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Date: Thu, 9 Apr 2020 12:12:00 -0700
From: Jolly Shah <jolly.shah@...inx.com>
To: ard.biesheuvel@...aro.org, mingo@...nel.org,
gregkh@...uxfoundation.org, matt@...eblueprint.co.uk,
sudeep.holla@....com, hkallweit1@...il.com, keescook@...omium.org,
dmitry.torokhov@...il.com, michal.simek@...inx.com
Cc: rajanv@...inx.com, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, Rajan Vaja <rajan.vaja@...inx.com>,
Jolly Shah <jolly.shah@...inx.com>
Subject: [PATCH v4 11/25] firmware: xilinx: Use APIs instead of IOCTLs
From: Rajan Vaja <rajan.vaja@...inx.com>
Remove IOCTL API and use individual APIs for better readability.
Signed-off-by: Rajan Vaja <rajan.vaja@...inx.com>
Signed-off-by: Jolly Shah <jolly.shah@...inx.com>
---
drivers/clk/zynqmp/pll.c | 14 ++---
drivers/firmware/xilinx/zynqmp.c | 118 ++++++++++++++++++++++++++---------
drivers/mmc/host/sdhci-of-arasan.c | 38 +----------
include/linux/firmware/xlnx-zynqmp.h | 31 ++++++++-
4 files changed, 126 insertions(+), 75 deletions(-)
diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c
index 73fb5bb..92f449e 100644
--- a/drivers/clk/zynqmp/pll.c
+++ b/drivers/clk/zynqmp/pll.c
@@ -50,10 +50,8 @@ static inline enum pll_mode zynqmp_pll_get_mode(struct clk_hw *hw)
const char *clk_name = clk_hw_get_name(hw);
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
- const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
- ret = eemi_ops->ioctl(0, IOCTL_GET_PLL_FRAC_MODE, clk_id, 0,
- ret_payload);
+ ret = zynqmp_pm_get_pll_frac_mode(clk_id, ret_payload);
if (ret)
pr_warn_once("%s() PLL get frac mode failed for %s, ret = %d\n",
__func__, clk_name, ret);
@@ -73,14 +71,13 @@ static inline void zynqmp_pll_set_mode(struct clk_hw *hw, bool on)
const char *clk_name = clk_hw_get_name(hw);
int ret;
u32 mode;
- const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
if (on)
mode = PLL_MODE_FRAC;
else
mode = PLL_MODE_INT;
- ret = eemi_ops->ioctl(0, IOCTL_SET_PLL_FRAC_MODE, clk_id, mode, NULL);
+ ret = zynqmp_pm_set_pll_frac_mode(clk_id, mode);
if (ret)
pr_warn_once("%s() PLL set frac mode failed for %s, ret = %d\n",
__func__, clk_name, ret);
@@ -139,7 +136,6 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw,
unsigned long rate, frac;
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
- const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
ret = zynqmp_pm_clock_getdivider(clk_id, &fbdiv);
if (ret)
@@ -148,8 +144,7 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw,
rate = parent_rate * fbdiv;
if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) {
- eemi_ops->ioctl(0, IOCTL_GET_PLL_FRAC_DATA, clk_id, 0,
- ret_payload);
+ zynqmp_pm_get_pll_frac_data(clk_id, ret_payload);
data = ret_payload[1];
frac = (parent_rate * data) / FRAC_DIV;
rate = rate + frac;
@@ -177,7 +172,6 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate,
u32 fbdiv;
long rate_div, frac, m, f;
int ret;
- const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) {
rate_div = (rate * FRAC_DIV) / parent_rate;
@@ -194,7 +188,7 @@ static int zynqmp_pll_set_rate(struct clk_hw *hw, unsigned long rate,
else if (ret)
pr_warn_once("%s() set divider failed for %s, ret = %d\n",
__func__, clk_name, ret);
- eemi_ops->ioctl(0, IOCTL_SET_PLL_FRAC_DATA, clk_id, f, NULL);
+ zynqmp_pm_set_pll_frac_data(clk_id, f);
return rate + frac;
}
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index b0aa967..94fd755 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -516,47 +516,108 @@ int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
EXPORT_SYMBOL_GPL(zynqmp_pm_clock_getparent);
/**
- * zynqmp_is_valid_ioctl() - Check whether IOCTL ID is valid or not
- * @ioctl_id: IOCTL ID
+ * zynqmp_pm_set_pll_frac_mode() - PM API for set PLL mode
*
- * Return: 1 if IOCTL is valid else 0
+ * @clk_id: PLL clock ID
+ * @mode: PLL mode (PLL_MODE_FRAC/PLL_MODE_INT)
+ *
+ * This function sets PLL mode
+ *
+ * Return: Returns status, either success or error+reason
*/
-static inline int zynqmp_is_valid_ioctl(u32 ioctl_id)
+int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode)
{
- switch (ioctl_id) {
- case IOCTL_SD_DLL_RESET:
- case IOCTL_SET_SD_TAPDELAY:
- case IOCTL_SET_PLL_FRAC_MODE:
- case IOCTL_GET_PLL_FRAC_MODE:
- case IOCTL_SET_PLL_FRAC_DATA:
- case IOCTL_GET_PLL_FRAC_DATA:
- return 1;
- default:
- return 0;
- }
+ return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_SET_PLL_FRAC_MODE,
+ clk_id, mode, NULL);
}
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_mode);
/**
- * zynqmp_pm_ioctl() - PM IOCTL API for device control and configs
- * @node_id: Node ID of the device
- * @ioctl_id: ID of the requested IOCTL
- * @arg1: Argument 1 to requested IOCTL call
- * @arg2: Argument 2 to requested IOCTL call
- * @out: Returned output value
+ * zynqmp_pm_get_pll_frac_mode() - PM API for get PLL mode
+ *
+ * @clk_id: PLL clock ID
+ * @mode: PLL mode
*
- * This function calls IOCTL to firmware for device control and configuration.
