[PATCHv5 1/5] clk: socfpga: stratix10: use new parent data scheme

Dinh Nguyen
2020-04-03T23:54:16Z

Convert, where possible, the stratix10 clock driver to the new parent
data scheme by specifying the parent data for clocks that have multiple
parents.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
---
v5: no changes
v4: no changes
v3: no changes
v2: add fw_name
---
drivers/clk/socfpga/clk-gate-s10.c | 5 +-
drivers/clk/socfpga/clk-periph-s10.c | 10 +-
drivers/clk/socfpga/clk-pll-s10.c | 4 +-
drivers/clk/socfpga/clk-s10.c | 160 ++++++++++++++++++++++-----
drivers/clk/socfpga/stratix10-clk.h | 8 +-
5 files changed, 146 insertions(+), 41 deletions(-)

diff --git a/drivers/clk/socfpga/clk-gate-s10.c b/drivers/clk/socfpga/clk-gate-s10.c
index 8be4722f6064..083b2ec21fdd 100644
--- a/drivers/clk/socfpga/clk-gate-s10.c
+++ b/drivers/clk/socfpga/clk-gate-s10.c
@@ -70,7 +70,6 @@ struct clk *s10_register_gate(const struct stratix10_gate_clock *clks, void __io
struct clk *clk;
struct socfpga_gate_clk *socfpga_clk;
struct clk_init_data init;
- const char * const *parent_names = clks->parent_names;
const char *parent_name = clks->parent_name;

socfpga_clk = kzalloc(sizeof(*socfpga_clk), GFP_KERNEL);
@@ -108,7 +107,9 @@ struct clk *s10_register_gate(const struct stratix10_gate_clock *clks, void __io
init.flags = clks->flags;

init.num_parents = clks->num_parents;
- init.parent_names = parent_names ? parent_names : &parent_name;
+ init.parent_names = parent_name ? &parent_name : NULL;
+ if (init.parent_names == NULL)
+ init.parent_data = clks->parent_data;
socfpga_clk->hw.hw.init = &init;

clk = clk_register(NULL, &socfpga_clk->hw.hw);
diff --git a/drivers/clk/socfpga/clk-periph-s10.c b/drivers/clk/socfpga/clk-periph-s10.c
index dd6d4056e9de..397b77b89b16 100644
--- a/drivers/clk/socfpga/clk-periph-s10.c
+++ b/drivers/clk/socfpga/clk-periph-s10.c
@@ -81,7 +81,6 @@ struct clk *s10_register_periph(const struct stratix10_perip_c_clock *clks,
struct clk_init_data init;
const char *name = clks->name;
const char *parent_name = clks->parent_name;
- const char * const *parent_names = clks->parent_names;

periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
if (WARN_ON(!periph_clk))
@@ -94,7 +93,9 @@ struct clk *s10_register_periph(const struct stratix10_perip_c_clock *clks,
init.flags = clks->flags;

init.num_parents = clks->num_parents;
- init.parent_names = parent_names ? parent_names : &parent_name;
+ init.parent_names = parent_name ? &parent_name : NULL;
+ if (init.parent_names == NULL)
+ init.parent_data = clks->parent_data;

periph_clk->hw.hw.init = &init;

@@ -114,7 +115,6 @@ struct clk *s10_register_cnt_periph(const struct stratix10_perip_cnt_clock *clks
struct clk_init_data init;
const char *name = clks->name;
const char *parent_name = clks->parent_name;
- const char * const *parent_names = clks->parent_names;

periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
if (WARN_ON(!periph_clk))
@@ -137,7 +137,9 @@ struct clk *s10_register_cnt_periph(const struct stratix10_perip_cnt_clock *clks
init.flags = clks->flags;

init.num_parents = clks->num_parents;
- init.parent_names = parent_names ? parent_names : &parent_name;
+ init.parent_names = parent_name ? &parent_name : NULL;
+ if (init.parent_names == NULL)
+ init.parent_data = clks->parent_data;

periph_clk->hw.hw.init = &init;

diff --git a/drivers/clk/socfpga/clk-pll-s10.c b/drivers/clk/socfpga/clk-pll-s10.c
index a301bb22f36c..bcd3f14e9145 100644
--- a/drivers/clk/socfpga/clk-pll-s10.c
+++ b/drivers/clk/socfpga/clk-pll-s10.c
@@ -117,7 +117,6 @@ struct clk *s10_register_pll(const struct stratix10_pll_clock *clks,
struct socfpga_pll *pll_clk;
struct clk_init_data init;
const char *name = clks->name;
- const char * const *parent_names = clks->parent_names;

pll_clk = kzalloc(sizeof(*pll_clk), GFP_KERNEL);
if (WARN_ON(!pll_clk))
@@ -134,7 +133,8 @@ struct clk *s10_register_pll(const struct stratix10_pll_clock *clks,
init.flags = clks->flags;

init.num_parents = clks->num_parents;
- init.parent_names = parent_names;
+ init.parent_names = NULL;
+ init.parent_data = clks->parent_data;
pll_clk->hw.hw.init = &init;

pll_clk->hw.bit_idx = SOCFPGA_PLL_POWER;
diff --git a/drivers/clk/socfpga/clk-s10.c b/drivers/clk/socfpga/clk-s10.c
index dea7c6c7d269..c1dfc9b34e4e 100644
--- a/drivers/clk/socfpga/clk-s10.c
+++ b/drivers/clk/socfpga/clk-s10.c
@@ -12,35 +12,137 @@

#include "stratix10-clk.h"

