Add a few more clocks the clk_sandbox clock provider and get them using the managed API. Make sure they are released when the device is removed.
Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com ---
arch/sandbox/dts/test.dts | 6 ++-- arch/sandbox/include/asm/clk.h | 33 +++++++++++++++++ drivers/clk/clk_sandbox.c | 34 ++++++++++++++++++ drivers/clk/clk_sandbox_test.c | 66 +++++++++++++++++++++++++++++----- test/dm/clk.c | 36 ++++++++++++++++++- 5 files changed, 163 insertions(+), 12 deletions(-)
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 27b0baab27..25c238d8e5 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -228,8 +228,10 @@ compatible = "sandbox,clk-test"; clocks = <&clk_fixed>, <&clk_sandbox 1>, - <&clk_sandbox 0>; - clock-names = "fixed", "i2c", "spi"; + <&clk_sandbox 0>, + <&clk_sandbox 3>, + <&clk_sandbox 2>; + clock-names = "fixed", "i2c", "spi", "uart2", "uart1"; };
ccf: clk-ccf { diff --git a/arch/sandbox/include/asm/clk.h b/arch/sandbox/include/asm/clk.h index 2b1c49f783..1573e4a134 100644 --- a/arch/sandbox/include/asm/clk.h +++ b/arch/sandbox/include/asm/clk.h @@ -19,6 +19,8 @@ struct udevice; enum sandbox_clk_id { SANDBOX_CLK_ID_SPI, SANDBOX_CLK_ID_I2C, + SANDBOX_CLK_ID_UART1, + SANDBOX_CLK_ID_UART2,
SANDBOX_CLK_ID_COUNT, }; @@ -33,10 +35,15 @@ enum sandbox_clk_test_id { SANDBOX_CLK_TEST_ID_FIXED, SANDBOX_CLK_TEST_ID_SPI, SANDBOX_CLK_TEST_ID_I2C, + SANDBOX_CLK_TEST_ID_DEVM1, + SANDBOX_CLK_TEST_ID_DEVM2, + SANDBOX_CLK_TEST_ID_DEVM_NULL,
SANDBOX_CLK_TEST_ID_COUNT, };
+#define SANDBOX_CLK_TEST_NON_DEVM_COUNT SANDBOX_CLK_TEST_ID_DEVM1 + /** * sandbox_clk_query_rate - Query the current rate of a sandbox clock. * @@ -53,6 +60,14 @@ ulong sandbox_clk_query_rate(struct udevice *dev, int id); * @return: The rate of the clock. */ int sandbox_clk_query_enable(struct udevice *dev, int id); +/** + * sandbox_clk_query_requested - Query the requested state of a sandbox clock. + * + * @dev: The sandbox clock provider device. + * @id: The clock to query. + * @return: The rate of the clock. + */ +int sandbox_clk_query_requested(struct udevice *dev, int id);
/** * sandbox_clk_test_get - Ask the sandbox clock test device to request its @@ -62,6 +77,16 @@ int sandbox_clk_query_enable(struct udevice *dev, int id); * @return: 0 if OK, or a negative error code. */ int sandbox_clk_test_get(struct udevice *dev); + +/** + * sandbox_clk_test_devm_get - Ask the sandbox clock test device to request its + * clocks using the managed API. + * + * @dev: The sandbox clock test (client) devivce. + * @return: 0 if OK, or a negative error code. + */ +int sandbox_clk_test_devm_get(struct udevice *dev); + /** * sandbox_clk_test_get_bulk - Ask the sandbox clock test device to request its * clocks with the bulk clk API. @@ -146,5 +171,13 @@ int sandbox_clk_test_release_bulk(struct udevice *dev); * @return: 0 if OK, or a negative error code. */ int sandbox_clk_test_valid(struct udevice *dev); +/** + * sandbox_clk_test_valid - Ask the sandbox clock test device to check its + * clocks are valid. + * + * @dev: The sandbox clock test (client) devivce. + * @return: 0 if OK, or a negative error code. + */ +struct clk *sandbox_clk_test_get_devm_clk(struct udevice *dev, int id);
#endif diff --git a/drivers/clk/clk_sandbox.c b/drivers/clk/clk_sandbox.c index 1d5cbb589a..d152fd7e5b 100644 --- a/drivers/clk/clk_sandbox.c +++ b/drivers/clk/clk_sandbox.c @@ -12,6 +12,7 @@ struct sandbox_clk_priv { ulong rate[SANDBOX_CLK_ID_COUNT]; bool enabled[SANDBOX_CLK_ID_COUNT]; + bool requested[SANDBOX_CLK_ID_COUNT]; };
static ulong sandbox_clk_get_rate(struct clk *clk) @@ -65,11 +66,35 @@ static int sandbox_clk_disable(struct clk *clk) return 0; }
