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linux/arch/arm/mach-orion5x/ts78xx-fpga.h

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ARM: orion5x: use safer FPGA ID 'default' for TS-78xx Originally the FPGA ID checking switch statement left disabled all the TS implemented FPGA devices if the ID was unknown to it. Michael Spang created a fix in f9b1184e that changed the default to enable the devices in the event TS silently release more revisions into the wild, this unfortunately breaks custom FPGA bitstreams. This patch amends the switch statement so that the TS devices are only enabled if on the revision number is unknown (whilst the magic matches). Changelog: v2: neater implementation and some cosmetic changes v1: initial release <20110305112937.GA22117@chipmunk> Signed-off-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
2011-03-05 12:49:36 +01:00
#define TS7800_FPGA_MAGIC 0x00b480
[ARM] orion5x: TS-78xx support for 'hotplug' of FPGA devices the FPGA on the TS-7800 provides access to a number of devices and so we have to be careful when reprogramming it. As we are effectively turning a bus off/on we have to inform the kernel that it should stop using anything provided by the FPGA (currently only the RTC however the NAND, LCD, etc is to come) before it's reprogrammed. Once reprogramed, we can tell the kernel to (re)enable things by checking the FPGA ID against a lookup table for what a particular FPGA bitstream can provide. Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
2009-02-06 23:16:55 +01:00
#define FPGAID(_magic, _rev) ((_magic << 8) + _rev)
/*
* get yer id's from http://ts78xx.digriz.org.uk/
* do *not* make up your own or 'borrow' any!
*/
enum fpga_ids {
/* Technologic Systems */
ARM: orion5x: use safer FPGA ID 'default' for TS-78xx Originally the FPGA ID checking switch statement left disabled all the TS implemented FPGA devices if the ID was unknown to it. Michael Spang created a fix in f9b1184e that changed the default to enable the devices in the event TS silently release more revisions into the wild, this unfortunately breaks custom FPGA bitstreams. This patch amends the switch statement so that the TS devices are only enabled if on the revision number is unknown (whilst the magic matches). Changelog: v2: neater implementation and some cosmetic changes v1: initial release <20110305112937.GA22117@chipmunk> Signed-off-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
2011-03-05 12:49:36 +01:00
TS7800_REV_1 = FPGAID(TS7800_FPGA_MAGIC, 0x01),
TS7800_REV_2 = FPGAID(TS7800_FPGA_MAGIC, 0x02),
TS7800_REV_3 = FPGAID(TS7800_FPGA_MAGIC, 0x03),
TS7800_REV_4 = FPGAID(TS7800_FPGA_MAGIC, 0x04),
TS7800_REV_5 = FPGAID(TS7800_FPGA_MAGIC, 0x05),
TS7800_REV_6 = FPGAID(TS7800_FPGA_MAGIC, 0x06),
TS7800_REV_7 = FPGAID(TS7800_FPGA_MAGIC, 0x07),
TS7800_REV_8 = FPGAID(TS7800_FPGA_MAGIC, 0x08),
TS7800_REV_9 = FPGAID(TS7800_FPGA_MAGIC, 0x09),
[ARM] orion5x: update of FPGA ID's for the TS-78xx Received official word finally from Technological Systems on which FPGA ID's they have released unto the world. Also an additional of a dummy entry matching the FPGA ID of the Verilog template on our wiki. Signed-off-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Nicolas Pitre <nico@marvell.com>
2009-03-21 12:09:25 +01:00
/* Unaffordable & Expensive */
UAE_DUMMY = FPGAID(0xffffff, 0x01),
[ARM] orion5x: TS-78xx support for 'hotplug' of FPGA devices the FPGA on the TS-7800 provides access to a number of devices and so we have to be careful when reprogramming it. As we are effectively turning a bus off/on we have to inform the kernel that it should stop using anything provided by the FPGA (currently only the RTC however the NAND, LCD, etc is to come) before it's reprogrammed. Once reprogramed, we can tell the kernel to (re)enable things by checking the FPGA ID against a lookup table for what a particular FPGA bitstream can provide. Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
2009-02-06 23:16:55 +01:00
};
struct fpga_device {
unsigned present:1;
unsigned init:1;
};
struct fpga_devices {
/* Technologic Systems */
ARM: orion5x: ts78xx whitespace cleanups Signed-off-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Andrew Lunn <andrew@lunn.ch>
2012-05-12 16:16:58 +02:00
struct fpga_device ts_rtc;
struct fpga_device ts_nand;
struct fpga_device ts_rng;
[ARM] orion5x: TS-78xx support for 'hotplug' of FPGA devices the FPGA on the TS-7800 provides access to a number of devices and so we have to be careful when reprogramming it. As we are effectively turning a bus off/on we have to inform the kernel that it should stop using anything provided by the FPGA (currently only the RTC however the NAND, LCD, etc is to come) before it's reprogrammed. Once reprogramed, we can tell the kernel to (re)enable things by checking the FPGA ID against a lookup table for what a particular FPGA bitstream can provide. Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
2009-02-06 23:16:55 +01:00
};
struct ts78xx_fpga_data {
unsigned int id;
int state;
struct fpga_devices supports;
};