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Subject[PATCH 78/90] ARM: OMAP: TSC2101: add platform init / registration to board files
Date
From: Imre Deak <imre.deak@solidboot.com>

H2 / H3 boards use this chip, update their board files.

Signed-off-by: Imre Deak <imre.deak@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
arch/arm/mach-omap1/board-h2.c | 77 +++++++++++++++++++++++++++++++++++
arch/arm/mach-omap1/board-h3.c | 88 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 165 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap1/board-h2.c b/arch/arm/mach-omap1/board-h2.c
index d97ff63..4438390 100644
--- a/arch/arm/mach-omap1/board-h2.c
+++ b/arch/arm/mach-omap1/board-h2.c
@@ -28,6 +28,9 @@
#include <linux/mtd/partitions.h>
#include <linux/input.h>
#include <linux/workqueue.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/tsc2101.h>
+#include <linux/clk.h>

#include <asm/hardware.h>
#include <asm/mach-types.h>
@@ -297,6 +300,78 @@ static struct platform_device h2_lcd_device = {
.id = -1,
};

+struct {
+ struct clk *mclk;
+ int initialized;
+} h2_tsc2101;
+
+#define TSC2101_MUX_MCLK_ON R10_1610_MCLK_ON
+#define TSC2101_MUX_MCLK_OFF R10_1610_MCLK_OFF
+
+static int h2_tsc2101_init(struct spi_device *spi)
+{
+ int r;
+
+ if (h2_tsc2101.initialized) {
+ printk(KERN_ERR "tsc2101: already initialized\n");
+ return -ENODEV;
+ }
+
+ /* Get the MCLK */
+ h2_tsc2101.mclk = clk_get(&spi->dev, "mclk");
+ if (IS_ERR(h2_tsc2101.mclk)) {
+ dev_err(&spi->dev, "unable to get the clock MCLK\n");
+ return PTR_ERR(h2_tsc2101.mclk);
+ }
+ if ((r = clk_set_rate(h2_tsc2101.mclk, 12000000)) < 0) {
+ dev_err(&spi->dev, "unable to set rate to the MCLK\n");
+ goto err;
+ }
+
+ omap_cfg_reg(TSC2101_MUX_MCLK_OFF);
+ omap_cfg_reg(N15_1610_UWIRE_CS1);
+
+ return 0;
+err:
+ clk_put(h2_tsc2101.mclk);
+ return r;
+}
+
+static void h2_tsc2101_cleanup(struct spi_device *spi)
+{
+ clk_put(h2_tsc2101.mclk);
+ omap_cfg_reg(TSC2101_MUX_MCLK_OFF);
+}
+
+static void h2_tsc2101_enable_mclk(struct spi_device *spi)
+{
+ omap_cfg_reg(TSC2101_MUX_MCLK_ON);
+ clk_enable(h2_tsc2101.mclk);
+}
+
+static void h2_tsc2101_disable_mclk(struct spi_device *spi)
+{
+ clk_disable(h2_tsc2101.mclk);
+ omap_cfg_reg(R10_1610_MCLK_OFF);
+}
+
+static struct tsc2101_platform_data h2_tsc2101_platform_data = {
+ .init = h2_tsc2101_init,
+ .cleanup = h2_tsc2101_cleanup,
+ .enable_mclk = h2_tsc2101_enable_mclk,
+ .disable_mclk = h2_tsc2101_disable_mclk,
+};
+
+static struct spi_board_info h2_spi_board_info[] __initdata = {
+ [0] = {
+ .modalias = "tsc2101",
+ .bus_num = 2,
+ .chip_select = 1,
+ .max_speed_hz = 16000000,
+ .platform_data = &h2_tsc2101_platform_data,
+ },
+};
+
static struct omap_mcbsp_reg_cfg mcbsp_regs = {
.spcr2 = FREE | FRST | GRST | XRST | XINTM(3),
.spcr1 = RINTM(3) | RRST,
@@ -443,6 +518,8 @@ static void __init h2_init(void)
#endif

platform_add_devices(h2_devices, ARRAY_SIZE(h2_devices));
+ spi_register_board_info(h2_spi_board_info,
+ ARRAY_SIZE(h2_spi_board_info));
omap_board_config = h2_config;
omap_board_config_size = ARRAY_SIZE(h2_config);
omap_serial_init();
diff --git a/arch/arm/mach-omap1/board-h3.c b/arch/arm/mach-omap1/board-h3.c
index 4167f34..5ff9037 100644
--- a/arch/arm/mach-omap1/board-h3.c
+++ b/arch/arm/mach-omap1/board-h3.c
@@ -25,6 +25,9 @@
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/input.h>
+#include <linux/clk.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/tsc2101.h>

