ar71xx: nuke 3.3 support

[openwrt/svn-archive/archive.git] / target / linux / ar71xx / patches-3.3 / 204-spi-ath79-avoid-multiple-initialization-of-the-SPI-c.patch

diff --git a/target/linux/ar71xx/patches-3.3/204-spi-ath79-avoid-multiple-initialization-of-the-SPI-c.patch b/target/linux/ar71xx/patches-3.3/204-spi-ath79-avoid-multiple-initialization-of-the-SPI-c.patch
deleted file mode 100644 (file)
index 084bd98..0000000
--- a/target/linux/ar71xx/patches-3.3/204-spi-ath79-avoid-multiple-initialization-of-the-SPI-c.patch
+++ /dev/null
@@ -1,108 +0,0 @@
-From e63ceaa0c4f7be0498cd452981073d3ce8e7d1f5 Mon Sep 17 00:00:00 2001
-From: Gabor Juhos <juhosg@openwrt.org>
-Date: Mon, 9 Jan 2012 15:00:46 +0100
-Subject: [PATCH 32/34] spi/ath79: avoid multiple initialization of the SPI controller
-
-Currently we are initializing the SPI controller in
-the chip select line function, and that function is
-called once for each SPI device on the bus. If a
-board has multiple SPI devices, the controller will
-be initialized multiple times.
-
-Introduce ath79_spi_{en,dis}able helper functions,
-and call those from probe/response in order to avoid
-the mutliple initialization of the controller.
-
-Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
----
- drivers/spi/spi-ath79.c |   41 ++++++++++++++++++++++++-----------------
- 1 files changed, 24 insertions(+), 17 deletions(-)
-
---- a/drivers/spi/spi-ath79.c
-+++ b/drivers/spi/spi-ath79.c
-@@ -96,16 +96,8 @@ static void ath79_spi_chipselect(struct
- 
- }
- 
--static int ath79_spi_setup_cs(struct spi_device *spi)
-+static void ath79_spi_enable(struct ath79_spi *sp)
- {
--      struct ath79_spi *sp = ath79_spidev_to_sp(spi);
--      struct ath79_spi_controller_data *cdata;
--      int status;
--
--      cdata = spi->controller_data;
--      if (spi->chip_select && !cdata)
--              return -EINVAL;
--
-       /* enable GPIO mode */
-       ath79_spi_wr(sp, AR71XX_SPI_REG_FS, AR71XX_SPI_FS_GPIO);
- 
-@@ -115,6 +107,24 @@ static int ath79_spi_setup_cs(struct spi
- 
-       /* TODO: setup speed? */
-       ath79_spi_wr(sp, AR71XX_SPI_REG_CTRL, 0x43);
-+}
-+
-+static void ath79_spi_disable(struct ath79_spi *sp)
-+{
-+      /* restore CTRL register */
-+      ath79_spi_wr(sp, AR71XX_SPI_REG_CTRL, sp->reg_ctrl);
-+      /* disable GPIO mode */
-+      ath79_spi_wr(sp, AR71XX_SPI_REG_FS, 0);
-+}
-+
-+static int ath79_spi_setup_cs(struct spi_device *spi)
-+{
-+      struct ath79_spi_controller_data *cdata;
-+      int status;
-+
-+      cdata = spi->controller_data;
-+      if (spi->chip_select && !cdata)
-+              return -EINVAL;
- 
-       status = 0;
-       if (spi->chip_select) {
-@@ -135,17 +145,10 @@ static int ath79_spi_setup_cs(struct spi
- 
- static void ath79_spi_cleanup_cs(struct spi_device *spi)
- {
--      struct ath79_spi *sp = ath79_spidev_to_sp(spi);
--
-       if (spi->chip_select) {
-               struct ath79_spi_controller_data *cdata = spi->controller_data;
-               gpio_free(cdata->gpio);
-       }
--
--      /* restore CTRL register */
--      ath79_spi_wr(sp, AR71XX_SPI_REG_CTRL, sp->reg_ctrl);
--      /* disable GPIO mode */
--      ath79_spi_wr(sp, AR71XX_SPI_REG_FS, 0);
- }
- 
- static int ath79_spi_setup(struct spi_device *spi)
-@@ -271,12 +274,15 @@ static __devinit int ath79_spi_probe(str
-       dev_dbg(&pdev->dev, "register read/write delay is %u nsecs\n",
-               sp->rrw_delay);
- 
-+      ath79_spi_enable(sp);
-       ret = spi_bitbang_start(&sp->bitbang);
-       if (ret)
--              goto err_clk_disable;
-+              goto err_disable;
- 
-       return 0;
- 
-+err_disable:
-+      ath79_spi_disable(sp);
- err_clk_disable:
-       clk_disable(sp->clk);
- err_clk_put:
-@@ -295,6 +301,7 @@ static __devexit int ath79_spi_remove(st
-       struct ath79_spi *sp = platform_get_drvdata(pdev);
- 
-       spi_bitbang_stop(&sp->bitbang);
-+      ath79_spi_disable(sp);
-       clk_disable(sp->clk);
-       clk_put(sp->clk);
-       iounmap(sp->base);