On 12/23/2016 3:12 AM, Bjorn Andersson wrote:
On Thu 15 Dec 04:21 PST 2016, Avaneesh Kumar Dwivedi wrote:
Certain regulators and clocks need voting by rproc on behalf of hexagon
only during restart operation but certain clocks and voltage need to be
voted till hexagon is up, these regulators and clocks are identified as
proxy and active resource respectively, whose handle is being obtained
by supplying proxy and active clock name string.
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@xxxxxxxxxxxxxx>
---
drivers/remoteproc/qcom_q6v5_pil.c | 65 +++++++++++++++++++++++++++-----------
1 file changed, 47 insertions(+), 18 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c
index d875448..8c8b239 100644
--- a/drivers/remoteproc/qcom_q6v5_pil.c
+++ b/drivers/remoteproc/qcom_q6v5_pil.c
@@ -95,6 +95,8 @@
struct rproc_hexagon_res {
const char *hexagon_mba_image;
+ char **proxy_clk_string;
+ char **active_clk_string;
Use "name" instead of "string" in these variable names - i.e.
proxy_clk_names and active_clk_names.
OK.
};
struct q6v5 {
@@ -114,6 +116,11 @@ struct q6v5 {
struct qcom_smem_state *state;
unsigned stop_bit;
+ struct clk *active_clks[8];
+ struct clk *proxy_clks[4];
+ int active_clk_count;
+ int proxy_clk_count;
+
struct regulator_bulk_data supply[4];
struct clk *ahb_clk;
@@ -706,27 +713,33 @@ static int q6v5_init_mem(struct q6v5 *qproc, struct platform_device *pdev)
return 0;
}
-static int q6v5_init_clocks(struct q6v5 *qproc)
+static int q6v5_init_clocks(struct device *dev, struct clk **clks,
+ char **clk_str)
clk_names
OK.
{
- qproc->ahb_clk = devm_clk_get(qproc->dev, "iface");
- if (IS_ERR(qproc->ahb_clk)) {
- dev_err(qproc->dev, "failed to get iface clock\n");
- return PTR_ERR(qproc->ahb_clk);
- }
+ int count = 0;
+ int i;
- qproc->axi_clk = devm_clk_get(qproc->dev, "bus");
- if (IS_ERR(qproc->axi_clk)) {
- dev_err(qproc->dev, "failed to get bus clock\n");
- return PTR_ERR(qproc->axi_clk);
- }
+ if (!clk_str)
+ return 0;
+
+ while (clk_str[count])
+ count++;
+
+ for (i = 0; i < count; i++) {
You can squash these two loops into one, e.g. replace them with:
for (i = 0; clk_str[i]; i++) {}
and then return "i".
OK.
+ clks[i] = devm_clk_get(dev, clk_str[i]);
+ if (IS_ERR(clks[i])) {
+
+ int rc = PTR_ERR(clks[i]);
+
+ if (rc != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get %s clock\n",
+ clk_str[i]);
+ return rc;
+ }
- qproc->rom_clk = devm_clk_get(qproc->dev, "mem");
- if (IS_ERR(qproc->rom_clk)) {
- dev_err(qproc->dev, "failed to get mem clock\n");
- return PTR_ERR(qproc->rom_clk);
}
- return 0;
+ return count;
}
static int q6v5_init_reset(struct q6v5 *qproc)
@@ -843,9 +856,21 @@ static int q6v5_probe(struct platform_device *pdev)
if (ret)
goto free_rproc;
- ret = q6v5_init_clocks(qproc);
- if (ret)
+ ret = q6v5_init_clocks(&pdev->dev, qproc->proxy_clks,
+ desc->proxy_clk_string);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to setup proxy clocks.\n");
Please replace "setup" with "acquire" or "get".
OK.
+ goto free_rproc;
+ }
+ qproc->proxy_clk_count = ret;
+
+ ret = q6v5_init_clocks(&pdev->dev, qproc->active_clks,
+ desc->active_clk_string);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to setup active clocks.\n");
Dito.
OK.
goto free_rproc;
+ }
+ qproc->active_clk_count = ret;
ret = q6v5_regulator_init(qproc);
if (ret)
@@ -901,10 +926,14 @@ static int q6v5_remove(struct platform_device *pdev)
static const struct rproc_hexagon_res msm8916_mss = {
.hexagon_mba_image = "mba.mbn",
+ .proxy_clk_string = (char*[]){"xo", NULL},
+ .active_clk_string = (char*[]){"iface", "bus", "mem", NULL},
Line wrap these list of clock names, like:
.active_clk_string = (char*[]){
"iface",
"bus",
"mem",
NULL
},
Makes it consistent with the regulator
patch and it's easier for me to read.
OK.
};
static const struct rproc_hexagon_res msm8974_mss = {
.hexagon_mba_image = "mba.b00",
+ .proxy_clk_string = (char*[]){"xo", NULL},
+ .active_clk_string = (char*[]){"iface", "bus", "mem", NULL},
Dito
OK
};
If I apply this patch without patch 5 (Modify clock enable and disable
interface) we will successfully probe with the new clocks, but we will
not be able to boot because ahb_clk, axi_clk and rom_clk are NULL.
When you're sending patches you should make sure that the code works
(before and) after each patch that you introduce.
So please squash patch 5 into this patch.
OK, will squash patches into functional units and send them.
Other than that and these small style comments I think this patch looks
good!
Thanks.
Regards,
Bjorn
--
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