+ * This function return current PLL mode
*
* Return: Returns status, either success or error+reason
*/
-static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
- u32 *out)
+int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode)
{
- if (!zynqmp_is_valid_ioctl(ioctl_id))
- return -EINVAL;
+ return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_GET_PLL_FRAC_MODE,
+ clk_id, 0, mode);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_mode);
+
+/**
+ * zynqmp_pm_set_pll_frac_data() - PM API for setting pll fraction data
+ *
+ * @clk_id: PLL clock ID
+ * @data: fraction data
+ *
+ * This function sets fraction data.
+ * It is valid for fraction mode only.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_SET_PLL_FRAC_DATA,
+ clk_id, data, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_pll_frac_data);
+
+/**
+ * zynqmp_pm_get_pll_frac_data() - PM API for getting pll fraction data
+ *
+ * @clk_id: PLL clock ID
+ * @data: fraction data
+ *
+ * This function returns fraction data value.
+ *
+ * Return: Returns status, either success or error+reason
+ */
+int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, 0, IOCTL_GET_PLL_FRAC_DATA,
+ clk_id, 0, data);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_get_pll_frac_data);
- return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, ioctl_id,
- arg1, arg2, out);
+/**
+ * zynqmp_pm_set_sd_tapdelay() - Set tap delay for the SD device
+ *
+ * @node_id Node ID of the device
+ * @type Type of tap delay to set (input/output)
+ * @value Value to set fot the tap delay
+ *
+ * This function sets input/output tap delay for the SD device.
+ *
+ * @return Returns status, either success or error+reason
+ */
+int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, IOCTL_SET_SD_TAPDELAY,
+ type, value, NULL);
+}
+EXPORT_SYMBOL_GPL(zynqmp_pm_set_sd_tapdelay);
+
+/**
+ * zynqmp_pm_sd_dll_reset() - Reset DLL logic
+ *
+ * @node_id Node ID of the device
+ * @type Reset type
+ *
+ * This function resets DLL logic for the SD device.
+ *
+ * @return Returns status, either success or error+reason
+ */
+int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
+{
+ return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, IOCTL_SET_SD_TAPDELAY,
+ type, 0, NULL);
}
+EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset);
/**
* zynqmp_pm_reset_assert - Request setting of reset (1 - assert, 0 - release)
@@ -746,7 +807,6 @@ static int zynqmp_pm_aes_engine(const u64 address, u32 *out)
}
static const struct zynqmp_eemi_ops eemi_ops = {
- .ioctl = zynqmp_pm_ioctl,
.reset_assert = zynqmp_pm_reset_assert,
.reset_get_status = zynqmp_pm_reset_get_status,
.init_finalize = zynqmp_pm_init_finalize,
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index d4905c1..d01f762 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -98,10 +98,6 @@ struct sdhci_arasan_clk_data {
void *clk_of_data;
};
-struct sdhci_arasan_zynqmp_clk_data {
- const struct zynqmp_eemi_ops *eemi_ops;
-};
-
/**
* struct sdhci_arasan_data
* @host: Pointer to the main SDHCI host structure.
