Tenant Rights under CA Med Marijuana laws

I have a card for medical marijuana.I do not grow, I only smoke & only in my apt.Other people in the complex smoke,but whenever there is a complaint of pot smoke, I am the first one blamed. In the most recent complaint my landlord told me it doesn't matter if I have a card or not, I am in violation of my lease if I continue. I am considering renegotiating my lease to make an exception/exemption to apartment smoking & drug policies, provided I don't allow the smoke into public areas. What kind of protections and/or rights do the CA laws provide for a situation like this that I can cite in my case for an amendment?I don't want to disrupt neighbors,but it isn't right that I can't smoke in my own home when it's illegal to smoke anywhere else, & I shouldn't have to move just to use my meds.