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[safe/jmp/linux-2.6] / Documentation / pcmcia / driver-changes.txt

diff --git a/Documentation/pcmcia/driver-changes.txt b/Documentation/pcmcia/driver-changes.txt
index 96f155e..61bc4e9 100644 (file)
--- a/Documentation/pcmcia/driver-changes.txt
+++ b/Documentation/pcmcia/driver-changes.txt
@@ -1,4 +1,35 @@
 This file details changes in 2.6 which affect PCMCIA card driver authors:
+* No dev_node_t (as of 2.6.35)
+   There is no more need to fill out a "dev_node_t" structure.
+
+* New IRQ request rules (as of 2.6.35)
+   Instead of the old pcmcia_request_irq() interface, drivers may now
+   choose between:
+   - calling request_irq/free_irq directly. Use the IRQ from *p_dev->irq.
+   - use pcmcia_request_irq(p_dev, handler_t); the PCMCIA core will
+     clean up automatically on calls to pcmcia_disable_device() or
+     device ejection.
+   - drivers still not capable of IRQF_SHARED (or not telling us so) may
+     use the deprecated pcmcia_request_exclusive_irq() for the time
+     being; they might receive a shared IRQ nonetheless.
+
+* no cs_error / CS_CHECK / CONFIG_PCMCIA_DEBUG (as of 2.6.33)
+   Instead of the cs_error() callback or the CS_CHECK() macro, please use
+   Linux-style checking of return values, and -- if necessary -- debug
+   messages using "dev_dbg()" or "pr_debug()".
+
+* New CIS tuple access (as of 2.6.33)
+   Instead of pcmcia_get_{first,next}_tuple(), pcmcia_get_tuple_data() and
+   pcmcia_parse_tuple(), a driver shall use "pcmcia_get_tuple()" if it is
+   only interested in one (raw) tuple, or "pcmcia_loop_tuple()" if it is
+   interested in all tuples of one type. To decode the MAC from CISTPL_FUNCE,
+   a new helper "pcmcia_get_mac_from_cis()" was added.
+
+* New configuration loop helper (as of 2.6.28)
+   By calling pcmcia_loop_config(), a driver can iterate over all available
+   configuration options. During a driver's probe() phase, one doesn't need
+   to use pcmcia_get_{first,next}_tuple, pcmcia_get_tuple_data and
+   pcmcia_parse_tuple directly in most if not all cases.
 
 * New release helper (as of 2.6.17)
    Instead of calling pcmcia_release_{configuration,io,irq,win}, all that's