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-rw-r--r--drivers/bus/ti-sysc.c256
1 files changed, 246 insertions, 10 deletions
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index c3c76a1..0c9b9bc 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -18,6 +18,9 @@
#include <linux/pm_runtime.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
+#include <linux/platform_data/ti-sysc.h>
+
+#include <dt-bindings/bus/ti-sysc.h>
enum sysc_registers {
SYSC_REVISION,
@@ -45,6 +48,8 @@ static const char * const clock_names[] = { "fck", "ick", };
* @offsets: register offsets from module base
* @clocks: clocks used by the interconnect target module
* @legacy_mode: configured for legacy mode if set
+ * @cap: interconnect target module capabilities
+ * @cfg: interconnect target module configuration
*/
struct sysc {
struct device *dev;
@@ -54,6 +59,8 @@ struct sysc {
int offsets[SYSC_MAX_REGS];
struct clk *clocks[SYSC_MAX_CLOCKS];
const char *legacy_mode;
+ const struct sysc_capabilities *cap;
+ struct sysc_config cfg;
};
static u32 sysc_read_revision(struct sysc *ddata)
@@ -474,6 +481,228 @@ static void sysc_unprepare(struct sysc *ddata)
}
}
+/*
+ * Common sysc register bits found on omap2, also known as type1
+ */
+static const struct sysc_regbits sysc_regbits_omap2 = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = 12,
+ .sidle_shift = 3,
+ .clkact_shift = 8,
+ .emufree_shift = 5,
+ .enwkup_shift = 2,
+ .srst_shift = 1,
+ .autoidle_shift = 0,
+};
+
+static const struct sysc_capabilities sysc_omap2 = {
+ .type = TI_SYSC_OMAP2,
+ .sysc_mask = SYSC_OMAP2_CLOCKACTIVITY | SYSC_OMAP2_EMUFREE |
+ SYSC_OMAP2_ENAWAKEUP | SYSC_OMAP2_SOFTRESET |
+ SYSC_OMAP2_AUTOIDLE,
+ .regbits = &sysc_regbits_omap2,
+};
+
+/* All omap2 and 3 timers, and timers 1, 2 & 10 on omap 4 and 5 */
+static const struct sysc_capabilities sysc_omap2_timer = {
+ .type = TI_SYSC_OMAP2_TIMER,
+ .sysc_mask = SYSC_OMAP2_CLOCKACTIVITY | SYSC_OMAP2_EMUFREE |
+ SYSC_OMAP2_ENAWAKEUP | SYSC_OMAP2_SOFTRESET |
+ SYSC_OMAP2_AUTOIDLE,
+ .regbits = &sysc_regbits_omap2,
+ .mod_quirks = SYSC_QUIRK_USE_CLOCKACT,
+};
+
+/*
+ * SHAM2 (SHA1/MD5) sysc found on omap3, a variant of sysc_regbits_omap2
+ * with different sidle position
+ */
+static const struct sysc_regbits sysc_regbits_omap3_sham = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = -ENODEV,
+ .sidle_shift = 4,
+ .clkact_shift = -ENODEV,
+ .enwkup_shift = -ENODEV,
+ .srst_shift = 1,
+ .autoidle_shift = 0,
+ .emufree_shift = -ENODEV,
+};
+
+static const struct sysc_capabilities sysc_omap3_sham = {
+ .type = TI_SYSC_OMAP3_SHAM,
+ .sysc_mask = SYSC_OMAP2_SOFTRESET | SYSC_OMAP2_AUTOIDLE,
+ .regbits = &sysc_regbits_omap3_sham,
+};
+
+/*
+ * AES register bits found on omap3 and later, a variant of
+ * sysc_regbits_omap2 with different sidle position
+ */
+static const struct sysc_regbits sysc_regbits_omap3_aes = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = -ENODEV,