+static int sandbox_clk_request(struct clk *clk) +{ + struct sandbox_clk_priv *priv = dev_get_priv(clk->dev); + + if (clk->id >= SANDBOX_CLK_ID_COUNT) + return -EINVAL; + + priv->requested[clk->id] = true; + return 0; +} + +static int sandbox_clk_free(struct clk *clk) +{ + struct sandbox_clk_priv *priv = dev_get_priv(clk->dev); + + if (clk->id >= SANDBOX_CLK_ID_COUNT) + return -EINVAL; + + priv->requested[clk->id] = false; + return 0; +} + static struct clk_ops sandbox_clk_ops = { .get_rate = sandbox_clk_get_rate, .set_rate = sandbox_clk_set_rate, .enable = sandbox_clk_enable, .disable = sandbox_clk_disable, + .request = sandbox_clk_request, + .free = sandbox_clk_free, };
static const struct udevice_id sandbox_clk_ids[] = { @@ -104,3 +129,12 @@ int sandbox_clk_query_enable(struct udevice *dev, int id)
return priv->enabled[id]; } + +int sandbox_clk_query_requested(struct udevice *dev, int id) +{ + struct sandbox_clk_priv *priv = dev_get_priv(dev); + + if (id < 0 || id >= SANDBOX_CLK_ID_COUNT) + return -EINVAL; + return priv->requested[id]; +} diff --git a/drivers/clk/clk_sandbox_test.c b/drivers/clk/clk_sandbox_test.c index e8465dbfad..41954660ea 100644 --- a/drivers/clk/clk_sandbox_test.c +++ b/drivers/clk/clk_sandbox_test.c @@ -9,7 +9,8 @@ #include <asm/clk.h>
struct sandbox_clk_test { - struct clk clks[SANDBOX_CLK_TEST_ID_COUNT]; + struct clk clks[SANDBOX_CLK_TEST_NON_DEVM_COUNT]; + struct clk *clkps[SANDBOX_CLK_TEST_ID_COUNT]; struct clk_bulk bulk; };
@@ -24,7 +25,7 @@ int sandbox_clk_test_get(struct udevice *dev) struct sandbox_clk_test *sbct = dev_get_priv(dev); int i, ret;
- for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) { + for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) { ret = clk_get_by_name(dev, sandbox_clk_test_names[i], &sbct->clks[i]); if (ret) @@ -34,6 +35,37 @@ int sandbox_clk_test_get(struct udevice *dev) return 0; }
+int sandbox_clk_test_devm_get(struct udevice *dev) +{ + struct sandbox_clk_test *sbct = dev_get_priv(dev); + struct clk *clk; + + clk = devm_clk_get(dev, "no-an-existing-clock"); + if (!IS_ERR(clk)) { + dev_err(dev, "devm_clk_get() should have failed\n"); + return -EINVAL; + } + + clk = devm_clk_get(dev, "uart2"); + if (IS_ERR(clk)) + return PTR_ERR(clk); + sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1] = clk; + + clk = devm_clk_get_optional(dev, "uart1"); + if (IS_ERR(clk)) + return PTR_ERR(clk); + sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM2] = clk; + + sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM_NULL] = NULL; + clk = devm_clk_get_optional(dev, "not_an_existing_clock"); + if (IS_ERR(clk)) + return PTR_ERR(clk); + if (clk) + return -EINVAL; + + return 0; +} + int sandbox_clk_test_get_bulk(struct udevice *dev) { struct sandbox_clk_test *sbct = dev_get_priv(dev); @@ -48,7 +80,7 @@ ulong sandbox_clk_test_get_rate(struct udevice *dev, int id) if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT) return -EINVAL;
- return clk_get_rate(&sbct->clks[id]); + return clk_get_rate(sbct->clkps[id]); }
ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate) @@ -58,7 +90,7 @@ ulong sandbox_clk_test_set_rate(struct udevice *dev, int id, ulong rate) if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT) return -EINVAL;
- return clk_set_rate(&sbct->clks[id], rate); + return clk_set_rate(sbct->clkps[id], rate); }
int sandbox_clk_test_enable(struct udevice *dev, int id) @@ -68,7 +100,7 @@ int sandbox_clk_test_enable(struct udevice *dev, int id) if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT) return -EINVAL;
- return clk_enable(&sbct->clks[id]); + return clk_enable(sbct->clkps[id]); }
int sandbox_clk_test_enable_bulk(struct udevice *dev) @@ -85,7 +117,7 @@ int sandbox_clk_test_disable(struct udevice *dev, int id) if (id < 0 || id >= SANDBOX_CLK_TEST_ID_COUNT) return -EINVAL;
- return clk_disable(&sbct->clks[id]); + return clk_disable(sbct->clkps[id]); }
int sandbox_clk_test_disable_bulk(struct udevice *dev) @@ -100,7 +132,8 @@ int sandbox_clk_test_free(struct udevice *dev) struct sandbox_clk_test *sbct = dev_get_priv(dev); int i, ret;
