| Message ID | 2cd104d61289cafcf17d8f1b0dbf5de5778a0a0c.1682504219.git.geert+renesas@glider.be (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] media: renesas: fdp1: Identify R-Car Gen2 versions | expand |
Hi Geert, Quoting Geert Uytterhoeven (2023-04-26 11:18:24) > On R-Car M2-W: > > rcar_fdp1 fe940000.fdp1: FDP1 Unidentifiable (0x02010101) > rcar_fdp1 fe944000.fdp1: FDP1 Unidentifiable (0x02010101) > > Although the IP Internal Data Register on R-Car Gen2 is documented to > contain all zeros, the actual register contents seem to match the FDP1 > version ID of R-Car H3 ES1.*, which has just been removed. > Fortunately this version is not used for any other purposes yet. > > Fix this by re-adding the ID, now using an R-Car Gen2-specific name. > > Fixes: af4273b43f2bd9ee ("media: renesas: fdp1: remove R-Car H3 ES1.* handling") > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> > Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> > --- > Version register contents verified on R-Car H2 ES1.0, R-Car M2-W ES1.0 & > ES3.0, and R-Car E2 ES1.0. I couldn't get hold of an R-Car M2-N. > > v2: > - Add Reviewed-by, > - Add comment. Looks good!. A pain that the hardware doesn't match the documentation but ... ho hum! Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> > --- > drivers/media/platform/renesas/rcar_fdp1.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/media/platform/renesas/rcar_fdp1.c b/drivers/media/platform/renesas/rcar_fdp1.c > index 99af68fddc9249f5..d3bb3e71d61fd9dc 100644 > --- a/drivers/media/platform/renesas/rcar_fdp1.c > +++ b/drivers/media/platform/renesas/rcar_fdp1.c > @@ -254,6 +254,8 @@ MODULE_PARM_DESC(debug, "activate debug info"); > > /* Internal Data (HW Version) */ > #define FD1_IP_INTDATA 0x0800 > +/* R-Car Gen2 HW manual says zero, but actual value matches R-Car H3 ES1.x */ > +#define FD1_IP_GEN2 0x02010101 > #define FD1_IP_M3W 0x02010202 > #define FD1_IP_H3 0x02010203 > #define FD1_IP_M3N 0x02010204 > @@ -2360,6 +2362,9 @@ static int fdp1_probe(struct platform_device *pdev) > > hw_version = fdp1_read(fdp1, FD1_IP_INTDATA); > switch (hw_version) { > + case FD1_IP_GEN2: > + dprintk(fdp1, "FDP1 Version R-Car Gen2\n"); > + break; > case FD1_IP_M3W: > dprintk(fdp1, "FDP1 Version R-Car M3-W\n"); > break; > -- > 2.34.1 >
diff --git a/drivers/media/platform/renesas/rcar_fdp1.c b/drivers/media/platform/renesas/rcar_fdp1.c index 99af68fddc9249f5..d3bb3e71d61fd9dc 100644 --- a/drivers/media/platform/renesas/rcar_fdp1.c +++ b/drivers/media/platform/renesas/rcar_fdp1.c @@ -254,6 +254,8 @@ MODULE_PARM_DESC(debug, "activate debug info"); /* Internal Data (HW Version) */ #define FD1_IP_INTDATA 0x0800 +/* R-Car Gen2 HW manual says zero, but actual value matches R-Car H3 ES1.x */ +#define FD1_IP_GEN2 0x02010101 #define FD1_IP_M3W 0x02010202 #define FD1_IP_H3 0x02010203 #define FD1_IP_M3N 0x02010204 @@ -2360,6 +2362,9 @@ static int fdp1_probe(struct platform_device *pdev) hw_version = fdp1_read(fdp1, FD1_IP_INTDATA); switch (hw_version) { + case FD1_IP_GEN2: + dprintk(fdp1, "FDP1 Version R-Car Gen2\n"); + break; case FD1_IP_M3W: dprintk(fdp1, "FDP1 Version R-Car M3-W\n"); break;
On R-Car M2-W: rcar_fdp1 fe940000.fdp1: FDP1 Unidentifiable (0x02010101) rcar_fdp1 fe944000.fdp1: FDP1 Unidentifiable (0x02010101) Although the IP Internal Data Register on R-Car Gen2 is documented to contain all zeros, the actual register contents seem to match the FDP1 version ID of R-Car H3 ES1.*, which has just been removed. Fortunately this version is not used for any other purposes yet. Fix this by re-adding the ID, now using an R-Car Gen2-specific name. Fixes: af4273b43f2bd9ee ("media: renesas: fdp1: remove R-Car H3 ES1.* handling") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> --- Version register contents verified on R-Car H2 ES1.0, R-Car M2-W ES1.0 & ES3.0, and R-Car E2 ES1.0. I couldn't get hold of an R-Car M2-N. v2: - Add Reviewed-by, - Add comment. --- drivers/media/platform/renesas/rcar_fdp1.c | 5 +++++ 1 file changed, 5 insertions(+)