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Message-Id: <20230607-topic-amlogic-upstream-clkid-public-migration-v1-2-9676afa6b22c@linaro.org>
Date: Wed, 07 Jun 2023 12:56:13 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Jerome Brunet <jbrunet@...libre.com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Kevin Hilman <khilman@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-amlogic@...ts.infradead.org, linux-clk@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH 02/18] clk: meson: migrate meson-aoclk out of
hw_onecell_data to drop NR_CLKS
The way hw_onecell_data is declared:
struct clk_hw_onecell_data {
unsigned int num;
struct clk_hw *hws[];
};
makes it impossible to have the clk_hw table declared outside while
using ARRAY_SIZE() to determine ".num" due to ".hws" being a flexible
array member.
Completely move out of hw_onecell_data and add a custom
devm_of_clk_add_hw_provider() "get" callback to retrieve the clk_hw
from the meson_aoclk_data struct to finally get rid on the
NR_CLKS define.
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
drivers/clk/meson/axg-aoclk.c | 42 +++++++++++++-------------
drivers/clk/meson/axg-aoclk.h | 2 --
drivers/clk/meson/g12a-aoclk.c | 66 ++++++++++++++++++++---------------------
drivers/clk/meson/g12a-aoclk.h | 2 --
drivers/clk/meson/gxbb-aoclk.c | 8 ++---
drivers/clk/meson/gxbb-aoclk.h | 2 --
drivers/clk/meson/meson-aoclk.c | 22 ++++++++++----
drivers/clk/meson/meson-aoclk.h | 3 +-
8 files changed, 74 insertions(+), 73 deletions(-)
diff --git a/drivers/clk/meson/axg-aoclk.c b/drivers/clk/meson/axg-aoclk.c
index af6db437bcd8..db5b53146bcc 100644
--- a/drivers/clk/meson/axg-aoclk.c
+++ b/drivers/clk/meson/axg-aoclk.c
@@ -288,27 +288,24 @@ static struct clk_regmap *axg_aoclk_regmap[] = {
&axg_aoclk_saradc_gate,
};
-static const struct clk_hw_onecell_data axg_aoclk_onecell_data = {
- .hws = {
- [CLKID_AO_REMOTE] = &axg_aoclk_remote.hw,
- [CLKID_AO_I2C_MASTER] = &axg_aoclk_i2c_master.hw,
- [CLKID_AO_I2C_SLAVE] = &axg_aoclk_i2c_slave.hw,
- [CLKID_AO_UART1] = &axg_aoclk_uart1.hw,
- [CLKID_AO_UART2] = &axg_aoclk_uart2.hw,
- [CLKID_AO_IR_BLASTER] = &axg_aoclk_ir_blaster.hw,
- [CLKID_AO_SAR_ADC] = &axg_aoclk_saradc.hw,
- [CLKID_AO_CLK81] = &axg_aoclk_clk81.hw,
- [CLKID_AO_SAR_ADC_SEL] = &axg_aoclk_saradc_mux.hw,
- [CLKID_AO_SAR_ADC_DIV] = &axg_aoclk_saradc_div.hw,
