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-rw-r--r--arch/arm/mach-omap2/Makefile4
-rw-r--r--arch/arm/mach-omap2/board-rx51-peripherals.c9
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_3xxx_data.c104
-rw-r--r--arch/arm/mach-omap2/ssi.c78
4 files changed, 195 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index d4f671547c37..ace860ded36f 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -222,6 +222,10 @@ ifneq ($(CONFIG_DRM_OMAP),)
obj-y += drm.o
endif
+# Synchronous Serial Interface (SSI)
+omap-ssi-$(CONFIG_OMAP_SSI) := ssi.o
+obj-y += $(omap-ssi-m) $(omap-ssi-y)
+
# Specific board support
obj-$(CONFIG_MACH_OMAP_GENERIC) += board-generic.o
obj-$(CONFIG_MACH_OMAP_H4) += board-h4.o
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index 9c2dd102fbbb..e870a4ea5233 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -27,6 +27,7 @@
#include <linux/power/isp1704_charger.h>
#include <linux/platform_data/spi-omap2-mcspi.h>
#include <linux/platform_data/mtd-onenand-omap2.h>
+#include <linux/platform_data/hsi-omap-ssi.h>
#include <asm/system_info.h>
@@ -73,6 +74,8 @@
#define LIS302_IRQ1_GPIO 181
#define LIS302_IRQ2_GPIO 180 /* Not yet in use */
+#define RX51_CAWAKE_GPIO 151
+
/* List all SPI devices here. Note that the list/probe order seems to matter! */
enum {
RX51_SPI_WL1251,
@@ -265,6 +268,11 @@ static struct spi_board_info rx51_peripherals_spi_board_info[] __initdata = {
},
};
+static struct omap_ssi_board_config ssi_board_config = {
+ .num_ports = 1,
+ .cawake_gpio = { RX51_CAWAKE_GPIO },
+};
+
static struct platform_device rx51_battery_device = {
.name = "rx51-battery",
.id = -1,
@@ -1295,6 +1303,7 @@ void __init rx51_peripherals_init(void)
if (partition)
omap_hsmmc_init(mmc);
+ omap_ssi_config(&ssi_board_config);
rx51_charger_init();
rx51_init_twl4030_hwmon();
}
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 0c3a427da544..d6d365a6e3da 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -3693,6 +3693,109 @@ static struct omap_hwmod_ocp_if omap3xxx_l4_core__aes = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
+/*
+ * 'ssi' class
+ * synchronous serial interface (multichannel and full-duplex serial if)
+ */
+
+static struct omap_hwmod_class_sysconfig omap34xx_ssi_sysc = {
+ .rev_offs = 0x0000,
+ .sysc_offs = 0x0010,
+ .syss_offs = 0x0014,
+ .sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_EMUFREE |
+ SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE |
+ SYSC_HAS_SOFTRESET | SYSS_HAS_RESET_STATUS),
+ .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
+ SIDLE_SMART_WKUP | MSTANDBY_FORCE | MSTANDBY_NO |
+ MSTANDBY_SMART | MSTANDBY_SMART_WKUP),
+ .sysc_fields = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap34xx_ssi_hwmod_class = {
+ .name = "ssi",
+ .sysc = &omap34xx_ssi_sysc,
+};
+
+static struct omap_hwmod_irq_info omap34xx_ssi_irqs[] = {
+ { .name = "ssi_p1_mpu_irq0", .irq = 67 },
+ { .name = "ssi_p1_mpu_irq1", .irq = 68 },
+ { .name = "ssi_p2_mpu_irq0", .irq = 69 },
+ { .name = "ssi_p2_mpu_irq1", .irq = 70 },
+ { .name = "ssi_gdd_mpu", .irq = 71 },
+ { .irq = -1 },
+};
+
+static struct omap_hwmod_addr_space omap34xx_ssi_addrs[] = {
+ {
+ .name = "sys",
+ .pa_start = 0x48058000,
+ .pa_end = 0x48058fff,
+ .flags = ADDR_TYPE_RT,
+ },
+ {
+ /* generic distributed DMA */
+ .name = "gdd",