@@ -630,9 +626,6 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct clk_hw *hw, int degrees)
struct sdhci_arasan_data *sdhci_arasan =
container_of(clk_data, struct sdhci_arasan_data, clk_data);
struct sdhci_host *host = sdhci_arasan->host;
- struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data =
- clk_data->clk_of_data;
- const struct zynqmp_eemi_ops *eemi_ops = zynqmp_clk_data->eemi_ops;
const char *clk_name = clk_hw_get_name(hw);
u32 node_id = !strcmp(clk_name, "clk_out_sd0") ? NODE_SD_0 : NODE_SD_1;
u8 tap_delay, tap_max = 0;
@@ -672,8 +665,7 @@ static int sdhci_zynqmp_sdcardclk_set_phase(struct clk_hw *hw, int degrees)
tap_delay = (degrees * tap_max) / 360;
/* Set the Clock Phase */
- ret = eemi_ops->ioctl(node_id, IOCTL_SET_SD_TAPDELAY,
- PM_TAPDELAY_OUTPUT, tap_delay, NULL);
+ ret = zynqmp_pm_set_sd_tapdelay(node_id, PM_TAPDELAY_OUTPUT, tap_delay);
if (ret)
pr_err("Error setting Output Tap Delay\n");
@@ -702,9 +694,6 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct clk_hw *hw, int degrees)
struct sdhci_arasan_data *sdhci_arasan =
container_of(clk_data, struct sdhci_arasan_data, clk_data);
struct sdhci_host *host = sdhci_arasan->host;
- struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data =
- clk_data->clk_of_data;
- const struct zynqmp_eemi_ops *eemi_ops = zynqmp_clk_data->eemi_ops;
const char *clk_name = clk_hw_get_name(hw);
u32 node_id = !strcmp(clk_name, "clk_in_sd0") ? NODE_SD_0 : NODE_SD_1;
u8 tap_delay, tap_max = 0;
@@ -744,8 +733,7 @@ static int sdhci_zynqmp_sampleclk_set_phase(struct clk_hw *hw, int degrees)
tap_delay = (degrees * tap_max) / 360;
/* Set the Clock Phase */
- ret = eemi_ops->ioctl(node_id, IOCTL_SET_SD_TAPDELAY,
- PM_TAPDELAY_INPUT, tap_delay, NULL);
+ ret = zynqmp_pm_set_sd_tapdelay(node_id, PM_TAPDELAY_INPUT, tap_delay);
if (ret)
pr_err("Error setting Input Tap Delay\n");
@@ -759,11 +747,6 @@ static const struct clk_ops zynqmp_sampleclk_ops = {
static void arasan_zynqmp_dll_reset(struct sdhci_host *host, u32 deviceid)
{
- struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- struct sdhci_arasan_data *sdhci_arasan = sdhci_pltfm_priv(pltfm_host);
- struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data =
- sdhci_arasan->clk_data.clk_of_data;
- const struct zynqmp_eemi_ops *eemi_ops = zynqmp_clk_data->eemi_ops;
u16 clk;
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
@@ -771,8 +754,7 @@ static void arasan_zynqmp_dll_reset(struct sdhci_host *host, u32 deviceid)
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
/* Issue DLL Reset */
- eemi_ops->ioctl(deviceid, IOCTL_SD_DLL_RESET,
- PM_DLL_RESET_PULSE, 0, NULL);
+ zynqmp_pm_sd_dll_reset(deviceid, PM_DLL_RESET_PULSE);
clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
@@ -1277,20 +1259,6 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
goto clk_disable_all;
if (of_device_is_compatible(np, "xlnx,zynqmp-8.9a")) {
- struct sdhci_arasan_zynqmp_clk_data *zynqmp_clk_data;
- const struct zynqmp_eemi_ops *eemi_ops;
-
- zynqmp_clk_data = devm_kzalloc(&pdev->dev,
- sizeof(*zynqmp_clk_data),
- GFP_KERNEL);
- eemi_ops = zynqmp_pm_get_eemi_ops();
- if (IS_ERR(eemi_ops)) {
- ret = PTR_ERR(eemi_ops);
- goto unreg_clk;
- }
-
- zynqmp_clk_data->eemi_ops = eemi_ops;
- sdhci_arasan->clk_data.clk_of_data = zynqmp_clk_data;
host->mmc_host_ops.execute_tuning =
arasan_zynqmp_execute_tuning;
}
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 7abb683..5aff896 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -296,7 +296,6 @@ struct zynqmp_pm_query_data {
struct zynqmp_eemi_ops {
int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
int (*fpga_get_status)(u32 *value);
- int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
int (*reset_assert)(const enum zynqmp_pm_reset reset,
const enum zynqmp_pm_reset_action assert_flag);
int (*reset_get_status)(const enum zynqmp_pm_reset reset, u32 *status);
@@ -331,6 +330,12 @@ int zynqmp_pm_clock_setrate(u32 clock_id, u64 rate);
int zynqmp_pm_clock_getrate(u32 clock_id, u64 *rate);
int zynqmp_pm_clock_setparent(u32 clock_id, u32 parent_id);
int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id);
+int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode);
+int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode);
+int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data);
+int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data);
+int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value);
+int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type);
#else
static inline struct zynqmp_eemi_ops *zynqmp_pm_get_eemi_ops(void)
{
@@ -385,6 +390,30 @@ static inline int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
{
return -ENODEV;
}
+static inline int zynqmp_pm_set_pll_frac_mode(u32 clk_id, u32 mode)
+{
+ return -ENODEV;
+}
+static inline int zynqmp_pm_get_pll_frac_mode(u32 clk_id, u32 *mode)
+{
+ return -ENODEV;
+}
+static inline int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data)
+{
+ return -ENODEV;
+}
+static inline int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data)
+{
+ return -ENODEV;
+}
+static inline int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value)
+{
+ return -ENODEV;
+}
+static inline int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
+{
+ return -ENODEV;
+}
#endif
#endif /* __FIRMWARE_ZYNQMP_H__ */
--
2.7.4
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