- [CLKID_AO_SAR_ADC_CLK] = &axg_aoclk_saradc_gate.hw,
- [CLKID_AO_CTS_OSCIN] = &axg_aoclk_cts_oscin.hw,
- [CLKID_AO_32K_PRE] = &axg_aoclk_32k_pre.hw,
- [CLKID_AO_32K_DIV] = &axg_aoclk_32k_div.hw,
- [CLKID_AO_32K_SEL] = &axg_aoclk_32k_sel.hw,
- [CLKID_AO_32K] = &axg_aoclk_32k.hw,
- [CLKID_AO_CTS_RTC_OSCIN] = &axg_aoclk_cts_rtc_oscin.hw,
- },
- .num = NR_CLKS,
+static struct clk_hw *axg_aoclk_hw_clks[] = {
+ [CLKID_AO_REMOTE] = &axg_aoclk_remote.hw,
+ [CLKID_AO_I2C_MASTER] = &axg_aoclk_i2c_master.hw,
+ [CLKID_AO_I2C_SLAVE] = &axg_aoclk_i2c_slave.hw,
+ [CLKID_AO_UART1] = &axg_aoclk_uart1.hw,
+ [CLKID_AO_UART2] = &axg_aoclk_uart2.hw,
+ [CLKID_AO_IR_BLASTER] = &axg_aoclk_ir_blaster.hw,
+ [CLKID_AO_SAR_ADC] = &axg_aoclk_saradc.hw,
+ [CLKID_AO_CLK81] = &axg_aoclk_clk81.hw,
+ [CLKID_AO_SAR_ADC_SEL] = &axg_aoclk_saradc_mux.hw,
+ [CLKID_AO_SAR_ADC_DIV] = &axg_aoclk_saradc_div.hw,
+ [CLKID_AO_SAR_ADC_CLK] = &axg_aoclk_saradc_gate.hw,
+ [CLKID_AO_CTS_OSCIN] = &axg_aoclk_cts_oscin.hw,
+ [CLKID_AO_32K_PRE] = &axg_aoclk_32k_pre.hw,
+ [CLKID_AO_32K_DIV] = &axg_aoclk_32k_div.hw,
+ [CLKID_AO_32K_SEL] = &axg_aoclk_32k_sel.hw,
+ [CLKID_AO_32K] = &axg_aoclk_32k.hw,
+ [CLKID_AO_CTS_RTC_OSCIN] = &axg_aoclk_cts_rtc_oscin.hw,
};
static const struct meson_aoclk_data axg_aoclkc_data = {
@@ -317,7 +314,8 @@ static const struct meson_aoclk_data axg_aoclkc_data = {
.reset = axg_aoclk_reset,
.num_clks = ARRAY_SIZE(axg_aoclk_regmap),
.clks = axg_aoclk_regmap,
- .hw_data = &axg_aoclk_onecell_data,
+ .hw_clks = axg_aoclk_hw_clks,
+ .hw_clk_num = ARRAY_SIZE(axg_aoclk_hw_clks),
};
static const struct of_device_id axg_aoclkc_match_table[] = {
diff --git a/drivers/clk/meson/axg-aoclk.h b/drivers/clk/meson/axg-aoclk.h
index 3cc27e85170f..fe23dc53aa73 100644
--- a/drivers/clk/meson/axg-aoclk.h
+++ b/drivers/clk/meson/axg-aoclk.h
@@ -10,8 +10,6 @@
#ifndef __AXG_AOCLKC_H
#define __AXG_AOCLKC_H
-#define NR_CLKS 17
-
#include <dt-bindings/clock/axg-aoclkc.h>
#include <dt-bindings/reset/axg-aoclkc.h>
diff --git a/drivers/clk/meson/g12a-aoclk.c b/drivers/clk/meson/g12a-aoclk.c
index b52990e574d2..52501ec709f7 100644
--- a/drivers/clk/meson/g12a-aoclk.c
+++ b/drivers/clk/meson/g12a-aoclk.c
@@ -411,39 +411,36 @@ static struct clk_regmap *g12a_aoclk_regmap[] = {
&g12a_aoclk_saradc_gate,
};
-static const struct clk_hw_onecell_data g12a_aoclk_onecell_data = {
- .hws = {
