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Subject[RFC/PATCH] ARM: OMAP2+: Add chip_select to ads7846 init
Date
This patch adds the chip_select as parameter to
omap_ads7846_init.
All existing omap2-boards use chip select 0 on
different spi busses. I work on bringing a board
mainline where the ads7846 is connected to
chip select 1. This patch prepares the omap_ads7846_init
function for this board.

Signed-off-by: Thomas Weber <weber@corscience.de>
---
arch/arm/mach-omap2/board-3430sdp.c | 2 +-
arch/arm/mach-omap2/board-cm-t35.c | 2 +-
arch/arm/mach-omap2/board-devkit8000.c | 2 +-
arch/arm/mach-omap2/board-ldp.c | 2 +-
arch/arm/mach-omap2/board-omap3evm.c | 2 +-
arch/arm/mach-omap2/board-omap3pandora.c | 2 +-
arch/arm/mach-omap2/board-omap3stalker.c | 2 +-
arch/arm/mach-omap2/board-omap3touchbook.c | 2 +-
arch/arm/mach-omap2/board-overo.c | 2 +-
arch/arm/mach-omap2/common-board-devices.c | 13 ++++++++-----
arch/arm/mach-omap2/common-board-devices.h | 3 ++-
11 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c
index 77142c1..dec6407 100644
--- a/arch/arm/mach-omap2/board-3430sdp.c
+++ b/arch/arm/mach-omap2/board-3430sdp.c
@@ -710,7 +710,7 @@ static void __init omap_3430sdp_init(void)
gpio_pendown = SDP3430_TS_GPIO_IRQ_SDPV2;
else
gpio_pendown = SDP3430_TS_GPIO_IRQ_SDPV1;
- omap_ads7846_init(1, gpio_pendown, 310, NULL);
+ omap_ads7846_init(1, 0, gpio_pendown, 310, NULL);
board_serial_init();
omap_sdrc_init(hyb18m512160af6_sdrc_params, NULL);
usb_musb_init(NULL);
diff --git a/arch/arm/mach-omap2/board-cm-t35.c b/arch/arm/mach-omap2/board-cm-t35.c
index bd1bcac..3c82640 100644
--- a/arch/arm/mach-omap2/board-cm-t35.c
+++ b/arch/arm/mach-omap2/board-cm-t35.c
@@ -606,7 +606,7 @@ static void __init cm_t3x_common_init(void)
omap_sdrc_init(mt46h32m32lf6_sdrc_params,
mt46h32m32lf6_sdrc_params);
cm_t35_init_i2c();
- omap_ads7846_init(1, CM_T35_GPIO_PENDOWN, 0, NULL);
+ omap_ads7846_init(1, 0, CM_T35_GPIO_PENDOWN, 0, NULL);
cm_t35_init_ethernet();
cm_t35_init_led();
cm_t35_init_display();
diff --git a/arch/arm/mach-omap2/board-devkit8000.c b/arch/arm/mach-omap2/board-devkit8000.c
index 90154e4..669ada3 100644
--- a/arch/arm/mach-omap2/board-devkit8000.c
+++ b/arch/arm/mach-omap2/board-devkit8000.c
@@ -642,7 +642,7 @@ static void __init devkit8000_init(void)

omap_display_init(&devkit8000_dss_data);

- omap_ads7846_init(2, OMAP3_DEVKIT_TS_GPIO, 0, NULL);
+ omap_ads7846_init(2, 0, OMAP3_DEVKIT_TS_GPIO, 0, NULL);

usb_musb_init(NULL);
usbhs_init(&usbhs_bdata);
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index e179da0..0c19262 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -417,7 +417,7 @@ static void __init omap_ldp_init(void)
ldp_init_smsc911x();
omap_i2c_init();
platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
- omap_ads7846_init(1, 54, 310, NULL);
+ omap_ads7846_init(1, 0, 54, 310, NULL);
omap_serial_init();
omap_sdrc_init(NULL, NULL);
usb_musb_init(NULL);
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 2d24e28..57fd2d4 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -661,7 +661,7 @@ static void __init omap3_evm_init(void)
}
usb_musb_init(&musb_board_data);
usbhs_init(&usbhs_bdata);
- omap_ads7846_init(1, OMAP3_EVM_TS_GPIO, 310, NULL);
+ omap_ads7846_init(1, 0, OMAP3_EVM_TS_GPIO, 310, NULL);
omap3evm_init_smsc911x();
omap3_evm_display_init();

diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index f7811f4..9606a51 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -590,7 +590,7 @@ static void __init omap3pandora_init(void)
mt46h32m32lf6_sdrc_params);
spi_register_board_info(omap3pandora_spi_board_info,
ARRAY_SIZE(omap3pandora_spi_board_info));
- omap_ads7846_init(1, OMAP3_PANDORA_TS_GPIO, 0, NULL);
+ omap_ads7846_init(1, 0, OMAP3_PANDORA_TS_GPIO, 0, NULL);
usbhs_init(&usbhs_bdata);
usb_musb_init(NULL);
gpmc_nand_init(&pandora_nand_data);
diff --git a/arch/arm/mach-omap2/board-omap3stalker.c b/arch/arm/mach-omap2/board-omap3stalker.c
index ddb7d66..808e8e6 100644
--- a/arch/arm/mach-omap2/board-omap3stalker.c
+++ b/arch/arm/mach-omap2/board-omap3stalker.c
@@ -436,7 +436,7 @@ static void __init omap3_stalker_init(void)
omap_sdrc_init(mt46h32m32lf6_sdrc_params, NULL);
usb_musb_init(NULL);
usbhs_init(&usbhs_bdata);
- omap_ads7846_init(1, OMAP3_STALKER_TS_GPIO, 310, NULL);
+ omap_ads7846_init(1, 0, OMAP3_STALKER_TS_GPIO, 310, NULL);

omap_mux_init_gpio(21, OMAP_PIN_OUTPUT);
omap_mux_init_gpio(18, OMAP_PIN_INPUT_PULLUP);
diff --git a/arch/arm/mach-omap2/board-omap3touchbook.c b/arch/arm/mach-omap2/board-omap3touchbook.c
index a2d0d19..3821e9a 100644
--- a/arch/arm/mach-omap2/board-omap3touchbook.c
+++ b/arch/arm/mach-omap2/board-omap3touchbook.c
@@ -363,7 +363,7 @@ static void __init omap3_touchbook_init(void)
gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");

/* Touchscreen and accelerometer */
- omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
+ omap_ads7846_init(4, 0, OMAP3_TS_GPIO, 310, &ads7846_pdata);
usb_musb_init(NULL);
usbhs_init(&usbhs_bdata);
omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index 4cf7aea..3323e11 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -105,7 +105,7 @@ static struct platform_device vads7846_device = {

static void __init overo_ads7846_init(void)
{
- omap_ads7846_init(1, OVERO_GPIO_PENDOWN, 0, NULL);
+ omap_ads7846_init(1, 0, OVERO_GPIO_PENDOWN, 0, NULL);
platform_device_register(&vads7846_device);
}

diff --git a/arch/arm/mach-omap2/common-board-devices.c b/arch/arm/mach-omap2/common-board-devices.c
index bcb0c58..a02cca6 100644
--- a/arch/arm/mach-omap2/common-board-devices.c
+++ b/arch/arm/mach-omap2/common-board-devices.c
@@ -51,14 +51,15 @@ static struct ads7846_platform_data ads7846_config = {
static struct spi_board_info ads7846_spi_board_info __initdata = {
.modalias = "ads7846",
.bus_num = -EINVAL,
- .chip_select = 0,
+ .chip_select = -EINVAL,
.max_speed_hz = 1500000,
.controller_data = &ads7846_mcspi_config,
.irq = -EINVAL,
.platform_data = &ads7846_config,
};

-void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
+void __init omap_ads7846_init(int bus_num, int chip_select,
+ int gpio_pendown, int gpio_debounce,
struct ads7846_platform_data *board_pdata)
{
struct spi_board_info *spi_bi = &ads7846_spi_board_info;
@@ -78,8 +79,9 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,

ads7846_config.gpio_pendown = gpio_pendown;

- spi_bi->bus_num = bus_num;
- spi_bi->irq = OMAP_GPIO_IRQ(gpio_pendown);
+ spi_bi->bus_num = bus_num;
+ spi_bi->chip_select = chip_select;
+ spi_bi->irq = OMAP_GPIO_IRQ(gpio_pendown);

if (board_pdata)
spi_bi->platform_data = board_pdata;
@@ -87,7 +89,8 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
spi_register_board_info(&ads7846_spi_board_info, 1);
}
#else
-void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
+void __init omap_ads7846_init(int bus_num, int chip_select,
+ int gpio_pendown, int gpio_debounce,
struct ads7846_platform_data *board_pdata)
{
}
diff --git a/arch/arm/mach-omap2/common-board-devices.h b/arch/arm/mach-omap2/common-board-devices.h
index a0b4a428..784be17 100644
--- a/arch/arm/mach-omap2/common-board-devices.h
+++ b/arch/arm/mach-omap2/common-board-devices.h
@@ -8,7 +8,8 @@
struct mtd_partition;
struct ads7846_platform_data;

-void omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
+void omap_ads7846_init(int bus_num, int chip_select,
+ int gpio_pendown, int gpio_debounce,
struct ads7846_platform_data *board_pdata);
void omap_nand_flash_init(int opts, struct mtd_partition *parts, int n_parts);

--
1.7.7.1


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