+ .sidle_shift = 6,
+ .clkact_shift = -ENODEV,
+ .enwkup_shift = -ENODEV,
+ .srst_shift = 1,
+ .autoidle_shift = 0,
+ .emufree_shift = -ENODEV,
+};
+
+static const struct sysc_capabilities sysc_omap3_aes = {
+ .type = TI_SYSC_OMAP3_AES,
+ .sysc_mask = SYSC_OMAP2_SOFTRESET | SYSC_OMAP2_AUTOIDLE,
+ .regbits = &sysc_regbits_omap3_aes,
+};
+
+/*
+ * Common sysc register bits found on omap4, also known as type2
+ */
+static const struct sysc_regbits sysc_regbits_omap4 = {
+ .dmadisable_shift = 16,
+ .midle_shift = 4,
+ .sidle_shift = 2,
+ .clkact_shift = -ENODEV,
+ .enwkup_shift = -ENODEV,
+ .emufree_shift = 1,
+ .srst_shift = 0,
+ .autoidle_shift = -ENODEV,
+};
+
+static const struct sysc_capabilities sysc_omap4 = {
+ .type = TI_SYSC_OMAP4,
+ .sysc_mask = SYSC_OMAP4_DMADISABLE | SYSC_OMAP4_FREEEMU |
+ SYSC_OMAP4_SOFTRESET,
+ .regbits = &sysc_regbits_omap4,
+};
+
+static const struct sysc_capabilities sysc_omap4_timer = {
+ .type = TI_SYSC_OMAP4_TIMER,
+ .sysc_mask = SYSC_OMAP4_DMADISABLE | SYSC_OMAP4_FREEEMU |
+ SYSC_OMAP4_SOFTRESET,
+ .regbits = &sysc_regbits_omap4,
+};
+
+/*
+ * Common sysc register bits found on omap4, also known as type3
+ */
+static const struct sysc_regbits sysc_regbits_omap4_simple = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = 2,
+ .sidle_shift = 0,
+ .clkact_shift = -ENODEV,
+ .enwkup_shift = -ENODEV,
+ .srst_shift = -ENODEV,
+ .emufree_shift = -ENODEV,
+ .autoidle_shift = -ENODEV,
+};
+
+static const struct sysc_capabilities sysc_omap4_simple = {
+ .type = TI_SYSC_OMAP4_SIMPLE,
+ .regbits = &sysc_regbits_omap4_simple,
+};
+
+/*
+ * SmartReflex sysc found on omap34xx
+ */
+static const struct sysc_regbits sysc_regbits_omap34xx_sr = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = -ENODEV,
+ .sidle_shift = -ENODEV,
+ .clkact_shift = 20,
+ .enwkup_shift = -ENODEV,
+ .srst_shift = -ENODEV,
+ .emufree_shift = -ENODEV,
+ .autoidle_shift = -ENODEV,
+};
+
+static const struct sysc_capabilities sysc_34xx_sr = {
+ .type = TI_SYSC_OMAP34XX_SR,
+ .sysc_mask = SYSC_OMAP2_CLOCKACTIVITY,
+ .regbits = &sysc_regbits_omap34xx_sr,
+ .mod_quirks = SYSC_QUIRK_USE_CLOCKACT | SYSC_QUIRK_UNCACHED,
+};
+
+/*
+ * SmartReflex sysc found on omap36xx and later
+ */
+static const struct sysc_regbits sysc_regbits_omap36xx_sr = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = -ENODEV,
+ .sidle_shift = 24,
+ .clkact_shift = -ENODEV,
+ .enwkup_shift = 26,
+ .srst_shift = -ENODEV,
+ .emufree_shift = -ENODEV,
+ .autoidle_shift = -ENODEV,
+};
+
+static const struct sysc_capabilities sysc_36xx_sr = {
+ .type = TI_SYSC_OMAP36XX_SR,
+ .sysc_mask = SYSC_OMAP2_ENAWAKEUP,
+ .regbits = &sysc_regbits_omap36xx_sr,
+ .mod_quirks = SYSC_QUIRK_UNCACHED,
+};
+
+static const struct sysc_capabilities sysc_omap4_sr = {
+ .type = TI_SYSC_OMAP4_SR,
+ .regbits = &sysc_regbits_omap36xx_sr,
+};
+
+/*
+ * McASP register bits found on omap4 and later
+ */