-static const char * const pll_mux[] = { "osc1", "cb-intosc-hs-div2-clk",
- "f2s-free-clk",};
-static const char * const cntr_mux[] = { "main_pll", "periph_pll",
- "osc1", "cb-intosc-hs-div2-clk",
- "f2s-free-clk"};
-static const char * const boot_mux[] = { "osc1", "cb-intosc-hs-div2-clk",};
-
-static const char * const noc_free_mux[] = {"main_noc_base_clk",
- "peri_noc_base_clk",
- "osc1", "cb-intosc-hs-div2-clk",
- "f2s-free-clk"};
-
-static const char * const emaca_free_mux[] = {"peri_emaca_clk", "boot_clk"};
-static const char * const emacb_free_mux[] = {"peri_emacb_clk", "boot_clk"};
-static const char * const emac_ptp_free_mux[] = {"peri_emac_ptp_clk", "boot_clk"};
-static const char * const gpio_db_free_mux[] = {"peri_gpio_db_clk", "boot_clk"};
-static const char * const sdmmc_free_mux[] = {"main_sdmmc_clk", "boot_clk"};
-static const char * const s2f_usr1_free_mux[] = {"peri_s2f_usr1_clk", "boot_clk"};
-static const char * const psi_ref_free_mux[] = {"peri_psi_ref_clk", "boot_clk"};
-static const char * const mpu_mux[] = { "mpu_free_clk", "boot_clk",};
-
-static const char * const s2f_usr0_mux[] = {"f2s-free-clk", "boot_clk"};
-static const char * const emac_mux[] = {"emaca_free_clk", "emacb_free_clk"};
-static const char * const noc_mux[] = {"noc_free_clk", "boot_clk"};
-
-static const char * const mpu_free_mux[] = {"main_mpu_base_clk",
- "peri_mpu_base_clk",
- "osc1", "cb-intosc-hs-div2-clk",
- "f2s-free-clk"};
+static const struct clk_parent_data pll_mux[] = {
+ { .fw_name = "osc1",
+ .name = "osc1" },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk" },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk" },
+};
+
+static const struct clk_parent_data cntr_mux[] = {
+ { .fw_name = "main_pll",
+ .name = "main_pll", },
+ { .fw_name = "periph_pll",
+ .name = "periph_pll", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data boot_mux[] = {
+ { .fw_name = "osc1",
+ .name = "osc1" },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk" },
+};
+
+static const struct clk_parent_data noc_free_mux[] = {
+ { .fw_name = "main_noc_base_clk",
+ .name = "main_noc_base_clk", },
+ { .fw_name = "peri_noc_base_clk",
+ .name = "peri_noc_base_clk", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data emaca_free_mux[] = {
+ { .fw_name = "peri_emaca_clk",
+ .name = "peri_emaca_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data emacb_free_mux[] = {
+ { .fw_name = "peri_emacb_clk",
+ .name = "peri_emacb_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data emac_ptp_free_mux[] = {
+ { .fw_name = "peri_emac_ptp_clk",
+ .name = "peri_emac_ptp_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data gpio_db_free_mux[] = {
+ { .fw_name = "peri_gpio_db_clk",
+ .name = "peri_gpio_db_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data sdmmc_free_mux[] = {
+ { .fw_name = "main_sdmmc_clk",
+ .name = "main_sdmmc_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data s2f_usr1_free_mux[] = {
+ { .fw_name = "peri_s2f_usr1_clk",
+ .name = "peri_s2f_usr1_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data psi_ref_free_mux[] = {
+ { .fw_name = "peri_psi_ref_clk",
+ .name = "peri_psi_ref_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data mpu_mux[] = {
+ { .fw_name = "mpu_free_clk",
+ .name = "mpu_free_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data s2f_usr0_mux[] = {
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data emac_mux[] = {
+ { .fw_name = "emaca_free_clk",
+ .name = "emaca_free_clk", },
+ { .fw_name = "emacb_free_clk",
+ .name = "emacb_free_clk", },
+};
+
+static const struct clk_parent_data noc_mux[] = {
+ { .fw_name = "noc_free_clk",
+ .name = "noc_free_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data mpu_free_mux[] = {
+ { .fw_name = "main_mpu_base_clk",
+ .name = "main_mpu_base_clk", },
+ { .fw_name = "peri_mpu_base_clk",
+ .name = "peri_mpu_base_clk", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};

/* clocks in AO (always on) controller */
static const struct stratix10_pll_clock s10_pll_clks[] = {
diff --git a/drivers/clk/socfpga/stratix10-clk.h b/drivers/clk/socfpga/stratix10-clk.h
index fcabef42249c..ffbd1fb2c8ef 100644
--- a/drivers/clk/socfpga/stratix10-clk.h
+++ b/drivers/clk/socfpga/stratix10-clk.h
@@ -14,7 +14,7 @@ struct stratix10_clock_data {
struct stratix10_pll_clock {
unsigned int id;
const char *name;
- const char *const *parent_names;
+ const struct clk_parent_data *parent_data;
u8 num_parents;
unsigned long flags;
unsigned long offset;
@@ -24,7 +24,7 @@ struct stratix10_perip_c_clock {
unsigned int id;
const char *name;
const char *parent_name;
- const char *const *parent_names;
+ const struct clk_parent_data *parent_data;
u8 num_parents;
unsigned long flags;
unsigned long offset;
@@ -34,7 +34,7 @@ struct stratix10_perip_cnt_clock {
unsigned int id;
const char *name;
const char *parent_name;
- const char *const *parent_names;
+ const struct clk_parent_data *parent_data;
u8 num_parents;
unsigned long flags;
unsigned long offset;
@@ -47,7 +47,7 @@ struct stratix10_gate_clock {
unsigned int id;
const char *name;
const char *parent_name;
- const char *const *parent_names;
+ const struct clk_parent_data *parent_data;
u8 num_parents;
unsigned long flags;
unsigned long gate_reg;
--
2.25.1