+ .pa_start = 0x48059000,
+ .pa_end = 0x48059fff,
+ .flags = ADDR_TYPE_RT,
+ },
+ {
+ /* port 1: synchronous serial transmitter */
+ .name = "p1_sst",
+ .pa_start = 0x4805a000,
+ .pa_end = 0x4805a7ff,
+ .flags = ADDR_TYPE_RT,
+ },
+ {
+ /* port 1: synchronous serial receiver */
+ .name = "p1_ssr",
+ .pa_start = 0x4805a800,
+ .pa_end = 0x4805afff,
+ .flags = ADDR_TYPE_RT,
+ },
+ {
+ /* port 2: synchronous serial transmitter */
+ .name = "p2_sst",
+ .pa_start = 0x4805b000,
+ .pa_end = 0x4805b7ff,
+ .flags = ADDR_TYPE_RT,
+ },
+ {
+ /* port 2: synchronous serial receiver */
+ .name = "p2_ssr",
+ .pa_start = 0x4805b800,
+ .pa_end = 0x4805bfff,
+ .flags = ADDR_TYPE_RT,
+ },
+ {}
+};
+
+static struct omap_hwmod omap34xx_ssi_hwmod = {
+ .name = "ssi",
+ .class = &omap34xx_ssi_hwmod_class,
+ .clkdm_name = "l3_init_clkdm",
+ .mpu_irqs = omap34xx_ssi_irqs,
+ .main_clk = "ssi_ssr_fck",
+ .prcm = {
+ .omap2 = {
+ .prcm_reg_id = 1,
+ .module_bit = OMAP3430_EN_SSI_SHIFT,
+ .module_offs = WKUP_MOD,
+ .idlest_reg_id = 1,
+ .idlest_idle_bit = OMAP3430ES2_ST_SSI_IDLE_SHIFT,
+ },
+ },
+};
+
+/* SSI -> l3 */
+static struct omap_hwmod_ocp_if omap34xx_l3__ssi = {
+ .master = &omap34xx_ssi_hwmod,
+ .slave = &omap3xxx_l3_main_hwmod,
+ .clk = "ssi_ick",
+ .addr = omap34xx_ssi_addrs,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
static struct omap_hwmod_ocp_if *omap3xxx_hwmod_ocp_ifs[] __initdata = {
&omap3xxx_l3_main__l4_core,
&omap3xxx_l3_main__l4_per,
@@ -3818,6 +3921,7 @@ static struct omap_hwmod_ocp_if *omap34xx_hwmod_ocp_ifs[] __initdata = {
#ifdef CONFIG_OMAP_IOMMU_IVA2
&omap3xxx_l3_main__mmu_iva,
#endif
+ &omap34xx_l3__ssi,
NULL
};
diff --git a/arch/arm/mach-omap2/ssi.c b/arch/arm/mach-omap2/ssi.c
new file mode 100644
index 000000000000..adf342dd20c7
--- /dev/null
+++ b/arch/arm/mach-omap2/ssi.c
@@ -0,0 +1,78 @@
+/*
+ * linux/arch/arm/mach-omap2/ssi.c
+ *
+ * Copyright (C) 2010 Nokia Corporation. All rights reserved.
+ *
+ * Contact: Carlos Chinea <carlos.chinea@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/hsi-omap-ssi.h>
+#include "omap-pm.h"
+
+static struct omap_ssi_platform_data ssi_pdata = {
+ .num_ports = SSI_NUM_PORTS,
+ .cawake_gpio = {0},
+ .get_dev_context_loss_count = omap_pm_get_dev_context_loss_count,
+};
+
+static struct platform_device ssi_pdev = {
+ .name = "omap_ssi",
+ .id = 0,
+ .dev = {
+ .platform_data = &ssi_pdata,
+ },
+};
+
+int __init omap_ssi_config(struct omap_ssi_board_config *ssi_config)
+{
+ unsigned int port, offset, cawake_gpio;
+ int err;
+
+ ssi_pdata.num_ports = ssi_config->num_ports;
+
+ for (port = 0, offset = 7; port < ssi_config->num_ports; port++, offset += 5) {
+ cawake_gpio = ssi_config->cawake_gpio[port];
+ if (!cawake_gpio)
+ continue; /* Nothing to do */
+ err = gpio_request(cawake_gpio, "cawake");
+ if (err < 0)
+ goto rback;
+ gpio_direction_input(cawake_gpio);
+
+ ssi_pdata.cawake_gpio[port] = ssi_config->cawake_gpio[port];
+ }
+
+ return 0;
+
+rback:
+ dev_err(&ssi_pdev.dev, "Request cawake (gpio%d) failed\n", cawake_gpio);
+ while (port > 0)
+ gpio_free(ssi_config->cawake_gpio[--port]);
+
+ return err;
+}
+
+static int __init ssi_init(void)
+{
+ return platform_device_register(&ssi_pdev);
+}
+subsys_initcall(ssi_init);
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-02 13:52:28 +0000