- for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) { + devm_clk_put(dev, sbct->clkps[SANDBOX_CLK_TEST_ID_DEVM1]); + for (i = 0; i < SANDBOX_CLK_TEST_NON_DEVM_COUNT; i++) { ret = clk_free(&sbct->clks[i]); if (ret) return ret; @@ -122,13 +155,27 @@ int sandbox_clk_test_valid(struct udevice *dev) int i;
for (i = 0; i < SANDBOX_CLK_TEST_ID_COUNT; i++) { - if (!clk_valid(&sbct->clks[i])) - return -EINVAL; + if (!clk_valid(sbct->clkps[i])) + if (i != SANDBOX_CLK_TEST_ID_DEVM_NULL) + return -EINVAL; }
return 0; }
+static int sandbox_clk_test_probe(struct udevice *dev) +{ + struct sandbox_clk_test *sbct = dev_get_priv(dev); + int i; + + for (i = 0; i < SANDBOX_CLK_TEST_ID_DEVM1; i++) + sbct->clkps[i] = &sbct->clks[i]; + for (i = SANDBOX_CLK_TEST_ID_DEVM1; i < SANDBOX_CLK_TEST_ID_COUNT; i++) + sbct->clkps[i] = NULL; + + return 0; +} + static const struct udevice_id sandbox_clk_test_ids[] = { { .compatible = "sandbox,clk-test" }, { } @@ -138,5 +185,6 @@ U_BOOT_DRIVER(sandbox_clk_test) = { .name = "sandbox_clk_test", .id = UCLASS_MISC, .of_match = sandbox_clk_test_ids, + .probe = sandbox_clk_test_probe, .priv_auto_alloc_size = sizeof(struct sandbox_clk_test), }; diff --git a/test/dm/clk.c b/test/dm/clk.c index 676ef217f0..3ad0ad8ca3 100644 --- a/test/dm/clk.c +++ b/test/dm/clk.c @@ -8,6 +8,7 @@ #include <dm.h> #include <asm/clk.h> #include <dm/test.h> +#include <dm/device-internal.h> #include <linux/err.h> #include <test/ut.h>
@@ -53,8 +54,19 @@ static int dm_test_clk(struct unit_test_state *uts) ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "clk-test", &dev_test)); ut_assertok(sandbox_clk_test_get(dev_test)); + ut_assertok(sandbox_clk_test_devm_get(dev_test)); ut_assertok(sandbox_clk_test_valid(dev_test));
+ ut_asserteq(0, sandbox_clk_test_get_rate(dev_test, + SANDBOX_CLK_TEST_ID_DEVM_NULL)); + ut_asserteq(0, sandbox_clk_test_set_rate(dev_test, + SANDBOX_CLK_TEST_ID_DEVM_NULL, + 0)); + ut_asserteq(0, sandbox_clk_test_enable(dev_test, + SANDBOX_CLK_TEST_ID_DEVM_NULL)); + ut_asserteq(0, sandbox_clk_test_disable(dev_test, + SANDBOX_CLK_TEST_ID_DEVM_NULL)); + ut_asserteq(1234, sandbox_clk_test_get_rate(dev_test, SANDBOX_CLK_TEST_ID_FIXED)); @@ -62,6 +74,10 @@ static int dm_test_clk(struct unit_test_state *uts) SANDBOX_CLK_TEST_ID_SPI)); ut_asserteq(0, sandbox_clk_test_get_rate(dev_test, SANDBOX_CLK_TEST_ID_I2C)); + ut_asserteq(0, sandbox_clk_test_get_rate(dev_test, + SANDBOX_CLK_TEST_ID_DEVM1)); + ut_asserteq(0, sandbox_clk_test_get_rate(dev_test, + SANDBOX_CLK_TEST_ID_DEVM2));
rate = sandbox_clk_test_set_rate(dev_test, SANDBOX_CLK_TEST_ID_FIXED, 12345); @@ -121,8 +137,25 @@ static int dm_test_clk(struct unit_test_state *uts) ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI)); ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
+ ut_asserteq(1, sandbox_clk_query_requested(dev_clk, + SANDBOX_CLK_ID_SPI)); + ut_asserteq(1, sandbox_clk_query_requested(dev_clk, + SANDBOX_CLK_ID_I2C)); + ut_asserteq(1, sandbox_clk_query_requested(dev_clk, + SANDBOX_CLK_ID_UART2)); ut_assertok(sandbox_clk_test_free(dev_test)); - + ut_asserteq(0, sandbox_clk_query_requested(dev_clk, + SANDBOX_CLK_ID_SPI)); + ut_asserteq(0, sandbox_clk_query_requested(dev_clk, + SANDBOX_CLK_ID_I2C)); + ut_asserteq(0, sandbox_clk_query_requested(dev_clk, + SANDBOX_CLK_ID_UART2)); + + ut_asserteq(1, sandbox_clk_query_requested(dev_clk, + SANDBOX_CLK_ID_UART1)); + ut_assertok(device_remove(dev_test, DM_REMOVE_NORMAL)); + ut_asserteq(0, sandbox_clk_query_requested(dev_clk, + SANDBOX_CLK_ID_UART1)); return 0; } DM_TEST(dm_test_clk, DM_TESTF_SCAN_FDT); @@ -159,6 +192,7 @@ static int dm_test_clk_bulk(struct unit_test_state *uts) ut_assertok(sandbox_clk_test_release_bulk(dev_test)); ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI)); ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C)); + ut_assertok(device_remove(dev_test, DM_REMOVE_NORMAL));
return 0; }