,7 +153,10 @@ config SPI_IMX_VER_0_4 def_bool y if ARCH_MX31 config SPI_IMX_VER_0_7 - def_bool y if ARCH_MX25 || ARCH_MX35 + def_bool y if ARCH_MX25 || ARCH_MX35 || ARCH_MX51 + +config SPI_IMX_VER_2_3 + def_bool y if ARCH_MX51 config SPI_IMX tristate "Freescale i.MX SPI controllers" -- cgit v1.1