- [CLKID_AO_AHB] = &g12a_aoclk_ahb.hw,
- [CLKID_AO_IR_IN] = &g12a_aoclk_ir_in.hw,
- [CLKID_AO_I2C_M0] = &g12a_aoclk_i2c_m0.hw,
- [CLKID_AO_I2C_S0] = &g12a_aoclk_i2c_s0.hw,
- [CLKID_AO_UART] = &g12a_aoclk_uart.hw,
- [CLKID_AO_PROD_I2C] = &g12a_aoclk_prod_i2c.hw,
- [CLKID_AO_UART2] = &g12a_aoclk_uart2.hw,
- [CLKID_AO_IR_OUT] = &g12a_aoclk_ir_out.hw,
- [CLKID_AO_SAR_ADC] = &g12a_aoclk_saradc.hw,
- [CLKID_AO_MAILBOX] = &g12a_aoclk_mailbox.hw,
- [CLKID_AO_M3] = &g12a_aoclk_m3.hw,
- [CLKID_AO_AHB_SRAM] = &g12a_aoclk_ahb_sram.hw,
- [CLKID_AO_RTI] = &g12a_aoclk_rti.hw,
- [CLKID_AO_M4_FCLK] = &g12a_aoclk_m4_fclk.hw,
- [CLKID_AO_M4_HCLK] = &g12a_aoclk_m4_hclk.hw,
- [CLKID_AO_CLK81] = &g12a_aoclk_clk81.hw,
- [CLKID_AO_SAR_ADC_SEL] = &g12a_aoclk_saradc_mux.hw,
- [CLKID_AO_SAR_ADC_DIV] = &g12a_aoclk_saradc_div.hw,
- [CLKID_AO_SAR_ADC_CLK] = &g12a_aoclk_saradc_gate.hw,
- [CLKID_AO_CTS_OSCIN] = &g12a_aoclk_cts_oscin.hw,
- [CLKID_AO_32K_PRE] = &g12a_aoclk_32k_by_oscin_pre.hw,
- [CLKID_AO_32K_DIV] = &g12a_aoclk_32k_by_oscin_div.hw,
- [CLKID_AO_32K_SEL] = &g12a_aoclk_32k_by_oscin_sel.hw,
- [CLKID_AO_32K] = &g12a_aoclk_32k_by_oscin.hw,
- [CLKID_AO_CEC_PRE] = &g12a_aoclk_cec_pre.hw,
- [CLKID_AO_CEC_DIV] = &g12a_aoclk_cec_div.hw,
- [CLKID_AO_CEC_SEL] = &g12a_aoclk_cec_sel.hw,
- [CLKID_AO_CEC] = &g12a_aoclk_cec.hw,
- [CLKID_AO_CTS_RTC_OSCIN] = &g12a_aoclk_cts_rtc_oscin.hw,
- },
- .num = NR_CLKS,
+static struct clk_hw *g12a_aoclk_hw_clks[] = {
+ [CLKID_AO_AHB] = &g12a_aoclk_ahb.hw,
+ [CLKID_AO_IR_IN] = &g12a_aoclk_ir_in.hw,
+ [CLKID_AO_I2C_M0] = &g12a_aoclk_i2c_m0.hw,
+ [CLKID_AO_I2C_S0] = &g12a_aoclk_i2c_s0.hw,
+ [CLKID_AO_UART] = &g12a_aoclk_uart.hw,
+ [CLKID_AO_PROD_I2C] = &g12a_aoclk_prod_i2c.hw,
+ [CLKID_AO_UART2] = &g12a_aoclk_uart2.hw,
+ [CLKID_AO_IR_OUT] = &g12a_aoclk_ir_out.hw,
+ [CLKID_AO_SAR_ADC] = &g12a_aoclk_saradc.hw,
+ [CLKID_AO_MAILBOX] = &g12a_aoclk_mailbox.hw,
+ [CLKID_AO_M3] = &g12a_aoclk_m3.hw,
+ [CLKID_AO_AHB_SRAM] = &g12a_aoclk_ahb_sram.hw,
+ [CLKID_AO_RTI] = &g12a_aoclk_rti.hw,
+ [CLKID_AO_M4_FCLK] = &g12a_aoclk_m4_fclk.hw,
+ [CLKID_AO_M4_HCLK] = &g12a_aoclk_m4_hclk.hw,
+ [CLKID_AO_CLK81] = &g12a_aoclk_clk81.hw,
+ [CLKID_AO_SAR_ADC_SEL] = &g12a_aoclk_saradc_mux.hw,
+ [CLKID_AO_SAR_ADC_DIV] = &g12a_aoclk_saradc_div.hw,
+ [CLKID_AO_SAR_ADC_CLK] = &g12a_aoclk_saradc_gate.hw,
+ [CLKID_AO_CTS_OSCIN] = &g12a_aoclk_cts_oscin.hw,