#include <asm/setup.h>
#include <asm/page.h>
@@ -371,6 +374,89 @@ static struct platform_device h3_lcd_device = {
.id = -1,
};

+struct {
+ struct clk *mclk;
+ int initialized;
+} h3_tsc2101;
+
+#define TSC2101_MUX_MCLK_ON V5_1710_MCLK_ON
+#define TSC2101_MUX_MCLK_OFF V5_1710_MCLK_OFF
+
+static int h3_tsc2101_init(struct spi_device *spi)
+{
+ u8 io_exp_val;
+ int r;
+
+ if (h3_tsc2101.initialized) {
+ printk(KERN_ERR "tsc2101: already initialized\n");
+ return -ENODEV;
+ }
+
+ /* Get the MCLK */
+ h3_tsc2101.mclk = clk_get(&spi->dev, "mclk");
+ if (IS_ERR(h3_tsc2101.mclk)) {
+ dev_err(&spi->dev, "unable to get the clock MCLK\n");
+ return PTR_ERR(h3_tsc2101.mclk);
+ }
+ if ((r = clk_set_rate(h3_tsc2101.mclk, 12000000)) < 0) {
+ dev_err(&spi->dev, "unable to set rate to the MCLK\n");
+ goto err;
+ }
+
+ if ((r = read_gpio_expa(&io_exp_val, 0x24))) {
+ dev_err(&spi->dev, "error reading from I/O EXPANDER\n");
+ goto err;
+ }
+ io_exp_val |= 0x8;
+ if ((r = write_gpio_expa(io_exp_val, 0x24))) {
+ dev_err(&spi->dev, "error writing to I/O EXPANDER\n");
+ goto err;
+ }
+
+ omap_cfg_reg(N14_1610_UWIRE_CS0);
+ omap_cfg_reg(TSC2101_MUX_MCLK_OFF);
+
+ return 0;
+err:
+ clk_put(h3_tsc2101.mclk);
+ return r;
+}
+
+static void h3_tsc2101_cleanup(struct spi_device *spi)
+{
+ clk_put(h3_tsc2101.mclk);
+ omap_cfg_reg(TSC2101_MUX_MCLK_OFF);
+}
+
+static void h3_tsc2101_enable_mclk(struct spi_device *spi)
+{
+ omap_cfg_reg(TSC2101_MUX_MCLK_ON);
+ clk_enable(h3_tsc2101.mclk);
+}
+
+static void h3_tsc2101_disable_mclk(struct spi_device *spi)
+{
+ clk_disable(h3_tsc2101.mclk);
+ omap_cfg_reg(R10_1610_MCLK_OFF);
+}
+
+static struct tsc2101_platform_data h3_tsc2101_platform_data = {
+ .init = h3_tsc2101_init,
+ .cleanup = h3_tsc2101_cleanup,
+ .enable_mclk = h3_tsc2101_enable_mclk,
+ .disable_mclk = h3_tsc2101_disable_mclk,
+};
+
+static struct spi_board_info h3_spi_board_info[] __initdata = {
+ [0] = {
+ .modalias = "tsc2101",
+ .bus_num = 2,
+ .chip_select = 0,
+ .max_speed_hz = 16000000,
+ .platform_data = &h3_tsc2101_platform_data,
+ },
+};
+
static struct omap_mcbsp_reg_cfg mcbsp_regs = {
.spcr2 = FREE | FRST | GRST | XRST | XINTM(3),
.spcr1 = RINTM(3) | RRST,
@@ -484,6 +570,8 @@ static void __init h3_init(void)
omap_cfg_reg(V2_1710_GPIO10);

platform_add_devices(devices, ARRAY_SIZE(devices));
+ spi_register_board_info(h3_spi_board_info,
+ ARRAY_SIZE(h3_spi_board_info));
omap_board_config = h3_config;
omap_board_config_size = ARRAY_SIZE(h3_config);
omap_serial_init();
--
1.4.4.2
-
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