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Device tree changes for v3.9

Browse source 
All around device tree changes destined for v3.8. Aside from the
 documentation updates the highlights in this branch include:
 - Kbuild changes for using CPP with .dts files
 - locking fix from preempt_rt patchset
 - include DT alias names in device uevent
 - Selftest bugfixes and improvements
 - New function for counting phandles stanzas in a property
 - constify argument to of_node_full_name()
 - Various bug fixes
 
 This tree did also contain a commit to use platform_device_add instead
 of open-coding the device add code, but it caused problems with amba
 devices and needed to be reverted.
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Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux

Pull device tree changes from Grant Likely:
 "All around device tree changes destined for v3.8.  Aside from the
  documentation updates the highlights in this branch include:

   - Kbuild changes for using CPP with .dts files
   - locking fix from preempt_rt patchset
   - include DT alias names in device uevent
   - Selftest bugfixes and improvements
   - New function for counting phandles stanzas in a property
   - constify argument to of_node_full_name()
   - Various bug fixes

  This tree did also contain a commit to use platform_device_add instead
  of open-coding the device add code, but it caused problems with amba
  devices and needed to be reverted."

* tag 'dt-for-linus' of git://git.secretlab.ca/git/linux: (23 commits)
  Revert "of: use platform_device_add"
  kbuild: limit dtc+cpp include path
  gpio: Make of_count_named_gpios() use new of_count_phandle_with_args()
  of: Create function for counting number of phandles in a property
  of/base: Clean up exit paths for of_parse_phandle_with_args()
  of/selftest: Use selftest() macro throughout
  of/selftest: Fix GPIOs selftest to cover the 7th case
  of: fix recursive locking in of_get_next_available_child()
  documentation/devicetree: Fix a typo in exynos-dw-mshc.txt
  OF: convert devtree lock from rw_lock to raw spinlock
  of/exynos_g2d: Add Bindings for exynos G2D driver
  kbuild: create a rule to run the pre-processor on *.dts files
  input: Extend matrix-keypad device tree binding
  devicetree: Move NS2 LEDs binding into LEDs directory
  of: use platform_device_add
  powerpc/5200: Fix size to request_mem_region() call
  documentation/devicetree: Fix typos
  of: add 'const' to of_node_full_name parameter
  of: Output devicetree alias names in uevent
  DT: add vendor prefixes for Renesas and Toshiba
  ...
This commit is contained in:
Linus Torvalds 2013-02-20 11:04:46 -08:00
commit b3cdda2b4f
35 changed files with 444 additions and 227 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/spi/spi-fsl-spi.c
View file

@ -947,12 +947,12 @@ static int of_fsl_spi_get_chipselects(struct device *dev)
struct device_node *np = dev->of_node;
struct fsl_spi_platform_data *pdata = dev->platform_data;
struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata);
unsigned int ngpios;
int ngpios;
int i = 0;
int ret;
ngpios = of_gpio_count(np);
if (!ngpios) {
if (ngpios <= 0) {
/*
* SPI w/o chip-select line. One SPI device is still permitted
* though.

8
drivers/spi/spi-oc-tiny.c
View file

@ -54,7 +54,7 @@ struct tiny_spi {
unsigned int txc, rxc;
const u8 *txp;
u8 *rxp;
unsigned int gpio_cs_count;
int gpio_cs_count;
int *gpio_cs;
};
@ -74,7 +74,7 @@ static void tiny_spi_chipselect(struct spi_device *spi, int is_active)
{
struct tiny_spi *hw = tiny_spi_to_hw(spi);
if (hw->gpio_cs_count) {
if (hw->gpio_cs_count > 0) {
gpio_set_value(hw->gpio_cs[spi->chip_select],
(spi->mode & SPI_CS_HIGH) ? is_active : !is_active);
}
@ -254,7 +254,7 @@ static int tiny_spi_of_probe(struct platform_device *pdev)
if (!np)
return 0;
hw->gpio_cs_count = of_gpio_count(np);
if (hw->gpio_cs_count) {
if (hw->gpio_cs_count > 0) {
hw->gpio_cs = devm_kzalloc(&pdev->dev,
hw->gpio_cs_count * sizeof(unsigned int),
GFP_KERNEL);
@ -352,7 +352,7 @@ static int tiny_spi_probe(struct platform_device *pdev)
goto exit_gpio;
gpio_direction_output(hw->gpio_cs[i], 1);
}
hw->bitbang.master->num_chipselect = max(1U, hw->gpio_cs_count);
hw->bitbang.master->num_chipselect = max(1, hw->gpio_cs_count);
/* register our spi controller */
err = spi_bitbang_start(&hw->bitbang);

4
drivers/spi/spi-ppc4xx.c
View file

@ -419,7 +419,7 @@ static int spi_ppc4xx_of_probe(struct platform_device *op)
* This includes both "null" gpio's and real ones.
*/
num_gpios = of_gpio_count(np);
if (num_gpios) {
if (num_gpios > 0) {
int i;
hw->gpios = kzalloc(sizeof(int) * num_gpios, GFP_KERNEL);
@ -471,7 +471,7 @@ static int spi_ppc4xx_of_probe(struct platform_device *op)
SPI_CPHA | SPI_CPOL | SPI_CS_HIGH | SPI_LSB_FIRST;
/* this many pins in all GPIO controllers */
bbp->master->num_chipselect = num_gpios;
bbp->master->num_chipselect = num_gpios > 0 ? num_gpios : 0;
/* Get the clock for the OPB */
opbnp = of_find_compatible_node(NULL, NULL, "ibm,opb");

5
drivers/spi/spi.c
View file

@ -1059,15 +1059,14 @@ EXPORT_SYMBOL_GPL(spi_alloc_master);
#ifdef CONFIG_OF
static int of_spi_register_master(struct spi_master *master)
{
u16 nb;
int i, *cs;
int nb, i, *cs;
struct device_node *np = master->dev.of_node;
if (!np)
return 0;
nb = of_gpio_named_count(np, "cs-gpios");
master->num_chipselect = max(nb, master->num_chipselect);
master->num_chipselect = max(nb, (int)master->num_chipselect);
if (nb < 1)
return 0;