The TWL6030 has similar clocks, so add support for it. Take care of the
resource grouping handling needed.
Signed-off-by: Andreas Kemnade <andreas@xxxxxxxxxxxx>
---
drivers/clk/Kconfig | 2 +-
drivers/clk/clk-twl.c | 52 +++++++++++++++++++++++++++++++++++--------
2 files changed, 44 insertions(+), 10 deletions(-)
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 299bc678ed1b..82ec12f9b82c 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -291,7 +291,7 @@ config CLK_TWL
help
Enable support for controlling the clock resources on TWL family
PMICs. These devices have some 32K clock outputs which can be
- controlled by software. For now, only the TWL6032 clocks are
+ controlled by software. For now, the TWL6032 and TWL6030 clocks are
supported.
config CLK_TWL6040
diff --git a/drivers/clk/clk-twl.c b/drivers/clk/clk-twl.c
index 1d684b358401..20bc3bf8fd62 100644
--- a/drivers/clk/clk-twl.c
+++ b/drivers/clk/clk-twl.c
@@ -11,13 +11,29 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
-#define VREG_STATE 2
+#define VREG_STATE 2
+#define VREG_GRP 0
#define TWL6030_CFG_STATE_OFF 0x00
#define TWL6030_CFG_STATE_ON 0x01
#define TWL6030_CFG_STATE_MASK 0x03
+#define TWL6030_CFG_STATE_GRP_SHIFT 5
+#define TWL6030_CFG_STATE_APP_SHIFT 2
+#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
+#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
+ TWL6030_CFG_STATE_APP_SHIFT)
+#define P1_GRP BIT(0) /* processor power group */
+#define P2_GRP BIT(1)
+#define P3_GRP BIT(2)
+#define ALL_GRP (P1_GRP | P2_GRP | P3_GRP)
+
+enum twl_type {
+ TWL_TYPE_6030,
+ TWL_TYPE_6032,
+};
struct twl_clock_info {
struct device *dev;
+ enum twl_type type;
u8 base;
struct clk_hw hw;
};
@@ -56,14 +72,21 @@ static unsigned long twl_clks_recalc_rate(struct clk_hw *hw,
static int twl6032_clks_prepare(struct clk_hw *hw)
{
struct twl_clock_info *cinfo = to_twl_clks_info(hw);
- int ret;
- ret = twlclk_write(cinfo, TWL_MODULE_PM_RECEIVER, VREG_STATE,
- TWL6030_CFG_STATE_ON);
- if (ret < 0)
- dev_err(cinfo->dev, "clk prepare failed\n");
+ if (cinfo->type == TWL_TYPE_6030) {
+ int grp;
+
+ grp = twlclk_read(cinfo, TWL_MODULE_PM_RECEIVER, VREG_GRP);
+ if (grp < 0)
+ return grp;
- return ret;
+ return twlclk_write(cinfo, TWL_MODULE_PM_RECEIVER, VREG_STATE,
+ grp << TWL6030_CFG_STATE_GRP_SHIFT |
+ TWL6030_CFG_STATE_ON);
+ }
+
+ return twlclk_write(cinfo, TWL_MODULE_PM_RECEIVER, VREG_STATE,
+ TWL6030_CFG_STATE_ON);
}
static void twl6032_clks_unprepare(struct clk_hw *hw)
@@ -71,8 +94,14 @@ static void twl6032_clks_unprepare(struct clk_hw *hw)
struct twl_clock_info *cinfo = to_twl_clks_info(hw);
int ret;
- ret = twlclk_write(cinfo, TWL_MODULE_PM_RECEIVER, VREG_STATE,
- TWL6030_CFG_STATE_OFF);
+ if (cinfo->type == TWL_TYPE_6030)
+ ret = twlclk_write(cinfo, TWL_MODULE_PM_RECEIVER, VREG_STATE,
+ ALL_GRP << TWL6030_CFG_STATE_GRP_SHIFT |
+ TWL6030_CFG_STATE_OFF);
+ else
+ ret = twlclk_write(cinfo, TWL_MODULE_PM_RECEIVER, VREG_STATE,
+ TWL6030_CFG_STATE_OFF);
+
if (ret < 0)
dev_err(cinfo->dev, "clk unprepare failed\n");
}
@@ -138,6 +167,7 @@ static int twl_clks_probe(struct platform_device *pdev)
for (i = 0; i < count; i++) {
cinfo[i].base = hw_data[i].base;
cinfo[i].dev = &pdev->dev;
+ cinfo[i].type = platform_get_device_id(pdev)->driver_data;
cinfo[i].hw.init = &hw_data[i].init;
ret = devm_clk_hw_register(&pdev->dev, &cinfo[i].hw);
if (ret) {
@@ -159,7 +189,11 @@ static int twl_clks_probe(struct platform_device *pdev)
static const struct platform_device_id twl_clks_id[] = {
{
+ .name = "twl6030-clk",
+ .driver_data = TWL_TYPE_6030,
+ }, {
.name = "twl6032-clk",
+ .driver_data = TWL_TYPE_6032,
}, {
/* sentinel */
}
--
2.39.5
