Add OMAP2420 DMA hwmod data and also add required
DMA device attributes.
Signed-off-by: G, Manjunath Kondaiah <manjugk@xxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Cc: Tony Lindgren <tony@xxxxxxxxxxx>
Cc: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
Cc: Benoit Cousson <b-cousson@xxxxxx>
---
arch/arm/mach-omap2/omap_hwmod_2420_data.c | 87 ++++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/dma.h | 11 ++++
2 files changed, 98 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod_2420_data.c b/arch/arm/mach-omap2/omap_hwmod_2420_data.c
index a1a3dd6..81aa0d9 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2420_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2420_data.c
@@ -38,6 +38,7 @@ static struct omap_hwmod omap2420_iva_hwmod;
static struct omap_hwmod omap2420_l3_main_hwmod;
static struct omap_hwmod omap2420_l4_core_hwmod;
static struct omap_hwmod omap2420_wd_timer2_hwmod;
+static struct omap_hwmod omap2420_dma_system_hwmod;
/* L3 -> L4_CORE interface */
static struct omap_hwmod_ocp_if omap2420_l3_main__l4_core = {
@@ -557,6 +558,89 @@ static struct omap_hwmod omap2420_i2c2_hwmod = {
.flags = HWMOD_16BIT_REG,
};
+/* system dma */
+static struct omap_hwmod_class_sysconfig omap2420_dma_sysc = {
+ .rev_offs = 0x0000,
+ .sysc_offs = 0x002c,
+ .syss_offs = 0x0028,
+ .sysc_flags = (SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET |
+ SYSC_HAS_MIDLEMODE | SYSC_HAS_CLOCKACTIVITY |
+ SYSC_HAS_EMUFREE | SYSC_HAS_AUTOIDLE),
+ .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
+ MSTANDBY_FORCE | MSTANDBY_NO | MSTANDBY_SMART),
+ .sysc_fields = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap2420_dma_hwmod_class = {
+ .name = "dma",
+ .sysc = &omap2420_dma_sysc,
+};
+
+/* dma attributes */
+static struct omap_dma_dev_attr dma_dev_attr = {
+ .dev_caps = RESERVE_CHANNEL | DMA_LINKED_LCH | GLOBAL_PRIORITY |
+ IS_CSSA_32 | IS_CDSA_32,
+ .lch_count = 32,
+};
+
+static struct omap_hwmod_irq_info omap2420_dma_system_irqs[] = {
+ { .name = "0", .irq = 12 }, /* INT_24XX_SDMA_IRQ0 */
+ { .name = "1", .irq = 13 }, /* INT_24XX_SDMA_IRQ1 */
+ { .name = "2", .irq = 14 }, /* INT_24XX_SDMA_IRQ2 */
+ { .name = "3", .irq = 15 }, /* INT_24XX_SDMA_IRQ3 */
+};
+
+static struct omap_hwmod_addr_space omap2420_dma_system_addrs[] = {
+ {
+ .pa_start = 0x48056000,
+ .pa_end = 0x4a0560ff,
+ .flags = ADDR_TYPE_RT
+ },
+};
+
+/* dma_system -> L3 */
+static struct omap_hwmod_ocp_if omap2420_dma_system__l3 = {
+ .master = &omap2420_dma_system_hwmod,
+ .slave = &omap2420_l3_main_hwmod,
+ .clk = "l3_div_ck",
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* dma_system master ports */
+static struct omap_hwmod_ocp_if *omap2420_dma_system_masters[] = {
+ &omap2420_dma_system__l3,
+};
+
+/* l4_cfg -> dma_system */
+static struct omap_hwmod_ocp_if omap2420_l4_core__dma_system = {
+ .master = &omap2420_l4_core_hwmod,
+ .slave = &omap2420_dma_system_hwmod,
+ .clk = "l4_div_ck",
+ .addr = omap2420_dma_system_addrs,
+ .addr_cnt = ARRAY_SIZE(omap2420_dma_system_addrs),
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* dma_system slave ports */
+static struct omap_hwmod_ocp_if *omap2420_dma_system_slaves[] = {
+ &omap2420_l4_core__dma_system,
+};
+
+static struct omap_hwmod omap2420_dma_system_hwmod = {
+ .name = "dma",
+ .class = &omap2420_dma_hwmod_class,
+ .mpu_irqs = omap2420_dma_system_irqs,
+ .mpu_irqs_cnt = ARRAY_SIZE(omap2420_dma_system_irqs),
+ .main_clk = "l3_div_ck",
+ .slaves = omap2420_dma_system_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap2420_dma_system_slaves),
+ .masters = omap2420_dma_system_masters,
+ .masters_cnt = ARRAY_SIZE(omap2420_dma_system_masters),
+ .dev_attr = &dma_dev_attr,
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420),
+ .flags = HWMOD_NO_IDLEST,
+};
+
static __initdata struct omap_hwmod *omap2420_hwmods[] = {
&omap2420_l3_main_hwmod,
&omap2420_l4_core_hwmod,
@@ -569,6 +653,9 @@ static __initdata struct omap_hwmod *omap2420_hwmods[] = {
&omap2420_uart3_hwmod,
&omap2420_i2c1_hwmod,
&omap2420_i2c2_hwmod,
+
+ /* dma_system class*/
+ &omap2420_dma_system_hwmod,
NULL,
};
diff --git a/arch/arm/plat-omap/include/plat/dma.h b/arch/arm/plat-omap/include/plat/dma.h
index 2378399..c466566 100644
--- a/arch/arm/plat-omap/include/plat/dma.h
+++ b/arch/arm/plat-omap/include/plat/dma.h
@@ -295,6 +295,13 @@
#define DMA_ERRATA_3_3 BIT(0x5)
#define DMA_ROMCODE_BUG BIT(0x6)
+/* Attributes for OMAP DMA Contrller */
+#define DMA_LINKED_LCH BIT(0x0)
+#define GLOBAL_PRIORITY BIT(0x1)
+#define RESERVE_CHANNEL BIT(0x2)
+#define IS_CSSA_32 BIT(0x3)
+#define IS_CDSA_32 BIT(0x4)
+
enum omap_reg_offsets {
GCR, GSCR, GRST1, HW_ID,
@@ -389,6 +396,10 @@ struct omap_dma_channel_params {
#endif
};
+struct omap_dma_dev_attr {
+ u32 dev_caps;
+ u16 lch_count;
+};
extern void omap_set_dma_priority(int lch, int dst_port, int priority);
extern int omap_request_dma(int dev_id, const char *dev_name,
--
1.7.1
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