+static const struct sysc_regbits sysc_regbits_omap4_mcasp = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = -ENODEV,
+ .sidle_shift = 0,
+ .clkact_shift = -ENODEV,
+ .enwkup_shift = -ENODEV,
+ .srst_shift = -ENODEV,
+ .emufree_shift = -ENODEV,
+ .autoidle_shift = -ENODEV,
+};
+
+static const struct sysc_capabilities sysc_omap4_mcasp = {
+ .type = TI_SYSC_OMAP4_MCASP,
+ .regbits = &sysc_regbits_omap4_mcasp,
+};
+
+/*
+ * FS USB host found on omap4 and later
+ */
+static const struct sysc_regbits sysc_regbits_omap4_usb_host_fs = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = -ENODEV,
+ .sidle_shift = 24,
+ .clkact_shift = -ENODEV,
+ .enwkup_shift = 26,
+ .srst_shift = -ENODEV,
+ .emufree_shift = -ENODEV,
+ .autoidle_shift = -ENODEV,
+};
+
+static const struct sysc_capabilities sysc_omap4_usb_host_fs = {
+ .type = TI_SYSC_OMAP4_USB_HOST_FS,
+ .sysc_mask = SYSC_OMAP2_ENAWAKEUP,
+ .regbits = &sysc_regbits_omap4_usb_host_fs,
+};
+
+static int sysc_init_match(struct sysc *ddata)
+{
+ const struct sysc_capabilities *cap;
+
+ cap = of_device_get_match_data(ddata->dev);
+ if (!cap)
+ return -EINVAL;
+
+ ddata->cap = cap;
+ if (ddata->cap)
+ ddata->cfg.quirks |= ddata->cap->mod_quirks;
+
+ return 0;
+}
+
static int sysc_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -487,6 +716,10 @@ static int sysc_probe(struct platform_device *pdev)
ddata->dev = &pdev->dev;
ddata->legacy_mode = of_get_property(np, "ti,hwmods", NULL);
+ error = sysc_init_match(ddata);
+ if (error)
+ return error;
+
error = sysc_get_clocks(ddata);
if (error)
return error;
@@ -554,16 +787,19 @@ unprepare:
}
static const struct of_device_id sysc_match[] = {
- { .compatible = "ti,sysc-omap2" },
- { .compatible = "ti,sysc-omap4" },
- { .compatible = "ti,sysc-omap4-simple" },
- { .compatible = "ti,sysc-omap3430-sr" },
- { .compatible = "ti,sysc-omap3630-sr" },
- { .compatible = "ti,sysc-omap4-sr" },
- { .compatible = "ti,sysc-omap3-sham" },
- { .compatible = "ti,sysc-omap-aes" },
- { .compatible = "ti,sysc-mcasp" },
- { .compatible = "ti,sysc-usb-host-fs" },
+ { .compatible = "ti,sysc-omap2", .data = &sysc_omap2, },
+ { .compatible = "ti,sysc-omap2-timer", .data = &sysc_omap2_timer, },
+ { .compatible = "ti,sysc-omap4", .data = &sysc_omap4, },
+ { .compatible = "ti,sysc-omap4-timer", .data = &sysc_omap4_timer, },
+ { .compatible = "ti,sysc-omap4-simple", .data = &sysc_omap4_simple, },
+ { .compatible = "ti,sysc-omap3430-sr", .data = &sysc_34xx_sr, },
+ { .compatible = "ti,sysc-omap3630-sr", .data = &sysc_36xx_sr, },
+ { .compatible = "ti,sysc-omap4-sr", .data = &sysc_omap4_sr, },
+ { .compatible = "ti,sysc-omap3-sham", .data = &sysc_omap3_sham, },
+ { .compatible = "ti,sysc-omap-aes", .data = &sysc_omap3_aes, },
+ { .compatible = "ti,sysc-mcasp", .data = &sysc_omap4_mcasp, },
+ { .compatible = "ti,sysc-usb-host-fs",
+ .data = &sysc_omap4_usb_host_fs, },
{ },
};
MODULE_DEVICE_TABLE(of, sysc_match);
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