+ [CLKID_AO_32K_PRE] = &g12a_aoclk_32k_by_oscin_pre.hw,
+ [CLKID_AO_32K_DIV] = &g12a_aoclk_32k_by_oscin_div.hw,
+ [CLKID_AO_32K_SEL] = &g12a_aoclk_32k_by_oscin_sel.hw,
+ [CLKID_AO_32K] = &g12a_aoclk_32k_by_oscin.hw,
+ [CLKID_AO_CEC_PRE] = &g12a_aoclk_cec_pre.hw,
+ [CLKID_AO_CEC_DIV] = &g12a_aoclk_cec_div.hw,
+ [CLKID_AO_CEC_SEL] = &g12a_aoclk_cec_sel.hw,
+ [CLKID_AO_CEC] = &g12a_aoclk_cec.hw,
+ [CLKID_AO_CTS_RTC_OSCIN] = &g12a_aoclk_cts_rtc_oscin.hw,
};
static const struct meson_aoclk_data g12a_aoclkc_data = {
@@ -452,7 +449,8 @@ static const struct meson_aoclk_data g12a_aoclkc_data = {
.reset = g12a_aoclk_reset,
.num_clks = ARRAY_SIZE(g12a_aoclk_regmap),
.clks = g12a_aoclk_regmap,
- .hw_data = &g12a_aoclk_onecell_data,
+ .hw_clks = g12a_aoclk_hw_clks,
+ .hw_clk_num = ARRAY_SIZE(g12a_aoclk_hw_clks),
};
static const struct of_device_id g12a_aoclkc_match_table[] = {
diff --git a/drivers/clk/meson/g12a-aoclk.h b/drivers/clk/meson/g12a-aoclk.h
index a67c8a7cd7c4..077bd25b94a1 100644
--- a/drivers/clk/meson/g12a-aoclk.h
+++ b/drivers/clk/meson/g12a-aoclk.h
@@ -24,8 +24,6 @@
#define CLKID_AO_CEC_DIV 25
#define CLKID_AO_CEC_SEL 26
-#define NR_CLKS 29
-
#include <dt-bindings/clock/g12a-aoclkc.h>
#include <dt-bindings/reset/g12a-aoclkc.h>
diff --git a/drivers/clk/meson/gxbb-aoclk.c b/drivers/clk/meson/gxbb-aoclk.c
index fce95cf89836..b08f60f5a73d 100644
--- a/drivers/clk/meson/gxbb-aoclk.c
+++ b/drivers/clk/meson/gxbb-aoclk.c
@@ -252,8 +252,7 @@ static struct clk_regmap *gxbb_aoclk[] = {
&ao_cts_cec,
};
-static const struct clk_hw_onecell_data gxbb_aoclk_onecell_data = {
- .hws = {
+static struct clk_hw *gxbb_aoclk_hw_clks[] = {
[CLKID_AO_REMOTE] = &remote_ao.hw,
[CLKID_AO_I2C_MASTER] = &i2c_master_ao.hw,
[CLKID_AO_I2C_SLAVE] = &i2c_slave_ao.hw,
@@ -268,8 +267,6 @@ static const struct clk_hw_onecell_data gxbb_aoclk_onecell_data = {
[CLKID_AO_32K] = &ao_32k.hw,
[CLKID_AO_CTS_RTC_OSCIN] = &ao_cts_rtc_oscin.hw,
[CLKID_AO_CLK81] = &ao_clk81.hw,
- },
- .num = NR_CLKS,
};
static const struct meson_aoclk_data gxbb_aoclkc_data = {
@@ -278,7 +275,8 @@ static const struct meson_aoclk_data gxbb_aoclkc_data = {
.reset = gxbb_aoclk_reset,
.num_clks = ARRAY_SIZE(gxbb_aoclk),
.clks = gxbb_aoclk,
- .hw_data = &gxbb_aoclk_onecell_data,
+ .hw_clks = gxbb_aoclk_hw_clks,
+ .hw_clk_num = ARRAY_SIZE(gxbb_aoclk_hw_clks),
};
static const struct of_device_id gxbb_aoclkc_match_table[] = {
diff --git a/drivers/clk/meson/gxbb-aoclk.h b/drivers/clk/meson/gxbb-aoclk.h
index 1db16f9b37d4..94197b957512 100644
--- a/drivers/clk/meson/gxbb-aoclk.h
+++ b/drivers/clk/meson/gxbb-aoclk.h
@@ -7,8 +7,6 @@
#ifndef __GXBB_AOCLKC_H
#define __GXBB_AOCLKC_H
-#define NR_CLKS 14
-
#include <dt-bindings/clock/gxbb-aoclkc.h>
#include <dt-bindings/reset/gxbb-aoclkc.h>
diff --git a/drivers/clk/meson/meson-aoclk.c b/drivers/clk/meson/meson-aoclk.c
index 434cd8f9de82..3515144aaee5 100644
--- a/drivers/clk/meson/meson-aoclk.c
+++ b/drivers/clk/meson/meson-aoclk.c
@@ -33,6 +33,19 @@ static const struct reset_control_ops meson_aoclk_reset_ops = {
.reset = meson_aoclk_do_reset,
};
+static struct clk_hw *meson_aoclkc_hw_get(struct of_phandle_args *clkspec, void *clk_data)
+{
+ const struct meson_aoclk_data *data = clk_data;
+ unsigned int idx = clkspec->args[0];
+
+ if (idx >= data->hw_clk_num) {
+ pr_err("%s: invalid index %u\n", __func__, idx);
+ return ERR_PTR(-EINVAL);
+ }
+
+ return data->hw_clks[idx];
+}
+
int meson_aoclkc_probe(struct platform_device *pdev)
{
struct meson_aoclk_reset_controller *rstc;
@@ -75,19 +88,18 @@ int meson_aoclkc_probe(struct platform_device *pdev)
data->clks[clkid]->map = regmap;
/* Register all clks */
- for (clkid = 0; clkid < data->hw_data->num; clkid++) {
- if (!data->hw_data->hws[clkid])
+ for (clkid = 0; clkid < data->hw_clk_num; clkid++) {
+ if (!data->hw_clks[clkid])
continue;
- ret = devm_clk_hw_register(dev, data->hw_data->hws[clkid]);
+ ret = devm_clk_hw_register(dev, data->hw_clks[clkid]);
if (ret) {
dev_err(dev, "Clock registration failed\n");
return ret;
}
}
- return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
- (void *) data->hw_data);
+ return devm_of_clk_add_hw_provider(dev, meson_aoclkc_hw_get, data);
}
EXPORT_SYMBOL_GPL(meson_aoclkc_probe);
MODULE_LICENSE("GPL v2");
diff --git a/drivers/clk/meson/meson-aoclk.h b/drivers/clk/meson/meson-aoclk.h
index 605b43855a69..4b7dda9c997d 100644
--- a/drivers/clk/meson/meson-aoclk.h
+++ b/drivers/clk/meson/meson-aoclk.h
@@ -24,7 +24,8 @@ struct meson_aoclk_data {
const unsigned int *reset;
const int num_clks;
struct clk_regmap **clks;
- const struct clk_hw_onecell_data *hw_data;
+ struct clk_hw **hw_clks;
+ unsigned int hw_clk_num;
};
struct meson_aoclk_reset_controller {
--
2.34.1
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